how to add solaris route with this netmask [7:6098]
Hi.. May I know how to add in route entry in solaris with this network "100.100.164.0 255.255.252.0" I use this command "route add -net 100.100.164.0 100.100.164.1" it will add the entry 100.100.164.0/24 not /22 but if I use route add -net 100.100.164.0 255.255.252.0 100.100.164.1 it prompt me 255.255.252.0 is unreacheable? How I going to add it?? _ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6098&t=6098 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Serial1/3.1 is deleted, line protocol is down [7:6090]
Hi let me explain what i mean to ask i try to configured a serial interface(sub interface) on ser1/3 i could n't achieve what i was trying to do (i was trying to configure a backup interface) so i removed the sub interface using command no int ser1/3.1 but now even after removing the interface i see the following thing when i use show int .. i think it should not be there ...right or i am wrong so why it still show this Serial1/3.1 is deleted, line protocol is down Hardware is M4T MTU 1500 bytes, BW 1544 Kbit, DLY 2 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation X25 Serial2/0 is down, line protocol is down Hardware is M4T Description: BGW 1.1 MTU 1500 bytes, BW 1544 Kbit, DLY 2 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation X25, loopback not set X.25 DCE, address , state R/Inactive, modulo 8, timer 0 Regards Arun Sharma ""ElephantChild"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > On Mon, 28 May 2001, Arun wrote: > > > Hi > > i am getting this message when i run > > show int command on 3600 series router with x25 on it > > i tried configuring it but i removed whats wrong can u pls help > > If you didn't do so already, read what the cisco docs say on "show > interface", then tell us what specific part you still don't understand, > and what you think it could mean. Also tell us what other steps you took > to answer your question, and how and why you think they failed. > > Or, if your question isn't "what does a deleted/down status mean?", > you'll have to tell us what it is. > > > Regards > > Arun Sharma > > > > Serial1/3.1 is deleted, line protocol is down > > Hardware is M4T > > MTU 1500 bytes, BW 1544 Kbit, DLY 2 usec, > > reliability 255/255, txload 1/255, rxload 1/255 > > Encapsulation X25 > > Serial2/0 is down, line protocol is down > > Hardware is M4T > > Description: BGW 1.1 > > MTU 1500 bytes, BW 1544 Kbit, DLY 2 usec, > > reliability 255/255, txload 1/255, rxload 1/255 > > Encapsulation X25, loopback not set > > X.25 DCE, address , state R/Inactive, modulo 8, timer 0 > > Defaults: idle VC timeout 0 > > cisco encapsulation > > input/output window sizes 2/2, packet sizes 128/128 > > Timers: T10 60 > > -- > "Someone approached me and asked me to teach a javascript course. I was > about to decline, saying that my complete ignorance of the subject made > me unsuitable, then I thought again, that maybe it doesn't, as driving > people away from it is a desirable outcome." --Me > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6097&t=6090 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: E1 and T1 [7:6086]
NO, it cannot. the two types of circuits use completly different methods of framing and linecoding, for starters. you need an intermediary TDM device to map the timeslots, and do the two seperate formats for you. -Peter Slow, CCNP - Original Message - From: "Fanglo MA" To: Sent: Monday, May 28, 2001 12:10 AM Subject: E1 and T1 [7:6086] > Does anyone know would E1 WIC card can cross back-to-back with T1 WIC card? > > TIA > Fanglo > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6099&t=6086 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Serial1/3.1 is deleted, line protocol is down [7:6090]
If u delete any subinterface u need to reboot the router to remove it. It will stay in that case until u reboot the router. Regards, Anan -Original Message- From: Arun [mailto:[EMAIL PROTECTED]] Sent: Mon, May 28, 2001 10:41 AM To: [EMAIL PROTECTED] Subject: Re: Serial1/3.1 is deleted, line protocol is down [7:6090] Hi let me explain what i mean to ask i try to configured a serial interface(sub interface) on ser1/3 i could n't achieve what i was trying to do (i was trying to configure a backup interface) so i removed the sub interface using command no int ser1/3.1 but now even after removing the interface i see the following thing when i use show int .. i think it should not be there ...right or i am wrong so why it still show this Serial1/3.1 is deleted, line protocol is down Hardware is M4T MTU 1500 bytes, BW 1544 Kbit, DLY 2 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation X25 Serial2/0 is down, line protocol is down Hardware is M4T Description: BGW 1.1 MTU 1500 bytes, BW 1544 Kbit, DLY 2 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation X25, loopback not set X.25 DCE, address , state R/Inactive, modulo 8, timer 0 Regards Arun Sharma ""ElephantChild"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > On Mon, 28 May 2001, Arun wrote: > > > Hi > > i am getting this message when i run > > show int command on 3600 series router with x25 on it > > i tried configuring it but i removed whats wrong can u pls help > > If you didn't do so already, read what the cisco docs say on "show > interface", then tell us what specific part you still don't understand, > and what you think it could mean. Also tell us what other steps you took > to answer your question, and how and why you think they failed. > > Or, if your question isn't "what does a deleted/down status mean?", > you'll have to tell us what it is. > > > Regards > > Arun Sharma > > > > Serial1/3.1 is deleted, line protocol is down > > Hardware is M4T > > MTU 1500 bytes, BW 1544 Kbit, DLY 2 usec, > > reliability 255/255, txload 1/255, rxload 1/255 > > Encapsulation X25 > > Serial2/0 is down, line protocol is down > > Hardware is M4T > > Description: BGW 1.1 > > MTU 1500 bytes, BW 1544 Kbit, DLY 2 usec, > > reliability 255/255, txload 1/255, rxload 1/255 > > Encapsulation X25, loopback not set > > X.25 DCE, address , state R/Inactive, modulo 8, timer 0 > > Defaults: idle VC timeout 0 > > cisco encapsulation > > input/output window sizes 2/2, packet sizes 128/128 > > Timers: T10 60 > > -- > "Someone approached me and asked me to teach a javascript course. I was > about to decline, saying that my complete ignorance of the subject made > me unsuitable, then I thought again, that maybe it doesn't, as driving > people away from it is a desirable outcome." --Me > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6100&t=6090 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Serial1/3.1 is deleted, line protocol is down [7:6090]
Hi Thanks for the information ..i will try this when i find time cause the router is on live network i cann't do tthat they will kill me ..can u pls tell about I have 3600 router coonfigured as x25 i have 2 slots each having 4 serial interfaces in it ... i have to configure this with 2 serial ports on slot one for x25 encapsulation and on slot 2 i have to configure 2 serial ports which need to act as redundant in case there is problem with slot 1 ports .. i have ver 11.3 runing on it i added the entries like ... x25 route 010104 int ser 1/2 x25 route 010104 int ser 1/3 x25 route 010103 int ser 2/2 x25 route 010103 int ser 2/3 First thing will this do the job the machines on the other end has 2 serial port for each machine one is active and one is standy .machine switch over to standy if it sees error i link so i need to route the packets to this standby machine with interface ser 2/2 and ser 2/3 . Now i read somewhere like x25 retry command and backup interface command ... how can i use them can anybody send me the configuration and also will this work on ver 11.3 i tried it on ver11.3 but i think it doesn';t support it Pls suggest something . Regards Arun Sharma ""Bishara, Anan"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > If u delete any subinterface u need to reboot the router to remove it. It > will stay in that case until u reboot the router. > Regards, > Anan > > -Original Message- > From: Arun [mailto:[EMAIL PROTECTED]] > Sent: Mon, May 28, 2001 10:41 AM > To: [EMAIL PROTECTED] > Subject: Re: Serial1/3.1 is deleted, line protocol is down [7:6090] > > > Hi > let me explain what i mean to ask > i try to configured a serial interface(sub interface) on ser1/3 i could n't > achieve what i was trying to do (i was trying to configure a backup > interface) so i removed the sub interface using > command > no int ser1/3.1 > but now even after removing the interface i see the following thing when i > use show int .. > i think it should not be there ...right or i am wrong > so why it still show this > Serial1/3.1 is deleted, line protocol is down > Hardware is M4T > MTU 1500 bytes, BW 1544 Kbit, DLY 2 usec, > reliability 255/255, txload 1/255, rxload 1/255 > Encapsulation X25 > Serial2/0 is down, line protocol is down > Hardware is M4T > Description: BGW 1.1 > MTU 1500 bytes, BW 1544 Kbit, DLY 2 usec, > reliability 255/255, txload 1/255, rxload 1/255 > Encapsulation X25, loopback not set > X.25 DCE, address , state R/Inactive, modulo 8, timer 0 > > > Regards > Arun Sharma > > > ""ElephantChild"" wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > On Mon, 28 May 2001, Arun wrote: > > > > > Hi > > > i am getting this message when i run > > > show int command on 3600 series router with x25 on it > > > i tried configuring it but i removed whats wrong can u pls help > > > > If you didn't do so already, read what the cisco docs say on "show > > interface", then tell us what specific part you still don't understand, > > and what you think it could mean. Also tell us what other steps you took > > to answer your question, and how and why you think they failed. > > > > Or, if your question isn't "what does a deleted/down status mean?", > > you'll have to tell us what it is. > > > > > Regards > > > Arun Sharma > > > > > > Serial1/3.1 is deleted, line protocol is down > > > Hardware is M4T > > > MTU 1500 bytes, BW 1544 Kbit, DLY 2 usec, > > > reliability 255/255, txload 1/255, rxload 1/255 > > > Encapsulation X25 > > > Serial2/0 is down, line protocol is down > > > Hardware is M4T > > > Description: BGW 1.1 > > > MTU 1500 bytes, BW 1544 Kbit, DLY 2 usec, > > > reliability 255/255, txload 1/255, rxload 1/255 > > > Encapsulation X25, loopback not set > > > X.25 DCE, address , state R/Inactive, modulo 8, timer 0 > > > Defaults: idle VC timeout 0 > > > cisco encapsulation > > > input/output window sizes 2/2, packet sizes 128/128 > > > Timers: T10 60 > > > > -- > > "Someone approached me and asked me to teach a javascript course. I was > > about to decline, saying that my complete ignorance of the subject made > > me unsuitable, then I thought again, that maybe it doesn't, as driving > > people away from it is a desirable outcome." --Me > > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6101&t=6090 -- FAQ
Remove me.... [7:6102]
Could you pls. remove my e-mail address from the list?.. Thanx. -- babatope ojo [EMAIL PROTECTED] - email (202) 777-2641 ext. 8015 - voicemail/fax "Arun" wrote: > Hi > Thanks for the information ..i will try this when i find time cause > the > router is on live network i cann't do tthat they will kill me ..can > u pls tell about > I have 3600 router coonfigured as x25 i have 2 slots each having > 4 > serial interfaces in it ... > i have to configure this with 2 serial ports on slot one for x25 > encapsulation and on slot 2 i have to configure 2 serial ports which > need to > act as redundant in case there is problem with slot 1 ports .. > i have ver 11.3 runing on it > i added the entries like ... > x25 route 010104 int ser 1/2 > x25 route 010104 int ser 1/3 > x25 route 010103 int ser 2/2 > x25 route 010103 int ser 2/3 > > First thing will this do the job the machines on the other end has > 2 serial > port for each machine one is active and one is standy .machine > switch > over to standy if it sees error i link so i need to route the packets > to > this standby machine with interface ser 2/2 and ser 2/3 . > > Now i read somewhere like x25 retry command and backup interface command > ... > how can i use them can anybody send me the configuration and also will > this > work on ver 11.3 > i tried it on ver11.3 but i think it doesn';t support it > > Pls suggest something . > > Regards > Arun Sharma > > > > > > ""Bishara, Anan"" wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > If u delete any subinterface u need to reboot the router to remove > it. It > > will stay in that case until u reboot the router. > > Regards, > > Anan > > > > -Original Message- > > From: Arun [mailto:[EMAIL PROTECTED]] > > Sent: Mon, May 28, 2001 10:41 AM > > To: [EMAIL PROTECTED] > > Subject: Re: Serial1/3.1 is deleted, line protocol is down [7:6090] > > > > > > Hi > > let me explain what i mean to ask > > i try to configured a serial interface(sub interface) on ser1/3 i > could > n't > > achieve what i was trying to do (i was trying to configure a backup > > interface) so i removed the sub interface using > > command > > no int ser1/3.1 > > but now even after removing the interface i see the following thing > when i > > use show int .. > > i think it should not be there ...right or i am wrong > > so why it still show this > > Serial1/3.1 is deleted, line protocol is down > > Hardware is M4T > > MTU 1500 bytes, BW 1544 Kbit, DLY 2 usec, > > reliability 255/255, txload 1/255, rxload 1/255 > > Encapsulation X25 > > Serial2/0 is down, line protocol is down > > Hardware is M4T > > Description: BGW 1.1 > > MTU 1500 bytes, BW 1544 Kbit, DLY 2 usec, > > reliability 255/255, txload 1/255, rxload 1/255 > > Encapsulation X25, loopback not set > > X.25 DCE, address , state R/Inactive, modulo 8, timer 0 > > > > > > Regards > > Arun Sharma > > > > > > ""ElephantChild"" wrote in message > > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > > On Mon, 28 May 2001, Arun wrote: > > > > > > > Hi > > > > i am getting this message when i run > > > > show int command on 3600 series router with x25 on it > > > > i tried configuring it but i removed whats wrong can u pls help > > > > > > If you didn't do so already, read what the cisco docs say on "show > > > interface", then tell us what specific part you still don't understand, > > > and what you think it could mean. Also tell us what other steps > you took > > > to answer your question, and how and why you think they failed. > > > > > > Or, if your question isn't "what does a deleted/down status mean?", > > > you'll have to tell us what it is. > > > > > > > Regards > > > > Arun Sharma > > > > > > > > Serial1/3.1 is deleted, line protocol is down > > > > Hardware is M4T > > > > MTU 1500 bytes, BW 1544 Kbit, DLY 2 usec, > > > > reliability 255/255, txload 1/255, rxload 1/255 > > > > Encapsulation X25 > > > > Serial2/0 is down, line protocol is down > > > > Hardware is M4T > > > > Description: BGW 1.1 > > > > MTU 1500 bytes, BW 1544 Kbit, DLY 2 usec, > > > > reliability 255/255, txload 1/255, rxload 1/255 > > > > Encapsulation X25, loopback not set > > > > X.25 DCE, address , state R/Inactive, modulo 8, timer 0 > > > > Defaults: idle VC timeout 0 > > > > cisco encapsulation > > > > input/output window sizes 2/2, packet sizes 128/128 > > > > Timers: T10 60 > > > > > > -- > > > "Someone approached me and asked me to teach a javascript course. > I was > > > about to decline, saying that my complete ignorance of the subject > made > > > me unsuitable, then I thought again, that maybe it doesn't, as > driving > > > people away from it is a desirable outcome." --Me > > > FAQ, list archives, and subscription info: > > http://www.groupstudy.com/list/cisco.html > > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: CCIE pre-lab [7:5894]
Check out http://www.IPexpert.NET ""CCSI"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > pls give me some CCIE pre-lab site, I need more ccie lab information > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6103&t=5894 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: What do "interVLAN routing "and" Layer 3 switching " mean [7:6104]
Hi Frank, I think the best description for Layer 3 Switching is "Route once - Switch many". The first time a packet in a particular "flow" passes through, a routing function will be used (on a different card, or even in a different device). But to speed up the processing of any further packets in that flow, a cache is created in the switch to remember this flow. The next time a packet comes through which matches this flow it will be switched without using the router functionality, therefore speeding things up. The definition of a flow can differ depending on configuration. For instance, normally a flow may be any packet to a particular destination, but if , for example, an extended access list is configured, the criteria for the flow may tighten up i.e. to be considered part of a flow, the source and destination are compared. Inter-VLAN routing means a packet gets routed every time. Regards, Gaz ""frank"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > What does the following mean ?it's cut from a description of WS-X4232-L3 on > cisco website. > > > The Catalyst 4003 and 4006 Layer 3 Services module provides interVLAN > routing for the Catalyst 4000 family switch and provides Layer 3 switching > between the Gigabit Ethernet interfaces. > > "John Hardman" wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > Hi > > > > OK I'll bite... > > > > Yes there is a difference. It gets a little convoluted, but there is a > > difference. > > > > L3 switching: Think of a L3 switch as a multi port router that operates at > > wire speed. The 2948G-L3 is an example. It is just a 50 port Ethernet > > router. So L3 switching is routing traffic at wire speeds. You could use > one > > of these to route between VLANs, or route between networks. > > > > Inter-VLAN routing: This is a technique, technology that is only used to > > route traffic from one VLAN to other VLAN(s). It generally takes place at > > wire speeds inside a Cat switch with a L3 switch option, but is often see > > with routers that do not work at wire speeds. > > > > So the bottom line... think of a L3 switch as a device, and Inter-VLAN > > routing as a technology. > > > > HTH > > -- > > John Hardman CCNP MCSE > > > > > > ""frank"" wrote in message > > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > > Any difference? > > > > > > "frank" wrote in message > > > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > > > Thanks, > > > > > > > > > > > > Frank > > > > FAQ, list archives, and subscription info: > > > http://www.groupstudy.com/list/cisco.html > > > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > > FAQ, list archives, and subscription info: > > http://www.groupstudy.com/list/cisco.html > > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6104&t=6104 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Can I set up a VPDN, where the user "dials-in" using a T-1? [7:6105]
Hello all: Anybody here who's a Dial expert, consider this. I have 3 routers, A, B, and C. A and B are connected back2back with T-1 WIC's. B and C are connected through Ethernet. I want to set up a VPDN such that B is the LAC (the NAS), and C is the home gateway (the LNS). The things that makes this different from all the standard kinds of VPDN is that there is no dialup connection between A and B. Rather there is just a serial link (with PPP encap) between the client (A) and the LNS (B). Also, the client is not the typical client for VPDN (a person dialing in through a PC), but rather it is a router. I have been fiddling around trying to make this setup work. I works to a point, then I get funny errors (for example, B complains that the home gateway IP address is unreachable, even though it can ping it). So does anybody here know how or even if this setup will work? Thanx Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6105&t=6105 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
help --------------Backup interface [7:6106]
hi i am creating backup interfaces for two of my serial interfaces i wanted to know do i need to add routes for the backup interfaces as well ...or it will be same as entered earlier for the primary interfaces .Pls help on this .. i am using cisco 3600 with x25 . i want to know whether this will work or not .. routes added are x25 route 010104 int ser1/3 backup interface is set like this int ser 1/3 backup int ser2/3 backup delay 20 20 and same for the other interface i can't test this config as the router is on live n/w i cann't bring it down unless i know this isgonna work--so pls help Regards Arun Sharma Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6106&t=6106 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
NAT on router... [7:6107]
Hi, I'm trying to implement NAT on my router first time. My problem is that I want to change one of my server IP but some remote applications are using current IP, so i have to route the traffic to new IP. when I try to ping my nated server then ping does not reply back but same time traceroute return the reply till router itself, but my destination m/c the new ip dose not appear in this traceroute. when i try this from router then it reaches to new IP(destination m/c) but ping still fails. And when I try my service then it also fails. What could be the reason of this and how I can solve this or from where I can get the sample conf. of this type of application. I also check the cisco site and not get solved. Bye __ Do You Yahoo!? Yahoo! Auctions - buy the things you want at great prices http://auctions.yahoo.com/ Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6107&t=6107 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Wanna Be a CCIE? Try This One [7:6076]
Chuck- my answer is Yes. The traffic from the Virtual Linked psuedo-ABR passes back to Area 0, before it's sent onto the intended Area (even if it's directly connected). Phil - Original Message - From: Chuck Larrieu To: Sent: Sunday, May 27, 2001 8:59 PM Subject: Wanna Be a CCIE? Try This One [7:6076] > Ever wonder what the CCIE candidates talk about on the CCIE list? > > The following message came through today. I thought the bright folks on this > list might be curious, and might want to venture an answer. > > Begin original question: > > Guys, > > I wonder if there is anybody who remembers the discussion on Virtual > Links in OSPF. It was posted some time ago but I can't seem to find it. > > The scenario was something like this: > ___ ___ > |Area 0 | |Area1||Area2| > |R0|--| R1 |--| R2 | > |__| |_||_| > > There is a virtual link from area 2 to Area 0 via Area1. Traffic needs to > get to R1 in Area 1 from R2 in Area 2. Assume that the virtual link has to > use R1 (To create the V.Link). Does the traffic flow passed R1 (in Area 1) > to Area 0 and then back to area 1, or does the actual flow just to R1 from > R2. > > I cant remember the conclusion, and I cant seem to find it on the archives. > Quite interesting issues. > > End of original question > > > Chuck > > One IOS to forward them all. > One IOS to find them. > One IOS to summarize them all > And in the routing table bind them. > > -JRR Chambers- > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6108&t=6076 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Wanna Be a CCIE? Try This One [7:6076]
agreedto area 0 then on to the intended area -Original Message- From: Circusnuts [mailto:[EMAIL PROTECTED]] Sent: 28 May 2001 15:50 To: [EMAIL PROTECTED] Subject: Re: Wanna Be a CCIE? Try This One [7:6076] Chuck- my answer is Yes. The traffic from the Virtual Linked psuedo-ABR passes back to Area 0, before it's sent onto the intended Area (even if it's directly connected). Phil - Original Message - From: Chuck Larrieu To: Sent: Sunday, May 27, 2001 8:59 PM Subject: Wanna Be a CCIE? Try This One [7:6076] > Ever wonder what the CCIE candidates talk about on the CCIE list? > > The following message came through today. I thought the bright folks on this > list might be curious, and might want to venture an answer. > > Begin original question: > > Guys, > > I wonder if there is anybody who remembers the discussion on Virtual > Links in OSPF. It was posted some time ago but I can't seem to find it. > > The scenario was something like this: > ___ ___ > |Area 0 | |Area1||Area2| > |R0|--| R1 |--| R2 | > |__| |_||_| > > There is a virtual link from area 2 to Area 0 via Area1. Traffic needs to > get to R1 in Area 1 from R2 in Area 2. Assume that the virtual link has to > use R1 (To create the V.Link). Does the traffic flow passed R1 (in Area 1) > to Area 0 and then back to area 1, or does the actual flow just to R1 from > R2. > > I cant remember the conclusion, and I cant seem to find it on the archives. > Quite interesting issues. > > End of original question > > > Chuck > > One IOS to forward them all. > One IOS to find them. > One IOS to summarize them all > And in the routing table bind them. > > -JRR Chambers- > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6110&t=6076 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Media Filters For Sale [7:6109]
I have FOUR Media Filters for sale {Black Box/Simware}. Interested buyers
contact me directly.
