Message for Paul Borghese [7:66279]
Paul, Please see attached message. Sorry, I don't have your personal email. Regards, Phil. __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com X-Apparently-To: [EMAIL PROTECTED] via 216.136.175.14; 26 Mar 2003 12:42:03 -0800 (PST) Return-Path: <> Received: from 216.136.175.16 (HELO web13806.mail.yahoo.com) (216.136.175.16) by mta153.mail.scd.yahoo.com with SMTP; 26 Mar 2003 12:42:02 -0800 (PST) Date: 26 Mar 2003 20:42:02 - From: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: failure delivery Content-Length: 720 Message from yahoo.com. Unable to deliver message to the following address(es). : 66.220.63.9 does not like recipient. Remote host said: 550 5.1.1 ... User unknown Giving up on 66.220.63.9. --- Original message follows. Return-Path: Message-ID: Received: from [62.31.224.1] by web13806.mail.yahoo.com via HTTP; Wed, 26 Mar 2003 20:42:02 GMT Date: Wed, 26 Mar 2003 20:42:02 + (GMT) From: =?iso-8859-1?q?Phil=20Barker?= Subject: List Problems To: [EMAIL PROTECTED] MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Paul, I appear to be having a problem receiving regular messages from the group. I seem to recall this happening once before and you managed to tweak something on the Server side. I believe it had something to do with my account being yahoo based. Could you take a look when you get the chance. Kind Regards, Phil. __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=66279&t=66279 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Message for Paul Borghese [7:66280]
Paul, Please see attached message. Sorry, I don't have your personal email. Regards, Phil. __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com X-Apparently-To: [EMAIL PROTECTED] via 216.136.175.14; 26 Mar 2003 12:42:03 -0800 (PST) Return-Path: <> Received: from 216.136.175.16 (HELO web13806.mail.yahoo.com) (216.136.175.16) by mta153.mail.scd.yahoo.com with SMTP; 26 Mar 2003 12:42:02 -0800 (PST) Date: 26 Mar 2003 20:42:02 - From: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: failure delivery Content-Length: 720 Message from yahoo.com. Unable to deliver message to the following address(es). : 66.220.63.9 does not like recipient. Remote host said: 550 5.1.1 ... User unknown Giving up on 66.220.63.9. --- Original message follows. Return-Path: Message-ID: Received: from [62.31.224.1] by web13806.mail.yahoo.com via HTTP; Wed, 26 Mar 2003 20:42:02 GMT Date: Wed, 26 Mar 2003 20:42:02 + (GMT) From: =?iso-8859-1?q?Phil=20Barker?= Subject: List Problems To: [EMAIL PROTECTED] MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Paul, I appear to be having a problem receiving regular messages from the group. I seem to recall this happening once before and you managed to tweak something on the Server side. I believe it had something to do with my account being yahoo based. Could you take a look when you get the chance. Kind Regards, Phil. __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=66280&t=66280 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: IP header [7:66060]
KWS, Question: what do u mean by the 4 bits and 32 bits > words. The IHL is 4 bits in size, this normally has the value of 5 decimal or 0101 binary. Read the terminology 32 bit words as meaning 32 bit amounts. Therefore if the value in the IHL field is 5 then the size of the IP Header is 5 x 32 bit amounts or 160 bits. 160 bits divided by 8 (bits in an Octet) yields 20 octets, which is the standard IP Header Length. Question: How do we arrive to the figure 65,535 > octects ? The total length FIELD is 16 bits wide. The maximum positive integer that can be represented in a 16 bit field is ((2 raised to the power of 16) -1) or 65536 -1 i.e 65535. Question : 576 octects is the same as 576 bytes and > how can it fit into the > total length of 16 bits which is 2 bytes. You appear to be confused here. The CONTENTS of the 16 bit field is the size of the headers and data that are about to follow. So you have a total length field that has a value within it of, for example 576 or in binary (00100100) This is the total length of the Data and Headers that are about to follow the IP Datagram. Regards, Phil. --- KW S wrote: > Dear all > > I am reading RFC760 (IP protocol) and have the > following questions. > > IHL : 4 bits > > Internet header length is the length of the internet > header in 32 bits words > > Question: what do u mean by the 4 bits and 32 bits > words > > > Total length :16 bits > > Total length is the length of the IP packets in > octect including the > internet headers and data. This field allows the > length of a packet to be up > to 65,535 octets. > > Question: How do we arrive to the figure 65,535 > octects > > Such long packets are impractical for most host and > networks. > > All hosts must be prepared to accept datagram of up > to 576 octects > > Question : 576 octects is the same as 576 bytes and > how can it fit into the > total length of 16 bits which is 2 bytes > > Thanks > kws [EMAIL PROTECTED] --- KW S wrote: > Dear all > > I am reading RFC760 (IP protocol) and have the > following questions. > > IHL : 4 bits > > Internet header length is the length of the internet > header in 32 bits words > > Question: what do u mean by the 4 bits and 32 bits > words > > > Total length :16 bits > > Total length is the length of the IP packets in > octect including the > internet headers and data. This field allows the > length of a packet to be up > to 65,535 octets. > > Question: How do we arrive to the figure 65,535 > octects > > Such long packets are impractical for most host and > networks. > > All hosts must be prepared to accept datagram of up > to 576 octects > > Question : 576 octects is the same as 576 bytes and > how can it fit into the > total length of 16 bits which is 2 bytes > > Thanks > kws [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=66073&t=66060 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: IP header [7:66060]
KWS, Question: what do u mean by the 4 bits and 32 bits > words. The IHL is 4 bits in size, this normally has the value of 5 decimal or 0101 binary. Read the terminology 32 bit words as meaning 32 bit amounts. Therefore if the value in the IHL field is 5 then the size of the IP Header is 5 x 32 bit amounts or 160 bits. 160 bits divided by 8 (bits in an Octet) yields 20 octets, which is the standard IP Header Length. Question: How do we arrive to the figure 65,535 > octects ? The total length FIELD is 16 bits wide. The maximum positive integer that can be represented in a 16 bit field is ((2 raised to the power of 16) -1) or 65536 -1 i.e 65535. Question : 576 octects is the same as 576 bytes and > how can it fit into the > total length of 16 bits which is 2 bytes. You appear to be confused here. The CONTENTS of the 16 bit field is the size of the headers and data that are about to follow. So you have a total length field that has a value within it of, for example 576 or in binary (00100100) This is the total length of the Data and Headers that are about to follow the IP Datagram. Regards, Phil. --- KW S wrote: > Dear all > > I am reading RFC760 (IP protocol) and have the > following questions. > > IHL : 4 bits > > Internet header length is the length of the internet > header in 32 bits words > > Question: what do u mean by the 4 bits and 32 bits > words > > > Total length :16 bits > > Total length is the length of the IP packets in > octect including the > internet headers and data. This field allows the > length of a packet to be up > to 65,535 octets. > > Question: How do we arrive to the figure 65,535 > octects > > Such long packets are impractical for most host and > networks. > > All hosts must be prepared to accept datagram of up > to 576 octects > > Question : 576 octects is the same as 576 bytes and > how can it fit into the > total length of 16 bits which is 2 bytes > > Thanks > kws [EMAIL PROTECTED] --- KW S wrote: > Dear all > > I am reading RFC760 (IP protocol) and have the > following questions. > > IHL : 4 bits > > Internet header length is the length of the internet > header in 32 bits words > > Question: what do u mean by the 4 bits and 32 bits > words > > > Total length :16 bits > > Total length is the length of the IP packets in > octect including the > internet headers and data. This field allows the > length of a packet to be up > to 65,535 octets. > > Question: How do we arrive to the figure 65,535 > octects > > Such long packets are impractical for most host and > networks. > > All hosts must be prepared to accept datagram of up > to 576 octects > > Question : 576 octects is the same as 576 bytes and > how can it fit into the > total length of 16 bits which is 2 bytes > > Thanks > kws [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=66075&t=66060 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: OT, Network Sniffer Software [7:59065]
Arni, Try taking a look at www.chevin.com. They have a distributed sniffer solution incorporating software from Wildpackets and JYRA software that also detects application problems like SQL, Oracle etc. Phil. --- "Arni V. Skarphedinsson" wrote: > Hi all, and sorry for the OT question, but you are > the most profesional goup > of network pepole i know about. > > My company is thinking about buying a network > sniffer package, > > basicly what we need, is a network sniffer, but > thene some extras would be > nice, like some kind of WAN module, to sniff > frame-relay and such > connections, and also some Voice and performance > testing options. > > We have been looking at Sniffer Pro Field Service > Suite PERP from NAI, and > with the sinffbook hardware, it can do most of the > thing I mentioned, but > the price is a bit high, the total price would be > around 50.000 Euros, that > is very close to 50.000 Dollars, do any of you know > about any cheaper > alternitives, or similarly priced, but would be a > better option. > > Best regards, > Arni [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=59070&t=59065 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Become a ccna teacher [7:51740]
Take the instructors course at your local or regional academy. Pass each of the 4 Semesters with 80%+ and take your CCNA cert. Hey presto your a CCAI. Phil CCNP, CCAI. --- News bluewin wrote: > Hello > Is anyone knows the way I could get some help to get > infomation on the Cisco > Certified Academy Instructor (CCAI). > Thank you very much anyway. [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=51756&t=51740 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Autonomous System for EIGRP [7:51509]
Thomas, EIGRP is an Interior (I)GRP unlike BGP which is an Exterior Routing Protocol. BGP Autonomous systems need the AS number to distinguish one from another. EIGRP on the other hand would normally be running without any knowledge of other systems EIGRP protocol. It will normally not interact with any other EIGRP protocol implementation. However, the AS number does give the option of running more than one instance of EIGRP although the load on the router CPU, memory etc may cripple it. Phil --- Thomas wrote: > Hi All, > > For EIGRP routing protocol, it requires the > Autonomous System number. Like > BGP, I am not sure if they have private and public > range of AS that can be > applied to EIGRP? If so, what's the range for > private AS for EIGRP? Who > assigns the public AS range? Thanks All! > > Thomas [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=51511&t=51509 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: mop enable [7:49487]
Its one of DEC's protocols, I seem to remember that it has no routing layer and so is only useful locally. I think it is used to download Operating Systems to dumb front ends. Phil. --- GEORGE wrote: > This command I looked it up at Cisco web site and it > says it's a > maintenance operation protocol > But what does it do exactly? [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=49520&t=49487 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: bandwidth question [7:49002]
Possibly, but is anyone actually complaining about the speed ? Check the serial interface at your end also for dropped packets, load, reliability etc over a period of about a week. If that average is over 90% then you may well do with an upgrade. Phil. --- birdy wrote: > Can anyone tell me why > > I have 2 Mbps WAN connection that reached 95 % > utilisation during peak time. > When I try to ping to my provider serial > interface(next hop),it register 10% > packet loss > > My router serial interface is showing 1.9Mbps > (incoming traffic). Since the > router is receiving 1.9 Mbps out of the 2M > pipe,which means that there is > still a balance of 0.1 Mbps (100 k) and so > therotically speaking, there > should not be any packet loss. > > I think is time for me to upgrade my bandwidth [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=49009&t=49002 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Please tell me it isnt so :( [7:47863]
Morgan, The 'enable password' command is the original command that allows you to go to 'priviliged EXEC' mode and configure the router/switch. Although the password can be encrypted, it isn't a very robust technique and can be cracked by putting the password back into the algorithm. The 'enable secret' came later and uses 128 bit key to encrypt the password, which cannot easily be cracked. Phil. --- Morgan Hansen wrote: > Hi, and once again Helo :-) > > Ive just received this note at my inbox: > > "Isn't enable password just the older form of enable > secret?" > > Reading this allmost made me go into shock! Is this > true??! Cause if it > is im out of werdz(?) > > For allmost a year now I have with 30 something > other youngsters studied > at my school (name whatever) for the CCNA and the > CNAP program. Our 2 > teachers (name irrelevant) have told us this about > the passwords: > > enable password (when logging on to the router you > should use this) > > enable secret (the password you must use to be able > to make > configuration changes in your router) > > So my question is: > > ARE WE BEING LIED TO?! (let me tell you, this school > costs $$$, so > im hoping for an answer like; NO) > Oh, and one other thing. If this turnes out to be > the truth, im having > mixed emotions about paying huge amounts of $ to be > able to use their > curriculum during my CNAP studying time, just to > find out that what they > ask of you on their CCNA exam filters things not > even MENTIONED in the > Curriculum they provide! It's the sadest thing. > > Morgan Hansen > mailto:[EMAIL PROTECTED] [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=47954&t=47863 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: teaching CCNA [7:45489]
