RE: What is meant in the Cat5k by interface sc0 [7:48375]
sc0 refers to the inband interface of a switch... -Original Message- From: John Brandis [mailto:[EMAIL PROTECTED]] Sent: 09 July 2002 07:35 To: [EMAIL PROTECTED] Subject: What is meant in the Cat5k by interface sc0 [7:48375] ** visit http://www.solution6.com visit http://www.eccountancy.com - everything for accountants. UK Customers - http://www.solution6.co.uk * This email message (and attachments) may contain information that is confidential to Solution 6. If you are not the intended recipient you cannot use, distribute or copy the message or attachments. In such a case, please notify the sender by return email immediately and erase all copies of the message and attachments. Opinions, conclusions and other information in this message and attachments that do not relate to the official business of Solution 6 are neither given nor endorsed by it. * Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48378t=48375 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: What is meant in the Cat5k by interface sc0 [7:48375]
SC0 is the management interface of the switch. It will participate on whatever VLAN you assign to it. Make sure, however, you add a default route. If you do not add the default route, no other devices, except the ones on the same subnet, will be able to reach it, that is as long as you don't put in static routes. Carl Timm, CCIE# 7149 Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48381t=48375 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Class C summarization question [7:48367]
For a Cisco test the actuall answer would be 14. Unfortunately, for us, they don't take subnet zero into consideration for tests. So, if you have that question on the test answer 14, for the real-world it's 16. In other words, the answer to the BSCN question is wrong. Carl Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48379t=48367 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: MAC address in router ARP table [7:48377]
Are you practicing in the lab? If so, just reboot the router. If not, let me know. Carl Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48380t=48377 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: What is meant in the Cat5k by interface sc0 [7:48375]
hi ref this site. it might be helpful to u in knowing the sc0 interface. http://www.cisco.com/univercd/cc/td/doc/product/lan/cat5000/rel_6_3/config/supcfg.htm#32032 regards deepak n achar wipro technologies bangalore Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48383t=48375 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: What is meant in the Cat5k by interface sc0 [7:48375]
either system console 0 or Switch console 0 interface. I am sure the experts here will be quick to slap me around if thats not the correct answer... Larry Letterman Cisco Systems [EMAIL PROTECTED] -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of John Brandis Sent: Monday, July 08, 2002 10:35 PM To: [EMAIL PROTECTED] Subject: What is meant in the Cat5k by interface sc0 [7:48375] ** visit http://www.solution6.com visit http://www.eccountancy.com - everything for accountants. UK Customers - http://www.solution6.co.uk * This email message (and attachments) may contain information that is confidential to Solution 6. If you are not the intended recipient you cannot use, distribute or copy the message or attachments. In such a case, please notify the sender by return email immediately and erase all copies of the message and attachments. Opinions, conclusions and other information in this message and attachments that do not relate to the official business of Solution 6 are neither given nor endorsed by it. * Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48384t=48375 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Remote Access 640-605 [7:48310]
It does. Carl Timm, CCIE# 7149 Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48386t=48310 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
AW: Mac Layer access list [7:48324]
Well I have never tried it but could one not just use an extended ACL 1100 to 1199? What is the 1100 to 1199 if not for the MAC? Or does this only work on switches? Here is one link from Cisco http://www.cisco.com/univercd/cc/td/doc/product/lan/cat6000/sw_5_5/cmd_refr/ setsn_su.htm#xtocid168376 This is for a switch but I am also interested in the answer. I would not mind being able to use a MAC access list on a cable modem we have to prevent people other than required from dialing in. Please let me know if you find the answer and I will keep looking. thanks stuart -Urspr|ngliche Nachricht- Von: Dennis Laganiere [mailto:[EMAIL PROTECTED]] Gesendet am: Monday, July 08, 2002 8:04 PM An: [EMAIL PROTECTED] Betreff: Mac Layer access list [7:48324] I looked through the CCO, the groupstudy archive and my stack of cisco press books, but I can't find any information about setting up an ACL for MAC addresses. Has anybody done it before? Here's what I'm trying to do: I've got a wireless access point that lets just anybody join. I want to put a router upstream to block all but a limited number of pre-defined MAC addresses. Any thoughts? Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48387t=48324 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: MAC address in router ARP table [7:48377]
Is rebooting the only solution? I am thinking of any other possible method... -Original Message- From: Carl Timm To: [EMAIL PROTECTED] Sent: 09/07/2002 2:13 PM Subject: RE: MAC address in router ARP table [7:48377] Are you practicing in the lab? If so, just reboot the router. If not, let me know. Carl Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48388t=48377 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Class C summarization question [7:48367]
I say 8. 2 to the power of 4 Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48389t=48367 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Certificationzone [7:48390]
Anyone knows what happens with them ? They no longer send their weekly e-mails nor do they reply to e-mails sent to them. Also their forum is closed. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48390t=48390 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Class C summarization question [7:48367]
Firstly, 2 to the power of 4 is 16 (2x2x2x2). Secondly, regarding Carl's post, would the answer be 14? I'm not sure the subnet-zero comes into play with CIDR. I was under the impression it was only relevant to subnetting as opposed to summarizing. Does anyone know for sure? I say 8. 2 to the power of 4 Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48393t=48367 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: MAC address in router ARP table [7:48377]
clear arp-cache Is rebooting the only solution? I am thinking of any other possible method... -Original Message- From: Carl Timm To: [EMAIL PROTECTED] Sent: 09/07/2002 2:13 PM Subject: RE: MAC address in router ARP table [7:48377] Are you practicing in the lab? If so, just reboot the router. If not, let me know. Carl Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48394t=48377 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Multicasting Examples [7:48395]
Hi I want to work on IP Multicast in my home lab... Any idea on examples..to workout. Thanks and Regards Rob _ Chat with friends online, try MSN Messenger: http://messenger.msn.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48395t=48395 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Class C summarization question [7:48367]
Bob Timmons wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Secondly, regarding Carl's post, would the answer be 14? I'm not sure the subnet-zero comes into play with CIDR. I was under the impression it was only relevant to subnetting as opposed to summarizing. Does anyone know for sure? I agree. A /20 can summarize 16 - /24 networks. AFAIK this is separate from zero-subnets and subnetting. Mike W. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48396t=48367 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
interface traffic showing unreasonable statistics [7:48397]
Hi all, I am using a cisco router with a frac-E1 link terminated on it (256kbps). I am running some Ipsec tunnels across this link. Sometimes i have found that i/p o/p rate shows more then 256kbps using the show interface ser command. i have seen it upto 32 bps? Plz can somebody explain this? thanks /regards, Uday Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48397t=48397 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Class C summarization question [7:48367]
One of the choices in the question was 16but 14 was not a choice. Could it be that since 14 was not a choice that 8 was the closest thing since 16 is possibly wrong because of the 0 subnet? This seems a little off the wall to me butsometimes those cisco questions are off the wall. Dain. Bob Timmons wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Firstly, 2 to the power of 4 is 16 (2x2x2x2). Secondly, regarding Carl's post, would the answer be 14? I'm not sure the subnet-zero comes into play with CIDR. I was under the impression it was only relevant to subnetting as opposed to summarizing. Does anyone know for sure? I say 8. 2 to the power of 4 Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48398t=48367 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: MAC address in router ARP table [7:48377]
Lim, Two things regarding your post. 1. You can clear a single ARP CACHE entry using SNMP. Check this link... http://www.cisco.com/warp/public/477/SNMP/clear_arp.shtml 2. Clearing the ARP-CACHE or REBOOTING the router will NOT allow you to duplicate a used STATICALLY assigned IP address. I don't know the rest of your network topology, so I'm assuming the IP you want to use for another host is statically assigned to another host. Yes you'll have to hunt this host down wherever it is and change its IP or release its DHCP-assigned IP. HTH, Elmer -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Bob Timmons Sent: Tuesday, July 09, 2002 7:30 AM To: [EMAIL PROTECTED] Subject: Re: MAC address in router ARP table [7:48377] clear arp-cache Is rebooting the only solution? I am thinking of any other possible method... -Original Message- From: Carl Timm To: [EMAIL PROTECTED] Sent: 09/07/2002 2:13 PM Subject: RE: MAC address in router ARP table [7:48377] Are you practicing in the lab? If so, just reboot the router. If not, let me know. Carl Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48399t=48377 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: MAC address in router ARP table [7:48377]
Shot in the dark here. =) How about clear ip nat trans? Could you use that to clear the errant NAT entry to free up that IP address? Mike W. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48401t=48377 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Class C summarization question [7:48367]
Bob, I would have to agree. With CIDR, in most cases you will get 16 usable subnets and 2 unusable addresses (the network and the broadcast). ex. 192.168.96.0 255.255.240.0 192.168.96.1 -- 192.168.111.254 all usable 192.168.96.0 network 192.168.111.255 broadcast I could see the question possibly not wanting the zero subnet if you used the following: 192.168.0.0 -- 192.168.15.255 where the 192.168.0.X network might be classified as unusable. This would give you 15 usable subnets... Tim CCIE 9015 -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Bob Timmons Sent: Tuesday, July 09, 2002 7:28 AM To: [EMAIL PROTECTED] Subject: Re: Class C summarization question [7:48367] Firstly, 2 to the power of 4 is 16 (2x2x2x2). Secondly, regarding Carl's post, would the answer be 14? I'm not sure the subnet-zero comes into play with CIDR. I was under the impression it was only relevant to subnetting as opposed to summarizing. Does anyone know for sure? I say 8. 2 to the power of 4 Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48403t=48367 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Class C summarization question [7:48367]
If the choices are either 8 or 16, I'd definitely go with 16. 192.168.0.0/20 would be (for example): 192.168.0.1 to 192.168.15.254 Which is 16 total subnets. One of the choices in the question was 16but 14 was not a choice. Could it be that since 14 was not a choice that 8 was the closest thing since 16 is possibly wrong because of the 0 subnet? This seems a little off the wall to me butsometimes those cisco questions are off the wall. Dain. Bob Timmons wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Firstly, 2 to the power of 4 is 16 (2x2x2x2). Secondly, regarding Carl's post, would the answer be 14? I'm not sure the subnet-zero comes into play with CIDR. I was under the impression it was only relevant to subnetting as opposed to summarizing. Does anyone know for sure? I say 8. 2 to the power of 4 Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48404t=48367 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Class C summarization question [7:48367]