Thanks / RamG
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test [7:6111]
_ Chat with your friends as soon as they come online. Get Rediff Bol at http://bol.rediff.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6111&t=6111 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
TR Int Errr [7:6112]
Hello Gang - I am having problem bring up TR int. Following is the output. R2502#show interface tokenring0 TokenRing0 is initializing, line protocol is down Hardware is TMS380, address is .30ba.4a52 (bia .30ba.4a52) MTU 4464 bytes, BW 16000 Kbit, DLY 630 usec, rely 255/255, load 1/255 Encapsulation SNAP, loopback not set, keepalive set (10 sec) ARP type: SNAP, ARP Timeout 04:00:00 Ring speed: 16 Mbps Duplex: half Mode: Classic token ring station Group Address: 0x, Functional Address: 0x0800 Ethernet Transit OUI: 0x00 Last input never, output never, output hang never Last clearing of "show interface" counters never Queueing strategy: fifo Output queue 0/40, 0 drops; input queue 0/75, 0 drops 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 0 packets input, 0 bytes, 0 no buffer Received 0 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 0 packets output, 0 bytes, 0 underruns 0 output errors, 0 collisions, 54 interface resets 0 output buffer failures, 0 output buffers swapped out 59 transitions R2502#show config Using 774 out of 32762 bytes ! version 12.0 service timestamps debug uptime service timestamps log uptime no service password-encryption service udp-small-servers service tcp-small-servers ! hostname R2502 ! no logging console enable password ram ! ip subnet-zero no ip domain-lookup ! ! ! interface Serial0 bandwidth 64 no ip address no ip directed-broadcast encapsulation ppp no ip route-cache no ip mroute-cache ! interface Serial1 bandwidth 64 ip address 10.1.5.1 255.255.255.0 no ip directed-broadcast encapsulation ppp no ip route-cache no ip mroute-cache ! interface TokenRing0 no ip address no ip directed-broadcast no ip route-cache no ip mroute-cache ring-speed 16 ! ip classless ! ! line con 0 transport input none line aux 0 transport input all line vty 0 4 login ! end Thanks / RamG Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6112&t=6112 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Passed CCIE Written [7:6113]
Hi all, I passed CCIE written,Just narrowly escaped.Anyhow cleared it.Now left with the difficult part to go,The LAB. Can someone suggest me how to proceed for preparing the Lab. Also I am from India and to my knowledge there is no company which offers a practise setup on rental.If anyone has come across,pls let me know. Kind Regards /Thangavel _ Chat with your friends as soon as they come online. Get Rediff Bol at http://bol.rediff.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6113&t=6113 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Curious Q [7:6114]
I have 5 routers. When I issue show ver each router returns different output regarding how the router was started. Is something wrong? R2501 uptime is 23 minutes System returned to ROM by power-on System image file is "flash:c2500-js-l.122-1.bin" R2502 uptime is 26 minutes System restarted by power-on System image file is "flash:c2500-i-l.120-9.bin" R2503 uptime is 24 minutes System returned to ROM by power-on System image file is "flash:c2500-js-l.122-1.bin" R2504 uptime is 26 minutes System restarted by power-on System image file is "igs-ir-l.110-10.3", booted via flash 2511 uptime is 27 minutes System restarted by power-on System image file is "c2500-js-l.112-9.bin", booted via flash Thanks / RamG Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6114&t=6114 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: TR Int Errr [7:6112]
How about 'ring-speed 4' ? "RamG" wrote in message ... >Hello Gang - I am having problem bring up TR int. Following is the output. > >R2502#show interface tokenring0 >TokenRing0 is initializing, line protocol is down > Hardware is TMS380, address is .30ba.4a52 (bia .30ba.4a52) > MTU 4464 bytes, BW 16000 Kbit, DLY 630 usec, rely 255/255, load 1/255 > Encapsulation SNAP, loopback not set, keepalive set (10 sec) > ARP type: SNAP, ARP Timeout 04:00:00 > Ring speed: 16 Mbps > Duplex: half > Mode: Classic token ring station > Group Address: 0x, Functional Address: 0x0800 > Ethernet Transit OUI: 0x00 > Last input never, output never, output hang never > Last clearing of "show interface" counters never > Queueing strategy: fifo > Output queue 0/40, 0 drops; input queue 0/75, 0 drops > 5 minute input rate 0 bits/sec, 0 packets/sec > 5 minute output rate 0 bits/sec, 0 packets/sec > 0 packets input, 0 bytes, 0 no buffer > Received 0 broadcasts, 0 runts, 0 giants, 0 throttles > 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort > 0 packets output, 0 bytes, 0 underruns > 0 output errors, 0 collisions, 54 interface resets > 0 output buffer failures, 0 output buffers swapped out > 59 transitions > >R2502#show config >Using 774 out of 32762 bytes >! >version 12.0 >service timestamps debug uptime >service timestamps log uptime >no service password-encryption >service udp-small-servers >service tcp-small-servers >! >hostname R2502 >! >no logging console >enable password ram >! >ip subnet-zero >no ip domain-lookup >! >! >! >interface Serial0 > bandwidth 64 > no ip address > no ip directed-broadcast > encapsulation ppp > no ip route-cache > no ip mroute-cache >! >interface Serial1 > bandwidth 64 > ip address 10.1.5.1 255.255.255.0 > no ip directed-broadcast > encapsulation ppp > no ip route-cache > no ip mroute-cache >! >interface TokenRing0 > no ip address > no ip directed-broadcast > no ip route-cache > no ip mroute-cache > ring-speed 16 >! >ip classless >! >! >line con 0 > transport input none >line aux 0 > transport input all >line vty 0 4 > login >! >end > >Thanks / RamG >FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6115&t=6112 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Is it really worth it? "CCIE" [7:5725]
Question, Is it the experts that kill networks in real life? (probably) When does it become worth it?... How about the period (today) where companies are paying vast amounts of money for CCIE's to be part of their network team. That's when it becomes worth it. If you are good enough then prove it, 2 days out of your life to do a lab test is not a long time. I spent a little more than 7 years of my life at university doing a PHD in Physics but was unable to get a job so went into IT (was all that education worth it), some might argue that it was. Certifications will always exist and if it sells then you got to have one. I believe in the contracting market it is important to combine the experience with recognised certification. >= Original Message From "Robert Padjen" = >Chuck - > >I always enjoy the positions you present. You are >correct, although I am concerned with the posture that >a CCIE is an expert-regardless of the title on the >certification. My issue is that an expert would know >better than to create a small network with OSPF, RIP, >BGP, EIGRP and IGRP, while then killing themselves to >fix it. In the same vain, a test, and success on that >test, would at best show mastery of the materials on >that test. The hard and soft skills needed to be an >expert in this field are well beyond any certification >exam. > >For example, I work as an expert witness in legal >matters. I carry the title 'expert' as I am >knowledgeable, certified, published and practiced in >the area of expertise. Even with all this, I need to >learn and integrate legal concepts and technical ones >in order to do the job well. > >My perception of the CCIE (and other certs) is that >many networkers feel that its a one-time deal. I got a >840/1000 - I'm hot *$&@. ;) This is the construct >that bothers me the most. In the absence of a better >alternative it's what we have, but it still concerns >me and I think as an industry we can do better. > > >--- Chuck Larrieu wrote: >> As someone who has devoted a bit of time and more >> than a couple of dollars >> pursuing certification, and as someone who has >> failed one lab attempt, and >> as someone who collects good advice from CCIE's and >> others, I can no longer >> resist opening my big mouth on this. >> >> The CCIE Lab exam is a test. Nothing more. Nothing >> less. It has nothing to >> do with good practice. It has nothing to do with >> real world. >> >> Consider: Cisco wants you to be able to redistribute >> between any two >> protocols. How do you test this, given the >> constraints of the lab? >> >> Cisco wants you to understand routing protocol >> behaviour. How do you test >> that? Do bizarre redistribution requirements and >> constraints provide just >> such a means? >> >> Cisco wants you to understand the implications of >> NMBA on Cisco routers. How >> do you test that? >> >> Cisco wants you to understand how OSPF works? How do >> you test that, >> particularly in conjunction with NMBA? >> >> Cisco wants you to understand how routing works. How >> do you test a >> candidate's real understanding if you can fake your >> way through by using >> static routes? >> >> Cisco wants you to understand a number of >> alternative solutions to a number >> of problems. So they create scenarios which require >> a number of > >__ >Do You Yahoo!? >Yahoo! Auctions - buy the things you want at great prices >http://auctions.yahoo.com/ >FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] --- The Totalise Email system, probably the most flexible email system in the world. To register for an account goto http://www.totalise.net Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6116&t=5725 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Wanna Be a CCIE? Try This One [7:6076]
Guys, The actual traffic will not be routed up to area 0... Area 0 has been extended down to R2, so R2 is now a backbone router. R2 has interfaces in 3 areas now: Area1, Area2, and Area0 by means of it's virtual link. Any traffic originating in Area2 destined for Area1 will be routed directly by R2. This satisfies the "Interarea traffic must traverse the backbone" rule, because R2 *is* a backbone router. This is not theory... It is fact. Alan - Original Message - From: "Andrew Larkins" To: Sent: Monday, May 28, 2001 10:13 AM Subject: RE: Wanna Be a CCIE? Try This One [7:6076] > agreedto area 0 then on to the intended area > > -Original Message- > From: Circusnuts [mailto:[EMAIL PROTECTED]] > Sent: 28 May 2001 15:50 > To: [EMAIL PROTECTED] > Subject: Re: Wanna Be a CCIE? Try This One [7:6076] > > > Chuck- my answer is Yes. The traffic from the Virtual Linked psuedo-ABR > passes back to Area 0, before it's sent onto the intended Area (even if it's > directly connected). > > Phil > > > - Original Message - > From: Chuck Larrieu > To: > Sent: Sunday, May 27, 2001 8:59 PM > Subject: Wanna Be a CCIE? Try This One [7:6076] > > > > Ever wonder what the CCIE candidates talk about on the CCIE list? > > > > The following message came through today. I thought the bright folks on > this > > list might be curious, and might want to venture an answer. > > > > Begin original question: > > > > Guys, > > > > I wonder if there is anybody who remembers the discussion on Virtual > > Links in OSPF. It was posted some time ago but I can't seem to find it. > > > > The scenario was something like this: > > ___ ___ > > |Area 0 | |Area1||Area2| > > |R0|--| R1 |--| R2 | > > |__| |_||_| > > > > There is a virtual link from area 2 to Area 0 via Area1. Traffic needs to > > get to R1 in Area 1 from R2 in Area 2. Assume that the virtual link has to > > use R1 (To create the V.Link). Does the traffic flow passed R1 (in Area 1) > > to Area 0 and then back to area 1, or does the actual flow just to R1 from > > R2. > > > > I cant remember the conclusion, and I cant seem to find it on the > archives. > > Quite interesting issues. > > > > End of original question > > > > > > Chuck > > > > One IOS to forward them all. > > One IOS to find them. > > One IOS to summarize them all > > And in the routing table bind them. > > > > -JRR Chambers- > > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6117&t=6076 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Curious Q [7:6114]
On Mon, 28 May 2001, RamG wrote: > I have 5 routers. When I issue show ver each router returns different > output regarding how the router was started. Is something wrong? Not necessarily. It could be nothing more than a difference in ROM versions or IOS versions. Have you looked at the rest of what show ver tells you? > R2501 uptime is 23 minutes > System returned to ROM by power-on > System image file is "flash:c2500-js-l.122-1.bin" > > R2502 uptime is 26 minutes > System restarted by power-on > System image file is "flash:c2500-i-l.120-9.bin" > > R2503 uptime is 24 minutes > System returned to ROM by power-on > System image file is "flash:c2500-js-l.122-1.bin" > > R2504 uptime is 26 minutes > System restarted by power-on > System image file is "igs-ir-l.110-10.3", booted via flash > > 2511 uptime is 27 minutes > System restarted by power-on > System image file is "c2500-js-l.112-9.bin", booted via flash -- "Someone approached me and asked me to teach a javascript course. I was about to decline, saying that my complete ignorance of the subject made me unsuitable, then I thought again, that maybe it doesn't, as driving people away from it is a desirable outcome." --Me Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6118&t=6114 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Different kind of switching [7:6064]
Check out "Inside Cisco IOS Software Architecture." by Bollaprada, Murphy, and White. At 10:13 AM 5/27/01, you wrote: >Hi, > >Would someone can tell me how can I locate the info about the difference >between different kinds of switching, such as fast switching, flow >switching, distributed fast switching etc. > >Thanks > >regards, >mak >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6119&t=6064 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Is it really worth it? "CCIE" [7:5725]
As a consultant, you'd better believe it's important, and becoming moreso all the time. Here's an example. A couple of weeks ago, a buddy of mine (who is a CCIE) and I were at our office. Our sales guy got a call about a problem at a bank, and he called me into the office so I could get some information about the problem. Token Ring environment, with some DLSW. After I'd gotten as much as I could over the phone, they asked how quickly I could be at the site. We told them about a half hour... They asked specifically for a CCIE. My buddy got the call. Fortunately, I went along too, as I wasn't doing anything important at the time. It's good thing I did too, because in a previous life, I had a ton of Token Ring experience, and my co-worker had virtually none. As it turned out, I was the one that did most of the talking while on site, and I was the one that gave them the troubleshooting strategy that ended up getting the problem identified, and ultimately solved. Did they ask which of us had more experience? (I have 8+ years of Cisco, my friend has about 4.) No, they didn't ask that. Did they ask which of us had experience relevant to their specific environment? (I have a great deal of Token Ring, and alot of production DLSW; my friend has virtually no Token Ring experience, and only enough DLSW to have passed the lab) No, they didn't ask that. They asked if I was a CCIE. No, I'm not yet a CCIE. My co-worker is though, and they wanted him to come solve their problem. This is the unfortunate reality of the marketplace. The certification talks, and the experience is being overlooked. I only decided to get my CCIE about a year ago, because I saw this kind of thing starting to happen more frequently. Because of the waiting list for the lab, I haven't yet had a chance to take it. Had I begun a year earlier, I'd probably have had a chance to take it 2 or 3 times by now. I don't view the CCIE as some sort of life changing event in my life... I'm getting it out of self-defense. If I am being compared to another candidate, I want to be certain that the number of years, and the diversity of my experience, are factored into the comparison. Right now, if the other candidate is a CCIE, I can't be sure that my resume will even be read. My pursuit of the CCIE is motivated by the need to be taken seriously. When the number of CCIEs was very low, this wasn't much of a problem. Now that it's become a little more common, I find that I'm losing my competitive edge "on paper," and that's going to change. Alan - Original Message - From: "Duncan Stuart" To: Sent: Monday, May 28, 2001 11:05 AM Subject: RE: Is it really worth it? "CCIE" [7:5725] [snip] > I believe in the contracting market it is important to combine > the experience with recognized certification. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6120&t=5725 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
VoIP, STAC and cRTP problems ?? [7:6121]
Hi there, PPP link can be configured with STAC/Predictor compression (Layer 2) cRTP compression algorithm to compress UDP packets nameley for voice (layer 3) The problem comes about, when you want to enable both, PPP STAC and cRTP on the same interface. Cisco's IOS accepts both commands, but uses only PPP STAC over cRTP. (cRTP is enabled but does not function : Verified this by sho ip rtp header-compression, and debug ip rtp header-compression) Here is a sample config of the serial interface : interface Serial0/0 ip address 10.1.2.2 255.255.255.252 encapsulation ppp ip tcp header-compression iphc-format no ip mroute-cache compress stac ip rtp header-compression iphc-format Has anyone also had the same problem ?? THANKS IN ADVANCE Aki Christopoulos Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6121&t=6121 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Passed CCIE Written [7:6113]
Congrats dude! Rik -Original Message- From: thangavel vishnukumar mudaliar [mailto:[EMAIL PROTECTED]] Sent: Monday, May 28, 2001 10:47 AM To: [EMAIL PROTECTED] Subject: Passed CCIE Written [7:6113] Hi all, I passed CCIE written,Just narrowly escaped.Anyhow cleared it.Now left with the difficult part to go,The LAB. Can someone suggest me how to proceed for preparing the Lab. Also I am from India and to my knowledge there is no company which offers a practise setup on rental.If anyone has come across,pls let me know. Kind Regards /Thangavel _ Chat with your friends as soon as they come online. Get Rediff Bol at http://bol.rediff.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6122&t=6113 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
trunking [7:6123]
My environment is currently running Cabletron equipment that has trunking set to 802.1q. I'm putting in a new Catalyst 6500 switch and will be tieing that into the Cabletron network. My question is, since I'm not going to trunk between the two but just to have a cross connect to communicate between the two networks, should I be using ISL trunking on the Cisco switch or should I be using 802.1q so that it is compatible with the Cabletron network. In addition, if I do use 802.1q trunking, will that mess up the Cabltron side. Thanks. _ Get your FREE download of MSN Explorer at http://explorer.msn.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6123&t=6123 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: What do "interVLAN routing "and" Layer 3 switching " mean [7:6124]