Priscilla, I'm fairly certain that you will need to know something about the Cat 1900 switch. I've been teaching CCNA as a CCAI for a couple of months now and we have a rack of equipment purchased from Cisco consisting of 5 x Cisco 2500's and 2 x 1900 switches. We have a Lab Topology setup that is used throughout Sem II & Sem III which utilises this equipment. This lab Setup is the very same that appears in the 'diagram' questions on the #640-607. A typical question would be 'Host A cannot see Host E' Why ? You then have to diagnose the diagram/network within 15 minutes using Cisco IOS or clicking on the PC to get its config or clicking on the switch etc. The 1900 is menu driven but you can drop out to command line mode, which I would recommend. Not sure if you can use abbreviations. Probably wouldn't risk it bacause of possible typo bugs in the software. It may well have been lifted from the source code of the IOS and cross-compiled, but I'd stick to the full command just in case. Token Ring hasn't been covered in any detail. Just mention it in comparison to Ethernet i.e 802.5 v 802.3, deterministic v non-deterministic but don't go into any real detail. There still looking for the core knowledge being OSI model compared to TCP/IP (Yuk), subnetting, Access Control Lists and Hands on Config experience. Phil. --- Priscilla Oppenheimer wrote: > I will be teaching a CCNA class next week. I've > never taught an intro class > before. ;-) The textbook will be Wendell Odom's > "Cisco CCNA Exam #640-607 > Certification Guide." I didn't choose it, but I'm > fine with it. I have some > questions, however: > > Wendell covers Catalyst 1900 configuration in quite > a bit of detail. > Cisco's list of topics for 640-607 doesn't include > this, so I'm not > planning to teach it, and in fact, we won't have a > switch in the lab > probably. Will this be OK? Does anyone know if the > 640-607 test has > Catalyst 1900 configuration questions?? > > Does anyone know if the test (which now includes > router simulation > questions) allows one to use abbreviations for > commands? (such as cop run > start instead of copy running-config > startup-config)? > > Token Ring doesn't support multicast (He says > this many times.) I know > IEEE 802.5 does "officially" support it. I also know > that many Token Ring > NICs didn't support it in the early 1990s. Didn't > they fix that??? I would > have thought that Token Ring NIC vendors would have > added support for > multicast by now. > > Thanks! > > Priscilla > > > > Priscilla Oppenheimer > http://www.priscilla.com [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=45513&t=45489 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Discontiguous networks ? [7:45220]
Hi group, I set up a Lab to highlight the problem that discontiguous networks brings to distance vector protocols. I seperated three Class B networks (172.16.1.0/24, 172.16.2.0/24, 172.16.3.0/24) with the class C networks (192.168.1.4/30 & 192.168.1.8/30). As expected with RIP 1, I can clearly see network 172.16.0.0/16 being advertised over the serial interfaces, with 'debug ip rip'. I then configured the Lab for RIP 2 thinking that this would be a solution to the problem, since RIP 2 advertises the subnet mask with the network address, but ran up against the same problem as RIP 1. I can solve the problem using secondary addresses, however, I feel that RIP 2 should also solve the problem. Am I missing something here ? Just thinking out loud, should I have put 'no auto-summary' under the rip routing ? maybe it defaults to classful behaviour anyway !!! Appreciate any responses. Phil. __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=45220&t=45220 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
IGRP delay metric & loopback interfaces ? [7:44513]
Hi Group, This is a re-post as I think the other got lost. Apologies if it didn't. I set up an IGRP lab recently to show unequal cost load balancing, but came across the following problem during the process. I had 3 routers as the diameter and 2 loopback interfaces configured on the 1st and 3rd routers, advertised via the 'network' command. What I found was that the composite metric (Bw + Dly) from router 1 to router 3's loopback was higher than what I expected (It was 500 units higher infact). So, working backwards I realised that I couldn't alter the Bw side of the equation i.e 10^7/1544 was the minimum Bw along the path. So I had to introduce a delay of 5000 usecs extra, such that when I scaled down by 10 I had the 500 extra units that the Router was displaying. This I concluded is therefore the delay for virtual interfaces ? It seems a little odd at first that the delay for a virtual interface is 5 times larger than that of a 10Mbs-1 interface when you take serialisation delay into consideration. However, CPU and memory must come into play ? Phil. __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=44513&t=44513 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
IGRP and loopback interfaces ? [7:44434]
Hi, Not really a question but more of an observation. I put a lab together do demonstrate IGRP unequal cost load balancing recently, and configured 2 loopback addresses at either end of the network and advertised them via the network command. I calculated the BWigrp + DLYigrp i.e the metric associated with the distant virtual loopback and found that I was 500 short when working out the composite metric. This had me for a while but as I couldn't alter the minimum B/W for the path i.e 10^7/1544 I knew that I needed to alter the Delay summation by 5000. Anyway, on the distant router I then configured an E0 network and advertised that and found that the composite metric calculation was smaller than that of the virtual interface !!! Which is puzzling. i.e the delay associated with a virtual interface is 5000 micro secs and the delay for the e0 interface is 1000 microsecs. I suppose it has to be set to something though, i.e it isn't a dynamic property and you don't know at any one particular time what the loading on the router will be. Phil. __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=44434&t=44434 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: CCIE in 3-6 Months from cisco Interesting [7:43306]