I was thinking of subnetting and not summarization, it was a little late. 16, not 14, is correct. Carl Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48405t=48367 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Class C summarization question [7:48367]
Dain Deutschman wrote: One of the choices in the question was 16but 14 was not a choice. Could it be that since 14 was not a choice that 8 was the closest thing since 16 is possibly wrong because of the 0 subnet? This seems a little off the wall to me butsometimes those cisco questions are off the wall. Dain. But couldn't you use that same logic and say 16 was the closest since 8 is wrong and 14 wasn't an answer? I still say 16 is the answer. Mike W. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48406t=48367 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
OT: HP Procurve, Cisco Routers [7:48408]
Hey all. Know that this is off topic but I wanted to throw it out there to see if anyone has had any feedback. Has anyone experienced any issues with HP ProCurve 4000M switches, running into a Cisco router (1720..etc.)? Any caveats? Im having a problem with one of our remote facilities and performance issues on the LAN. It appears to be related to the switches. But they are coming back through a 256K frame back to HQ. The thing is, from HQ to them fine, from them to HQ slow. REALLY SLOW. The frame is NOT utilized at all. Danka. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48408t=48408 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: HP Procurve, Cisco Routers [7:48408]
a) At HQ does your Frame connection aggregate PVCs from several spokes such that the total CIR of all the spokes greatly exceeds the capacity of the port? b) Have you checked the interface statictics for the router's connection to the switch? c) What about test transfers from PC to PC at the remote site OK/Not OK ? -Original Message- From: Richard Tufaro [mailto:[EMAIL PROTECTED]] Sent: Tuesday, July 09, 2002 9:39 AM To: [EMAIL PROTECTED] Subject: OT: HP Procurve, Cisco Routers [7:48408] Hey all. Know that this is off topic but I wanted to throw it out there to see if anyone has had any feedback. Has anyone experienced any issues with HP ProCurve 4000M switches, running into a Cisco router (1720..etc.)? Any caveats? Im having a problem with one of our remote facilities and performance issues on the LAN. It appears to be related to the switches. But they are coming back through a 256K frame back to HQ. The thing is, from HQ to them fine, from them to HQ slow. REALLY SLOW. The frame is NOT utilized at all. Danka. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48410t=48408 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: HP Procurve, Cisco Routers [7:48408]
Did you check duplex settings and interface errors on the switch? Run mrtg against it and see the bandwidth coming through the ports. I had the same HP switches at my last jobs without any real performance issues. Richard Tufaro wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Hey all. Know that this is off topic but I wanted to throw it out there to see if anyone has had any feedback. Has anyone experienced any issues with HP ProCurve 4000M switches, running into a Cisco router (1720..etc.)? Any caveats? Im having a problem with one of our remote facilities and performance issues on the LAN. It appears to be related to the switches. But they are coming back through a 256K frame back to HQ. The thing is, from HQ to them fine, from them to HQ slow. REALLY SLOW. The frame is NOT utilized at all. Danka. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48411t=48408 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: RE: HP Procurve, Cisco Routers [7:48408]
a) Yes. have 6 256K (128K) Frac's coming into a Subrate DS3 (6mb) with a 3mb Cir. Traffic on the DS3 is not pegged, neither is traffic on that particular link (using mrtg) b) Yes. Saw about 13 CRC errors on the FastEthernet port of the remote router. Cleared countersthey are not growing (fast). c) have not tried test tranfers..have user reports that 5250 traffic is painting the screen. Daniel Cotts 07/09 11:27 AM a) At HQ does your Frame connection aggregate PVCs from several spokes such that the total CIR of all the spokes greatly exceeds the capacity of the port? b) Have you checked the interface statictics for the router's connection to the switch? c) What about test transfers from PC to PC at the remote site OK/Not OK ? -Original Message- From: Richard Tufaro [mailto:[EMAIL PROTECTED]] Sent: Tuesday, July 09, 2002 9:39 AM To: [EMAIL PROTECTED] Subject: OT: HP Procurve, Cisco Routers [7:48408] Hey all. Know that this is off topic but I wanted to throw it out there to see if anyone has had any feedback. Has anyone experienced any issues with HP ProCurve 4000M switches, running into a Cisco router (1720..etc.)? Any caveats? Im having a problem with one of our remote facilities and performance issues on the LAN. It appears to be related to the switches. But they are coming back through a 256K frame back to HQ. The thing is, from HQ to them fine, from them to HQ slow. REALLY SLOW. The frame is NOT utilized at all. Danka. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48412t=48408 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Class C summarization question [7:48367]
ah come on, guys, now you're all trying to outsmart yourselves. nothing in the RFC's regarding CIDR / summarization mentions a subnet zero why should it? that would defeat the purpose of CIDR/summarization. Dain Deutschman wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... One of the choices in the question was 16but 14 was not a choice. Could it be that since 14 was not a choice that 8 was the closest thing since 16 is possibly wrong because of the 0 subnet? This seems a little off the wall to me butsometimes those cisco questions are off the wall. Dain. Bob Timmons wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Firstly, 2 to the power of 4 is 16 (2x2x2x2). Secondly, regarding Carl's post, would the answer be 14? I'm not sure the subnet-zero comes into play with CIDR. I was under the impression it was only relevant to subnetting as opposed to summarizing. Does anyone know for sure? I say 8. 2 to the power of 4 Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48413t=48367 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Class C summarization question [7:48367]
Dain, Just out of curiosity, who was the author of the test question? When I was studying for my CCNP I ran into several poorly written questions and others, like this one, that were just plain wrong. Also, are the people that think that 2 to the power of 4 equals 8 the same people that write to this list asking what they should study since they failed the CCNA on the first and second attempts? -- Brad A. Nixon CCNP, CCDA, MCP, CCSA Nothing is fool proof to a sufficiently talented fool. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48414t=48367 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: HP Procurve, Cisco Routers [7:48408]
I have never used HP switches, but I have run into problems with other vendors and Cisco router Ethernet ports. You may have to hard code the speed and duplex settings on both boxes. Auto-negotiate does not always work in a cross-vendor environment. -- Brad A. Nixon CCNP, CCDA, MCP, CCSA Nothing is fool proof to a sufficiently talented fool. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48415t=48408 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: interface traffic showing unreasonable statistics [7:48397]
uday wrote: Hi all, I am using a cisco router with a frac-E1 link terminated on it (256kbps). I am running some Ipsec tunnels across this link. Sometimes i have found that i/p o/p rate shows more then 256kbps using the show interface ser command. Do you mean that the combined input/output rate exceeds 256 kbps? That could be normal. It's full duplex. The capacity is available in both directions on point-to-point WAN circuits. Priscilla i have seen it upto 32 bps? Plz can somebody explain this? thanks /regards, Uday Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48416t=48397 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: h225 IE data [7:48352]
Well, we haven't talked to Cisco about this. Somehow, and we aren't sure how, someone got the password to a Unity mailbox that was never assigned to a person (for administrative use only) and should have been locked. Once they had this, they could simply dial into any voice mailbox, opt out to the main menu, login as the comprimised mailbox, and then transfer themselves out to whereever they wanted to call. We have stopped this by A)locking and changing the entension of the comprimised mailbox, B)forcing password changes on all mailboxes, C) implementing the class of service feature so that Unity will not allow tranfers to international numbers and D)creating and assigned a calling search space to the VM route points so they cannot call out internationally (redundant, I know, but the Unity system was comprimised). We also changed all admin passwords. The troubling thing is we don't know how the password was leaked in the first place. There is no sign of a dictionary attack in Unity. It is possible that this was internal, but we don't know. We are still looking and if we find a smoking gun, I'll let you know. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48418t=48352 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: how good the LAB Center in Brussels [7:48113]
Yes, it is true that equipment is all the same however, I remember one collegue of mine who wrote the exam in Brazil for hist first attempt but failed. It was slow, very slow Telnet connection as well as Room was very hot. so I am wondering if any one who went there recently, is the situation still the same or not. Waitin time for North America is too long up to 8 months. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48419t=48113 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Placement of IDS [7:48420]
I was contemplating on where I should put my IDS. I have a simple network with only one Internet connection to my ISP. It is firewalled with an internal network that does not allow any incoming connections via firewall and a DMZ which has web, DNS, and email server. My question is should I put the IDS behind or in front of my firewall? What are most of you doing? I realize if it is behinf the FW I will not be able to detect a lot of possible security breaches, such as users trying to rsh or telnet into my servers since this is blocked by FW. Should I care that people are trying to get in or attack if the firewall is already blocking it? The IDS could easily handle the traffic since its only at the 1MB-2MB range. sam sneed Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48420t=48420 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Cut-through vs Store Forward [7:48316]
Hello again, Priscilla, you have said that an ethernet frame must be at least 64 bytes, right?. I have just placed an sniffer on my LAN and I found over 3000 out of 15.000 packets. Does this mean that 20% of those packets are illegal? Thanks Alejandro Acosta - Original Message - From: Priscilla Oppenheimer To: Sent: Monday, July 08, 2002 1:08 PM Subject: RE: Cut-through vs Store Forward [7:48316] Alejandro Acosta Alamo wrote: Hello, I understand the differences between Cut-through and Store Forward. My question is: How do you decide with method to use?, in whch situation have you change the switching method?. Thanks Alejandro Acosta A lot of switches support only one method, so you don't have a choice. If you do have a choice, the decision is based on the number of errors on your network. Cut-through doesn't do any error checking and in fact forwards frames that have a bad CRC or are too short. Ethernet says that frames must be at least 64 bytes. Anything less is considered a fragment and is illegal. Cut-through forwards fragments that have an entire destination address that can be looked up to get a port number. If your switch connects many shared networks, then CRC errors and fragments due to collisions are normal. But why waste bandwidth forwarding these to other ports on the LAN? In this case, you might want to go with store-and-forward which does not forward errored frames or fragments. If your switch connects single devices all using full-duplex, then it's unlikely that you are experiencing many CRC or fragments. So, cut-through makes the most sense. Priscilla Oppenheimer http://www.priscilla.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48421t=48316 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
DQOS test [7:48363]