I think that what you have described is "multi-layer" switching. As Howard has mentioned in past posts, L3S is simply a marketing term as is wire-speed switching. Layer 3 Switching is simply a line card, typically in a chassis-based system, that can make routing decisions (layer 3) using hardware-based technology (layer 2). By not relying on the fundamentally slow software decision making, this process greatly enhances the speed at which the decisions are made. There are other types of L3S devices, such as a 2948G-L3. This switch uses ASICs to make routing decisions within hardware. When you purchase one of these beasts, you basically have a 48-port gigabit router! Inter-VLAN routing is just routing. Basically, it can be performed with any routing-capable device so long as you have the appropriate interfaces. The difference between Inter-VLAn routing and legacy routing really has nothing to do with routing at all. The real difference is how the LANs have been broken out: either Layer 2 (VLANs) or Layer 3 (IP subnetting). If you know something about routing, then you know something about Inter-VLAN routing. Read up on VLANs (I suggest the Kenndy Clark CCIE switching book) and all will become clear. Rik -Original Message- From: Gareth Hinton [mailto:[EMAIL PROTECTED]] Sent: Monday, May 28, 2001 6:09 AM To: [EMAIL PROTECTED] Subject: Re: What do "interVLAN routing "and" Layer 3 switching " mean [7:6104] Hi Frank, I think the best description for Layer 3 Switching is "Route once - Switch many". The first time a packet in a particular "flow" passes through, a routing function will be used (on a different card, or even in a different device). But to speed up the processing of any further packets in that flow, a cache is created in the switch to remember this flow. The next time a packet comes through which matches this flow it will be switched without using the router functionality, therefore speeding things up. The definition of a flow can differ depending on configuration. For instance, normally a flow may be any packet to a particular destination, but if , for example, an extended access list is configured, the criteria for the flow may tighten up i.e. to be considered part of a flow, the source and destination are compared. Inter-VLAN routing means a packet gets routed every time. Regards, Gaz ""frank"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > What does the following mean ?it's cut from a description of WS-X4232-L3 on > cisco website. > > > The Catalyst 4003 and 4006 Layer 3 Services module provides interVLAN > routing for the Catalyst 4000 family switch and provides Layer 3 switching > between the Gigabit Ethernet interfaces. > > "John Hardman" wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > Hi > > > > OK I'll bite... > > > > Yes there is a difference. It gets a little convoluted, but there is a > > difference. > > > > L3 switching: Think of a L3 switch as a multi port router that operates at > > wire speed. The 2948G-L3 is an example. It is just a 50 port Ethernet > > router. So L3 switching is routing traffic at wire speeds. You could use > one > > of these to route between VLANs, or route between networks. > > > > Inter-VLAN routing: This is a technique, technology that is only used to > > route traffic from one VLAN to other VLAN(s). It generally takes place at > > wire speeds inside a Cat switch with a L3 switch option, but is often see > > with routers that do not work at wire speeds. > > > > So the bottom line... think of a L3 switch as a device, and Inter-VLAN > > routing as a technology. > > > > HTH > > -- > > John Hardman CCNP MCSE > > > > > > ""frank"" wrote in message > > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > > Any difference? > > > > > > "frank" wrote in message > > > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > > > Thanks, > > > > > > > > > > > > Frank > > > > FAQ, list archives, and subscription info: > > > http://www.groupstudy.com/list/cisco.html > > > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > > FAQ, list archives, and subscription info: > > http://www.groupstudy.com/list/cisco.html > > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6124&t=6124 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondis
Re: What do "interVLAN routing "and" Layer 3 switching " mean [7:6125]
>Hi > >OK I'll bite... > >Yes there is a difference. It gets a little convoluted, but there is a >difference. > >L3 switching: Think of a L3 switch as a multi port router that operates at >wire speed. The 2948G-L3 is an example. It is just a 50 port Ethernet >router. So L3 switching is routing traffic at wire speeds. You could use one >of these to route between VLANs, or route between networks. > >Inter-VLAN routing: This is a technique, technology that is only used to >route traffic from one VLAN to other VLAN(s). It generally takes place at >wire speeds inside a Cat switch with a L3 switch option, but is often see >with routers that do not work at wire speeds. > >So the bottom line... think of a L3 switch as a device, and Inter-VLAN >routing as a technology. > >HTH >-- >John Hardman CCNP MCSE Your bottom line is a nice way to distinguish, one I don't usually use but one that makes sense. My biggest problem with some of these terms is that they really don't have any technical meaning. They may have product family connotations, but they are often no more than salesspeak. Routing is routing, whether inter-VLAN or not. Routing is relaying based on layer 3 information. There are separate control planes (path determination) and forwarding planes (packet forwarding) in any router of reasonable performance. Layer 3 switches and routers are different names for a device that does the same thing. It might be argued that an inter-VLAN switch/router has to understand VLAN trunking protocols as well as layer 3 headers. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6125&t=6125 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: NAT on router... [7:6107]
If I understand you correctly, the problem is with your NAT statements on the router. Make sure you are doing inside destination translation. You mave to have use static mappings (one to one) since you want reach a box inside your network. If you need more help post your config. Somebody will give you a hand. KD ""Gunjan Mathur"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Hi, > > I'm trying to implement NAT on my router first time. > My problem is that I want to change one of my server > IP but some remote applications are using current IP, > so i have to route the traffic to new IP. > > when I try to ping my nated server then ping does not > reply back but same time traceroute return the reply > till router itself, but my destination m/c the new ip > dose not appear in this traceroute. when i try this > from router then it reaches to new IP(destination m/c) > but ping still fails. > And when I try my service then it also fails. > What could be the reason of this and how I can solve > this or from where I can get the sample conf. of this > type of application. I also check the cisco site and > not get solved. > > Bye > > __ > Do You Yahoo!? > Yahoo! Auctions - buy the things you want at great prices > http://auctions.yahoo.com/ > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6127&t=6107 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: What do "interVLAN routing "and" Layer 3 switching " mean [7:6126]
Hi It means that the 4003 and 4006 has a L3 module that can provide Inter-VLAN routing. It might be limited to only provide Inter-VLAN routing on the FE ports and have full L3 function on the GE ports. Keep in mind that Cisco is still new to L3 and as such they have not fully implemented it on all platforms, e.g. the 2948G-L3 is not capable of doing full ACLs on all ports, just the GE ports, or at least in the last IOS I used on one. -- John Hardman CCNP MCSE ""frank"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > What does the following mean ?it's cut from a description of WS-X4232-L3 on > cisco website. > > > The Catalyst 4003 and 4006 Layer 3 Services module provides interVLAN > routing for the Catalyst 4000 family switch and provides Layer 3 switching > between the Gigabit Ethernet interfaces. > > "John Hardman" wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > Hi > > > > OK I'll bite... > > > > Yes there is a difference. It gets a little convoluted, but there is a > > difference. > > > > L3 switching: Think of a L3 switch as a multi port router that operates at > > wire speed. The 2948G-L3 is an example. It is just a 50 port Ethernet > > router. So L3 switching is routing traffic at wire speeds. You could use > one > > of these to route between VLANs, or route between networks. > > > > Inter-VLAN routing: This is a technique, technology that is only used to > > route traffic from one VLAN to other VLAN(s). It generally takes place at > > wire speeds inside a Cat switch with a L3 switch option, but is often see > > with routers that do not work at wire speeds. > > > > So the bottom line... think of a L3 switch as a device, and Inter-VLAN > > routing as a technology. > > > > HTH > > -- > > John Hardman CCNP MCSE > > > > > > ""frank"" wrote in message > > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > > Any difference? > > > > > > "frank" wrote in message > > > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > > > Thanks, > > > > > > > > > > > > Frank > > > > FAQ, list archives, and subscription info: > > > http://www.groupstudy.com/list/cisco.html > > > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > > FAQ, list archives, and subscription info: > > http://www.groupstudy.com/list/cisco.html > > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6126&t=6126 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: trunking [7:6123]
ISL is Cisco proprietary. 802.1Q is an open standard so that would be the way to connect the boxes. Check out "Cisco LAN Switching" by Clark and Hamilton. > -Original Message- > From: SH Wesson [mailto:[EMAIL PROTECTED]] > Sent: Monday, May 28, 2001 12:03 PM > To: [EMAIL PROTECTED] > Subject: trunking [7:6123] > > > My environment is currently running Cabletron equipment that > has trunking > set to 802.1q. I'm putting in a new Catalyst 6500 switch and > will be tieing > that into the Cabletron network. My question is, since I'm > not going to > trunk between the two but just to have a cross connect to communicate > between the two networks, should I be using ISL trunking on > the Cisco switch > or should I be using 802.1q so that it is compatible with the > Cabletron > network. In addition, if I do use 802.1q trunking, will that > mess up the > Cabltron side. Thanks. > > > _ > Get your FREE download of MSN Explorer at http://explorer.msn.com > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > Report misconduct > and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6128&t=6123 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: trunking [7:6123]
Cabletron doesnt support ISL so you would have to do dot1q --- Daniel Cotts wrote: > ISL is Cisco proprietary. 802.1Q is an open standard > so that would be the > way to connect the boxes. Check out "Cisco LAN > Switching" by Clark and > Hamilton. > > > -Original Message- > > From: SH Wesson [mailto:[EMAIL PROTECTED]] > > Sent: Monday, May 28, 2001 12:03 PM > > To: [EMAIL PROTECTED] > > Subject: trunking [7:6123] > > > > > > My environment is currently running Cabletron > equipment that > > has trunking > > set to 802.1q. I'm putting in a new Catalyst 6500 > switch and > > will be tieing > > that into the Cabletron network. My question is, > since I'm > > not going to > > trunk between the two but just to have a cross > connect to communicate > > between the two networks, should I be using ISL > trunking on > > the Cisco switch > > or should I be using 802.1q so that it is > compatible with the > > Cabletron > > network. In addition, if I do use 802.1q > trunking, will that > > mess up the > > Cabltron side. Thanks. > > > > > > > _ > > Get your FREE download of MSN Explorer at > http://explorer.msn.com > > FAQ, list archives, and subscription info: > > http://www.groupstudy.com/list/cisco.html > > Report misconduct > > and Nondisclosure violations to > [EMAIL PROTECTED] > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] = Spencer Plantier Lan Engineer Voice 919-474-1300 ext 0873 Cell 919-696-8848 __ Do You Yahoo!? Yahoo! Auctions - buy the things you want at great prices http://auctions.yahoo.com/ Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6129&t=6123 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: What do "interVLAN routing "and" Layer 3 switching " mean [7:6130]
Something about saying cisco is "new" to L3 bothers me :) Switching in hardware based on IP headers maybe, but layer 3? I think they've proven themselves there. Pete *** REPLY SEPARATOR *** On 5/28/2001 at 1:14 PM John Hardman wrote: >Hi > >It means that the 4003 and 4006 has a L3 module that can provide Inter-VLAN >routing. It might be limited to only provide Inter-VLAN routing on the FE >ports and have full L3 function on the GE ports. > >Keep in mind that Cisco is still new to L3 and as such they have not fully >implemented it on all platforms, e.g. the 2948G-L3 is not capable of doing >full ACLs on all ports, just the GE ports, or at least in the last IOS I >used on one. > >-- >John Hardman CCNP MCSE > > >""frank"" wrote in message >[EMAIL PROTECTED]">news:[EMAIL PROTECTED]... >> What does the following mean ?it's cut from a description of WS-X4232-L3 >on >> cisco website. >> >> >> The Catalyst 4003 and 4006 Layer 3 Services module provides interVLAN >> routing for the Catalyst 4000 family switch and provides Layer 3 >switching >> between the Gigabit Ethernet interfaces. >> >> "John Hardman" wrote in message >> [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... >> > Hi >> > >> > OK I'll bite... >> > >> > Yes there is a difference. It gets a little convoluted, but there is a >> > difference. >> > >> > L3 switching: Think of a L3 switch as a multi port router that operates >at >> > wire speed. The 2948G-L3 is an example. It is just a 50 port Ethernet >> > router. So L3 switching is routing traffic at wire speeds. You could >use >> one >> > of these to route between VLANs, or route between networks. >> > >> > Inter-VLAN routing: This is a technique, technology that is only used >to >> > route traffic from one VLAN to other VLAN(s). It generally takes place >at >> > wire speeds inside a Cat switch with a L3 switch option, but is often >see >> > with routers that do not work at wire speeds. >> > >> > So the bottom line... think of a L3 switch as a device, and Inter-VLAN >> > routing as a technology. >> > >> > HTH >> > -- >> > John Hardman CCNP MCSE >> > >> > >> > ""frank"" wrote in message >> > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... >> > > Any difference? >> > > >> > > "frank" wrote in message >> > > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... >> > > > Thanks, >> > > > >> > > > >> > > > Frank >> > > > FAQ, list archives, and subscription info: >> > > http://www.groupstudy.com/list/cisco.html >> > > > Report misconduct and Nondisclosure violations to >[EMAIL PROTECTED] >> > > FAQ, list archives, and subscription info: >> > http://www.groupstudy.com/list/cisco.html >> > > Report misconduct and Nondisclosure violations to >[EMAIL PROTECTED] >> > FAQ, list archives, and subscription info: >> http://www.groupstudy.com/list/cisco.html >> > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] >> FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6130&t=6130 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: trunking [7:6123]
If the cabletron thing is compliant with the IEEE spec, which only specifies one instance of STP on a trunk, you will need to configure (or just be aware) of PVST+'s existence. - Original Message - From: "Daniel Cotts" To: Sent: Monday, May 28, 2001 1:30 PM Subject: RE: trunking [7:6123] > ISL is Cisco proprietary. 802.1Q is an open standard so that would be the > way to connect the boxes. Check out "Cisco LAN Switching" by Clark and > Hamilton. > > > -Original Message- > > From: SH Wesson [mailto:[EMAIL PROTECTED]] > > Sent: Monday, May 28, 2001 12:03 PM > > To: [EMAIL PROTECTED] > > Subject: trunking [7:6123] > > > > > > My environment is currently running Cabletron equipment that > > has trunking > > set to 802.1q. I'm putting in a new Catalyst 6500 switch and > > will be tieing > > that into the Cabletron network. My question is, since I'm > > not going to > > trunk between the two but just to have a cross connect to communicate > > between the two networks, should I be using ISL trunking on > > the Cisco switch > > or should I be using 802.1q so that it is compatible with the > > Cabletron > > network. In addition, if I do use 802.1q trunking, will that > > mess up the > > Cabltron side. Thanks. > > > > > > _ > > Get your FREE download of MSN Explorer at http://explorer.msn.com > > FAQ, list archives, and subscription info: > > http://www.groupstudy.com/list/cisco.html > > Report misconduct > > and Nondisclosure violations to [EMAIL PROTECTED] > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6131&t=6123 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: TR Int Errr [7:6112]
Hello Gang - I am having problem bring up TR int. Following is the debug output. R2502#debug token ring Token Ring Interface debugging is on R2502# 02:46:48: %TR-3-OPENFAIL: Unit 0, open failed: Phys. Insertion, ring beaconing 02:46:50: TR0 starting. 02:47:12: %TR-3-OPENFAIL: Unit 0, open failed: Phys. Insertion, ring beaconing 02:47:14: TR0 starting. 02:47:35: %TR-3-OPENFAIL: Unit 0, open failed: Phys. Insertion, ring beaconing 02:47:37: TR0 starting. 02:47:59: %TR-3-OPENFAIL: Unit 0, open failed: Phys. Insertion, ring beaconing 02:48:01: TR0 starting. I browsed through cisco site to figure out what is the problem with TR based on above debug output. Following is the answer. Can somebody help me to bring up the TR. Ring Beacon The interface is transmitting beacon frames onto the ring. Something is wrong with the ring. R2502#show interface tokenring0 TokenRing0 is initializing, line protocol is down Hardware is TMS380, address is .30ba.4a52 (bia .30ba.4a52) MTU 4464 bytes, BW 16000 Kbit, DLY 630 usec, rely 255/255, load 1/255 Encapsulation SNAP, loopback not set, keepalive set (10 sec) ARP type: SNAP, ARP Timeout 04:00:00 Ring speed: 16 Mbps Duplex: half Mode: Classic token ring station Group Address: 0x, Functional Address: 0x0800 Ethernet Transit OUI: 0x00 Last input never, output never, output hang never Last clearing of "show interface" counters never Queueing strategy: fifo Output queue 0/40, 0 drops; input queue 0/75, 0 drops 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 0 packets input, 0 bytes, 0 no buffer Received 0 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 0 packets output, 0 bytes, 0 underruns 0 output errors, 0 collisions, 54 interface resets 0 output buffer failures, 0 output buffers swapped out 59 transitions R2502#show config Using 774 out of 32762 bytes ! version 12.0 service timestamps debug uptime service timestamps log uptime no service password-encryption service udp-small-servers service tcp-small-servers ! hostname R2502 ! no logging console enable password ram ! ip subnet-zero no ip domain-lookup ! ! ! interface Serial0 bandwidth 64 no ip address no ip directed-broadcast encapsulation ppp no ip route-cache no ip mroute-cache ! interface Serial1 bandwidth 64 ip address 10.1.5.1 255.255.255.0 no ip directed-broadcast encapsulation ppp no ip route-cache no ip mroute-cache ! interface TokenRing0 no ip address no ip directed-broadcast no ip route-cache no ip mroute-cache ring-speed 16 ! ip classless ! ! line con 0 transport input none line aux 0 transport input all line vty 0 4 login ! end Thanks / RamG Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6132&t=6112 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Curious Q [7:6114]
On Mon, 28 May 2001, RamG wrote: > > E - Output of show ver for one of the router which returned to ROM by > power-on. I recently upgraded ios to 12.2 ver. Did I make any mistake > during upgrade. 1. Please share with the list. Just because I answered your initial question doesn't mean that I will answer the followup. And even if I do, others may learn from the thread. I cc'd the list on this. Please do so on any follow-up. 2. Again, not necessarily. Compare *all* the information that show ver gives you across all routers, and I'm pretty sure you will see different ROM versions, or different IOS versions, or both, that explain the slightly different messages that you see. 3. Is this your only cause for worry? Or are there other problems that you think may be linked to this one? If so, what are they? > RamG > > R2501#show ver > Cisco Internetwork Operating System Software > IOS (tm) 2500 Software (C2500-JS-L), Version 12.2(1), RELEASE SOFTWARE (fc2) > Copyright (c) 1986-2001 by cisco Systems, Inc. > Compiled Fri 27-Apr-01 16:11 by cmong > Image text-base: 0x03076B18, data-base: 0x1000 > > ROM: System Bootstrap, Version 11.0(10c)XB1, PLATFORM SPECIFIC RELEASE > SOFTWARE (fc1) > BOOTFLASH: 3000 Bootstrap Software (IGS-BOOT-R), Version 11.0(10c)XB1, > PLATFORM SPECIFIC RELEA > SE SOFTWARE (fc1) > > R2501 uptime is 1 hour, 41 minutes > System returned to ROM by power-on > System image file is "flash:c2500-js-l.122-1.bin" > > cisco 2500 (68030) processor (revision D) with 16384K/2048K bytes of memory. > Processor board ID 01560991, with hardware revision > Bridging software. > X.25 software, Version 3.0.0. > SuperLAT software (copyright 1990 by Meridian Technology Corp). > TN3270 Emulation software. > 1 Ethernet/IEEE 802.3 interface(s) > 2 Serial network interface(s) > 32K bytes of non-volatile configuration memory. > 16384K bytes of processor board System flash (Read ONLY) > > Configuration register is 0x2102 > > -Original Message- > From: ElephantChild [mailto:[EMAIL PROTECTED]] > Sent: Monday, May 28, 2001 8:49 AM > To: RamG > Cc: [EMAIL PROTECTED] > Subject: Re: Curious Q [7:6114] > > > On Mon, 28 May 2001, RamG wrote: > > > I have 5 routers. When I issue show ver each router returns different > > output regarding how the router was started. Is something wrong? > > Not necessarily. It could be nothing more than a difference in ROM > versions or IOS versions. Have you looked at the rest of what show ver > tells you? > > > R2501 uptime is 23 minutes > > System returned to ROM by power-on > > System image file is "flash:c2500-js-l.122-1.bin" > > > > R2502 uptime is 26 minutes > > System restarted by power-on > > System image file is "flash:c2500-i-l.120-9.bin" > > > > R2503 uptime is 24 minutes > > System returned to ROM by power-on > > System image file is "flash:c2500-js-l.122-1.bin" > > > > R2504 uptime is 26 minutes > > System restarted by power-on > > System image file is "igs-ir-l.110-10.3", booted via flash > > > > 2511 uptime is 27 minutes > > System restarted by power-on > > System image file is "c2500-js-l.112-9.bin", booted via flash > > -- > "Someone approached me and asked me to teach a javascript course. I was > about to decline, saying that my complete ignorance of the subject made > me unsuitable, then I thought again, that maybe it doesn't, as driving > people away from it is a desirable outcome." --Me > > > -- "Someone approached me and asked me to teach a javascript course. I was about to decline, saying that my complete ignorance of the subject made me unsuitable, then I thought again, that maybe it doesn't, as driving people away from it is a desirable outcome." --Me Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6133&t=6114 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: TR Int Errr [7:6112]