I know for a fact that it is possible. Unisys mainframe engineers in the UK re-trained 6 Engineers to CCIE in 6 months. One passed 1st time, one second time and one had a nervous breakdown but passed on the 6th attempt. Don't know what happened to the other 3, but the one who passed 1st time was still struggling with sub-netting at times. Phil. "Steven A. Ridder" wrote: Hey, it's a good sign that they're hiring, but I can guarantee that no recent college grad can get a CCIE in 6 months with little to no experience. It must be a typo. -- RFC 1149 Compliant. Get in my head: http://sar.dynu.com ""Johnzaggat"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Join Cisco and get CCIE in 3-6 months. Must be a typo. > > http://www.cisco.com/pcgi-bin/jobs/JobAgent?rm=jobdetail&req_id=703608&keywo > rds=+ Do You Yahoo!? Get personalised at My Yahoo!. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=43331&t=43306 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: CCIE written [7:43221]
You have to remember them. Phil. "Sharifi, Reza" wrote: Hi, Can any body tell me is there is formula to figure out the maximum frame size in a RIF packet, or do I have to memorize all these numbers?. Thanks 000 516 001 1500 010 2052 011 4472 Do You Yahoo!? Get personalised at My Yahoo!. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=43292&t=43221 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Spanning Tree Question [7:42806]
Yes, All the switches should be running the spanning tree protocol. Configure the server/client ports with portfast option (if there is one). Phil. --- Anil Gupte wrote: > For spanning tree to work, do all the switches on a > network (let us say a > LAN) have to support or enable Spanning Tree? That > is the general question. > > Specifically, I have an HP Procurve connected to a > router, and then a > Netgear Switch that hooks into one of the ports on > the HP. On the Netgear > are 3 or 4 more Netgear switches (all of there are > simple unmanaged > switches)and we are pretty sure there are some > redundant loops in there - > especially with two servers that dual NICs that are > bound together using an > Intel "teaming" driver. Do I need to turn Spanning > Tree on? It is > recommended? Is it even going to work? > > Thanx for any input. > Anil Gupte [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=42815&t=42806 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Question on RIPv2 example in Doyles routing book [7:41991]
RIP V1 knows nothing about the structure of RIP v2 So it cannot know anything about the mask section within the RIP update. Therefore, it has to use the mask configured on the interface as is normal. Phil. --- Kage Roc wrote: > When a router that is running RIPv1 recieves a RIPv2 > update with a subnet > (i.e 192.168.13.80\28) will the RIPv1 router add the > subnet and mask to the > routing table as is or will it still apply the mask > of the recieving > interface ont the the subnet? According to doyles > book (Chapter 7 > troubleshooting exercises) the RIPv1 route will add > the mask of the > recieving interface. [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=42071&t=41991 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: OSPF problem [7:41195]
I don4t think OSPF v.1 ever went into production. More like a pure authentication issue. Phil. --- "Steven A. Ridder" wrote: > Could one be ospf v. 1? > > Or could one be doing PT auth and the other MD5? > > ""STRAND Scott"" wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > I had a problem between two OSPF neighbors. Here > is what I saw in the log: > > > > OSPF-4_ERRRCV Received invalid packet: BAD Version > > OSPF - Mismatch Authentication key - Message > Digest Key 1 > > > > My question is what is meant by "Bad Version". > Anyone seen this. > > > > Tks, > > Scott > > > > [GroupStudy.com removed an attachment of type > application/x-pkcs7-signature > > which had a name of smime.p7s] [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=41284&t=41195 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: iBGP full mesh ? [7:40741]
Thanks Peter, I just got the following link which confirms what you say. http://www.cisco.com/warp/public/459/bgp_noad.html#intro The BGP table must have got populated since the networks where directly connected. I also had auto-summary on (Dohh), using /30 s (Dohh, Dohh). Phil. --- Peter van Oene wrote: > Network statements only advertise routes that exists > in the routing > table. Further, if you use a "mask" on the > statement, you need to match > the prefix exactly. Usually, one uses static routes > to null0 to pin up > aggregate routes, or normal static routes (non > null0) for others. > > At 09:22 AM 4/7/2002 -0400, Phil Barker wrote: > >Hi Group, > > > >Hope someone can help out with this as I don4t have > >access to my kit at the moment. > > > >I tried to set up my first BGP lab last week. > >I configured a full iBGP mesh, three routers > connected > >in a triangle via serial lines. > > > >I set up (neighbour( statements on each router > (Hope > >Radia can forgive the extra vowel !!!) and > advertised > >the networks. > > > >I got the BGP table working but nothing was > promoted > >to the main routing table, and therefore could4nt > ping > >non directly connected interfaces. I tried various > >approaches like putting a default route in and > running > >an IGP but still no promotion to the main table. > > > >Should this be possible with iBGP ? or is it a > matter > >of loop avoidance i.e the AS Numbers won4t be > >prepended for the case of iBGP peers. > > > >Phil. > > > >__ > >Do You Yahoo!? > >Everything you'll ever need on one web page > >from News and Sport to Email and Music Charts > >http://uk.my.yahoo.com > [EMAIL PROTECTED] > > __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=40752&t=40741 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
iBGP full mesh ? [7:40741]
Hi Group, Hope someone can help out with this as I don4t have access to my kit at the moment. I tried to set up my first BGP lab last week. I configured a full iBGP mesh, three routers connected in a triangle via serial lines. I set up (neighbour( statements on each router (Hope Radia can forgive the extra vowel !!!) and advertised the networks. I got the BGP table working but nothing was promoted to the main routing table, and therefore could4nt ping non directly connected interfaces. I tried various approaches like putting a default route in and running an IGP but still no promotion to the main table. Should this be possible with iBGP ? or is it a matter of loop avoidance i.e the AS Numbers won4t be prepended for the case of iBGP peers. Phil. __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=40741&t=40741 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Caslow : Source Route Bridging Q´s pp 620 - 622 [7:40611]
On page 620 Configuring Source-Route Bridging on a 2 port Bridge. It looks like there should be a line in here - (bridge 1 protocol ibm( since on the show source on the following page the maximum hop count is 7. On page 622 Configuring Source-Route Bridging on a multiport bridge. This idea of a virtual ring. Is it simply to reduce the exponential amount of configuration that would otherwise be required ? He doesn4t appear to state WHY. Phil. __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=40611&t=40611 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: RE: My interview story [7:40553]