Has any one taken DQOS Exam #9E0-601. Any suggestions for material used. Have used any of the Boson tests to gauge your prepardness. I'll appreciate any pointers. Thanks Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48363t=48363 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: is quot;ppp auth chap callinquot; configured [7:48319]
What's your question? Carl Timm, CCIE# 7149 Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48385t=48319 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Idle mode only for X.25 PVC or SVC? [7:48427]
as we know, PLP operates in 5 modes: call setup, data transfer, idle, call clearing, and restart. also we know SVC will be torn down where DTEs have no more data to transfer. so I think for SVC, there is no idle mode. but on cisco webpage http://www.cisco.com/univercd/cc/td/doc/cisintwk/ito_doc/x25.htm, it's said idle mode is only for PVCs. Could anyone clear it out? Thank you in advance. _ Chat with friends online, try MSN Messenger: http://messenger.msn.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48427t=48427 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Certificationzone [7:48390]
I'm still getting them. Got one today. Are you a paid subscriber? Perhaps they stopped sending to non-subscribers. HTH, Prof. Tom Lisa, CCAI Community College of Southern Nevada Cisco ATC/Regional Networking Academy richard dumoulin wrote: Anyone knows what happens with them ? They no longer send their weekly e-mails nor do they reply to e-mails sent to them. Also their forum is closed. [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48423t=48390 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Mac Layer access list - solved [7:48433]
Thank you all for your helpful suggestions. Below is the configuration that did what I wanted: to block all but a select list of MAC addresses from accessing my network through a wireless access point. The configuration below allows me to add MAC addresses as my users buy NICs. Keep in mind this is a temporary solution until I buy a Cisco Aironet 1200, which people have told me has some of this functionality built in. Thanks... --- Dennis R2#sh run Building configuration... Current configuration : 830 bytes ! version 12.1 hostname R2 no logging console enable password cisco ! ip subnet-zero no ip domain-lookup ! bridge irb ! interface Ethernet0 no ip address bridge-group 1 bridge-group 1 input-address-list 705 ! interface Ethernet1 no ip address bridge-group 1 ! ip classless ip http server ! access-list 705 permit ..abaa .. access-list 705 permit 0050..7a4c .. ! bridge 1 protocol ieee alias exec co config t alias exec i show ip route ! -Original Message- From: Dennis Laganiere [mailto:[EMAIL PROTECTED]] Sent: Monday, July 08, 2002 11:05 AM To: '[EMAIL PROTECTED]'; '[EMAIL PROTECTED]' Subject: Mac Layer access list I looked through the CCO, the groupstudy archive and my stack of cisco press books, but I can't find any information about setting up an ACL for MAC addresses. Has anybody done it before? Here's what I'm trying to do: I've got a wireless access point that lets just anybody join. I want to put a router upstream to block all but a limited number of pre-defined MAC addresses. Any thoughts? _ Commercial lab list: http://www.groupstudy.com/list/commercial.html Please discuss commercial lab solutions on this list. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48433t=48433 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: MC3810 voice config [7:48261]
So nowone knows? Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48439t=48261 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
vpngroup default-domain [7:48441]
is there a way to set a vpngroup to multiple domains rather than the default one? I have a W2K vpn client setup to one domain, but there are a couple servers that are members of another domain that I'd like to surf can I add the second domain, or will I have to edit the host file for each server? thanx, mike jablonski ~~~ Michael Jablonski ABN AMRO Asset Management Holdings, Inc. 161 North Clark St. 9th Flr Chicago, IL 60601-2468 PH: 312.884.2996 FAX: 312.278.5550 ~~~ Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48441t=48441 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: confusion on ppp auth chap callin/ppp auth pap [7:48325]
With the callin option, only the one who is calling needs to authenticate himsel. Without it, you have to configure chap usernames and password at both ends. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48392t=48325 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: confusion on ppp auth chap callin/ppp auth pap [7:48325]
My brain must have been fried last night. I just noticed that I answered the question about callback, not callin authentication. Sorry if this caused any confusion. I'm giving up answering questions at 2:30 in the morning. The actuall answer to the callin question is as follows: Callin is configured on the receiving device. Typically you will find this used in ISDN backup scenarios. There's a hub device that remote devices connect into for ISDN backup. Callin would be used on the hub device to authenticate icoming calls from the remote devices. By using callin, authentication only occurs on the hub device and not on the remote devices. I hope this helps. Carl Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48440t=48325 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: confusion on ppp auth chap callin/ppp auth pap [7:48325]
When you are using the callin option, only the one who calls needs to authenticate himsefl. You know, when you do not conigure this option, you have to configure chap username and password for both ends. Regards. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48391t=48325 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: confusion on ppp auth chap callin/ppp auth pap [7:48325]
When using PPP callin, it occurs on the receiving device. Conceptually think of it this way, the calling device places a call, the receiving device receives the call, the calling device calls the initiating device back. Hope this helps. Carl Timm, CCIE# 7149 Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48382t=48325 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Placement of IDS [7:48420]
My preference is to keep IDS on the inside of the firewall. The stuff blocked by the firewall will be in the firewall logs (well, maybe). IDS can be very annoying, so much that you ignore it. I'd say that's my $0.02, but after taxes, it's not even worth that. :-) sam sneed 07/09/02 11:20AM I was contemplating on where I should put my IDS. I have a simple network with only one Internet connection to my ISP. It is firewalled with an internal network that does not allow any incoming connections via firewall and a DMZ which has web, DNS, and email server. My question is should I put the IDS behind or in front of my firewall? What are most of you doing? I realize if it is behinf the FW I will not be able to detect a lot of possible security breaches, such as users trying to rsh or telnet into my servers since this is blocked by FW. Should I care that people are trying to get in or attack if the firewall is already blocking it? The IDS could easily handle the traffic since its only at the 1MB-2MB range. sam sneed Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48442t=48420 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Multicasting Examples [7:48395]
Rob, If you have CCO login access, you can use this URL to get some sample scenarios. http://www.cisco.com/warp/public/105/48.html Let me know if can't access it. Hth, Angel -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Robert Massiache Sent: Tuesday, July 09, 2002 7:14 AM To: [EMAIL PROTECTED] Subject: Multicasting Examples [7:48395] Hi I want to work on IP Multicast in my home lab... Any idea on examples..to workout. Thanks and Regards Rob _ Chat with friends online, try MSN Messenger: http://messenger.msn.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48422t=48395 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Certificationzone [7:48390] (resend 2) [7:48443]
At 11:12 AM + 7/9/02, richard dumoulin wrote: Anyone knows what happens with them ? They no longer send their weekly e-mails nor do they reply to e-mails sent to them. Also their forum is closed. I'm puzzled. First, we are still actively here. Just for quality control, I am designated as a regular customer on the weekly list, and I received the weekly update today. Last night, I received some customer questions, and there are a bunch of tutorials in process. I'll copy this to the tech support people. Since the Groupstudy message doesn't show your direct email, please send me a direct address and I'll try to find out what the problem is. Did you ever get any email bounces? There has been an intermittent mail server bug, that only seems to happen on weekends, that bounces a large message, unless you first send a short message to feed That Which Eats Email and then resend. -- What Problem are you trying to solve? ***send Cisco questions to the list, so all can benefit -- not directly to me*** Howard C. Berkowitz [EMAIL PROTECTED] Chief Technology Officer, GettLab/Gett Communications http://www.gettlabs.com Technical Director, CertificationZone.com http://www.certificationzone.com retired Certified Cisco Systems Instructor (CID) #93005 Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48443t=48443 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Passive FTP [7:48357]
Simer Mayo wrote: The users are on the inside interface behind the PIX firewall and are trying to make an pftp connection to the outside world. They are being authenticated from the outside server but then the section hangs trying to do a list command. The fixup protocol port 21 is enable on PIX and there is no explicit outbound restriction from the inside interface. The outside server is using port range 4-40020 for passive FTP. I tried enabling this range on the fixup protocol too but it didn't work. Please advice Thanks much SM FTP is notorious for causing problems on networks with firewalls. I have actually run into cases where it simply would not work due to unconfigurable applications and a combination of network and personal firewalls. FTP is also problematic on networks with NAT because the IP address appears in the PORT command (when active is used) and in the server's reply to the client's PASV command (when passive is used). So, I wrote a white paper on FTP (finally, I've been meaning to do this for a while.) It is available from this page: http://www.troubleshootingnetworks.com/resources.html Hope it helps! Priscilla P.S. By the way, as the paper mentions, if your use for FTP is limited to updating Web pages, there is an alternative: a new protocol called Web-based Distributed Authoring and Versioning (WebDAV). WebDAV is a set of extensions to the Hypertext Transfer Protocol (HTTP) to allow users to collaboratively edit and manage files on remote Web servers. See RFC 2518 for more information. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48444t=48357 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: interface traffic showing unreasonable statistics [7:48397]
Priscilla's answer is very true, but I have seen interfaces reporting one-way traffic greater than they should be able to transmit - for example, an ISDN B-channel reporting an output rate of 66 kbps. Not a pretty sight. While I didn't check it in detail, my assumption was that it was reporting the load the router was attempting to shove over the link - I don't think all that traffic was making it to the other end :-( JMcL - Forwarded by Jenny Mcleod/NSO/CSDA on 10/07/2002 08:38 am - Priscilla Oppenheimer Sent by: [EMAIL PROTECTED] 10/07/2002 02:31 am Please respond to Priscilla Oppenheimer To: [EMAIL PROTECTED] cc: Subject:RE: interface traffic showing unreasonable statistics [7:48397] uday wrote: Hi all, I am using a cisco router with a frac-E1 link terminated on it (256kbps). I am running some Ipsec tunnels across this link. Sometimes i have found that i/p o/p rate shows more then 256kbps using the show interface ser command. Do you mean that the combined input/output rate exceeds 256 kbps? That could be normal. It's full duplex. The capacity is available in both directions on point-to-point WAN circuits. Priscilla i have seen it upto 32 bps? Plz can somebody explain this? thanks /regards, Uday Important: This e-mail is intended for the use of the addressee and may contain information that is confidential, commercially valuable or subject to legal or parliamentary privilege. If you are not the intended recipient you are notified that any review, re-transmission, disclosure, use or dissemination of this communication is strictly prohibited by several Commonwealth Acts of Parliament. If you have received this communication in error please notify the sender immediately and delete all copies of this transmission together with any attachments. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48445t=48397 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: OT: HP Procurve, Cisco Routers [7:48408]