Newbie question, On your router is the "show conf" giving us the contents of the startup-config or the running-config? On your router are they both the same? Saved? Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6134&t=6112 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: TR Int Errr [7:6112]
It is startup-config info. I tried changing ring speed to 4 & later to 16 to see it could fix the problem. Changing the ring speed did not do any good. Thanks / RamG ""Larry trav"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Newbie question, > > On your router is the "show conf" giving us the contents of the > startup-config or the running-config? On your router are they both the same? > Saved? > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6135&t=6112 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Question on the meaning of "tunneling" [7:6136]
Question came up on the CCIE group revolving around the meaning of the term "tunnel" I think I am seeing where the author of the below quote is going. I'm wondering if one of the folks on this group might be willing to offer some insight. The question originated with someone calling an OSPF virtual link a tunnel. After some back and forth, someone offered the following (edited for brevity, and clarity): "...understand the basics of software tunneling. TUNNELING PROVIDES ALTERNATIVE TO THE NATIVE CONNECTIVITY PROCEDURE. In this case there is no physical/datalink connectivity, so connectivity is achieved through software interface. " Virtual Links are not tunnels, you can't transport traffic over them, they just carry routing information. They are TUNNELING this routing information through area 1. THIS IS THE PRINCIPLE OF TUNNELLING. IT IS NOT ONLY APPLICATION DATA THAT IS TUNNELED : IN THIS CASE ROUTING UPDATES ARE BEING TUNNELED! "you seem to know only Cisco exam material (tunnel interfaces) please read further afield and grasp generics/basics of software programming principles, " Can anyone offer further clarification here? Thanks Chuck One IOS to forward them all. One IOS to find them. One IOS to summarize them all And in the routing table bind them. -JRR Chambers- Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6136&t=6136 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Curious Q [7:6114]
Thanks to I & others for the feedback. Learnt that different ios can show different output in show ver. I was curious to find out is something wrong after upgrade. I did not notice this before. Thanks / RamG ""ElephantChild"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > On Mon, 28 May 2001, RamG wrote: > > > > > E - Output of show ver for one of the router which returned to ROM by > > power-on. I recently upgraded ios to 12.2 ver. Did I make any mistake > > during upgrade. > > 1. Please share with the list. Just because I answered your initial > question doesn't mean that I will answer the followup. And even if I do, > others may learn from the thread. I cc'd the list on this. Please do so > on any follow-up. > > 2. Again, not necessarily. Compare *all* the information that show ver > gives you across all routers, and I'm pretty sure you will see different > ROM versions, or different IOS versions, or both, that explain the > slightly different messages that you see. > > 3. Is this your only cause for worry? Or are there other problems that > you think may be linked to this one? If so, what are they? > > > RamG > > > > R2501#show ver > > Cisco Internetwork Operating System Software > > IOS (tm) 2500 Software (C2500-JS-L), Version 12.2(1), RELEASE SOFTWARE > (fc2) > > Copyright (c) 1986-2001 by cisco Systems, Inc. > > Compiled Fri 27-Apr-01 16:11 by cmong > > Image text-base: 0x03076B18, data-base: 0x1000 > > > > ROM: System Bootstrap, Version 11.0(10c)XB1, PLATFORM SPECIFIC RELEASE > > SOFTWARE (fc1) > > BOOTFLASH: 3000 Bootstrap Software (IGS-BOOT-R), Version 11.0(10c)XB1, > > PLATFORM SPECIFIC RELEA > > SE SOFTWARE (fc1) > > > > R2501 uptime is 1 hour, 41 minutes > > System returned to ROM by power-on > > System image file is "flash:c2500-js-l.122-1.bin" > > > > cisco 2500 (68030) processor (revision D) with 16384K/2048K bytes of > memory. > > Processor board ID 01560991, with hardware revision > > Bridging software. > > X.25 software, Version 3.0.0. > > SuperLAT software (copyright 1990 by Meridian Technology Corp). > > TN3270 Emulation software. > > 1 Ethernet/IEEE 802.3 interface(s) > > 2 Serial network interface(s) > > 32K bytes of non-volatile configuration memory. > > 16384K bytes of processor board System flash (Read ONLY) > > > > Configuration register is 0x2102 > > > > -Original Message- > > From: ElephantChild [mailto:[EMAIL PROTECTED]] > > Sent: Monday, May 28, 2001 8:49 AM > > To: RamG > > Cc: [EMAIL PROTECTED] > > Subject: Re: Curious Q [7:6114] > > > > > > On Mon, 28 May 2001, RamG wrote: > > > > > I have 5 routers. When I issue show ver each router returns different > > > output regarding how the router was started. Is something wrong? > > > > Not necessarily. It could be nothing more than a difference in ROM > > versions or IOS versions. Have you looked at the rest of what show ver > > tells you? > > > > > R2501 uptime is 23 minutes > > > System returned to ROM by power-on > > > System image file is "flash:c2500-js-l.122-1.bin" > > > > > > R2502 uptime is 26 minutes > > > System restarted by power-on > > > System image file is "flash:c2500-i-l.120-9.bin" > > > > > > R2503 uptime is 24 minutes > > > System returned to ROM by power-on > > > System image file is "flash:c2500-js-l.122-1.bin" > > > > > > R2504 uptime is 26 minutes > > > System restarted by power-on > > > System image file is "igs-ir-l.110-10.3", booted via flash > > > > > > 2511 uptime is 27 minutes > > > System restarted by power-on > > > System image file is "c2500-js-l.112-9.bin", booted via flash > > > > -- > > "Someone approached me and asked me to teach a javascript course. I was > > about to decline, saying that my complete ignorance of the subject made > > me unsuitable, then I thought again, that maybe it doesn't, as driving > > people away from it is a desirable outcome." --Me > > > > > > > > > -- > "Someone approached me and asked me to teach a javascript course. I was > about to decline, saying that my complete ignorance of the subject made > me unsuitable, then I thought again, that maybe it doesn't, as driving > people away from it is a desirable outcome." --Me > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6137&t=6114 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Lots of brodacast packets [7:6018]
Thanks for clearing broadcast issue, so I do need broadcast on Ethernet interface. I do get quite few input errors and everything is seems okay on the switch connected including duplex, speed settings so not sure why it's getting CRCs and input errors. For ping latency to ISDN sites issue, I gone through talking TAC and this newsgroup but no luck yet Cisco is offering new router but I do not think it's router. We have T1 going out to ISDN sites using Cisco 7505. weird thing is ping latency goes in circle meaning it's not only one site but to all sites one by one.. Thanks Inamul Here is sh int from router Serial2/1:23 is up, line protocol is up (spoofing) Hardware is cxBus T1 MTU 1500 bytes, BW 64 Kbit, DLY 2 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation PPP, loopback not set DTR is pulsed for 1 seconds on reset Last input 00:00:06, output 00:00:06, output hang never Last clearing of "show interface" counters 2d18h Queueing strategy: fifo Output queue 0/40, 0 drops; input queue 0/75, 0 drops 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 28070 packets input, 133292 bytes, 0 no buffer Received 0 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 28153 packets output, 194170 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets 0 output buffer failures, 0 output buffers swapped out 0 carrier transitions no alarm present Timeslot(s) Used:24, subrate: 64Kb/s, transmit delay is 0 flags Transmit queue length 23 FastEthernet3/0/0 is up, line protocol is up Hardware is cyBus FastEthernet Interface, address is 00e0.fea0.ec60 (bia 00e0. fea0.ec60) Internet address is 204.239.50.3/24 MTU 1500 bytes, BW 10 Kbit, DLY 100 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation ARPA, loopback not set Keepalive set (10 sec) Full-duplex, 100Mb/s, 100BaseTX/FX ARP type: ARPA, ARP Timeout 04:00:00 Last input 00:00:00, output 00:00:00, output hang never Last clearing of "show interface" counters 2d18h Queueing strategy: fifo Output queue 0/40, 0 drops; input queue 0/75, 492 drops 5 minute input rate 41000 bits/sec, 36 packets/sec 5 minute output rate 41000 bits/sec, 38 packets/sec 4679482 packets input, 878944627 bytes, 0 no buffer Received 425728 broadcasts, 0 runts, 0 giants, 34 throttles 1026 input errors, 1026 CRC, 0 frame, 0 overrun, 0 ignored 0 watchdog 0 input packets with dribble condition detected 5871168 packets output, 1153644205 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets --More-- -Original Message- From: Dennis R [mailto:[EMAIL PROTECTED]] Sent: Saturday, May 26, 2001 4:41 AM To: [EMAIL PROTECTED] Subject: Re: Lots of brodacast packets [7:6018] >I am getting lot of broadcast packets on FastEthernet interface when I >do >sh interface on cisco 7505. What does, "Lots," mean? Broadcasts are part of life in a network, cf. ARP, GNS, SAP, RIP updates, etc. >I also get "input errors" on that interface What percentage of your input packets is it? Are they collisions (normal in an unswitched environment), CRC's, or ?? You may want to check your cabling, and your speed/duplex settings if the router is plugged into a switch. >and big ping (up to 1200ms) latency to isdn sites. Could be caused by many, many things. It's unlikely this has anything to do with your ethernet interface. You might start by looking for overutilized circuits causing routers to drop packets from their output queues. >What to expect if I turn off these broadcasts? ARP won't work, therefore TCP/IP won't work. >Do I need receive broadcast packets on interface? Yes. HTH, doctorcisco _ Get your FREE download of MSN Explorer at http://explorer.msn.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6138&t=6018 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Question on the meaning of "tunneling" [7:6136]
In my opinion, a tunnel is when you take one packet and encapsulate it with an additional routing protocol header in order to pass it over a transit network transparently. So, DLSW uses tunnels, GRE tunnels are obviously tunnels, PIM register messages are tunnels, etc. That's just a brief definition but it works for me. At 01:19 PM 5/28/01, you wrote: >Question came up on the CCIE group revolving around the meaning of the term >"tunnel" > >I think I am seeing where the author of the below quote is going. I'm >wondering if one of the folks on this group might be willing to offer some >insight. > >The question originated with someone calling an OSPF virtual link a tunnel. >After some back and forth, someone offered the following (edited for >brevity, and clarity): > >"...understand the basics of software tunneling. TUNNELING PROVIDES >ALTERNATIVE TO THE NATIVE CONNECTIVITY PROCEDURE. In this case there is no >physical/datalink connectivity, so connectivity is achieved through software >interface. > >" Virtual Links are not tunnels, you can't transport traffic over them, they >just carry routing information. They are TUNNELING this routing information >through area 1. THIS IS THE PRINCIPLE OF TUNNELLING. IT IS NOT ONLY >APPLICATION DATA THAT IS TUNNELED : IN THIS CASE ROUTING UPDATES ARE BEING >TUNNELED! > >"you seem to know only Cisco exam material (tunnel interfaces) please read >further afield and grasp generics/basics of software programming principles, >" > >Can anyone offer further clarification here? > >Thanks > >Chuck > >One IOS to forward them all. >One IOS to find them. >One IOS to summarize them all >And in the routing table bind them. > >-JRR Chambers- >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6139&t=6136 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Remove me.... [7:6102]
Here's a hint on how to remove yourself. If you can bother sending an email every few days begging to be removed, you can take the time out and go to www.groupstudy.com and there's a box in the lower right hand corner of the screen. Type in your email address and click on the Unsubscribe radio button and then click on the Submit button. That's it. You're done. No more email messages. If you can't figure out how to do it please ask someone to help you. Thanks for listening. - Original Message - From: "babatope ojo" To: Sent: Monday, May 28, 2001 5:44 AM Subject: Remove me [7:6102] > Could you pls. remove my e-mail address from the list?.. > > Thanx. > > -- > babatope ojo > [EMAIL PROTECTED] - email > (202) 777-2641 ext. 8015 - voicemail/fax > > > > "Arun" wrote: > > Hi > > Thanks for the information ..i will try this when i find time cause > > the > > router is on live network i cann't do tthat they will kill me ..can > > u pls tell about > > I have 3600 router coonfigured as x25 i have 2 slots each having > > 4 > > serial interfaces in it ... > > i have to configure this with 2 serial ports on slot one for x25 > > encapsulation and on slot 2 i have to configure 2 serial ports which > > need to > > act as redundant in case there is problem with slot 1 ports .. > > i have ver 11.3 runing on it > > i added the entries like ... > > x25 route 010104 int ser 1/2 > > x25 route 010104 int ser 1/3 > > x25 route 010103 int ser 2/2 > > x25 route 010103 int ser 2/3 > > > > First thing will this do the job the machines on the other end has > > 2 serial > > port for each machine one is active and one is standy .machine > > switch > > over to standy if it sees error i link so i need to route the packets > > to > > this standby machine with interface ser 2/2 and ser 2/3 . > > > > Now i read somewhere like x25 retry command and backup interface command > > ... > > how can i use them can anybody send me the configuration and also will > > this > > work on ver 11.3 > > i tried it on ver11.3 but i think it doesn';t support it > > > > Pls suggest something . > > > > Regards > > Arun Sharma > > > > > > > > > > > > ""Bishara, Anan"" wrote in message > > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > > If u delete any subinterface u need to reboot the router to remove > > it. It > > > will stay in that case until u reboot the router. > > > Regards, > > > Anan > > > > > > -Original Message- > > > From: Arun [mailto:[EMAIL PROTECTED]] > > > Sent: Mon, May 28, 2001 10:41 AM > > > To: [EMAIL PROTECTED] > > > Subject: Re: Serial1/3.1 is deleted, line protocol is down [7:6090] > > > > > > > > > Hi > > > let me explain what i mean to ask > > > i try to configured a serial interface(sub interface) on ser1/3 i > > could > > n't > > > achieve what i was trying to do (i was trying to configure a backup > > > interface) so i removed the sub interface using > > > command > > > no int ser1/3.1 > > > but now even after removing the interface i see the following thing > > when i > > > use show int .. > > > i think it should not be there ...right or i am wrong > > > so why it still show this > > > Serial1/3.1 is deleted, line protocol is down > > > Hardware is M4T > > > MTU 1500 bytes, BW 1544 Kbit, DLY 2 usec, > > > reliability 255/255, txload 1/255, rxload 1/255 > > > Encapsulation X25 > > > Serial2/0 is down, line protocol is down > > > Hardware is M4T > > > Description: BGW 1.1 > > > MTU 1500 bytes, BW 1544 Kbit, DLY 2 usec, > > > reliability 255/255, txload 1/255, rxload 1/255 > > > Encapsulation X25, loopback not set > > > X.25 DCE, address , state R/Inactive, modulo 8, timer 0 > > > > > > > > > Regards > > > Arun Sharma > > > > > > > > > ""ElephantChild"" wrote in message > > > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > > > On Mon, 28 May 2001, Arun wrote: > > > > > > > > > Hi > > > > > i am getting this message when i run > > > > > show int command on 3600 series router with x25 on it > > > > > i tried configuring it but i removed whats wrong can u pls help > > > > > > > > If you didn't do so already, read what the cisco docs say on "show > > > > interface", then tell us what specific part you still don't understand, > > > > and what you think it could mean. Also tell us what other steps > > you took > > > > to answer your question, and how and why you think they failed. > > > > > > > > Or, if your question isn't "what does a deleted/down status mean?", > > > > you'll have to tell us what it is. > > > > > > > > > Regards > > > > > Arun Sharma > > > > > > > > > > Serial1/3.1 is deleted, line protocol is down > > > > > Hardware is M4T > > > > > MTU 1500 bytes, BW 1544 Kbit, DLY 2 usec, > > > > > reliability 255/255, txload 1/255, rxload 1/255 > > > > > Encapsulation X25 > > > > > Serial2/0 is down, line protocol is down > > > > > Hardware is M4T > > > > > Description: BGW 1.1 > > > > > MTU 1500 byte
RE: TR Int Errr [7:6112]
Newbie again, Because I know nothing about T-R, I'm trying to get more from this than you are, but doesn't beaconing means the ring is broken and it's trying to repair/reconfigure itself. Are you connected to a T-R net, or just trying to configure the router for T-R? When the Line protocol is down, aren’t the possible causes: that the encapsulation is not set correctly, keepalives are not getting through or that the other end is not up? I do see that the encap is Snap and the keepalives are at 10 so that leaves the other end or ??? Also, what does the rely set to 255/255 mean? Does it mean it will never transmit? Thanks for your patience, this is my last learning question. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6141&t=6112 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Serial1/3.1 is deleted, line protocol is down [7:6090]