Yeah, I4m on your side John. I applied for a permy position with a big insurance comp when times where a bit lean. I finally got an interview reply six weeks later calling me for an interview. It turned out being a two day interview, which I immediately knew was not for me. If people want to hire my skillset they read my CV call me in and try and beat me down technically. That being done, can I get on with people etc can surely be spotted inside 2 hours, unless they are plain stupid. Phil. --- John Neiberger wrote: > That may be true, but it just sounds like something > straight > off the pages of Dilbert. :-) > > I know personally I wouldn't respond to such an > interview > well. If someone wants to test my creativity and > troubleshooting, then they should mock up a lab and > throw it at > me. Perhaps that's because I'm not used to the idea > of being > psychologically tested during an interview. > > What's next, ink blot tests? Values clarification > drills? > Written personality tests? I can see it now: > "We're sorry, > you're an INTJ but we really want an ESTJ for this > position." > > Okay, I've got to stop answering email this early. > :-) > > John > > > > On Fri, 5 Apr 2002, Jay Dunn ([EMAIL PROTECTED]) > wrote: > > > This test may sound stupid, but based on Mark's > description > I'd say they > > were attempting to assess creativity and > troubleshooting > skills. > > Sometimes pure technical skills aren't enough. > Thinking "outside the > > box" is a big part of what an employer is looking > for. I'd > say a company > > as big as SNS has plenty of experience in hiring > and knows > what they're > > doing in making this part of the interview. > > > > Jay Dunn > > IPI*GrammTech, Ltd. > > www.ipi-gt.com > > Nunquam Facilis Est > > > > -Original Message- > > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]] On > Behalf Of > > John Neiberger > > Sent: Thursday, April 04, 2002 8:39 PM > > To: [EMAIL PROTECTED] > > Subject: Re: My interview story [7:40553] > > > > Why would you want to work for a place with such > stupid > > interviews in the first place? If they select > their > employees > > based on how they play "Stranded in the Desert" or > whatever > the > > heck that was, then it's probably best you don't > work there. > > I'm sure the management there is awful. > > > > Stuff like that is a sure sign their managers have > too much > > time on their hands, and there's almost nothing > worse than a > > clueless manager with too much time. > > > > Someone needs to send those managers a Dilbert > calendar! > > > > I'm sorry to hear it didn't go well, but you > should forget > > about them and move on to a better company. > > > > John > > > > > > > > On Thu, 4 Apr 2002, Mark Zhang > ([EMAIL PROTECTED]) > > wrote: > > > > > hi,everybody,I have a interview appointment at > 9:00 AM. > > > The position is Network Engineer in > SNS(schlumberger > network > > solutions > > > sector).But I falled,at least i think so. > > > At first,every candidater have a chance to > intraduce > oneself > > for 1 > > > minute in > > > English.Then every 5 person get a group to play > a game > named > > Desert > > > Survive.Game as this:Just image you and some > people lose in > a > > deep > > > desert by > > > an airplane problem,so plz list the most > important thing to > > the lest > > > from 15 > > > tools you could use,first time by your own > choose,the > second > > by your > > > group. > > > Maybe I do not show good in the > self-introduce,then I paly > > the game,I > > > choose > > > more close to the expert answer the my group,but > the > > schlumberger do not > > > think I as the right person they are looking > for. > > > what a pity!I experienced in Motorola and a > network > > company,have design > > > a > > > large scare voip network include about 40 > nods,familiar > with > > Cisco,But > > > why?Just because a lose in the game? > > > > > > B.RMark Zhang > > > > > > > > > - > > > Do You Yahoo!? > > > Yahoo! Tax Center - online filing with TurboTax > > [EMAIL PROTECTED] > [EMAIL PROTECTED] [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=40607&t=40553 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: FIXUP PROTOCOL ON PIX 515 [7:40577]
But its a technical issue !!! email SMTP example : SMTP has lots of different MESSAGE TYPES. e.g send and reply are just two types. There are mandatory functions which must be implemented and there are optional functions which do not need to be implemented, but may prove to be useful in certain situations. If one of the options was for instance a client request to obtain internal Server details. This could be deemed a security issue. However, the Client and Server may have this functionality on by default which poses a security risk. The fixup protocol scans certain well known protocols and only allows the core functionality to work, removing the security risk. Phil. --- Joseph Rago wrote: > Hi can anyone tell me in non technical terms what > the fixup protocol is > used for > on a pix 515. Do i need to specify a fixup protocol > number for all > applications used. > Right now i am able to citrix into a server on my > DMZ and i do not have a > fixup protocol > statement defined for citrix ports. > > Thanks Joe Rago [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=40605&t=40577 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: OT/ Pass one Lab and hold two CCIE certs ? [7:38402]
What about the one who passes out as CCIE #52254 ? Phil. --- John Neiberger wrote: > Change your last name to Ccie? :-) > > Or, include both the written and lab exam, e.g. John > Neiberger, CCIE > Written, CCIE R&S #12005. > > Nah, because only one of those is a cert. I give > up, what's the trick? > > > John > > >>> "Phil Barker" > 3/15/02 8:44:23 AM >>> > How can you get CCIE after your name twice by only > passing 1 CCIE Lab exam ? > > > PS : Lateral thinking may be required > > > Phil. > > __ > Do You Yahoo!? > Everything you'll ever need on one web page > from News and Sport to Email and Music Charts > http://uk.my.yahoo.com [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=38422&t=38402 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
OSPF I Certificationzone White paper ? [7:38410]
Is this correct for the output of 'sh ip ospf database network' ? It appears to be displaying both 'Router Links' and 'Network Links'. Phil. >>>SNIP Table 9. Detailed Network Entries in an LSDB LS age: 1245 Options: (No TOS-capability, DC) LS Type: Router Links Link State ID: 223.254.254.251 Advertising Router: 223.254.254.251 LS Seq Number: 8007 Checksum: 0x55AB Length: 48 Number of Links: 2 Link connected to: a Transit Network (Link ID) Designated Router address: 10.201.32.1 (Link Data) Router Interface address: 10.201.32.2 Number of TOS metrics: 0 TOS 0 Metrics: 1 Link connected to: a Stub Network (Link ID) Network/subnet number: 192.168.10.0 (Link Data) Network Mask: 255.255.255.0 Number of TOS metrics: 0 TOS 0 Metrics: 10 Routing Bit Set on this LSA LS age: 613 Options: (No TOS-capability, DC) LS Type: Network Links Link State ID: 10.201.192.1 (address of Designated Router) Advertising Router: 223.254.254.254 LS Seq Number: 8001 Checksum: 0x5EBB Length: 32 Network Mask: /24 Attached Router: 223.254.254.254 Attached Router: 223.254.254.242 >>>END SNIP __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=38410&t=38410 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