I'd check for a full-duplex setting on switchports connected to half-duplex devices. This would allow better performance going to the users than coming from the users. However, it still wouldn't be great. John Richard Tufaro 7/9/02 8:38:57 AM Hey all. Know that this is off topic but I wanted to throw it out there to see if anyone has had any feedback. Has anyone experienced any issues with HP ProCurve 4000M switches, running into a Cisco router (1720..etc.)? Any caveats? Im having a problem with one of our remote facilities and performance issues on the LAN. It appears to be related to the switches. But they are coming back through a 256K frame back to HQ. The thing is, from HQ to them fine, from them to HQ slow. REALLY SLOW. The frame is NOT utilized at all. Danka. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48409t=48408 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Certificationzone [7:48390]
At 11:12 AM + 7/9/02, richard dumoulin wrote: Anyone knows what happens with them ? They no longer send their weekly e-mails nor do they reply to e-mails sent to them. Also their forum is closed. I'm puzzled. First, we are still actively here. Just for quality control, I am on the subscriber list, and I've been receiving the weekly updates on schedule. Last night, I received some subscriber questions, and there are a bunch of tutorials in process. I'll copy this to the tech support people. Since the Groupstudy message doesn't show your direct email, please send me a direct address and I'll try to find out what the problem is. Did you ever get any email bounces? There has been an intermittent mail server bug, that only seems to happen on weekends, that bounces a large message, unless you first send a short message to feed That Which Eats Email and then resend. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48400t=48390 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Placement of IDS [7:48420]
Most security breaches are by employees. With that out of the way, I would place the IDS engine in front of the firewall to catch attacks against devices in the DMZ. In a small trusting environment, your employees are probably not your biggest threat. -Original Message- From: sam sneed [mailto:[EMAIL PROTECTED]] Sent: Tuesday, July 09, 2002 12:20 PM To: [EMAIL PROTECTED] Subject: Placement of IDS [7:48420] I was contemplating on where I should put my IDS. I have a simple network with only one Internet connection to my ISP. It is firewalled with an internal network that does not allow any incoming connections via firewall and a DMZ which has web, DNS, and email server. My question is should I put the IDS behind or in front of my firewall? What are most of you doing? I realize if it is behinf the FW I will not be able to detect a lot of possible security breaches, such as users trying to rsh or telnet into my servers since this is blocked by FW. Should I care that people are trying to get in or attack if the firewall is already blocking it? The IDS could easily handle the traffic since its only at the 1MB-2MB range. sam sneed Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48432t=48420 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: interface traffic showing unreasonable statist [7:48397]
[EMAIL PROTECTED] wrote: Priscilla's answer is very true, but I have seen interfaces reporting one-way traffic greater than they should be able to transmit - for example, an ISDN B-channel reporting an output rate of 66 kbps. Not a pretty sight. While I didn't check it in detail, my assumption was that it was reporting the load the router was attempting to shove over the link - I don't think all that traffic was making it to the other end :-( Were there also output drops? It seems like there would have to be. Another thought is that it's just an average. There could be rounding errors. Yeah, that's it, rounding errors. ;-) Also, I've always wondered about CIRs and fractional interfaces. The router doesn't know that it's not supposed to send above its interface type, without some advanced configuration, does it? Priscilla JMcL - Forwarded by Jenny Mcleod/NSO/CSDA on 10/07/2002 08:38 am - Priscilla Oppenheimer Sent by: [EMAIL PROTECTED] 10/07/2002 02:31 am Please respond to Priscilla Oppenheimer To: [EMAIL PROTECTED] cc: Subject:RE: interface traffic showing unreasonable statistics [7:48397] uday wrote: Hi all, I am using a cisco router with a frac-E1 link terminated on it (256kbps). I am running some Ipsec tunnels across this link. Sometimes i have found that i/p o/p rate shows more then 256kbps using the show interface ser command. Do you mean that the combined input/output rate exceeds 256 kbps? That could be normal. It's full duplex. The capacity is available in both directions on point-to-point WAN circuits. Priscilla i have seen it upto 32 bps? Plz can somebody explain this? thanks /regards, Uday Important: This e-mail is intended for the use of the addressee and may contain information that is confidential, commercially valuable or subject to legal or parliamentary privilege. If you are not the intended recipient you are notified that any review, re-transmission, disclosure, use or dissemination of this communication is strictly prohibited by several Commonwealth Acts of Parliament. If you have received this communication in error please notify the sender immediately and delete all copies of this transmission together with any attachments. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48447t=48397 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: how good the LAB Center in Brussels [7:48113]
I heard from a friend of mine who tried to make his lab in South Africa that it was a bad decision to make it there as - according to his words - the Lab equipment itself is not located in South Africa and that people who are taking exams there are using a leased or ISDN connection to Brussles where the equipment is located, imagine this if for any reason you needed to run a debug. If this is true - and would like to hear from you guys specially people who passed there labs in South Africa whether this is true or not - I believe that Brasil would be the same like South Africa and to get good environment for the exam it would be either Brussles or USA. I guess it would be best to contact Cisco themselves and verify this information for a better decision. Yes, it is true that equipment is all the same however, I remember one collegue of mine who wrote the exam in Brazil for hist first attempt but failed. It was slow, very slow Telnet connection as well as Room was very hot. so I am wondering if any one who went there recently, is the situation still the same or not. Waitin time for North America is too misconduct and Nondisclosure violations to [EMAIL PROTECTED] Send and receive Hotmail on your mobile device: Click Here Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48428t=48113 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Mac Layer access list - solved [7:48433]
Thanks for sending the problem resolution. I really like it when people follow up with the answer! It enhances the learning experience. Priscilla Dennis Laganiere wrote: Thank you all for your helpful suggestions. Below is the configuration that did what I wanted: to block all but a select list of MAC addresses from accessing my network through a wireless access point. The configuration below allows me to add MAC addresses as my users buy NICs. Keep in mind this is a temporary solution until I buy a Cisco Aironet 1200, which people have told me has some of this functionality built in. Thanks... --- Dennis R2#sh run Building configuration... Current configuration : 830 bytes ! version 12.1 hostname R2 no logging console enable password cisco ! ip subnet-zero no ip domain-lookup ! bridge irb ! interface Ethernet0 no ip address bridge-group 1 bridge-group 1 input-address-list 705 ! interface Ethernet1 no ip address bridge-group 1 ! ip classless ip http server ! access-list 705 permit ..abaa .. access-list 705 permit 0050..7a4c .. ! bridge 1 protocol ieee alias exec co config t alias exec i show ip route ! -Original Message- From: Dennis Laganiere [mailto:[EMAIL PROTECTED]] Sent: Monday, July 08, 2002 11:05 AM To: '[EMAIL PROTECTED]'; '[EMAIL PROTECTED]' Subject: Mac Layer access list I looked through the CCO, the groupstudy archive and my stack of cisco press books, but I can't find any information about setting up an ACL for MAC addresses. Has anybody done it before? Here's what I'm trying to do: I've got a wireless access point that lets just anybody join. I want to put a router upstream to block all but a limited number of pre-defined MAC addresses. Any thoughts? _ Commercial lab list: http://www.groupstudy.com/list/commercial.html Please discuss commercial lab solutions on this list. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48449t=48433 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
OT: Begging for help at Telus [7:48429]
For the past 5 days, I've been on the phone for at least two and a half hours trying to get something relatively simple done at Telus. I've spoken with several helpdesk techs, three senior helpdesk techs, have been told numerous times that this is being escalated to the appropriate department for resolution, but somehow I keep getting the senior techs phoning me back instead. I'm hoping someone here would be able to contact the appropriate people on my behalf to get this accomplished. What I want is simple. Telus is sending out a DHCP offer message using its domain name (ab.hsia.telus.net). I'm using a domain name - I have domain name privileges as part of my internet account, and want it sent out instead. It's creating problems because my machine believes it's name is something other than what it should be. I could edit the dhcp script that runs on my Red Hat box, but I'm not a programmer and I'd probably create more problems than what it is I'm trying to solve--and it's always been my philosophy that things should be fixed properly rather than bandaged and forgotten about--which inevitably always seems to come back and bite you in the butt once you've forgotten about the fix you had to implement. Is Telus' DHCP server so complex that this can't be done? Is there anyone out there able to help? Thanks in advance... -- Leigh Anne PS. Please keep all replies to this message off the group - and reply directly to myself only. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48429t=48429 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Next Step [7:48450]
Hi Everybody I have just cleared my CCNP . With not too much hands on experience and equipment to work with . I am wondering what to peruse next . The ultimate goal is towards CCIE however I believe that It would be fair to attempt after a couple of years experience to be a true expert . Meanwhile I am wondering which certification to peruse next which helps me move towards my goal as well as makes me broad base in knowledge . Thoughts in my head have been - 1. Security specialisation 2. Voice specialisation 3. CCDA Any other ideas would be greatly appreciated . Thanks as always Jaspreet _ Consultant Andrew NZ Inc Box 50 691, Porirua Wellington 6230, New Zealand Phone +64 4 238 0723 Fax +64 4 238 0701 e-mail [EMAIL PROTECTED] WARNING: The contents of this e-mail and any attached files may contain information that is legally privileged and/or confidential to the named recipient. This information is not to be used by any other person and/or organisation. The views expressed in this document do not necessarily reflect those of Andrew NZ Inc If you have received this e-mail and any attached files in error please notify the sender by reply e-mail and destroy your copy of this message. Thank you. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48450t=48450 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: interface traffic showing unreasonable statistics [7:48397]