Deleting subinterfaces often requires a 'reload' for them to disappear. Greetings Reinhold On Mon, 28 May 2001, Arun wrote: > Hi > let me explain what i mean to ask > i try to configured a serial interface(sub interface) on ser1/3 i could n't > achieve what i was trying to do (i was trying to configure a backup > interface) so i removed the sub interface using > command > no int ser1/3.1 > but now even after removing the interface i see the following thing when i > use show int .. > i think it should not be there ...right or i am wrong > so why it still show this > Serial1/3.1 is deleted, line protocol is down > Hardware is M4T > MTU 1500 bytes, BW 1544 Kbit, DLY 2 usec, > reliability 255/255, txload 1/255, rxload 1/255 > Encapsulation X25 > Serial2/0 is down, line protocol is down > Hardware is M4T > Description: BGW 1.1 > MTU 1500 bytes, BW 1544 Kbit, DLY 2 usec, > reliability 255/255, txload 1/255, rxload 1/255 > Encapsulation X25, loopback not set > X.25 DCE, address , state R/Inactive, modulo 8, timer 0 > > > Regards > Arun Sharma > > > ""ElephantChild"" wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > On Mon, 28 May 2001, Arun wrote: > > > > > Hi > > > i am getting this message when i run > > > show int command on 3600 series router with x25 on it > > > i tried configuring it but i removed whats wrong can u pls help > > > > If you didn't do so already, read what the cisco docs say on "show > > interface", then tell us what specific part you still don't understand, > > and what you think it could mean. Also tell us what other steps you took > > to answer your question, and how and why you think they failed. > > > > Or, if your question isn't "what does a deleted/down status mean?", > > you'll have to tell us what it is. > > > > > Regards > > > Arun Sharma > > > > > > Serial1/3.1 is deleted, line protocol is down > > > Hardware is M4T > > > MTU 1500 bytes, BW 1544 Kbit, DLY 2 usec, > > > reliability 255/255, txload 1/255, rxload 1/255 > > > Encapsulation X25 > > > Serial2/0 is down, line protocol is down > > > Hardware is M4T > > > Description: BGW 1.1 > > > MTU 1500 bytes, BW 1544 Kbit, DLY 2 usec, > > > reliability 255/255, txload 1/255, rxload 1/255 > > > Encapsulation X25, loopback not set > > > X.25 DCE, address , state R/Inactive, modulo 8, timer 0 > > > Defaults: idle VC timeout 0 > > > cisco encapsulation > > > input/output window sizes 2/2, packet sizes 128/128 > > > Timers: T10 60 > > > > -- > > "Someone approached me and asked me to teach a javascript course. I was > > about to decline, saying that my complete ignorance of the subject made > > me unsuitable, then I thought again, that maybe it doesn't, as driving > > people away from it is a desirable outcome." --Me Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6142&t=6090 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: TR Int Errr [7:6112]
Hi RamG, tell us more about to what the Tokenring Interface is connected to. a MAU ? a TR-Switch ? Is the port you want to connect to and the cabling fine and does it support the configured 16MHz TokenRing ? Reinhold On Mon, 28 May 2001, RamG wrote: > Hello Gang - I am having problem bring up TR int. Following is the output. > > R2502#show interface tokenring0 > TokenRing0 is initializing, line protocol is down > Hardware is TMS380, address is .30ba.4a52 (bia .30ba.4a52) > MTU 4464 bytes, BW 16000 Kbit, DLY 630 usec, rely 255/255, load 1/255 > Encapsulation SNAP, loopback not set, keepalive set (10 sec) > ARP type: SNAP, ARP Timeout 04:00:00 > Ring speed: 16 Mbps > Duplex: half > Mode: Classic token ring station > Group Address: 0x, Functional Address: 0x0800 > Ethernet Transit OUI: 0x00 > Last input never, output never, output hang never > Last clearing of "show interface" counters never > Queueing strategy: fifo > Output queue 0/40, 0 drops; input queue 0/75, 0 drops > 5 minute input rate 0 bits/sec, 0 packets/sec > 5 minute output rate 0 bits/sec, 0 packets/sec > 0 packets input, 0 bytes, 0 no buffer > Received 0 broadcasts, 0 runts, 0 giants, 0 throttles > 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort > 0 packets output, 0 bytes, 0 underruns > 0 output errors, 0 collisions, 54 interface resets > 0 output buffer failures, 0 output buffers swapped out > 59 transitions > > R2502#show config > Using 774 out of 32762 bytes > ! > version 12.0 > service timestamps debug uptime > service timestamps log uptime > no service password-encryption > service udp-small-servers > service tcp-small-servers > ! > hostname R2502 > ! > no logging console > enable password ram > ! > ip subnet-zero > no ip domain-lookup > ! > ! > ! > interface Serial0 > bandwidth 64 > no ip address > no ip directed-broadcast > encapsulation ppp > no ip route-cache > no ip mroute-cache > ! > interface Serial1 > bandwidth 64 > ip address 10.1.5.1 255.255.255.0 > no ip directed-broadcast > encapsulation ppp > no ip route-cache > no ip mroute-cache > ! > interface TokenRing0 > no ip address > no ip directed-broadcast > no ip route-cache > no ip mroute-cache > ring-speed 16 > ! > ip classless > ! > ! > line con 0 > transport input none > line aux 0 > transport input all > line vty 0 4 > login > ! > end > > Thanks / RamG > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6143&t=6112 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: What do "interVLAN routing "and" Layer 3 switching " mean [7:6144]
Rik, Ek! Yep I went off on one there. Mouth into overdrive - brain in neutral. I love that embarrassing feeling when you've lost the plot and not realised until it's public viewing material. I think users of a certain age should be provided with a "Delete my drivel" facility, to compensate for senility. Cheers, Gaz ""Rik Guyler"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > I think that what you have described is "multi-layer" switching. > > As Howard has mentioned in past posts, L3S is simply a marketing term as is > wire-speed switching. Layer 3 Switching is simply a line card, typically in > a chassis-based system, that can make routing decisions (layer 3) using > hardware-based technology (layer 2). By not relying on the fundamentally > slow software decision making, this process greatly enhances the speed at > which the decisions are made. > > There are other types of L3S devices, such as a 2948G-L3. This switch uses > ASICs to make routing decisions within hardware. When you purchase one of > these beasts, you basically have a 48-port gigabit router! > > Inter-VLAN routing is just routing. Basically, it can be performed with any > routing-capable device so long as you have the appropriate interfaces. The > difference between Inter-VLAn routing and legacy routing really has nothing > to do with routing at all. The real difference is how the LANs have been > broken out: either Layer 2 (VLANs) or Layer 3 (IP subnetting). > > If you know something about routing, then you know something about > Inter-VLAN routing. Read up on VLANs (I suggest the Kenndy Clark CCIE > switching book) and all will become clear. > > Rik > > -Original Message- > From: Gareth Hinton [mailto:[EMAIL PROTECTED]] > Sent: Monday, May 28, 2001 6:09 AM > To: [EMAIL PROTECTED] > Subject: Re: What do "interVLAN routing "and" Layer 3 switching " mean > [7:6104] > > > Hi Frank, > > I think the best description for Layer 3 Switching is "Route once - Switch > many". > The first time a packet in a particular "flow" passes through, a routing > function will be used (on a different card, or even in a different device). > But to speed up the processing of any further packets in that flow, a cache > is created in the switch to remember this flow. The next time a packet comes > through which matches this flow it will be switched without using the router > functionality, therefore speeding things up. > The definition of a flow can differ depending on configuration. For > instance, normally a flow may be any packet to a particular destination, but > if , for example, an extended access list is configured, the criteria for > the flow may tighten up i.e. to be considered part of a flow, the source and > destination are compared. > Inter-VLAN routing means a packet gets routed every time. > > Regards, > > Gaz > > > > > ""frank"" wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > What does the following mean ?it's cut from a description of WS-X4232-L3 > on > > cisco website. > > > > > > The Catalyst 4003 and 4006 Layer 3 Services module provides interVLAN > > routing for the Catalyst 4000 family switch and provides Layer 3 switching > > between the Gigabit Ethernet interfaces. > > > > "John Hardman" wrote in message > > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > > Hi > > > > > > OK I'll bite... > > > > > > Yes there is a difference. It gets a little convoluted, but there is a > > > difference. > > > > > > L3 switching: Think of a L3 switch as a multi port router that operates > at > > > wire speed. The 2948G-L3 is an example. It is just a 50 port Ethernet > > > router. So L3 switching is routing traffic at wire speeds. You could use > > one > > > of these to route between VLANs, or route between networks. > > > > > > Inter-VLAN routing: This is a technique, technology that is only used to > > > route traffic from one VLAN to other VLAN(s). It generally takes place > at > > > wire speeds inside a Cat switch with a L3 switch option, but is often > see > > > with routers that do not work at wire speeds. > > > > > > So the bottom line... think of a L3 switch as a device, and Inter-VLAN > > > routing as a technology. > > > > > > HTH > > > -- > > > John Hardman CCNP MCSE > > > > > > > > > ""frank"" wrote in message > > > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > > > Any difference? > > > > > > > > "frank" wrote in message > > > > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > > > > Thanks, > > > > > > > > > > > > > > > Frank > > > > > FAQ, list archives, and subscription info: > > > > http://www.groupstudy.com/list/cisco.html > > > > > Report misconduct and Nondisclosure violations to > [EMAIL PROTECTED] > > > > FAQ, list archives, and subscription info: > > > http://www.groupstudy.com/list/cisco.html > > > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > > FAQ, list archives, and subscription info: > > http://www.groupstudy.com/list/cisco.html
Re: trunking [7:6123]
I actually did this a few months back and it worked fine... although you will get speed and duplex errors on the 6500 even if they're manually set (at least with the Cabletron 9000 series switch). It didn't have any ill results so no big deal. Jeff ""SH Wesson"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > My environment is currently running Cabletron equipment that has trunking > set to 802.1q. I'm putting in a new Catalyst 6500 switch and will be tieing > that into the Cabletron network. My question is, since I'm not going to > trunk between the two but just to have a cross connect to communicate > between the two networks, should I be using ISL trunking on the Cisco switch > or should I be using 802.1q so that it is compatible with the Cabletron > network. In addition, if I do use 802.1q trunking, will that mess up the > Cabltron side. Thanks. > > > _ > Get your FREE download of MSN Explorer at http://explorer.msn.com > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6145&t=6123 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: trunking [7:6123]
You mention in your post that you will not be running trunks between the two boxes. If that's the case, there is no need to go with 802.1q for the 6500. There was a thread a week or so ago which discussed the pro's and cons of ISL and 802.1q. I think the main one for ISL was per VLAN spanning tree. I think the main ones for 802.1q are much less overheads, and an open standard. Regards, Gaz ""Peter I. Slow"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > If the cabletron thing is compliant with the IEEE spec, which only specifies > one instance of STP on a trunk, you will need to configure (or just be > aware) of PVST+'s existence. > > > > - Original Message - > From: "Daniel Cotts" > To: > Sent: Monday, May 28, 2001 1:30 PM > Subject: RE: trunking [7:6123] > > > > ISL is Cisco proprietary. 802.1Q is an open standard so that would be the > > way to connect the boxes. Check out "Cisco LAN Switching" by Clark and > > Hamilton. > > > > > -Original Message- > > > From: SH Wesson [mailto:[EMAIL PROTECTED]] > > > Sent: Monday, May 28, 2001 12:03 PM > > > To: [EMAIL PROTECTED] > > > Subject: trunking [7:6123] > > > > > > > > > My environment is currently running Cabletron equipment that > > > has trunking > > > set to 802.1q. I'm putting in a new Catalyst 6500 switch and > > > will be tieing > > > that into the Cabletron network. My question is, since I'm > > > not going to > > > trunk between the two but just to have a cross connect to communicate > > > between the two networks, should I be using ISL trunking on > > > the Cisco switch > > > or should I be using 802.1q so that it is compatible with the > > > Cabletron > > > network. In addition, if I do use 802.1q trunking, will that > > > mess up the > > > Cabltron side. Thanks. > > > > > > > > > _ > > > Get your FREE download of MSN Explorer at http://explorer.msn.com > > > FAQ, list archives, and subscription info: > > > http://www.groupstudy.com/list/cisco.html > > > Report misconduct > > > and Nondisclosure violations to [EMAIL PROTECTED] > > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6146&t=6123 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Tunneling [7:5945]
Hi again, The tunnel was not working because our ISP have some filters in their routers to deny valid IP addresses to across that link. And our tunnel source/destination addresses were valid IPs (serial0 addresses on both routers). Then, I've changed the src/dest to our local subnet (ethernet0 addresses on both routers), and got it working! Thanks you all. Regards, Eduardo - Original Message - From: "ElephantChild" To: "Eduardo D Piovesam" Cc: Sent: Friday, May 25, 2001 5:34 PM Subject: Re: Tunneling [7:5945] > > My machine (on site A) is 200.200.62.70 / 255.255.255.240 with gateway > > 255.255.255.65. > > Do you mean 200.200.62.65 there? As stated here, A's default gateway > isn't on the same subnet as A. Won't work. > > > * site A: > > ip route 200.200.46.208 255.255.255.240 tunnel0 > > * Site B: > > ip route 200.200.62.64 255.255.255.240 tunnel0 > > Did you try > > ip route 200.200.46.208 255.255.255.240 192.168.1.2 > > and > > ip route 200.200.62.64 255.255.255.240 192.168.1.1 > > instead? > > Did you try using traceroute instead of ping to see where you get stuck? > Did you make sure that the tunnel interface is up and running on both > routers? Di you try pinging from router A (using extended ping and > different source interfaces) to see whether the problem was on the > router or the host? > > On Fri, 25 May 2001, Eduardo D Piovesam wrote: > > > Hello, > > > > First, apologies for this long mail. > > > > I'm beggining with "cisco routers", and my "first" problem is with tunnels. > > > > I'm trying to set up a tunnel between our two locations with no success. > > > > These sites are linkeds to a ISP backbone. > > > > The "transport/passenger" protocols are IP. The routers are Cisco 2501 IOS > > 12.0(6). > > > > Addresses: > > - Site A LAN address : 200.200.62.64 / 255.255.255.240 > > - Site B LAN address : 200.200.46.208 / 255.255.255.240 > > > > * site A: > > - > > interface Tunnel0 > > ip address 192.168.1.1 255.255.255.252 > > no ip directed-broadcast > > tunnel source XXX.YYY.230.234 -- serial0 > > tunnel destination XXX.YYY.49.238 -- serial0 on router on site B > > ! > > interface Ethernet0 > > ip address 200.200.62.65 255.255.255.248 > > no ip directed-broadcast > > no ip route-cache > > no ip mroute-cache > > ! > > interface Serial0 > > ip address XXX.YYY.230.234 255.255.255.252 > > no ip directed-broadcast > > encapsulation frame-relay > > no ip route-cache > > no ip mroute-cache > > no fair-queue > > ! > > ip classless > > ip route 0.0.0.0 0.0.0.0 XXX.YYY.230.233 -- serial port on ISP router > > ip route 200.200.46.208 255.255.255.240 tunnel0 > > ! > > - > > > > * Site B: > > - > > ! > > interface Tunnel0 > > ip address 192.168.1.2 255.255.255.252 > > no ip directed-broadcast > > tunnel source XXX.YYY.49.238-- serial0 > > tunnel destination XXX.YYY.230.234 -- serial0 on router on site A > > ! > > interface Ethernet0 > > ip address 200.200.46.209 255.255.255.248 > > no ip directed-broadcast > > no ip route-cache > > no ip mroute-cache > > ! > > interface Serial0 > > ip address XXX.YYY.49.238 255.255.255.252 > > no ip directed-broadcast > > encapsulation frame-relay > > no ip route-cache > > no ip mroute-cache > > ! > > ip classless > > ip route 0.0.0.0 0.0.0.0 XXX.YYY.49.237 -- serial port on ISP router > > ip route 200.200.62.64 255.255.255.240 tunnel0 > > ! > > - > > > > My machine (on site A) is 200.200.62.70 / 255.255.255.240 with gateway > > 255.255.255.65. > > > > If I try to ping 200.200.46.209 with the tunnel on routers, I get "Request > > timed out". If I remove the 2nd routes from both routers, I can ping > > 200.200.46.209... :( > > > > Where I wrong? > > > > Thank you for any hint, clue, help...anything. > > > > Regards, > > Eduardo > > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > > > > -- > "Someone approached me and asked me to teach a javascript course. I was > about to decline, saying that my complete ignorance of the subject made > me unsuitable, then I thought again, that maybe it doesn't, as driving > people away from it is a desirable outcome." --Me Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6147&t=5945 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: ISL and MTU [7:6059]
Well George, since nobody else answered, I'll help here. Your logic is a little backwards here. by lowering your MTU, you may remove the label of baby giants on some of your data (now maybe they'll be giants), but that is all. Actually, by doing this, you will cause (at least in theory) additional issues. ISL will actually add 30 bytes, so by moving the MTU DOWN 30, you are compounding the issue by now possibly having frames that are 60 bytes too big to be passed. If you are running ISL, I would bump the MTU up to 1548, not lower it. This way, if the interface "sees" what was formerly considered a "giant" frame (1518 byte frame + ISL), then it will still be allowed to be forwarded as it is now an acceptable sive based on your specified MTU of 1548. Think of it this way: MTU is an absolute value. This means that the interface will look at the entire frame size including the ISL portion, not just the original data only. Rik -Original Message- From: George Yiannibas [mailto:[EMAIL PROTECTED]] Sent: Sunday, May 27, 2001 6:05 AM To: [EMAIL PROTECTED] Subject: ISL and MTU [7:6059] Hi group I am currently studying for BCMSN 640-504 and I thought of this question: If you reduce MTU from the default 1518 byte size to 1488 you will not get baby giant frames if using ISL True or False ? This is not a question from any book or any exam and I had it since I was studying for CCNA. Any input is welcome. PS Thank you all in advance this is a great forum and I learn something new every day ! George Yiannibas MCSE CCNA FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6150&t=6059 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Does MPLS really live up to all its hype? [7:6151]
Mr. Berkowitz, please read this post and respond. Okay, I am going to run the risk of starting a religious war here. But I do have to ask, is MPLS really as great as people say? I know many people, on newsgroups and in real-life, champion MPLS as the perfect answer to the problems of the core Internet. Faster IP forwarding, traffic engineering, VPN capabilities, etc., it seems to have some powerful features.No doubt, this attitude is sparked by Juniper, which is using MPLS as a strategic weapon against Cisco, and since Juniper keeps eating Cisco's lunch, it stands to reason that MPLS has something to do with it. In fact, many network engineers treat MPLS as nothing less than the holy grail. But I wonder if the hype has begun to outstrip reality. For example, as a response to the LightReading test, Bill St. Arnaud of the Canadian carrier Canarie states "The MPLS [multiprotocol label switching] throughput results confirmed our suspicions that MPLS does not buy you much except a big management headache. True, the throughput is higher, but not significantly higher than IP forwarding" http://www.lightreading.com/document.asp?site=testing&doc_id=3909 And even the idea of higher throughput has been questioned by the mother of all networking, Radia Perlman: " Originally [MPLS] was designed to make it possible to build fast routers, but then, using techniques such as [trie searches, parallelism, K-ary searches] people built routers fast enough on native IP packets. So now MPLS is thought to be mostly a technique for classifying the type of packet for quality of service or for assigning routes for traffic engineering..." (Interconnections, 2nd Ed., p. 347-348). And I think we would all agree that anything Ms. Perlman says must be given serious weight. So I must ask, does MPLS really live up to all the hype? Is it really the greatest thing since sliced bread? How much of MPLS really is an improvement on today's network, and how much of it is just a bunch of (probably Juniper) marketing bullshi*? Has any company ever worked for a company that evaluated MPLS and then decided not to use it, and if so, what were the reasons? Thanx for all the non-flame responses Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6151&t=6151 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
After boot error [7:6152]