OT/ Pass one Lab and hold two CCIE certs ? [7:38402]
How can you get CCIE after your name twice by only passing 1 CCIE Lab exam ? PS : Lateral thinking may be required Phil. __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=38402&t=38402 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Where to find "Protocol Type Code" in Cisco CD ? [7:38213]
Try RFC 1700 http://www.faqs.org/rfcs/rfc1700.html Phil. --- Ruen-Chze Loh wrote: > Hi, > > I tried searching the Cisco CD for the table of > "Protocol Type Code" used in Source Route Bridge > administrative filter, but could not find any of the > table. Can someone indicate to me where to find it > in > Cisco CD? > > What I need is a table for example: > > 8137-8138 Novell > 80D5IBM SNA Service over Ethernet > > Thank-you. > > > > = > Thank-you. > Regards, > Paul > > > > > __ > Do You Yahoo!? > Yahoo! Sports - live college hoops coverage > http://sports.yahoo.com/ [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=38219&t=38213 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Delay metric in EIGRP [7:37768]
There is a chart in Doyles book on TCP/IP or at least there is in Volume 1. Be careful with fiddling with the non-default K parameters as you need to maintain consistency throughout your network. The problem with altering the metrics may also prove difficult from a support perspective. i.e having staff that understand EIGRP to the required level. Also, be careful with HSSI links, Cisco sets the default to 200 usecs whilst every other WAN interface is set to 2 usecs. This can create problems if your HSSI link is running at say 8 Mbs as opposed to the full E1/T1 available. Phil. --- Hans PHAM wrote: > I did a search and came across this question posted > about 2 weeks ago. But I > did not get the answer I need. > > Could anyone have a link stating the default delay > for different types of > Interfaces ? Thanks a lot. > > By the way, Cisco is marketing that EIGRP can do > route selection based on > current Load, Reliablity, ... But then I found many > Cisco documents saying > that we should not activate this metric because > Cisco does not update the > real CURRENT (load or reliablity) metrics until > there's a change in network > topology. And we may end up with unexpected results > if we do activate this > metrics (i.e. set parameters k2, k4, k5 something > other than the default > values of 0 ) . Do anyone have any ideas/comments > about this. > > > Steven A. Ridder wrote: > > > > I believe the delay is by default set on the > interface by the > > router based > > on the type of link it is. I'm sure there's > charts on CCO > > somewhere. You > > can change this info on the interface with the > delay command, > > which is the > > recommended way of changing a metric if you are > forced to do > > so. [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=37843&t=37768 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: certificationZone Bridging White paper ! [7:37393]
Ken, What I was getting at was that the SRB part of the SRT bridge is still acting as a SRB bridge for those nodes on that side of the network. Therefore when end hosts on that network try to find a route through this bridge to other end hosts on the SRB side of the network the RIF field will be manipulated (for spanning and explorer packets). So to make the sweeping statement that RIF fields will never change on SRT bridges is very misleading to the newbie, (me in this instance). I conclude that it is safe to say that RIF will never be manipulated on 'Transparent only' Bridges since they don't exist. Thx for the replies, Ken. Phil. --- "Sexton, Ken" wrote: > Phil, > > Can I therefore conclude that in a 'Source Route > Transparent' Bridge the RIF field will indeed change > ? > Contrary to the whitepaper. > > On the above - In SRT mode, you are allowing the > router to source route > traffic and transparently bridge traffic on the same > device (router), but > any hosts on either bridging environment can not > communicate amongst > themselves. (i.e. a host on an SRB network cannot > sent traffic destined for > a host on the transparent side of the network). The > SRT Bridge will never > add or remove RIF information from a frame in order > for the two technologies > to communicate. This is where Source-route > Translation bridging (SR/TLB) > comes in. > > Now your above question needs some consideration. > The router will now act as > a "RIF end station", where a RIF table will be built > for end stations on the > SRB side, and a forwarding table for the transparent > side. By creating a > virtual ring within the router, all the token to > ethernet frame conversion > will take place (i.e MTU, bit ordering, etc) before > the frame is sent on its > way. It makes no sense to set the RII bit to a "1" > when sending the traffic > to a transparent end host, as it will not understand > what to do with it > anyway. > > Hope this helps > > Ken Sexton > Data Network Engineering > ICG Communications > [EMAIL PROTECTED] > > > > > -Original Message- > From: Phil Barker > [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, March 06, 2002 9:02 AM > To: [EMAIL PROTECTED] > Subject: RE: certificationZone Bridging White paper > ! [7:37393] > > > Thanks Ken, > > >>> SNIP2 > > The first SRB enabled bridge in the path (from > originator to > destination) > will see that this is an explorer packet and add its > route designator > (RD) > information to the RIF. > > >>> END SNIP2 > > Can I therefore conclude that in a 'Source Route > Transparent' Bridge the RIF field will indeed change > ? > Contrary to the whitepaper. > > Phil. > > --- "Sexton, Ken" wrote: > > Phil, > > The first bit within the Source Address Field is > > normally the I/G bit, to > > define if the source address is individual > (unicast) > > or group (multicast) > > address. In an SRB bridged environment, this one > bit > > is used to indicate if > > any Routing Information Field (RIF) information > is > > present in the Token > > frame following the SA field. > > > > This bit will be set by hosts with the SRB > > environment and used by bridges > > to indicate the above. The hosts will keep a > > "forwarding table" on how to > > reach any required destination host. > > > > If the host doesn't know how to get to a > particular > > destination, it will > > send out an explorer frame (all routes explorer > > -ARE) or a Spanning tree > > explorer (SPE) frame to locate the destination. It > > will depending on your > > bridged environment which explorer frame is used. > > > > The first SRB enabled bridge in the path (from > > originator to destination) > > will see that this is an explorer packet and add > its > > route designator (RD) > > information to the RIF. The first bridge will add > > the first ring number, > > it's bridge number, and the ring number of the > > interface it going to send > > the explorer packet out of. > > > > When all said and done - the host will know how to > > reach that particular end > > host and include RIF information in the token > frame. > > The RII, will tell the > > bridge that a RIF is present and forward the frame > > according to the RIF RC > > and RD fields. > > > > Ken Sexton > > Data Network Engineering > > ICG Communications > > [EMAIL PR