If it is the summ of the average input the average output this will be ok as already mentioned here that the link is full duplex, so expect to get max 256 in 256 out at the same time if you have such traffic. However, if you just mean that the 32 was the traffic of either the input or the output only then there is something wrong here. If this is the case then most probable that your ISP is letting you burst over the contracted 256K - lucky you :) - either intentionally or by mistake. If the line speed is higher than the 256K and again the provider is not rate-limiting the traffic from his side, then you will be able to go as far as the line speed can support. Give us some feedback on the line speed, the type of the circuit ( Frame-Relay, leased-line), whether this is the only circuit terminated on that interface or there are many others. Hi all, I am using a cisco router with a frac-E1 link terminated on it (256kbps). I am running some Ipsec tunnels across this link. Sometimes i have found that i/p o/p rate shows more then 256kbps using the show interface ser command. Do you mean that the combined input/output rate exceeds 256 kbps? That could be normal. It's full duplex. The capacity is available in both directions on point-to-point WAN circuits. Priscilla i have seen it upto 32 bps? Plz can somebody explain this? thanks /regards, Uday misconduct and Nondisclosure violations to [EMAIL PROTECTED] Chat with friends online, try MSN Messenger: Click Here Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48425t=48397 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Certificationzone [7:48390]
CertificationZone.com is alive and well Richard! We are currently working on a new third version of the ZONE's website which is why we have not yet reactivated the product support forum section of our site. But our site continues to expand in content each and every month. Our subscribers recently received access to the fiftieth ZONE Study Guide in our on-line collection and on August 1, we're adding an absolutely excellent WAN Troubleshooting Study Guide written by one of my networking heroes, Priscilla Oppenheimer. We continue to distribute our highly popular ZONE Challenge Question mailings, every week. We've added to them a networking term of the week. We've got a bunch of new lab scenarios we're about to add to our most popular Study Guides. We're introducing a new RS Lab Exam Workbook August 15th and we're expecting to announce the date of the ZONE's first Distance Learning Bootcamp in the near future. I'm not sure why you stopped receiving our weekly Challenge Question e-mailings but please send me your e-mail address so I can make sure we find out why. As for everyone else at Group Study, please be assured that the ZONE is very alive and very well and most grateful for the support we receive from this truly outstanding forum. If any of you have also unexpectedly stopped receiving the ZONE's weekly Challenge Question e-mailings, send us an e-mail or give us a call. Anyone knows what happens with them ? They no longer send their weekly e-mails nor do they reply to e-mails sent to them. Also their forum is closed. -- -- Mike Cinquanti President Genium Publishing Corporation [EMAIL PROTECTED] 518-842-4111 http://www.genium.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48407t=48390 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: New 2600 and %Error opening tftp [7:48265]
No service config did the trick. I had entered that command when this all started, but apparently adding it a second time and rebooting did the trick. Garble free @ the console :o) Thanks Everyone Phil -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: Sunday, July 07, 2002 5:59 PM To: [EMAIL PROTECTED] Subject: RE: New 2600 and %Error opening tftp [7:48265] Phil Lorenz wrote: %Error opening tftp://255.255.255.255/msb3100_v1_silver_c01 (Timed out) %Error opening tftp://255.255.255.255/msb3100_v1_silver_c01 (Timed out) %Error opening tftp://172.30.100.34/network-confg (Timed out) Any idea where this crap-ola is coming from or what it is ??? I just pasted a config into a new 2611 and this appears @ the console every few minutes. I disabled service config (2611# no service config) but that did not change things. Did you try 2611(config)# no service-config. In other words, make sure you're in config mode when you enter the command. That may be obvious, but sometimes we miss the obvious. ;-) The router decides that it should try to go to a TFTP server after it SLARPs from another router. This is very common in labs, for example. If your 2611 was connected via a serial cross-over cable to another router that was already configured, your router can SLARP. From then on it decides to try TFTP. It's can be very annoying. Priscilla Oppenheimer http://www.priscilla.com The running config does not contain any TFTP commands. Any ideas ??? Thanks In Advance Phil Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48451t=48265 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Cut-through vs Store Forward [7:48316]
You found 3000 of what? At 06:21 PM 7/9/2002 +, Alejandro Acosta Alamo wrote: Hello again, Priscilla, you have said that an ethernet frame must be at least 64 bytes, right?. I have just placed an sniffer on my LAN and I found over 3000 out of 15.000 packets. Does this mean that 20% of those packets are illegal? Thanks Alejandro Acosta - Original Message - From: Priscilla Oppenheimer To: Sent: Monday, July 08, 2002 1:08 PM Subject: RE: Cut-through vs Store Forward [7:48316] Alejandro Acosta Alamo wrote: Hello, I understand the differences between Cut-through and Store Forward. My question is: How do you decide with method to use?, in whch situation have you change the switching method?. Thanks Alejandro Acosta A lot of switches support only one method, so you don't have a choice. If you do have a choice, the decision is based on the number of errors on your network. Cut-through doesn't do any error checking and in fact forwards frames that have a bad CRC or are too short. Ethernet says that frames must be at least 64 bytes. Anything less is considered a fragment and is illegal. Cut-through forwards fragments that have an entire destination address that can be looked up to get a port number. If your switch connects many shared networks, then CRC errors and fragments due to collisions are normal. But why waste bandwidth forwarding these to other ports on the LAN? In this case, you might want to go with store-and-forward which does not forward errored frames or fragments. If your switch connects single devices all using full-duplex, then it's unlikely that you are experiencing many CRC or fragments. So, cut-through makes the most sense. Priscilla Oppenheimer http://www.priscilla.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48431t=48316 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Cut-through vs Store Forward [7:48316]
you found 3000 out of 15000 that were what ? less than 64 bytes ? Larry Letterman Cisco Systems [EMAIL PROTECTED] -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Alejandro Acosta Alamo Sent: Tuesday, July 09, 2002 11:22 AM To: [EMAIL PROTECTED] Subject: Re: Cut-through vs Store Forward [7:48316] Hello again, Priscilla, you have said that an ethernet frame must be at least 64 bytes, right?. I have just placed an sniffer on my LAN and I found over 3000 out of 15.000 packets. Does this mean that 20% of those packets are illegal? Thanks Alejandro Acosta - Original Message - From: Priscilla Oppenheimer To: Sent: Monday, July 08, 2002 1:08 PM Subject: RE: Cut-through vs Store Forward [7:48316] Alejandro Acosta Alamo wrote: Hello, I understand the differences between Cut-through and Store Forward. My question is: How do you decide with method to use?, in whch situation have you change the switching method?. Thanks Alejandro Acosta A lot of switches support only one method, so you don't have a choice. If you do have a choice, the decision is based on the number of errors on your network. Cut-through doesn't do any error checking and in fact forwards frames that have a bad CRC or are too short. Ethernet says that frames must be at least 64 bytes. Anything less is considered a fragment and is illegal. Cut-through forwards fragments that have an entire destination address that can be looked up to get a port number. If your switch connects many shared networks, then CRC errors and fragments due to collisions are normal. But why waste bandwidth forwarding these to other ports on the LAN? In this case, you might want to go with store-and-forward which does not forward errored frames or fragments. If your switch connects single devices all using full-duplex, then it's unlikely that you are experiencing many CRC or fragments. So, cut-through makes the most sense. Priscilla Oppenheimer http://www.priscilla.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48424t=48316 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Cut-through vs Store Forward [7:48316]
.I found over 3000 out of 15.000 packets that were less than 64 bytes longer.. - Original Message - From: Alejandro Acosta Alamo To: Priscilla Oppenheimer ; Sent: Tuesday, July 09, 2002 2:10 PM Subject: Re: Cut-through vs Store Forward [7:48316] Hello again, Priscilla, you have said that an ethernet frame must be at least 64 bytes, right?. I have just placed an sniffer on my LAN and I found over 3000 out of 15.000 packets. Does this mean that 20% of those packets are illegal? Thanks Alejandro Acosta - Original Message - From: Priscilla Oppenheimer To: Sent: Monday, July 08, 2002 1:08 PM Subject: RE: Cut-through vs Store Forward [7:48316] Alejandro Acosta Alamo wrote: Hello, I understand the differences between Cut-through and Store Forward. My question is: How do you decide with method to use?, in whch situation have you change the switching method?. Thanks Alejandro Acosta A lot of switches support only one method, so you don't have a choice. If you do have a choice, the decision is based on the number of errors on your network. Cut-through doesn't do any error checking and in fact forwards frames that have a bad CRC or are too short. Ethernet says that frames must be at least 64 bytes. Anything less is considered a fragment and is illegal. Cut-through forwards fragments that have an entire destination address that can be looked up to get a port number. If your switch connects many shared networks, then CRC errors and fragments due to collisions are normal. But why waste bandwidth forwarding these to other ports on the LAN? In this case, you might want to go with store-and-forward which does not forward errored frames or fragments. If your switch connects single devices all using full-duplex, then it's unlikely that you are experiencing many CRC or fragments. So, cut-through makes the most sense. Priscilla Oppenheimer http://www.priscilla.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48430t=48316 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Certificationzone [7:48390]
I still get their weekly emails and I received my last email (non-automatic) from them last Wednesday. As for their forums being closed, there's a message on that page indicating that section is currently undergoing redesign (CertificationZone is currently in the process of redesigning this portion of our Website) and that all registered members will be notified when the redesign is complete. If you were a paying subscriber, you may have been removed from their weekly mailouts (this happened to me a long long time ago). I'm not sure if the free memberships have an expiration, but that might be why you're not receiving their weekly email anymore. Anyway, here's last week's email (the next one is due today). I can forward to you all missed weekly emails if you'd like. So no, nothing's up with Certificationzone. It's business-as-usual there. -- Leigh Anne -Original Message- From: Customer Service [mailto:[EMAIL PROTECTED]] Sent: Tuesday, July 02, 2002 10:19 AM To: [EMAIL PROTECTED] Subject: ZONE Introduces 1-Month Subscription Here are this week's Challenge Questions and the Networking Term of the Week from CertificationZone.com, plus: 1) Get RIP-ed at the ZONE 2) IP Routing is Fundamental for CCNA(tm) exam 3) New 1-month Subscription is Available 4) This Week's Networking Term of the Week 5) This Week's CCNA Challenge Question 6) This Week's CCNP(tm) Challenge Question 7) This Week's CCIE(tm) Challenge Question 1) July is the Time for CCIE and CCNP Candidates to Get RIP-ed at the ZONE == Distance vector routing and interior routing protocol problems are encountered frequently by networking professionals both in the real world and on the CCIE Qualification, CCIE Lab, and the CCNP Routing Exams. A strong understanding of the key technical concepts of RIP will help you solve these problems. Rita Puzmanova, an internationally recognized RIP expert and author, has prepared an outstanding Tutorial explaining RIP in concise, easy-to-understand language. Her Tutorial is featured in the CCIE/CCNP-level Study Guide for July, which debuted at the ZONE yesterday. Along with her Tutorial, Puzmanova has crafted 25 challenging questions to help users assess their readiness to answer the types of RIP problems they can expect to encounter on Cisco's exams. John Neiberger has put together a six-step, five-router Lab Scenario that requires users to apply their RIP knowledge and experience to a real-world networking application. If you're an active ZONE Subscriber, you now have access to all three components of the RIP Study Guide. If you're a