I continously get this error after booting (about every 60s) %Error opening tftp://255.255.255.255/network-confg (Timed out) %Error opening tftp://255.255.255.255/cisconet.cfg (Timed out) %Error opening tftp://255.255.255.255/2600router-confg (Timed out) %Error opening tftp://255.255.255.255/2600rout.cfg (Timed out) the hostname is 2600router. I have the config-register set to 0x2102 (default according to Cisco) and have the router set to boot from flash (yes there is an image there). What is causing this error? I would appreciate hints instead of an answer, as I am trying to learn more and moreThanks Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6152&t=6152 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: TR Int Errr [7:6112]
Is there anything else plugged into your MAU (a PC or anything)? TR doesn't want to come up if its the only device in the ring, since, well, you can't have a 1-station ring. :-) HTH, doctorcisco >From: "RamG" >Reply-To: "RamG" >To: [EMAIL PROTECTED] >Subject: TR Int Errr [7:6112] >Date: Mon, 28 May 2001 10:39:46 -0400 > >Hello Gang - I am having problem bring up TR int. Following is the output. > >R2502#show interface tokenring0 >TokenRing0 is initializing, line protocol is down > Hardware is TMS380, address is .30ba.4a52 (bia .30ba.4a52) > MTU 4464 bytes, BW 16000 Kbit, DLY 630 usec, rely 255/255, load 1/255 > Encapsulation SNAP, loopback not set, keepalive set (10 sec) > ARP type: SNAP, ARP Timeout 04:00:00 > Ring speed: 16 Mbps > Duplex: half > Mode: Classic token ring station > Group Address: 0x, Functional Address: 0x0800 > Ethernet Transit OUI: 0x00 > Last input never, output never, output hang never > Last clearing of "show interface" counters never > Queueing strategy: fifo > Output queue 0/40, 0 drops; input queue 0/75, 0 drops > 5 minute input rate 0 bits/sec, 0 packets/sec > 5 minute output rate 0 bits/sec, 0 packets/sec > 0 packets input, 0 bytes, 0 no buffer > Received 0 broadcasts, 0 runts, 0 giants, 0 throttles > 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort > 0 packets output, 0 bytes, 0 underruns > 0 output errors, 0 collisions, 54 interface resets > 0 output buffer failures, 0 output buffers swapped out > 59 transitions > >R2502#show config >Using 774 out of 32762 bytes >! >version 12.0 >service timestamps debug uptime >service timestamps log uptime >no service password-encryption >service udp-small-servers >service tcp-small-servers >! >hostname R2502 >! >no logging console >enable password ram >! >ip subnet-zero >no ip domain-lookup >! >! >! >interface Serial0 > bandwidth 64 > no ip address > no ip directed-broadcast > encapsulation ppp > no ip route-cache > no ip mroute-cache >! >interface Serial1 > bandwidth 64 > ip address 10.1.5.1 255.255.255.0 > no ip directed-broadcast > encapsulation ppp > no ip route-cache > no ip mroute-cache >! >interface TokenRing0 > no ip address > no ip directed-broadcast > no ip route-cache > no ip mroute-cache > ring-speed 16 >! >ip classless >! >! >line con 0 > transport input none >line aux 0 > transport input all >line vty 0 4 > login >! >end > >Thanks / RamG >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ Get your FREE download of MSN Explorer at http://explorer.msn.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6153&t=6112 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: After boot error [7:6152]
This question could almost become part of a FAQ, it is asked so often. Because it is asked so often it's hard to "hint". Lookup "service config" and then check your config.. from my router.. CR357136-C(config)#service ? compress-configCompress the configuration file config TFTP load config files decimal-ttyInterpret tty line numbers in decimal. :: snip :: timestamps Timestamp debug/log messages udp-small-servers Enable small UDP servers (e.g., ECHO) CR357136-C(config) Kevin Wigle - Original Message - From: "NetEng" To: Sent: Monday, 28 May, 2001 18:25 Subject: After boot error [7:6152] > I continously get this error after booting (about every 60s) > > %Error opening tftp://255.255.255.255/network-confg (Timed out) > %Error opening tftp://255.255.255.255/cisconet.cfg (Timed out) > %Error opening tftp://255.255.255.255/2600router-confg (Timed out) > %Error opening tftp://255.255.255.255/2600rout.cfg (Timed out) > > the hostname is 2600router. > I have the config-register set to 0x2102 (default according to Cisco) and > have the router set to boot from flash (yes there is an image there). What > is causing this error? I would appreciate hints instead of an answer, as I > am trying to learn more and moreThanks Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6154&t=6152 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Why use GRE Tunnels [7:6155]
Hi, Can anyone give me some reasons why anyone would want to or need to use GRE Tunnels Thanks Rashid Lohiya [EMAIL PROTECTED] 020 8509 2990 07785 362626 www.pioneer-computers.com London UK Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6155&t=6155 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: CCNP Books ? [7:6058]
I used the CCNP preparation library to study towards the CCNP. Each
book in this series maps very well to the exam outline. I also used
the vast library at cisco.com to solidify any doubts. Also, the boson
tests help keep my mind sharp as to all the "little" details that you
may get hit with while taking each exam. Do a search on bookpool.com
for this series as I found their prices to be much better than some of
the other vendors online. Hope this helped.
Tim
On 27 May 2001 04:08:36 -0400, [EMAIL PROTECTED] ("Taufik A Lubis")
wrote:
>I have a planning to prepare CCNP test (WAN Switching , Routing and
>
>etc) ... but i just know books from sybex does anybody know about the
>
>others books about CCNP material tests ? which one better ?
>
> Thanks for informations
Message Posted at:
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Re: Question on the meaning of "tunneling" [7:6136]
>Question came up on the CCIE group revolving around the meaning of the term "tunnel" > >I think I am seeing where the author of the below quote is going. I'm >wondering if one of the folks on this group might be willing to offer some >insight. > >The question originated with someone calling an OSPF virtual link a tunnel. >After some back and forth, someone offered the following (edited for >brevity, and clarity): > >"...understand the basics of software tunneling. TUNNELING PROVIDES >ALTERNATIVE TO THE NATIVE CONNECTIVITY PROCEDURE. In this case there is no >physical/datalink connectivity, so connectivity is achieved through software >interface. > >" Virtual Links are not tunnels, you can't transport traffic over them, they >just carry routing information. They are TUNNELING this routing information >through area 1. THIS IS THE PRINCIPLE OF TUNNELLING. IT IS NOT ONLY >APPLICATION DATA THAT IS TUNNELED : IN THIS CASE ROUTING UPDATES ARE BEING >TUNNELED! > >"you seem to know only Cisco exam material (tunnel interfaces) please read >further afield and grasp generics/basics of software programming principles, >" > >Can anyone offer further clarification here? In the most general sense, a tunnel is a means of taking a protocol data unit payload of OSI layer N of protocol family P1: (N,P1)-PDU, and transmitting it with a delivery header at layer M of protocol family P2. What is actually transmitted is, minimally, a (N,P1)-PDU encapsulated in a (M,P2)-PDU. There may be a "shim" between the end of the delivery header and the beginning of the payload header; there's no good OSIRM term for the shim. FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Does MPLS really live up to all its hype? [7:6151]
>Okay, I am going to run the risk of starting a religious war here. But I do >have to ask, is MPLS really as great as people say? Great for what purpose? One of the problems is lots of presentations, certainly the ones I've gotten unmodified from Cisco training (not engineering), emphasize the forwarding aspects of MPLS, without much discussion of LSP setup protocols (LDP, RSVP-TE, and CR-LDP, and I am _not_ going to touch that religious war), or the relationship of these path setup protocols to IP routing. MPLS complements IP routing. Neither replaces the other. There might have been some arguments in that area when (my mind blanks--they were acquired by Nokia) introduced the first label switching machines, but the hardware and algorithms have caught up. There's a huge amount of FUD here, just as there is with respect to the technically meaningless term "L3 switching". The main focus on basic MPLS these days is traffic engineering, VPNs, and the ability to simplify the network with stacked labels. I don't know anyone whose technical opinion I respect who would argue that it's significantly faster in the forwarding plane. Another motivation is GMPLS, which extends use of the MPLS setup protocols to other sub-IP transmission systems, including optical and TDM. I'd hardly argue that Juniper is beating Cisco in this area, since Cisco introduced RFC 2547 VPNs, which are dominating carrier VPNs. Nortel is also very aggressive in MPLS, especially the GMPLS extensions for optical network management. I await with interest what comes out of the newly chartered IETF PPVPN working group, to see if some of the alternative VPN strategies gain traction. 2547 works, but it isn't perfect, especially with its impact on BGP. A great audience comment at the Atlanta NANOG, with respect to 2547, was "if this is the answer...it must have been a pretty stupid question." Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6158&t=6151 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Passed CCIE Written [7:6113]
congrates dude!!! Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6159&t=6113 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Does MPLS really live up to all its hype? [7:6151]
""Howard C. Berkowitz"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... A great audience comment at the Atlanta NANOG, with > respect to 2547, was "if this is the answer...it must have been a > pretty stupid question." Howard, I remember you quoted this as a comment for virtual router design, which I think is more appropriate. KY Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6160&t=6151 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Does MPLS really live up to all its hype? [7:6151]
""NRF"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > And even the idea of higher throughput has been questioned by the mother of > all networking, Radia Perlman: > " Originally [MPLS] was designed to make it possible to build fast routers, > but then, using techniques such as [trie searches, parallelism, K-ary > searches] people built routers fast enough on native IP packets. So now > MPLS is thought to be mostly a technique for classifying the type of packet > for quality of service or for assigning routes for traffic engineering..." > (Interconnections, 2nd Ed., p. 347-348). And I think we would all agree > that anything Ms. Perlman says must be given serious weight. Her book was published on 01/2000, I would imagine the actual context must be written 6 month earlier than that date, so her comments on MPLS was almost two years old, we all know in our network world two years means what. Just read all those RFCs/Drafts since late 1999. I believe MPLS will play a key role in the optical world, such as DWDM. KY Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6161&t=6151 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Does MPLS really live up to all its hype? [7:6151]
So are you saying that what Radia wrote is outdated and that MPLS is indeed significantly faster than straight IP forwarding? Bill St. Arnaud and Howard Berkowitz would emphatically disagree with that, so could you point me to some evidence supporting this contention that MPLS is indeed much faster? Not trying to flame, just trying to learn. ""KY"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > ""NRF"" wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > > And even the idea of higher throughput has been questioned by the mother > of > > all networking, Radia Perlman: > > " Originally [MPLS] was designed to make it possible to build fast > routers, > > but then, using techniques such as [trie searches, parallelism, K-ary > > searches] people built routers fast enough on native IP packets. So now > > MPLS is thought to be mostly a technique for classifying the type of > packet > > for quality of service or for assigning routes for traffic engineering..." > > (Interconnections, 2nd Ed., p. 347-348). And I think we would all agree > > that anything Ms. Perlman says must be given serious weight. > > > Her book was published on 01/2000, I would imagine the actual context must > be written 6 month earlier than that date, so her comments on MPLS was > almost two years old, we all know in our network world two years means what. > Just read all those RFCs/Drafts since late 1999. > I believe MPLS will play a key role in the optical world, such as DWDM. > > KY > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6162&t=6151 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Help-Anybody has some recommendation for Anti-DDoS attack in [7:6163]
Dear Group, Security issues come over to me in a certain case of mine: how to prevent an ISP and IDC from being attacked by DDoS? ACL CAR in exit routers may be bringing some impack on performance? Firewall may be having some throughput problem? Any advice for this kind of issues,I am very appreciated. THANKS Dean Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6163&t=6163 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Passed CCIE Written [7:6113]
COngratulations! I am a Chinese network engineer and passed CCIE writen with a score 93 last month! Wish all of us have a good luck in LAB test! Sorry for my poor English . Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6164&t=6113 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: How do I change flash on 2500 to read-write from [7:6020]
It is very easy . Router(config)#config-register 0x2101 then reload this router, you will enter router(boot)# mode; Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6165&t=6020 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Question on the meaning of "tunneling" [7:6136]
"Howard C. Berkowitz" wrote: > > In the most general sense, a tunnel is a means of taking a protocol > data unit payload of OSI layer N of protocol family P1: (N,P1)-PDU, > and transmitting it with a delivery header at layer M of protocol > family P2. What is actually transmitted is, minimally, a (N,P1)-PDU > encapsulated in a (M,P2)-PDU. There may be a "shim" between the end > of the delivery header and the beginning of the payload header; > there's no good OSIRM term for the shim. In a slightly less mathematical explanation: Think about the encapsulation steps while traveling down the stack. Are one or more layers repeated? If so, then tunneling is involved. Yeah, that's simplistic. - Marty Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6166&t=6136 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Does MPLS really live up to all its hype? [7:6151]
>So are you saying that what Radia wrote is outdated and that MPLS is indeed >significantly faster than straight IP forwarding? Bill St. Arnaud and >Howard Berkowitz would emphatically disagree with that, so could you point >me to some evidence supporting this contention that MPLS is indeed much >faster? > >Not trying to flame, just trying to learn. You have to assess how important raw forwarding performance is, given some of the bandwidths in use or nearly in use. If you can use GMPLS to control 10 or 40 Gbps lambdas, or multiple lambdas on a fiber, you're not doing per-packet forwarding. One of the reasons that ATM and its cell tax are less important is that the queueing you might see at OC-3, which is alleviated by small cells, is lost in the noise at OC-192. Packet forwarding rates are one aspect of a network, but not the be-all end-all. Filtering is going to be done at label edge routers, and filtering and traffic classification aren't within the scope of MPLS. > > >""KY"" wrote in message >[EMAIL PROTECTED]">news:[EMAIL PROTECTED]... >> ""NRF"" wrote in message >> [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... >> >> > And even the idea of higher throughput has been questioned by the mother >> of >> > all networking, Radia Perlman: >> > " Originally [MPLS] was designed to make it possible to build fast >> routers, >> > but then, using techniques such as [trie searches, parallelism, K-ary >> > searches] people built routers fast enough on native IP packets. So now >> > MPLS is thought to be mostly a technique for classifying the type of >> packet >> > for quality of service or for assigning routes for traffic >engineering..." >> > (Interconnections, 2nd Ed., p. 347-348). And I think we would all agree >> > that anything Ms. Perlman says must be given serious weight. Very reasonable observations on her part. > > >> >> Her book was published on 01/2000, I would imagine the actual context must >> be written 6 month earlier than that date, so her comments on MPLS was >> almost two years old, we all know in our network world two years means >what. >> Just read all those RFCs/Drafts since late 1999. >> I believe MPLS will play a key role in the optical world, such as DWDM. >> > > KY Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6167&t=6151 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Does MPLS really live up to all its hype? [7:6151]
Hey Howard, sorry if my last few posts have been an imposition on you. When I said "please respond", what I should have said was that "I really hope you can respond", and I sincerely apologize for using improper tone of language. Thank you for your kick-ass responses. ""NRF"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > So are you saying that what Radia wrote is outdated and that MPLS is indeed > significantly faster than straight IP forwarding? Bill St. Arnaud and > Howard Berkowitz would emphatically disagree with that, so could you point > me to some evidence supporting this contention that MPLS is indeed much > faster? > > Not trying to flame, just trying to learn. > > > ""KY"" wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > ""NRF"" wrote in message > > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > > > > And even the idea of higher throughput has been questioned by the mother > > of > > > all networking, Radia Perlman: > > > " Originally [MPLS] was designed to make it possible to build fast > > routers, > > > but then, using techniques such as [trie searches, parallelism, K-ary > > > searches] people built routers fast enough on native IP packets. So now > > > MPLS is thought to be mostly a technique for classifying the type of > > packet > > > for quality of service or for assigning routes for traffic > engineering..." > > > (Interconnections, 2nd Ed., p. 347-348). And I think we would all agree > > > that anything Ms. Perlman says must be given serious weight. > > > > > > Her book was published on 01/2000, I would imagine the actual context must > > be written 6 month earlier than that date, so her comments on MPLS was > > almost two years old, we all know in our network world two years means > what. > > Just read all those RFCs/Drafts since late 1999. > > I believe MPLS will play a key role in the optical world, such as DWDM. > > > > KY > > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6168&t=6151 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Why use GRE Tunnels [7:6155]
1. Transport non-IP routable protocols over an IP backbone (Appletalk, IPX, DECnet) 2. Transport encrypted IP VPNs so they pass routing protocol 3. Reduce the diameter of an IP network by eliminating routing hops over the tunnel created -e- - Original Message - From: "Rashid Lohiya" To: Sent: Monday, May 28, 2001 4:47 PM Subject: Why use GRE Tunnels [7:6155] > Hi, > > Can anyone give me some reasons why anyone would want to or need to use GRE > Tunnels > > Thanks > > Rashid Lohiya > [EMAIL PROTECTED] > 020 8509 2990 > 07785 362626 > www.pioneer-computers.com > London UK > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6169&t=6155 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
PIX Box [7:6170]
Hello Group,
I bought a PIX box at an auction. I am not sure whether it was a good/bad
buy. (Paid $475 for it).
By comparing the front and rear view of the box to cisco website:
http://www.cisco.com/univercd/cc/td/doc/pcat/fw.htm
I have identified the box as a PIX Firewall 520.
The IOS on it is old (4.0.7)
My question: is it worth starting to learn firewall technology on the this
version of thesoftware (old)? Here is more info from the startup.
PIX Bios V2.7
Booting Floppy
...Execing flop
PIX Floppy loader version 1.12
Starting second stage loader.
..
PIX Floppy cloader version 1.1
Flash=i28F020
Reading floppy image...
Flash version 4.0.7, Floppy version 4.0.7
Do you want me to install floppy version onto flash? [n]
loading from flash...