Re: certificationZone Bridging White paper ! [7:37393]
>>> SNIP The RIF is just referenced (not changed) in frames that are specifically routed. In other words, once the end station has found a route, it just puts it in the frame and the bridges just read it forwards or backwards and route accordingly. Could that be what he's getting at?? >>> END SNIP I'm not sure what he's getting at really. I agree with your explanation above but also this would be the same process for a pure SRB also !!! I think it is fair to say that a Transparent bridge never adds or removes RIFS since it doesn't use one. But to use the expression in a SRT or SR/TL bridge is misleading and very confusing without a bit of an explanation of route selection. Thanks for the link. Fun with it ??? Doubtful. Phil. http://standards.ieee.org/getieee802/ > > Have fun with it! > --- Priscilla Oppenheimer wrote: > At 08:34 AM 3/6/02, Phil Barker wrote: > >Just been re-reading this paper by David Wolfsener. > >See SNIP below. > > > >In the instance where the RII indicator is a 1 the > >frame will be 'source routed' if the frame is > 'source > >routed' then surely this implies that the RIF must > be > >manipulated in order to reflect the true Source > Route > > The RIF is just referenced (not changed) in frames > that are specifically > routed. In other words, once the end station has > found a route, it just > puts it in the frame and the bridges just read it > forwards or backwards and > route accordingly. > > Could that be what he's getting at?? > > On the other hand, I agree with you that on an > explorer, an SRT bridge > changes the RIF. SRT simply implies a couple things: > > 1) If the RII is zero, just perform normal > Ethernet-style transparent > bridging > > 2) If the RII is one and redundant bridges exits, > use the spanning tree to > determine which way to forward explorer frames. > > By the way, SRT is the only form of source route > bridging that the IEEE > ever standardized. And you can get it for free! ;-) > It's in Annex C of IEEE > 802.1D, which you can get here: > > http://standards.ieee.org/getieee802/ > > Have fun with it! > > Priscilla > > >!!! I havn't got my 'Interconnections' with me so I > >cannot confirm. > > > >Any ideas ? > > > >Phil. > > > > >>> SNIP > > > >Source Route Transparent Bridging (SRT) > > > >SRT works by analyzing the RII bit to determine if > a > >RIF is present. If the RII bit is 0, then a RIF is > not > >present and the frame is transparently bridged. If, > >however, the RII bit is 1 and a RIF is present, > then > >the frame is source routed. Note that SRT bridges > do > >not add or remove RIFs to frames. By now, you ought > to > >wonder how to configure SRT. > > > > >>> END > > > >__ > >Do You Yahoo!? > >Everything you'll ever need on one web page > >from News and Sport to Email and Music Charts > >http://uk.my.yahoo.com > > > Priscilla Oppenheimer > http://www.priscilla.com [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=37535&t=37393 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: certificationZone Bridging White paper ! [7:37393]
Thanks Ken, >>> SNIP2 The first SRB enabled bridge in the path (from originator to destination) will see that this is an explorer packet and add its route designator (RD) information to the RIF. >>> END SNIP2 Can I therefore conclude that in a 'Source Route Transparent' Bridge the RIF field will indeed change ? Contrary to the whitepaper. Phil. --- "Sexton, Ken" wrote: > Phil, > The first bit within the Source Address Field is > normally the I/G bit, to > define if the source address is individual (unicast) > or group (multicast) > address. In an SRB bridged environment, this one bit > is used to indicate if > any Routing Information Field (RIF) information is > present in the Token > frame following the SA field. > > This bit will be set by hosts with the SRB > environment and used by bridges > to indicate the above. The hosts will keep a > "forwarding table" on how to > reach any required destination host. > > If the host doesn't know how to get to a particular > destination, it will > send out an explorer frame (all routes explorer > -ARE) or a Spanning tree > explorer (SPE) frame to locate the destination. It > will depending on your > bridged environment which explorer frame is used. > > The first SRB enabled bridge in the path (from > originator to destination) > will see that this is an explorer packet and add its > route designator (RD) > information to the RIF. The first bridge will add > the first ring number, > it's bridge number, and the ring number of the > interface it going to send > the explorer packet out of. > > When all said and done - the host will know how to > reach that particular end > host and include RIF information in the token frame. > The RII, will tell the > bridge that a RIF is present and forward the frame > according to the RIF RC > and RD fields. > > Ken Sexton > Data Network Engineering > ICG Communications > [EMAIL PROTECTED] > > > > > -Original Message- > From: Phil Barker > [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, March 06, 2002 6:35 AM > To: [EMAIL PROTECTED] > Subject: certificationZone Bridging White paper ! > [7:37393] > > > Just been re-reading this paper by David Wolfsener. > See SNIP below. > > In the instance where the RII indicator is a 1 the > frame will be 'source routed' if the frame is > 'source > routed' then surely this implies that the RIF must > be > manipulated in order to reflect the true Source > Route > !!! I havn't got my 'Interconnections' with me so I > cannot confirm. > > Any ideas ? > > Phil. > > >>> SNIP > > Source Route Transparent Bridging (SRT) > > SRT works by analyzing the RII bit to determine if a > RIF is present. If the RII bit is 0, then a RIF is > not > present and the frame is transparently bridged. If, > however, the RII bit is 1 and a RIF is present, then > the frame is source routed. Note that SRT bridges do > not add or remove RIFs to frames. By now, you ought > to > wonder how to configure SRT. > > >>> END > > __ > Do You Yahoo!? > Everything you'll ever need on one web page > from News and Sport to Email and Music Charts > http://uk.my.yahoo.com [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=37411&t=37393 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
certificationZone Bridging White paper ! [7:37393]