ZONE Member, you'll be able to assess your knowledge of RIP with 25 of Puzmanova's Study Questions during the month of July. To access the RIP Study Guide, visit: http://www.certificationzone.com/studyguides/?Issue=54 2) IP Routing Tutorial Available to ZONE Members in July == You cannot pass the CCNA exam unless you understand IP Routing and no one explains the key concepts of IP Routing like the ZONE's Technical Director, Howard Berkowitz. In July, ZONE Members have free access to Howard's excellent IP Routing Tutorial. Don't let this opportunity pass you by. You'll find it at: http://www.certificationzone.com/studyguides/?Issue=9 3) New 1-Month ZONE Subscription Available == In celebration of Independence Day, the ZONE is pleased to announce that a special one-month ZONE subscription is available during the month of July at a cost of just $39.95. So, if you're a Member of the ZONE who's been hesitant to become a ZONE Subscriber because of the length of time or amount of money involved with one of our longer term subscription options, here's your chance to experience open and unrestricted access to every ZONE Tutorial, Study Question, Lab Scenario, and Practice Exam offered at our website, for the next thirty days. Order your one-month subscription at: http://www.certificationzone.com/promos/20020701_1/ 4) ZONE's New Term of the Week == Periodic vs. Triggered Updates -- One of the jobs of Routing protocols is to distribute the route information among all the routers that need it. This is done by sending out routing table updates. Periodic updates contain the entire routing table and are sent at pre-specified intervals. Triggered updates are sent after a topology change occurs, e.g., an interface goes up or down; a route becomes unreachable or reachable; or a new route is added. They contain only information on modified routes. To avoid floods of triggered updates in case of flapping interface(s), distance vector routing protocols' implementations limit their frequency (after 1 to 5 s following the last triggered update). Find out
Re: CCIE Lab Preparation Workbook [7:24920]
I bought 02 books of ccbootcamp and the information isnot good.. J Jason wrote: Brad Ellis wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Jason, Hi! thanks for the information. what technical topics did we miss in our lab scenerios? also, here is the general list of equipment you can use to do our labs: I guess somehow this pass through my newsgroup reader without me noticing it. If I were to tell you what topic you missed, then obviously I'll be breaking the NDA. That's pretty much the list of gear that you need. When you say different equipment are you referring to the different cabling you need to do? There is a standard cabling methodology that we use on our racks so we do not have to re-cable the hardware. If you would like to know what that is, you can check out our website. As far as presentation goes, we have them on single sheets of paper so it makes it easier for you to do your labs. We could bind them together, but then it would make it much harder. Besides, do you really care if it looks pretty or not? The focus of our labs are to help you pass your CCIE, plain and simple. We go right for the throat, and don't mess around! :) Our scenarios our completely focused on the high-level engineer and expect the individual to really know there stuff. I thought I knew everything before I bought the bootcamp labs (and before I even knew of ccbootcamp). After I went through lab8, I realized how little I actually knew, and got my butt in gear for my studying. Anyway, I also have a standard cabling that works fine for me . I actually spent time going through the lab scenerios trying to figure out if my eqpt would works for the scenerio and how to optimize the eqpts placements , and that waste lots of time because it has to be repeated for every lab scenerio, I'm however glad that you are working on updating the scenerios. We are in the process of going through ALL of the labs, removing the errors, removing the old technologies, making the configs standardized for our racks (frame-relay interfaces, router #s, etc), and including pre-config files (for IP addresses, etc, like the new 1-day lab). It's not so much the binding as the quality of the presentation, I could scan a page and let everybody take a look at what I mean, part of the edge of the page is missing, etc..However, I don't see the point to that This info is just meant to help people decided ... The other problem is that the labs was standardise on your eqpt, i.e. if you have AGS, you assume everybody has AGS, etc... so it's difficult to find the exact number of interfaces, etc as what you have in the scenerios.. I would have replied personally, but you didnt include your email address. Sorry for the long winded response. Thanks for your input! No problem. thanks, -Brad Ellis CCIE#5796 (RS / Security) Network Learning Inc [EMAIL PROTECTED] used Cisco gear: www.optsys.net CCIE Labs, racks, and classes: www.ccbootcamp.com Jason wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... I'm completely unbiased since I've bought both IPExperts and CCBootCamp (and Solutionlab too). The fact that I got solutionlab and IPExpert too does say something, CCBootCamp labs are not for everybody and doesn't covers everything. Having gone through both, I would say that CCBootCamp has been the defactor standard for CCIE preparation for a long time , but mistakes starts creeping in somewhere in Lab 16 onward although Lab 19 and Lab 20 improved since. Quick Comparision First Look : The first feeling is sort of disappointment, since it's a stack of papers, with no proper binding and even some info missing from the pages due to bad photocopying. If I would give CCBootCamp a 5/10 for this, then I must give IPExperts 9/10 for this. Workbook is properly binded and all printing done on glossy high quality papers . Diagrams are all in Colors and definitely not using your inkjet printer. Lab scenerios : CCBootCamp has more diverse labs , but is more distracting due to the different eqpt requirements in each lab scenerios. IPExperts builds on individual topics, making it easier to focus and also the standard lab setup makes it easier to setup the lab and focus on configurations. IP Experts breaks their lab into 19 topics and then 5 full scenerios. CCBootCamp scenerios is more tricky in certain ways. Recommendation : CCBootCamp for more experienced engineers and IPExperts for those who wants to focus on individual topics. If you are not sure , I suggest going for IPExperts first although I would give both 8/10 for the lab scenerios . Value for money : CCBootCamp is more expensive (about 50% more) , but has been around longer and has a proven ability to provides updates although somewhat
Re: Cut-through vs Store Forward [7:48316]
Alejandro Acosta Alamo wrote: .I found over 3000 out of 15.000 packets that were less than 64 bytes longer.. First, I would check how your protocol analyzer counts. An application can send a packet that is less than 64 bytes. The Ethernet driver must pad the frame out to 64 bytes. It's possible your analyzer doesn't count the padding and is giving you a length that just counts the actual data. If that's not the explanation, then you have an unhealthy network. The recipient of an Ethernet frame that is less than 64 bytes will just drop the frame. Why waste bandwidth on this junk? On a shared network, frames that are less than 64 bytes (fragments or runts) can occur due to collisions. Some collisions are normal on a shared network. But 20% is too high. Runts result when a station starts sending, gets through the preamble and into the actual frame, but not past 64 bytes, and notices that another station is sending. The transmitters send a short jam, and then stop sending. They backoff and wait a random amount of time before retransmitting. The result is that they transmitted runts (frames less than 64 bytes). On a point-to-point network (supposedly not shared), runts result from a duplex mismatch. One side thinks the link is full duplex and sends whenever it wants. The other side is set for half duplex and thinks that receiving while it's sending is a collision, stops sending, backsoff, and leaves behind a runt. Priscilla - Original Message - From: Alejandro Acosta Alamo To: Priscilla Oppenheimer ; Sent: Tuesday, July 09, 2002 2:10 PM Subject: Re: Cut-through vs Store Forward [7:48316] Hello again, Priscilla, you have said that an ethernet frame must be at least 64 bytes, right?. I have just placed an sniffer on my LAN and I found over 3000 out of 15.000 packets. Does this mean that 20% of those packets are illegal? Thanks Alejandro Acosta - Original Message - From: Priscilla Oppenheimer To: Sent: Monday, July 08, 2002 1:08 PM Subject: RE: Cut-through vs Store Forward [7:48316] Alejandro Acosta Alamo wrote: Hello, I understand the differences between Cut-through and Store Forward. My question is: How do you decide with method to use?, in whch situation have you change the switching method?. Thanks Alejandro Acosta A lot of switches support only one method, so you don't have a choice. If you do have a choice, the decision is based on the number of errors on your network. Cut-through doesn't do any error checking and in fact forwards frames that have a bad CRC or are too short. Ethernet says that frames must be at least 64 bytes. Anything less is considered a fragment and is illegal. Cut-through forwards fragments that have an entire destination address that can be looked up to get a port number. If your switch connects many shared networks, then CRC errors and fragments due to collisions are normal. But why waste bandwidth forwarding these to other ports on the LAN? In this case, you might want to go with store-and-forward which does not forward errored frames or fragments. If your switch connects single devices all using full-duplex, then it's unlikely that you are experiencing many CRC or fragments. So, cut-through makes the most sense. Priscilla Oppenheimer http://www.priscilla.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48448t=48316 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Certificationzone [7:48390]
I'm a subscriber, but not a paid subscriber, and I got another e-mail today... I believe I get them regularly. Mark -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Tom Lisa Sent: Tuesday, July 09, 2002 3:57 PM To: [EMAIL PROTECTED] Subject: Re: Certificationzone [7:48390] I'm still getting them. Got one today. Are you a paid subscriber? Perhaps they stopped sending to non-subscribers. HTH, Prof. Tom Lisa, CCAI Community College of Southern Nevada Cisco ATC/Regional Networking Academy richard dumoulin wrote: Anyone knows what happens with them ? They no longer send their weekly e-mails nor do they reply to e-mails sent to them. Also their forum is closed. [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48446t=48390 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Certificationzone [7:48390]
CertificationZone.com is alive and well Richard! We are currently working on a new third version of the ZONE's website which is why we have not yet reactivated the product support forum section of our site. But our site continues to expand in content each and every month. Our subscribers recently received access to the fiftieth ZONE Study Guide in our on-line collection and on August 1, we're adding an absolutely excellent WAN Troubleshooting Study Guide written by one of my networking heroes, Priscilla Oppenheimer. We continue to distribute our highly popular ZONE Challenge Question mailings, every week. We've added to them a networking term of the week. We've got a bunch of new lab scenarios we're about to add to our most popular Study Guides. We're introducing a new RS Lab Exam Workbook August 15th and we're expecting to announce the date of the ZONE's first Distance Learning Bootcamp in the near future. I'm not sure why you stopped receiving our weekly Challenge Question e-mailings but please send me your e-mail address so I can make sure we find out why. As for everyone else at Group Study, please be assured that the ZONE is very alive and very well and most grateful for the support we receive from this truly outstanding forum. If any of you have also unexpectedly stopped receiving the ZONE's weekly Challenge Question e-mailings, send us an e-mail or give us a call. Anyone knows what happens with them ? They no longer send their weekly e-mails nor do they reply to e-mails sent to them. Also their forum is closed. -- -- Mike Cinquanti President Genium Publishing Corporation [EMAIL PROTECTED] 518-842-4111 http://www.genium.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48452t=48390 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: confusion on ppp auth chap callin/ppp auth pap [7:48325]