8MB RAM
Flash=i28F020
Ethernet inside 16 = 3c590 MAC = 00:a0:24:96:1d:36 ports = aui,bnc,rj
Ethernet outside 13 = 3c590 MAC = 00:a0:24:96:1b:d2 ports = aui,bnc,rj
CA9568 Encryption @ 0x3a0
---
||||
||||
..:||:..:||:..
c i s c o S y s t e m s
Private Internet eXchange
---
PIX Firewall
PIX Version 4.0.7
Maximum Connections: 64
Copyright (c) 1996-1997 by Cisco Systems, Inc.
Restricted Rights Legend
Use, duplication, or disclosure by the Government is
subject to restrictions as set forth in subparagraph
(c) of the Commercial Computer Software - Restricted
Rights clause at FAR sec. 52.227-19 and subparagraph
(c) (1) (ii) of the Rights in Technical Data and Computer
Software clause at DFARS sec. 252.227-7013.
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, California 95134-1706
pixfirewall>
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=6170&t=6170
--
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Re: Does MPLS really live up to all its hype? [7:6151]
No. Ms.Radia's comments were absolutely correct at the time of her writing, she just could not say anything that had not happened while she wrote the book. Tag switching and other proprietary similar technologies, on which MPLS was built, were faster than IP switching when ip switching was way slower. When MPLS came out, the speed of ip switching was already greatly improved by new hardware. So MPLS's design and implementation not focus on beating ip switching on speed anymore. Traffic engineering, VPN(both cisco and juniper), integrating ip into ATM and DWDM are the arenas for MPLS, my opinion. KY ""NRF"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > So are you saying that what Radia wrote is outdated and that MPLS is indeed > significantly faster than straight IP forwarding? Bill St. Arnaud and > Howard Berkowitz would emphatically disagree with that, so could you point > me to some evidence supporting this contention that MPLS is indeed much > faster? > > Not trying to flame, just trying to learn. > > > ""KY"" wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > ""NRF"" wrote in message > > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > > > > And even the idea of higher throughput has been questioned by the mother > > of > > > all networking, Radia Perlman: > > > " Originally [MPLS] was designed to make it possible to build fast > > routers, > > > but then, using techniques such as [trie searches, parallelism, K-ary > > > searches] people built routers fast enough on native IP packets. So now > > > MPLS is thought to be mostly a technique for classifying the type of > > packet > > > for quality of service or for assigning routes for traffic > engineering..." > > > (Interconnections, 2nd Ed., p. 347-348). And I think we would all agree > > > that anything Ms. Perlman says must be given serious weight. > > > > > > Her book was published on 01/2000, I would imagine the actual context must > > be written 6 month earlier than that date, so her comments on MPLS was > > almost two years old, we all know in our network world two years means > what. > > Just read all those RFCs/Drafts since late 1999. > > I believe MPLS will play a key role in the optical world, such as DWDM. > > > > KY > > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6171&t=6151 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Question on the meaning of "tunneling" [7:6136]
Tunneling, in general, is taking data (whether user data, routing information, etc), encapsulating it in another protocol for travel (i.e. TCP/IP), and sending it to a destination where the other end unwraps the encapsulation and then uses the data (whether user data, routing information, etc). DONE! It's obvious that the quotes below are written specifically talking about OSPF Virtual Links, which basically is for routing formation only. However, DLSW tunnels, STUN and BSTUN tunnels simply take the SNA (or Sync or Bi-Sync serial) frames, encapsulate them in IP packets, route them through the internetwork, and then gets rid of the IP encapsulation and uses the SNA/Synch/Bi-Synch frames as they were transmitted from the original source. DLSW is a major tunneling system used to connect mainframes because you can stick a router on the token ring connected to each mainframe, and as long as there is an IP route between the 2 routers (and they know each others IP address), they establish a tunnel, and the two mainframes think they're directly connected (actually they think they're on rings that are connected). On another note, the statement that "there is no physical/datalink" connectivity, although true, is kinda misleading. In the case of DLSW tunnels, the routers on either end of the tunnel use TCP to provide reliable transport of the SNA traffic, and then use Local Acknowledgement to each of the mainframes, thus providing "virtual" datalink connectivity. As far as the mainframes are concerned, there IS a datalink connection. So, you must realize, in OSPF Virtual Links, the tunneling process only carries routing data, but other tunnels DO carry application data Mike W. "Chuck Larrieu" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Question came up on the CCIE group revolving around the meaning of the term > "tunnel" > > I think I am seeing where the author of the below quote is going. I'm > wondering if one of the folks on this group might be willing to offer some > insight. > > The question originated with someone calling an OSPF virtual link a tunnel. > After some back and forth, someone offered the following (edited for > brevity, and clarity): > > "...understand the basics of software tunneling. TUNNELING PROVIDES > ALTERNATIVE TO THE NATIVE CONNECTIVITY PROCEDURE. In this case there is no > physical/datalink connectivity, so connectivity is achieved through software > interface. > > " Virtual Links are not tunnels, you can't transport traffic over them, they > just carry routing information. They are TUNNELING this routing information > through area 1. THIS IS THE PRINCIPLE OF TUNNELLING. IT IS NOT ONLY > APPLICATION DATA THAT IS TUNNELED : IN THIS CASE ROUTING UPDATES ARE BEING > TUNNELED! > > "you seem to know only Cisco exam material (tunnel interfaces) please read > further afield and grasp generics/basics of software programming principles, > " > > Can anyone offer further clarification here? > > Thanks > > Chuck > > One IOS to forward them all. > One IOS to find them. > One IOS to summarize them all > And in the routing table bind them. > > -JRR Chambers- > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6172&t=6136 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: trunking [7:6123]
Ya know. that really sux that Cisco would abandon ISL. Not because it's "the best" but alot of people have built networks that utilize ISL because it is better than Dot1Q, and not giving those people a graceful way to change is really low down. That's what happens when you trust proprietary Cisco standards, EVEN IF they're "better"... Hope they don't drop support for HSRP... "Rik Guyler" wrote in message news:[EMAIL PROTECTED]... > Hmmm...if you're not going to trunk VLANs between the 2, why setup trunking > at all? By adding the trunking, you will incur additional overhead that's > just not necessary unless needed. > > ISL is Cisco proprietary. However, they have tweaked Dot1Q and are now > moving away from ISL. Some of the newer boxes (Cat 4K for instance) don't > support ISL with the latest CatOS. > > If you do have to setup trunking, I would use Dot1Q. I don't know what you > mean by a "cross connect to communicate between the two networks". Do you > have seperate VLANs or Layer 3 subnets in place? If so, then you will also > need some form of routing in place. Otherwise, I wouldn't setup any > trunking and just connect them! > > Rik > > -Original Message- > From: SH Wesson [mailto:[EMAIL PROTECTED]] > Sent: Monday, May 28, 2001 1:03 PM > To: [EMAIL PROTECTED] > Subject: trunking [7:6123] > > > My environment is currently running Cabletron equipment that has trunking > set to 802.1q. I'm putting in a new Catalyst 6500 switch and will be tieing > > that into the Cabletron network. My question is, since I'm not going to > trunk between the two but just to have a cross connect to communicate > between the two networks, should I be using ISL trunking on the Cisco switch > > or should I be using 802.1q so that it is compatible with the Cabletron > network. In addition, if I do use 802.1q trunking, will that mess up the > Cabltron side. Thanks. > > > _ > Get your FREE download of MSN Explorer at http://explorer.msn.com > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6173&t=6123 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: PIX Box [7:6170]
I think that I was at the same auction. I was willing to go $200 for it . Absolutely start with it. It's a lot better than not having a firewall. Yes, the syntax of some commands have changed but the logic remains. In time you may be able to update the OS. > -Original Message- > From: Pierre-Alex GUANEL [mailto:[EMAIL PROTECTED]] > Sent: Monday, May 28, 2001 9:38 PM > To: [EMAIL PROTECTED] > Subject: PIX Box [7:6170] > > > Hello Group, > > I bought a PIX box at an auction. I am not sure whether it > was a good/bad > buy. (Paid $475 for it). > > By comparing the front and rear view of the box to cisco website: > http://www.cisco.com/univercd/cc/td/doc/pcat/fw.htm > I have identified the box as a PIX Firewall 520. > > The IOS on it is old (4.0.7) > > My question: is it worth starting to learn firewall > technology on the this > version of thesoftware (old)? Here is more info from the startup. > > > PIX Bios V2.7 > > Booting Floppy > > ...Execing flop > > > PIX Floppy loader version 1.12 > > Starting second stage loader. > .. > > PIX Floppy cloader version 1.1 > > Flash=i28F020 > Reading floppy image... > Flash version 4.0.7, Floppy version 4.0.7 > Do you want me to install floppy version onto flash? [n] > loading from flash... > 8MB RAM > Flash=i28F020 > Ethernet inside 16 = 3c590 MAC = 00:a0:24:96:1d:36 ports = aui,bnc,rj > Ethernet outside 13 = 3c590 MAC = 00:a0:24:96:1b:d2 ports = aui,bnc,rj > CA9568 Encryption @ 0x3a0 > > > -- > - >|||| >|||| > > ..:||:..:||:.. > c i s c o S y s t e m s > Private Internet eXchange > > -- > - >PIX Firewall > > PIX Version 4.0.7 > Maximum Connections: 64 > Copyright (c) 1996-1997 by Cisco Systems, Inc. > > Restricted Rights Legend > > Use, duplication, or disclosure by the Government is > subject to restrictions as set forth in subparagraph > (c) of the Commercial Computer Software - Restricted > Rights clause at FAR sec. 52.227-19 and subparagraph > (c) (1) (ii) of the Rights in Technical Data and Computer > Software clause at DFARS sec. 252.227-7013. > > Cisco Systems, Inc. > 170 West Tasman Drive > San Jose, California 95134-1706 > > pixfirewall> > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > Report misconduct > and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6174&t=6170 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
FW: Passed CCIE Written [7:6113]
Hai, Jiang, Congratulations! I have passed CCNP and now I'm going to take CCIE written, what is covered in the questions (BGP, VLAN, etc)? Is this same like CCNP questions or is it more complex? Thanks. -Original Message- From: Xinsheng Jiang [mailto:[EMAIL PROTECTED]] Sent: Tuesday, May 29, 2001 9:10 AM To: [EMAIL PROTECTED] Subject: RE: Passed CCIE Written [7:6113] COngratulations! I am a Chinese network engineer and passed CCIE writen with a score 93 last month! Wish all of us have a good luck in LAB test! Sorry for my poor English . FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6175&t=6113 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
10mbit full duplex? [7:6176]
(Trying yet again, this time from the web interface): I think my posts are being eaten (usually they show up right away), and perhaps Paul has a filter on the word "Test" (but I doubt it as there seems to be a number of those posts). Anyway, I was setting the 2610 back to half-duplex, then got distracted before I could set the Catalyst back (it was still on full-duplex) and received this error on the 2610 when I returned: May 28 20:18:46.243 PDT: %AMDP2_FE-5-LATECOLL: Ethernet0/0 transmit error Drawing from this, I'm guessing somehow the 2610 e0/0 was really running full-duplex before. Here's the original post (which doesn't look like it ever made it): Odd situation that I'm dinking around with in my lab (actually stalling from getting on with the real IDS lab I should be working on). 2610 router with a 10mbit ethernet port connected to a Catalyst 3524 10/100mbit port. I've configured both sides for 10mbit and full-duplex and brought them out of no shut mode at the same time, cleared counters, and then started up a 100K packets, 1450 bit size, 0 second timeout from another 10mbit router (1605R) also connected to the Catalyst (only running 10/half, though). With that ping session going, here are some of the results: Cat3524b_jroysdon# Cat3524b_jroysdon#sh int f0/22 FastEthernet0/22 is up, line protocol is up Hardware is Fast Ethernet, address is 0004.27dc.6196 (bia 0004.27dc.6196) Description: 2610 e0/0 MTU 1500 bytes, BW 1 Kbit, DLY 1000 usec, reliability 255/255, txload 66/255, rxload 66/255 Encapsulation ARPA, loopback not set Keepalive not set Full-duplex, 10Mb/s, 100BaseTX/FX ARP type: ARPA, ARP Timeout 04:00:00 Last input 00:00:08, output 00:00:00, output hang never Last clearing of "show interface" counters 00:04:32 Queueing strategy: fifo Output queue 0/40, 0 drops; input queue 0/75, 0 drops 30 second input rate 2622000 bits/sec, 225 packets/sec 30 second output rate 2623000 bits/sec, 226 packets/sec 29741 packets input, 43430219 bytes Received 93 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored 0 watchdog, 93 multicast 0 input packets with dribble condition detected 29771 packets output, 43454247 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets 0 babbles, 0 late collision, 0 deferred 0 lost carrier, 0 no carrier 0 output buffer failures, 0 output buffers swapped out Cat3524b_jroysdon#sh cdp neigh det - Device ID: c2610_jroysdon.internal.artoo.net Entry address(es): IP address: 192.168.45.252 Platform: cisco 2610, Capabilities: Router Interface: FastEthernet0/22, Port ID (outgoing port): Ethernet0/0 Holdtime : 161 sec Version : Cisco Internetwork Operating System Software IOS (tm) C2600 Software (C2600-JK9O3S-M), Version 12.2(1), RELEASE SOFTWARE (fc2) Copyright (c) 1986-2001 by cisco Systems, Inc. Compiled Fri 27-Apr-01 16:36 by cmong advertisement version: 2 Duplex: half Cat3524b_jroysdon# *Mar 3 00:24:20.250 PST: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on FastEthern et0/22 (not half duplex), with c2610_jroysdon.internal.artoo.net Ethernet0/0 (half duplex) / c2610_jroysdon#sh int e0/0 Ethernet0/0 is up, line protocol is up Hardware is AmdP2, address is 0003.e39b.5cc0 (bia 0003.e39b.5cc0) Internet address is 192.168.45.252/24 MTU 1500 bytes, BW 1 Kbit, DLY 1000 usec, reliability 255/255, txload 24/255, rxload 24/255 Encapsulation ARPA, loopback not set Keepalive set (10 sec) ARP type: ARPA, ARP Timeout 04:00:00 Last input 00:00:00, output 00:00:00, output hang never Last clearing of "show interface" counters 00:04:30 Queueing strategy: fifo Output queue 0/40, 0 drops; input queue 14/75, 0 drops 5 minute input rate 968000 bits/sec, 100 packets/sec 5 minute output rate 967000 bits/sec, 100 packets/sec 30061 packets input, 43689271 bytes, 0 no buffer Received 147 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored 0 input packets with dribble condition detected 29959 packets output, 43659032 bytes, 0 underruns(0/0/0) 0 output errors, 0 collisions, 0 interface resets 0 babbles, 0 late collision, 0 deferred 0 lost carrier, 0 no carrier 0 output buffer failures, 0 output buffers swapped out c2610_jroysdon# sh cdp neigh det - Device ID: Cat3524b_jroysdon.internal.artoo.net Entry address(es): IP address: 192.168.43.2 Platform: cisco WS-C3524-PWR-XL, Capabilities: Trans-Bridge Switch Interface: Ethernet0/0, Port ID (outgoing port): FastEthernet0/22 Holdtime : 143 sec Version : Cisco Internetwork Operating System Software IOS (tm) C3500XL Software (C3500XL-C3H2S-M), Version 12.0(5.2)XU, MAINTENANCE INTERIM SOFT WARE Copyright (c) 1986-2000 by cisco Systems, Inc. Compiled Mon 17-Jul-00 18:29
With a dialup setup, I can trace, but not ping, why's that? [7:6177]
I got this weird situation here: I got router A that dials into router B through an analog modem (async lines). On both routers A and B, I am using dialer profiles with rotary-groups. B is also connected to the Internet, through E0 (to a cable modem), and I have properly set up NAT, so that E0 is the outside interface and the dialer interface is the inside interface. A can properly dial into B with no problem. A has a static route pointing to its dialer interface. A does not have any other routes (all other interfaces have been shut, etc.) So basically, A has to dial to B to get anywhere. I have verified that dialing does indeed work properly. A cannot ping the outside world. For example, if I ping www.yahoo.com I get nothing. But here's the really weird part. Apparently, A can trace to www.yahoo.com, with no problem. I should also state that my dialer-list is this: dialer-list 1 protocol ip permit So, does anybody know why I can trace, but not ping? Is there something about Async interfaces or Dialer interfaces that causes thing weird behavior to happen? Check out this output: r1#trace www.yahoo.com Translating "www.yahoo.com"...domain server (128.32.136.12) [OK] Type escape sequence to abort. Tracing the route to www.yahoo.akadns.net (204.71.200.67) 1 50.50.50.50 40 msec 36 msec 36 msec 2 24.250.141.1 52 msec 48 msec 48 msec 3 r1-ge-3-0.pinol1.sfba.home.net (24.9.239.225) 52 msec 48 msec 52 msec 4 r1-dpt-srp-5-0.oakland1.sfba.home.net (216.197.144.148) 52 msec 52 msec 48 m sec 5 bb1-dpt-srp-1-0.rdc1.sfba.home.net (216.197.144.129) 56 msec 52 msec 53 msec 6 c2-pos5-1.snjsca1.home.net (24.7.76.181) 52 msec 52 msec 52 msec 7 pos6-3.core1.SanJose1.Level3.net (209.245.146.129) 64 msec 56 msec 52 msec 8 gigaethernet6-0.ipcolo1.SanJose1.Level3.net (209.244.13.42) 56 msec 56 msec 52 msec 9 POS11-0.ipcolo3.SanJose1.Level3.net (209.244.13.58) 52 msec 53 msec 52 msec 10 cust-int.level3.net (64.152.69.18) 56 msec 56 msec 56 msec 11 ge-1-2-0.msr2.pao.yahoo.com (216.115.100.154) 60 msec 52 msec 52 msec 12 vl21.bas2.snv.yahoo.com (216.115.100.229) 53 msec 56 msec 56 msec 13 www.yahoo.akadns.net (204.71.200.67) 52 msec 56 msec 52 msec r1#ping 204.71.200.67 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 204.71.200.67, timeout is 2 seconds: . Success rate is 0 percent (0/5) r1# Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6177&t=6177 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Why use GRE Tunnels [7:6155]
I have this configuration in production: branch office lan cisco 2611 Cisco 7206 running BGP Cisco 2611 branch office lan I have a /24 from one of my three BGP peers which is used for most everything in my network and there is a sloppy deploy of RFC1918 private addresses on two branch office segments. I knew I didn't want the 10.x.x.x/8 addresses leaking into my overall routing table and providing access from our colo sites into our corporate network. Our network is a star topology with the 7206 as its core so I could have done some fancy route filtering so only the three routers involved would see the private numbers OR used the VPN capability of the 2611s but I decided not to because: 1. complexity - there are two junior level people who work on our internetwork when I am not around - I judged the GRE tunnel to be much simpler to understand than some route filtering scheme 2. complexity - an IPsec VPN would have accomplished the same thing as the simple GRE tunnel but would have left the junior router gods scratching their heads if it had trouble while I was gone, to say nothing of the encryption tax on the link - there are some activities that light up the T1 for quite a while and a stand alone 26xx processor can't handle a full DS1 worth of encrypted traffic. 3. ease of maintenance - the GRE tunnels are tied to the loopback address on each router and we're running OSPF as our IGP. I make it a habit to tie VoIP, GRE tunnels, etc to the logical loopback - we did have a dual T1 configuration at one branch office for a while and it was nice to be able to change things and not worry about making sure the tunnel stuff was OK - it just automagically came right back in the event of a topology change (yes, I did the HSRP labs on a live network. So shoot me :-)) I've found many other uses for GRE tunnels ever since I discovered them - its so convenient if you're off site and want to do some work - rather than jacking up your access lists you just 'pipe' a little bit of your private address space to where ever you're at and you're working like you're in the office - think telecommuting in this case - pretty easy to move a little bit of 10.x.x.x/8 to my house and work from home when I needed. Yes, its somewhat insecure in that an @home guy could see stuff by snooping the GRE, but it would be darned hard to exploit unless he hijacked my public IPs at home. Rashid Lohiya wrote: > Hi, > > Can anyone give me some reasons why anyone would want to or need to use GRE > Tunnels > > Thanks > > Rashid Lohiya > [EMAIL PROTECTED] > 020 8509 2990 > 07785 362626 > www.pioneer-computers.com > London UK > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6178&t=6155 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Which Ethernet Frame Does Everyone Use [7:6179]
I am confused about which Ethernet frame type everyone uses with TCP/IP today. I understand that there are four different types. I see from the Cisco website that they talk about only two of these four. The two they discuss are called Ethernet and IEEE 802.3. The one Cisco calls Ethernet has the following fields Preamble Destination Address Source Address Type Data CRC The one Cisco calls IEEE 802.3 has Preamble Start Frame Delimiter Destination Address Source Address Length Data and 802.2 Header inside the data area as best I can tell CRC Why do they mention these two only? Who uses what? Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6179&t=6179 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Why use GRE Tunnels [7:6155]
GO TO SLEEP NEAL! - Original Message - From: "Neal Rauhauser" To: Sent: Tuesday, May 29, 2001 12:36 AM Subject: Re: Why use GRE Tunnels [7:6155] > I have this configuration in production: > > > branch office lan cisco 2611 Cisco 7206 running BGP Cisco 2611 branch > office lan > > > I have a /24 from one of my three BGP peers which is used for most > everything in my > network and there is a sloppy deploy of RFC1918 private addresses on two > branch office > segments. > > I knew I didn't want the 10.x.x.x/8 addresses leaking into my overall > routing table > and providing access from our colo sites into our corporate network. Our > network is a > star topology with the 7206 as its core so I could have done some fancy > route filtering > so only the three routers involved would see the private numbers OR used the > VPN > capability of the 2611s but I decided not to because: > > 1. complexity - there are two junior level people who work on our > internetwork when > I am not around - I judged the GRE tunnel to be much simpler to understand > than some > route filtering scheme > > 2. complexity - an IPsec VPN would have accomplished the same thing as the > simple GRE > tunnel but would have left the junior router gods scratching their heads if > it had > trouble while I was gone, to say nothing of the encryption tax on the link - > there are > some activities that light up the T1 for quite a while and a stand alone > 26xx processor > can't handle a full DS1 worth of encrypted traffic. > > 3. ease of maintenance - the GRE tunnels are tied to the loopback address on > each > router and we're running OSPF as our IGP. I make it a habit to tie VoIP, > GRE tunnels, > etc to the logical loopback - we did have a dual T1 configuration at one > branch office > for a while and it was nice to be able to change things and not worry about > making sure > the tunnel stuff was OK - it just automagically came right back in the event > of a > topology change (yes, I did the HSRP labs on a live network. So shoot me :-)) > > I've found many other uses for GRE tunnels ever since I discovered > them - its so > convenient if you're off site and want to do some work - rather than jacking > up your > access lists you just 'pipe' a little bit of your private address space to > where ever > you're at and you're working like you're in the office - think telecommuting > in this > case - pretty easy to move a little bit of 10.x.x.x/8 to my house and work > from home > when I needed. Yes, its somewhat insecure in that an @home guy could see > stuff by > snooping the GRE, but it would be darned hard to exploit unless he hijacked > my public > IPs at home. > > > > > > Rashid Lohiya wrote: > > > Hi, > > > > Can anyone give me some reasons why anyone would want to or need to use GRE > > Tunnels > > > > Thanks > > > > Rashid Lohiya > > [EMAIL PROTECTED] > > 020 8509 2990 > > 07785 362626 > > www.pioneer-computers.com > > London UK > > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6180&t=6155 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Question on the meaning of "tunneling" [7:6136]
Did some more research. In the context of the question, I went to the RFC to see what the source says. It occurred to me that the behaviour of virtual links must be defined in there somewhere. Sure enough, in the router LSA there is something called the V bit, which when set determines that the originator of the LSA is one endpoint of a virtual link. when two routers agree that they are the endpoints of the same virtual link, as determined by their RIDs as defined when the VL is configured, then the virtual link is established. "bit V When set, the router is an endpoint of one or more fully adjacent virtual links having the described area as Transit area (V is for virtual link endpoint)." In another place: " Virtual links are part of the backbone, and behave as if they were unnumbered point-to-point networks between the two routers. " I believe this lays to rest the question as to whether of not an OSPF virtual link is a tunnel. It is not. Chuck -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Marty Adkins Sent: Monday, May 28, 2001 7:24 PM To: [EMAIL PROTECTED] Subject:Re: Question on the meaning of "tunneling" [7:6136] "Howard C. Berkowitz" wrote: > > In the most general sense, a tunnel is a means of taking a protocol > data unit payload of OSI layer N of protocol family P1: (N,P1)-PDU, > and transmitting it with a delivery header at layer M of protocol > family P2. What is actually transmitted is, minimally, a (N,P1)-PDU > encapsulated in a (M,P2)-PDU. There may be a "shim" between the end > of the delivery header and the beginning of the payload header; > there's no good OSIRM term for the shim. In a slightly less mathematical explanation: Think about the encapsulation steps while traveling down the stack. Are one or more layers repeated? If so, then tunneling is involved. Yeah, that's simplistic. - Marty FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6181&t=6136 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Need help [7:6182]
Hi! to all, I passed my CCNA by 903 marks & preparing for ccnp ,kindly help me by from where to get the free stuff. mail at [EMAIL PROTECTED] more from the Web. FREE MSN Explorer download : http://explorer.msn.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6182&t=6182 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Question on the meaning of "tunneling" [7:6136]
" Virtual links are part of the backbone, and behave as if they were unnumbered point-to-point networks between the two routers. " its a virtual link. its an unnumbered network. a network/segmrnt nonetheless, and that description sounds like a tunnel. it's possible im reading it out of context and misunderstanding / me goes to grab his Doyle book ..Page 464, P1, "the VL is a tunnel through which packets may be routed on the optimal pathfrom one endpoint to the other." ...It would be unwise to tell god he is wrong. Doyle is the man who wrote the book, literally... - Original Message - From: "Chuck Larrieu" To: Sent: Tuesday, May 29, 2001 1:18 AM Subject: RE: Question on the meaning of "tunneling" [7:6136] > Did some more research. In the context of the question, I went to the RFC to > see what the source says. It occurred to me that the behaviour of virtual > links must be defined in there somewhere. > > Sure enough, in the router LSA there is something called the V bit, which > when set determines that the originator of the LSA is one endpoint of a > virtual link. when two routers agree that they are the endpoints of the same > virtual link, as determined by their RIDs as defined when the VL is > configured, then the virtual link is established. > > "bit V When set, the router is an endpoint of one or more fully adjacent > virtual links having the described area as Transit area (V is for virtual > link endpoint)." > > In another place: > > " Virtual links are part of the backbone, and behave as if they were > unnumbered point-to-point networks between the two routers. " > > I believe this lays to rest the question as to whether of not an OSPF > virtual link is a tunnel. It is not. > > Chuck > > > > -Original Message- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of > Marty Adkins > Sent: Monday, May 28, 2001 7:24 PM > To: [EMAIL PROTECTED] > Subject: Re: Question on the meaning of "tunneling" [7:6136] > > "Howard C. Berkowitz" wrote: > > > > In the most general sense, a tunnel is a means of taking a protocol > > data unit payload of OSI layer N of protocol family P1: (N,P1)-PDU, > > and transmitting it with a delivery header at layer M of protocol > > family P2. What is actually transmitted is, minimally, a (N,P1)-PDU > > encapsulated in a (M,P2)-PDU. There may be a "shim" between the end > > of the delivery header and the beginning of the payload header; > > there's no good OSIRM term for the shim. > > In a slightly less mathematical explanation: > Think about the encapsulation steps while traveling down the stack. > Are one or more layers repeated? If so, then tunneling is involved. > Yeah, that's simplistic. > > - Marty > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6183&t=6136 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Question on the meaning of "tunneling" [7:6136]
My quote was from the RFC, which I believe is the authoritative source. All that happens is that a particular bit in the router LSA is set, and when the two end points agree, based on the V-bit setting and the respective RID's, the virtual link is established. Jeff Doyle puts his pants on the same way you and I do. I'm sure he's made a mistake or two in his life. There are a few pages of errata to be found for his book. :-> Chuck -Original Message- From: Peter I. Slow [mailto:[EMAIL PROTECTED]] Sent: Monday, May 28, 2001 10:52 PM To: Chuck Larrieu; [EMAIL PROTECTED] Subject:Re: Question on the meaning of "tunneling" [7:6136] " Virtual links are part of the backbone, and behave as if they were unnumbered point-to-point networks between the two routers. " its a virtual link. its an unnumbered network. a network/segmrnt nonetheless, and that description sounds like a tunnel. it's possible im reading it out of context and misunderstanding / me goes to grab his Doyle book ..Page 464, P1, "the VL is a tunnel through which packets may be routed on the optimal pathfrom one endpoint to the other." ...It would be unwise to tell god he is wrong. Doyle is the man who wrote the book, literally... - Original Message - From: "Chuck Larrieu" To: Sent: Tuesday, May 29, 2001 1:18 AM Subject: RE: Question on the meaning of "tunneling" [7:6136] > Did some more research. In the context of the question, I went to the RFC to > see what the source says. It occurred to me that the behaviour of virtual > links must be defined in there somewhere. > > Sure enough, in the router LSA there is something called the V bit, which > when set determines that the originator of the LSA is one endpoint of a > virtual link. when two routers agree that they are the endpoints of the same > virtual link, as determined by their RIDs as defined when the VL is > configured, then the virtual link is established. > > "bit V When set, the router is an endpoint of one or more fully adjacent > virtual links having the described area as Transit area (V is for virtual > link endpoint)." > > In another place: > > " Virtual links are part of the backbone, and behave as if they were > unnumbered point-to-point networks between the two routers. " > > I believe this lays to rest the question as to whether of not an OSPF > virtual link is a tunnel. It is not. > > Chuck > > > > -Original Message- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of > Marty Adkins > Sent: Monday, May 28, 2001 7:24 PM > To: [EMAIL PROTECTED] > Subject: Re: Question on the meaning of "tunneling" [7:6136] > > "Howard C. Berkowitz" wrote: > > > > In the most general sense, a tunnel is a means of taking a protocol > > data unit payload of OSI layer N of protocol family P1: (N,P1)-PDU, > > and transmitting it with a delivery header at layer M of protocol > > family P2. What is actually transmitted is, minimally, a (N,P1)-PDU > > encapsulated in a (M,P2)-PDU. There may be a "shim" between the end > > of the delivery header and the beginning of the payload header; > > there's no good OSIRM term for the shim. > > In a slightly less mathematical explanation: > Think about the encapsulation steps while traveling down the stack. > Are one or more layers repeated? If so, then tunneling is involved. > Yeah, that's simplistic. > > - Marty > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6184&t=6136 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Need help [7:6182]
Lots of free stuff at www.cisco.com Check out the command references and configuration guides. Great place to start. Chuck -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of vijay tyagi Sent: Monday, May 28, 2001 10:55 PM To: [EMAIL PROTECTED] Subject:Need help [7:6182] Hi! to all, I passed my CCNA by 903 marks & preparing for ccnp ,kindly help me by from where to get the free stuff. mail at [EMAIL PROTECTED] more from the Web. FREE MSN Explorer download : http://explorer.msn.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6185&t=6182 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Question on the meaning of "tunneling" [7:6136]
ok. well my own personal idea of a tunnel is a thing that ecapsulates traffic to make it transparent to the underlying network, or vice-versa... the VL does not meet my own definition, but it is an alternate path that the traffic can take. In reality, the traffic is ROUTED along the path that you need to take to get to the opposite endpoint. I am putting one of these dumb things together to see how it really functions. ...am i correct? - Original Message - From: "Chuck Larrieu" To: "Peter I. Slow" ; Sent: Tuesday, May 29, 2001 1:54 AM Subject: RE: Question on the meaning of "tunneling" [7:6136] > My quote was from the RFC, which I believe is the authoritative source. > > All that happens is that a particular bit in the router LSA is set, and > when the two end points agree, based on the V-bit setting and the respective > RID's, the virtual link is established. > > Jeff Doyle puts his pants on the same way you and I do. I'm sure he's made a > mistake or two in his life. There are a few pages of errata to be found for > his book. :-> > > Chuck > > -Original Message- > From: Peter I. Slow [mailto:[EMAIL PROTECTED]] > Sent: Monday, May 28, 2001 10:52 PM > To: Chuck Larrieu; [EMAIL PROTECTED] > Subject: Re: Question on the meaning of "tunneling" [7:6136] > > " Virtual links are part of the backbone, and behave as if they were > unnumbered point-to-point networks between the two routers. " > its a virtual link. its an unnumbered network. a network/segmrnt > nonetheless, and that description sounds like a tunnel. > > it's possible im reading it out of context and misunderstanding > > / me goes to grab his Doyle book > > ..Page 464, P1, > "the VL is a tunnel through which packets may be routed on the optimal > pathfrom one endpoint to the other." > > ...It would be unwise to tell god he is wrong. > Doyle is the man who wrote the book, literally... > > - Original Message - > From: "Chuck Larrieu" > To: > Sent: Tuesday, May 29, 2001 1:18 AM > Subject: RE: Question on the meaning of "tunneling" [7:6136] > > > > Did some more research. In the context of the question, I went to the RFC > to > > see what the source says. It occurred to me that the behaviour of virtual > > links must be defined in there somewhere. > > > > Sure enough, in the router LSA there is something called the V bit, which > > when set determines that the originator of the LSA is one endpoint of a > > virtual link. when two routers agree that they are the endpoints of the > same > > virtual link, as determined by their RIDs as defined when the VL is > > configured, then the virtual link is established. > > > > "bit V When set, the router is an endpoint of one or more fully adjacent > > virtual links having the described area as Transit area (V is for virtual > > link endpoint)." > > > > In another place: > > > > " Virtual links are part of the backbone, and behave as if they were > > unnumbered point-to-point networks between the two routers. " > > > > I believe this lays to rest the question as to whether of not an OSPF > > virtual link is a tunnel. It is not. > > > > Chuck > > > > > > > > -Original Message- > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of > > Marty Adkins > > Sent: Monday, May 28, 2001 7:24 PM > > To: [EMAIL PROTECTED] > > Subject: Re: Question on the meaning of "tunneling" [7:6136] > > > > "Howard C. Berkowitz" wrote: > > > > > > In the most general sense, a tunnel is a means of taking a protocol > > > data unit payload of OSI layer N of protocol family P1: (N,P1)-PDU, > > > and transmitting it with a delivery header at layer M of protocol > > > family P2. What is actually transmitted is, minimally, a (N,P1)-PDU > > > encapsulated in a (M,P2)-PDU. There may be a "shim" between the end > > > of the delivery header and the beginning of the payload header; > > > there's no good OSIRM term for the shim. > > > > In a slightly less mathematical explanation: > > Think about the encapsulation steps while traveling down the stack. > > Are one or more layers repeated? If so, then tunneling is involved. > > Yeah, that's simplistic. > > > > - Marty > > FAQ, list archives, and subscription info: > > http://www.groupstudy.com/list/cisco.html > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6186&t=6136 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Ram in 2500 series [7:6187]
Newbie question, Re: 2500 series routers Is it true that any 72 pin DRAM Simm (eg.16mb) will work in these routers for the primary memory? Does it matter about the speed of the ram (60ns/70ns)? What is the largest size of ram that the router will take and still deliver a speed benefit? Assuming a current IOS is about 8 mb, how much more ram room do you need for routing tables, cache etc.? Does the amount of shared memory limit the speed of switching and is that upgradeable? Is this also true for the next level of routers, the 2600s? Thanks Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6187&t=6187 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Frame-Relay Switching command [7:6188]
hi all anyone knows why if a router needs to be configured with the frame-relay switching command even though it is not configured as a frame-relay switch? regards, suaveguru __ Do You Yahoo!? Yahoo! Auctions - buy the things you want at great prices http://auctions.yahoo.com/ Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6188&t=6188 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: DTE interface on Frame Relay switch [7:4256]
>From what I know you could configure BACK TO BACK FRAME-RELAY WITH two routers with LMI turn off regards, Jason Yee --- Fischer Reinhold wrote: > Hi Thomas, > > i think it is not possible what you are trying to > accomplish. > You need one Router with at least two serial > interfaces dedicated > as the frame relay switch. So you need at least 3 > Routers with > serial interfaces to practice frame relay. > > Others please correct me if there is a trick to do > it with two routers. > > Greetings > > Reinhold > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] __ Do You Yahoo!? Yahoo! Auctions - buy the things you want at great prices http://auctions.yahoo.com/ Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6189&t=4256 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: After boot error [7:6152]
On Mon, 28 May 2001, NetEng wrote: > I continously get this error after booting (about every 60s) > > %Error opening tftp://255.255.255.255/network-confg (Timed out) > %Error opening tftp://255.255.255.255/cisconet.cfg (Timed out) > %Error opening tftp://255.255.255.255/2600router-confg (Timed out) > %Error opening tftp://255.255.255.255/2600rout.cfg (Timed out) > > the hostname is 2600router. > I have the config-register set to 0x2102 (default according to Cisco) and > have the router set to boot from flash (yes there is an image there). What > is causing this error? I would appreciate hints instead of an answer, as I > am trying to learn more and moreThanks Others already answered your request, but I would like to offer congrats for asking not to be spoon-fed a solution. I wish more posters would do that. :-) -- "Someone approached me and asked me to teach a javascript course. I was about to decline, saying that my complete ignorance of the subject made me unsuitable, then I thought again, that maybe it doesn't, as driving people away from it is a desirable outcome." --Me Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6190&t=6152 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Help on Cisco 4000 Switch [7:6191]
Hi, My friend has a question on the Cisco 4000 switch, can anyone please help? Thanks in advance. == When a Cisco 1720 is hookup to the switch, if there is no traffice from the 1720, it will be disconnected from the Cisco catalyte 4000 switch after a preset 300 seconds. The mac-address of 1720 will be disappeared from the Cisco 4000 switch arp table. Is this OK to use "set arp static-address" to permantly write the 1720 mac-address and IP into the 4000 switch arp table? == Thanks, JC __ Do You Yahoo!? Yahoo! Auctions - buy the things you want at great prices http://auctions.yahoo.com/ Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6191&t=6191 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