I prefer to use the terms calling and called. Such that your statement would be. the calling device places a call to the called device, the called device receives the call, the called device calls the call initiating (calling) device back. Maybe that will help? -Original Message- From: Carl Timm [mailto:[EMAIL PROTECTED]] Sent: Tuesday, July 09, 2002 10:54 AM To: [EMAIL PROTECTED] Subject: RE: confusion on ppp auth chap callin/ppp auth pap [7:48325] When using PPP callin, it occurs on the receiving device. Conceptually think of it this way, the calling device places a call, the receiving device receives the call, the calling device calls the initiating device back. Hope this helps. Carl Timm, CCIE# 7149 Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48453t=48325 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: interface traffic showing unreasonable statist [7:48397]
Answers in-line. JMcL - Forwarded by Jenny Mcleod/NSO/CSDA on 10/07/2002 11:29 am - Priscilla Oppenheimer Sent by: [EMAIL PROTECTED] 10/07/2002 09:09 am Please respond to Priscilla Oppenheimer To: [EMAIL PROTECTED] cc: Subject:RE: interface traffic showing unreasonable statist [7:48397] [EMAIL PROTECTED] wrote: Priscilla's answer is very true, but I have seen interfaces reporting one-way traffic greater than they should be able to transmit - for example, an ISDN B-channel reporting an output rate of 66 kbps. Not a pretty sight. While I didn't check it in detail, my assumption was that it was reporting the load the router was attempting to shove over the link - I don't think all that traffic was making it to the other end :-( Were there also output drops? It seems like there would have to be. JMcL: I think there were. I was concentrating on dragging another few channels up by their scruffs at the time, so I wasn't too fussed about whether there were drops - I knew the users at the other end of the channels were getting lousy responses, so what's a few drops here and there ;-) Another thought is that it's just an average. There could be rounding errors. Yeah, that's it, rounding errors. ;-) JMcL: I think this can also be a factor sometimes - rounding errors or perhaps timing (calculation) issues. It might explain my 66 kbps over a B-channel, but I'm not sure it can be used to fully explain 320 Kbps over a 256 Kbps link. Also, I've always wondered about CIRs and fractional interfaces. The router doesn't know that it's not supposed to send above its interface type, without some advanced configuration, does it? JMcL: Welcome to my friend, frame relay traffic shaping :-) We have basically a hub and spoke network, so yes, without traffic shaping the hub will quite happily try to stuff 1 Mbps down a PVC that only has a 256 kbps access at the other end. This does not do good things for performance. FRTS prevents this, and keeps hub and spoke networks (and users) much happier. Priscilla JMcL - Forwarded by Jenny Mcleod/NSO/CSDA on 10/07/2002 08:38 am - Priscilla Oppenheimer Sent by: [EMAIL PROTECTED] 10/07/2002 02:31 am Please respond to Priscilla Oppenheimer To: [EMAIL PROTECTED] cc: Subject:RE: interface traffic showing unreasonable statistics [7:48397] uday wrote: Hi all, I am using a cisco router with a frac-E1 link terminated on it (256kbps). I am running some Ipsec tunnels across this link. Sometimes i have found that i/p o/p rate shows more then 256kbps using the show interface ser command. Do you mean that the combined input/output rate exceeds 256 kbps? That could be normal. It's full duplex. The capacity is available in both directions on point-to-point WAN circuits. Priscilla i have seen it upto 32 bps? Plz can somebody explain this? thanks /regards, Uday Important: This e-mail is intended for the use of the addressee and may contain information that is confidential, commercially valuable or subject to legal or parliamentary privilege. If you are not the intended recipient you are notified that any review, re-transmission, disclosure, use or dissemination of this communication is strictly prohibited by several Commonwealth Acts of Parliament. If you have received this communication in error please notify the sender immediately and delete all copies of this transmission together with any attachments. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48454t=48397 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Idle mode only for X.25 PVC or SVC? [7:48427]
Lh Ma wrote: as we know, PLP operates in 5 modes: call setup, data transfer, idle, call clearing, and restart. also we know SVC will be torn down where DTEs have no more data to transfer. so I think for SVC, there is no idle mode. but on cisco webpage http://www.cisco.com/univercd/cc/td/doc/cisintwk/ito_doc/x25.htm, it's said idle mode is only for PVCs. Actually it says idle mode is only used for SVCs, which I'm sure is what you meant to say and that's what's confusing you. I'm no X.25 expert, but idle mode probably occurs when there's no data and the devices are just sitting there sending Receiver Ready packets to each other. Closing the connection doesn't happen automatically. It requires one side to send a Clear Request message. The provider can also clear a call. Howard would know more. Have you read his X.25 paper at CertificationZone? It's great. Priscilla Could anyone clear it out? Thank you in advance. _ Chat with friends online, try MSN Messenger: http://messenger.msn.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48455t=48427 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RSVP [7:48456]
Hi There. I've read the doc from http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fqos_c/fqcprt5/qcfrsvfr.htm#xtocid20 that try to explain how to configura RSVP on Frame-Relay multipoint sub-interfaces. My first question is, based on the example provided by that doc, what is the calculation that has to be made to get the correct values for ip rsvp bandwidht command on hub and spokes routers? The second question is about FRTS. I usually calculate the values for FRTS like the following: CIR=whole interface BW minCIR=CIR provided by ISP/TELCO/etc BC=minCIR/8 BE=EIR/8 EIR=(CIR-minCIR) TC=1/8s On the example provided by http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fqos_c/fqcprt5/qcfrsvfr.htm#xtocid20, these values are calculated in a different manner. look the note bellow: Note When FRTS is enabled, the Frame Relay Committed Burst (Bc) value (in bits) should be configured to a maximum of 1/100th of the CIR value (in bits per second). This configuration ensures that the FRTS token bucket interval (Bc/CIR) does not exceed 10 Ms, and that voice packets are serviced promptly. Is that info correct? Luciano. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48456t=48456 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
TPIPS [7:48457]
Any one been playing with TPIPS ? ** visit http://www.solution6.com visit http://www.eccountancy.com - everything for accountants. UK Customers - http://www.solution6.co.uk * This email message (and attachments) may contain information that is confidential to Solution 6. If you are not the intended recipient you cannot use, distribute or copy the message or attachments. In such a case, please notify the sender by return email immediately and erase all copies of the message and attachments. Opinions, conclusions and other information in this message and attachments that do not relate to the official business of Solution 6 are neither given nor endorsed by it. * Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48457t=48457 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
VPN Question [7:48459]
I have a 3015 concentrator. I am supposed to be able to use my cable modem at home to connect to the Internet and then use my vpn client to connect to my local network on my campus. I can connect with my vpn client, but I can not map any drives on my local network on my campus. I have tried LMHosts files, changing the MTU to 1200, and both my DNS and WINS show when I type winipcfg. Any help would be appreciated. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48459t=48459 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Class C summarization question [7:48367]
Ok I guess I deserved that. I was thinking of the 4th bit has a value of 8 in my head and forgot to add the values of the rest of the bits. -Original Message- From: Michael L. Williams [mailto:[EMAIL PROTECTED]] Sent: Monday, July 08, 2002 10:01 PM To: Andy Hoang; [EMAIL PROTECTED] Subject: Re: Class C summarization question [7:48367] Wow. According to my binary math, 4 bits = 16 combinations. 1 bit = 2 combinations (2^1 = 2) 2 bits = 4 combinations (2^2 = 4) 3 bits = 8 combinations (2^3 = 8) 4 bits = 16 combinations (2^4 = 16) Now. when converting from binary to decimal, the 4th bit (from the right) has a (decimal) value of 8 (2^[4-1]), but of course when you add the values of the bits from 4 down, you get 8+4+2+1 = 15 (thus giving 16 combinations, 0 through 15) (Too all that have read my posts in the past, now you know why I bitch up a storm when I hear someone encourage someone else to memorize subnetting charts and bitswapping charts instead of taking an hour and learning how binary actually works... geez) Mike W. - Original Message - From: Andy Hoang To: Michael L. Williams ; Sent: Monday, July 08, 2002 10:51 PM Subject: RE: Class C summarization question [7:48367] I would say 8 is correct. 4 bits make 8 combinations. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Michael L. Williams Sent: Monday, July 08, 2002 8:15 PM To: [EMAIL PROTECTED] Subject: Re: Class C summarization question [7:48367] I would say 16 as well. Mike W. Dain Deutschman wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... I'm confused about a practice question for BSCN that I came across: Your routing tables are getting very large and you need to configure route summarization. How many class C internet addresses can you summarize with a /20 CIDR block? Answer: 8 Would it not be 16? Where am I going wrong? -- Dain Deutschman CNA, MCP, CCNA Data Communications Manager New Star Sales and Service, Inc. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48458t=48367 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Idle mode only for X.25 PVC or SVC? [7:48427]
Priscilla, Thank you for your reply. Yes, you're right. I really meant SVCs rather than PVCs. mlh - Original Message - From: Priscilla Oppenheimer To: Sent: Tuesday, July 09, 2002 10:07 PM Subject: RE: Idle mode only for X.25 PVC or SVC? [7:48427] Lh Ma wrote: as we know, PLP operates in 5 modes: call setup, data transfer, idle, call clearing, and restart. also we know SVC will be torn down where DTEs have no more data to transfer. so I think for SVC, there is no idle mode. but on cisco webpage http://www.cisco.com/univercd/cc/td/doc/cisintwk/ito_doc/x25.htm, it's said idle mode is only for PVCs. Actually it says idle mode is only used for SVCs, which I'm sure is what you meant to say and that's what's confusing you. I'm no X.25 expert, but idle mode probably occurs when there's no data and the devices are just sitting there sending Receiver Ready packets to each other. Closing the connection doesn't happen automatically. It requires one side to send a Clear Request message. The provider can also clear a call. Howard would know more. Have you read his X.25 paper at CertificationZone? It's great. Priscilla Could anyone clear it out? Thank you in advance. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48460t=48427 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: VPN Question [7:48459]
Uncheck Allow IPSec through NAT mode Make sure client for Microsoft client is checked Yoshi -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Naomi James Sent: Tuesday, July 09, 2002 8:43 PM To: [EMAIL PROTECTED] Subject: VPN Question [7:48459] I have a 3015 concentrator. I am supposed to be able to use my cable modem at home to connect to the Internet and then use my vpn client to connect to my local network on my campus. I can connect with my vpn client, but I can not map any drives on my local network on my campus. I have tried LMHosts files, changing the MTU to 1200, and both my DNS and WINS show when I type winipcfg. Any help would be appreciated. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48461t=48459 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: RSVP [7:48456]
Yes, 10ms is the target for sample interval for assessing voip and real-time traffic. No the RSVP value is independant of the FRTS values but YOU want to make sure you have a match so you don't reserve more than you can provide or under reserve for your requirements ;) The golden formulae for FRTS is Tc=Bc/CIR this gives 10msec = 8000 / 80 for the CCO example That gives time interval only, you then specify Be for that time interval as well as the mincir you would adaptive shape down to. RSVP is based on reserving a 'guaranteed' amount of bandwidth and in the example an RSVP statement exists for each subinterface which the sum appears on the physical interface. You might also want to specify RSVP priority queue for voice. Darren Ward (PGradCS, CCIE #8245, CCNP, CCDP, MCP) On Wed, 10 Jul 2002, Luciano Borges Moraes wrote: Hi There. I've read the doc from http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fqos_c/fqcprt5/qcfrsvfr.htm#xtocid20 that try to explain how to configura RSVP on Frame-Relay multipoint sub-interfaces. My first question is, based on the example provided by that doc, what is the calculation that has to be made to get the correct values for ip rsvp bandwidht command on hub and spokes routers? The second question is about FRTS. I usually calculate the values for FRTS like the following: CIR=whole interface BW minCIR=CIR provided by ISP/TELCO/etc BC=minCIR/8 BE=EIR/8 EIR=(CIR-minCIR) TC=1/8s On the example provided by http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fqos_c/fqcprt5/qcfrsvfr.htm#xtocid20, these values are calculated in a different manner. look the note bellow: Note When FRTS is enabled, the Frame Relay Committed Burst (Bc) value (in bits) should be configured to a maximum of 1/100th of the CIR value (in bits per second). This configuration ensures that the FRTS token bucket interval (Bc/CIR) does not exceed 10 Ms, and that voice packets are serviced promptly. Is that info correct? Luciano. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48462t=48456 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
OSPF problem [7:48463]
I have the following error whilst playing with OSPF 12:52:40: %OSPF-4-ERRRCV: Received invalid packet: mismatch area ID, from backbone area must be virtual-link but not found from 10.1.4.20, Ethernet0 I have 2 routers, Router A and Router B, back to back. Able to get the 2 connected, however when I (Router A) router ospf 20 network 10.1.10.0 0.0.0.0 area 20 (RouterB) router ospf 20 network 192.168.1.0 0.0.0.0 area 20 Should I define different areas ? Thanks for your time John ** visit http://www.solution6.com visit http://www.eccountancy.com - everything for accountants. UK Customers - http://www.solution6.co.uk * This email message (and attachments) may contain information that is confidential to Solution 6. If you are not the intended recipient you cannot use, distribute or copy the message or attachments. In such a case, please notify the sender by return email immediately and erase all copies of the message and attachments. Opinions, conclusions and other information in this message and attachments that do not relate to the official business of Solution 6 are neither given nor endorsed by it. * Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48463t=48463 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Groupstudy News Down?!?!? [7:48464]
I haven't been able to reach Groupstudy through my Outlook Express (NNTP) for quite a while now. but can reach through the web.. Is there some issue Paul? Mike W. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48464t=48464 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: OSPF problem [7:48463]
Lemme take a stab at this one. I don't run OSPF where I work, but I'd like to keep my chops up to date =) In OSPF, you need to have an Area 0. If there are 2 routers only in your network, and only one area, it needs to be Area 0. If there is only 1 Area in your network, there is no need for it to be anything other than Area 0. Since every Area must touch Area 0, it seems to me there is something in the IOS that looks for at least one interface to be in Area 0 or at least in a virtual link to Area 0. Change your areas on your routers to Area 0 and see if you have the same problem (OSPF gurus, please correct me as, again, I'm just taking a stab and would like to keep my OSPF up to date) (Now that I'm thinking about it, you could have a router that is totally within a certain Area that's not an ASBR or ABR, so not it's possible to there could be an interfaces not in Area 0... so at this point, my whole post is moot. too many rum and cokes =) OSPF gurus, please advise =) Thanks! Mike W. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48465t=48463 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
TPIPS [7:48457]
As in Telstra Private IP Service? Personally, no (sorry if that's not very helpful). But if that is what you're talking about, I expect most people on the list won't have heard of it, let alone played with it ;-) Something I'll have to check out in the future, though, so if you're using it or if you use it in the future, I'd be interested in getting your opinions. If that's not what you're talking about, what are you talking about? JMcL - Forwarded by Jenny Mcleod/NSO/CSDA on 10/07/2002 02:32 pm - John Brandis Sent by: [EMAIL PROTECTED] 10/07/2002 01:23 pm Please respond to John Brandis To: [EMAIL PROTECTED] cc: Subject:TPIPS [7:48457] Any one been playing with TPIPS ? ** visit http://www.solution6.com visit http://www.eccountancy.com - everything for accountants. UK Customers - http://www.solution6.co.uk * This email message (and attachments) may contain information that is confidential to Solution 6. If you are not the intended recipient you cannot use, distribute or copy the message or attachments. In such a case, please notify the sender by return email immediately and erase all copies of the message and attachments. Opinions, conclusions and other information in this message and attachments that do not relate to the official business of Solution 6 are neither given nor endorsed by it. * Important: This e-mail is intended for the use of the addressee and may contain information that is confidential, commercially valuable or subject to legal or parliamentary privilege. If you are not the intended recipient you are notified that any review, re-transmission, disclosure, use or dissemination of this communication is strictly prohibited by several Commonwealth Acts of Parliament. If you have received this communication in error please notify the sender immediately and delete all copies of this transmission together with any attachments. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48466t=48457 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Opinions on 4000 -vs- 6500 [7:48467]
We are going to setup some closets in hospitals for radiology to transfer large images across. They want gig to the desktop If we have 20-30 computers/printers connected with Cat5E gig to a 4000 will that be too much? I'm thinking it won't overwhelm the backplane unless all devices are cranking gig at once (which I've yet to hear of a PC or printer that can actually handle Gig .) What would be the best recommendation for Sups? Sup1, 2 or 3? We don't need L3 at that level as each 4000 would uplink (via Gig) to a 6500 for L3. We could do 6506 in the closet for the Cat5 gig modules are expensive and only have 16 ports per blade where the 4000 modules have 48 ports of 10/100/1000 for the Cat5 and are cheaper Thanks for any input Mike W. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48467t=48467 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: OSPF problem [7:48463]
Its seeing the router as no direct link to the backbone (area 0) and such is assuming you have a virtual link configured. Change your areas to 0 and see what happens. Area 0, fundamental to OSPF. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48468t=48463 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: TPIPS [7:48457]
TCPIPS is Telstras private ip network yes, and it sucks :) Thats all I have to say! Cheers Kris Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48469t=48457 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: OSPF problem [7:48463]
It is always best practice to use area 0 if it is the only area. If you have more than one area configured either one of them *must* be area 0 or there must be a virtual link to area 0. See the following for your particular error: http://www.cisco.com/warp/public/104/19.html#1 Google is your friend ;) Charles -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Michael Williams Sent: Tuesday, July 09, 2002 9:37 PM To: [EMAIL PROTECTED] Subject: RE: OSPF problem [7:48463] Lemme take a stab at this one. I don't run OSPF where I work, but I'd like to keep my chops up to date =) In OSPF, you need to have an Area 0. If there are 2 routers only in your network, and only one area, it needs to be Area 0. If there is only 1 Area in your network, there is no need for it to be anything other than Area 0. Since every Area must touch Area 0, it seems to me there is something in the IOS that looks for at least one interface to be in Area 0 or at least in a virtual link to Area 0. Change your areas on your routers to Area 0 and see if you have the same problem (OSPF gurus, please correct me as, again, I'm just taking a stab and would like to keep my OSPF up to date) (Now that I'm thinking about it, you could have a router that is totally within a certain Area that's not an ASBR or ABR, so not it's possible to there could be an interfaces not in Area 0... so at this point, my whole post is moot. too many rum and cokes =) OSPF gurus, please advise =) Thanks! Mike W. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48471t=48463 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Salary structure for CCNPs In Japan?? [7:48472]
Hi Guys, Just curious how is current Japan market for we guys,..CCNPs..CCIE qualified or watever.. I am seriously thinking about moving to japan and need some comments on the current situation and salaray structure there. Take Care, TOM _ Send and receive Hotmail on your mobile device: http://mobile.msn.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48472t=48472 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: OSPF problem [7:48463]
I *think* (she says, being too busy/lazy to look up the RFC) that if there is only a single area in an OSPF AS, it does not have to be area 0. As soon as you bung in a second area, though, you need to have one of them as area 0 or the two areas won't be able to talk to each other. What network is joining Router A and Router B? Going back to the original email... I have 2 routers, Router A and Router B, back to back. Able to get the 2 connected, however when I (Router A) router ospf 20 network 10.1.10.0 0.0.0.0 area 20 (RouterB) router ospf 20 network 192.168.1.0 0.0.0.0 area 20 Is the connection between A and B 10.1.10.0, or 192.168.1.0, or something different? Might be nice to include the connecting network in the OSPF process. Also, your network statements look a bit dodgy. If your networks are /24, try network 10.1.10.0 0.0.0.255 area 20 and likewise for Router B. Currently you are adding the interface with address 10.1.10.0/32 to the OSPF process, which is presumably not what the address of the interface actually is. I'm surprised it's giving you any errors, because I'm surprised it's doing anything. JMcL - Forwarded by Jenny Mcleod/NSO/CSDA on 10/07/2002 03:51 pm - Michael Williams Sent by: [EMAIL PROTECTED] 10/07/2002 02:36 pm Please respond to Michael Williams To: [EMAIL PROTECTED] cc: Subject:RE: OSPF problem [7:48463] Is this part of a business decision process?: Lemme take a stab at this one. I don't run OSPF where I work, but I'd like to keep my chops up to date =) In OSPF, you need to have an Area 0. If there are 2 routers only in your network, and only one area, it needs to be Area 0. If there is only 1 Area in your network, there is no need for it to be anything other than Area 0. Since every Area must touch Area 0, it seems to me there is something in the IOS that looks for at least one interface to be in Area 0 or at least in a virtual link to Area 0. Change your areas on your routers to Area 0 and see if you have the same problem (OSPF gurus, please correct me as, again, I'm just taking a stab and would like to keep my OSPF up to date) (Now that I'm thinking about it, you could have a router that is totally within a certain Area that's not an ASBR or ABR, so not it's possible to there could be an interfaces not in Area 0... so at this point, my whole post is moot. too many rum and cokes =) OSPF gurus, please advise =) Thanks! Mike W. Important: This e-mail is intended for the use of the addressee and may contain information that is confidential, commercially valuable or subject to legal or parliamentary privilege. If you are not the intended recipient you are notified that any review, re-transmission, disclosure, use or dissemination of this communication is strictly prohibited by several Commonwealth Acts of Parliament. If you have received this communication in error please notify the sender immediately and delete all copies of this transmission together with any attachments. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=48473t=48463 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