Just been re-reading this paper by David Wolfsener. See SNIP below. In the instance where the RII indicator is a 1 the frame will be 'source routed' if the frame is 'source routed' then surely this implies that the RIF must be manipulated in order to reflect the true Source Route !!! I havn't got my 'Interconnections' with me so I cannot confirm. Any ideas ? Phil. >>> SNIP Source Route Transparent Bridging (SRT) SRT works by analyzing the RII bit to determine if a RIF is present. If the RII bit is 0, then a RIF is not present and the frame is transparently bridged. If, however, the RII bit is 1 and a RIF is present, then the frame is source routed. Note that SRT bridges do not add or remove RIFs to frames. By now, you ought to wonder how to configure SRT. >>> END __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=37393&t=37393 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: 2501 console port doesn't respond to reverse telnet [7:37160]
Have you got "login" enabled and "transport input all" enabled. Phil. --- Mike Dickson wrote: > I have a 2501 router whose console (and aux) port > doesn't respond when > connected to a 2511 and accessed via reverse telnet. > The 2511 reports the > connection is open, but I never get back a prompt > from the 2501. The > console port works when directly connected to the > serial port of my laptop. > Also, I've switched cables between the problem 2501 > and other routers in my > lab, and the problem follows the 2501, not the cable > nor the line on the > 2511. I've tried the 'clear line #' command, but it > doesn't help. > > Any ideas? > > TIA > > Mike Dickson > MCSE+Internet, MCDBA, CCNP, CCDP > Dickson Network Designs > voice (512)-422-3192 fax (512) 394-0320 > www.dicksonnetworks.com [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=37160&t=37160 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Delay Metric in EIGRP [7:36001]
The 'Bandwidth' and 'Delay' parameters ARE metrics, which are sent to neighbours in packets in order that DUAL can be run to calculate its topological database and routing table. Phil. --- "Steven A. Ridder" wrote: > So is it safe for me to conclude that I was wrong in > stating that EIGRP > sends the metrics to its neighbors. It actually > sends the raw data such as > bandwidth, and delay, and the neighbor router uses > the DUAL FSM process to > calculate the Reported Distance and then it's > distance? I've been sniffing > and debugging all morning and I can't find a metric > in a packet, just raw > data. > > -- > RFC 1149 Compliant. > > ""Priscilla Oppenheimer"" wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > The delay part of the EIGRP composite metric is > not measured. It's based > on > > the type of interface. Each type of interface has > a default value. You can > > change it, although this is risky and not > recommended. > > > > Because EIGRP is a distance-vector protocol, the > router sends route > updates > > that list networks. For each network, the router > states the different > parts > > of the composite metric: > > > > 1) The delay to get to the network, which is a > cumulation of all interface > > delays. > > > > 2) The bandwidth to that network, which is the > minimum bandwidth for all > > interfaces. > > > > 3) Reliability which is not used by default, but > you can configure the > > router to use it. If used, the reliability is > measured and represents how > > much of the bandwidth to the network is in use. > > > > 4) Load which is not used by default, but you can > configure the router to > > use it. If used, the load is measured and > represents the fraction of > > packets that arrive at the network undamaged. > > > > The router also sends the following info, which is > not part of the metric, > > but useful for other routers to know: > > > > 1) MTU is the maximum packet size that can be sent > along the entire path > > without fragmentation. (That is, it is the minimum > of the MTUs of all the > > networks involved in the path.) > > > > 2) The hop count is simply the number of routers > that a packet will have > to > > go through to get to the destination. > > > > 3) Next hop is the address of the router to use to > get to the destination, > > which is usually the router sending the update. > > > > Priscilla > > > > At 05:15 PM 2/20/02, Yatou Wu wrote: > > >Hi, > > > > > >In EIGRP, the delay metric is taken as configured > in the interface of the > > >router by the administrator, by default, or by > measurement? > > > > > >when the router calculates the metric, it needs > to know the minimum > > >bandwidth along the path, and also the delay > along the path. how can the > > >router pass the infor around? pass the total > delay along the path, or > delay > > >of every link? > > > > > >thanks > > > > > >yatou > > > > > > >_ > > >Get your FREE download of MSN Explorer at > http://explorer.msn.com/intl.asp. > > > > > > Priscilla Oppenheimer > > http://www.priscilla.com [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=36059&t=36001 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
I need a hyperterminal program that supports 4800 bps. [7:35861]
Hi group, I posted this one earlier in the month but cannot find anything in the archives. I need to fix a router later today that has its config reg set such that bits 10/11 are switched on so as to support 4800 bps. I need to change it back to 9600 but need s/w to support this first. Some of you listed some sites for free downloads which I have but on another computer miles away. Can anyone resupply the links ? Regards, Phil. __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=35861&t=35861 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: collissions on serial line? [7:34816]
Not to my knowledge. Collisions are only relevant to contention based technologies the most common being CSMA/CD (Collision Sense Multiple Access with Collision Detection) as defined by the IEEE in 802.3. Serial links do not fit this bill as they have separate Tx and Rx pairs and therefore operate as full duplex. Regards, Phil. --- somera cecilia wrote: > Folks, I've been searching CCO but cannot find > answers to this. Is it > possible to get collissions in serial lines? If > there are, what could cause > this? [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=34836&t=34816 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: I changed my config reg to 0x2C02 yikes !!! [7:34679]
Thanks for saving my blushes folks. Phil. --- Andrew Larkins wrote: > Secure CRT has this - very good!! > > See www.vandyke.com > > -Original Message- > From: Daniel Cotts [mailto:[EMAIL PROTECTED]] > Sent: 07 February 2002 04:08 AM > To: [EMAIL PROTECTED] > Subject: RE: I changed my config reg to 0x2C02 yikes > !!! [7:34679] > > > Time to look for another terminal program. Check out > the archives for > teraterm. > > > -Original Message- > > From: Phil Barker > [mailto:[EMAIL PROTECTED]] > > Sent: Wednesday, February 06, 2002 7:30 PM > > To: [EMAIL PROTECTED] > > Subject: RE: I changed my config reg to 0x2C02 > yikes !!! [7:34679] > > > > > > Oh Gawd !!! > > > > I don't like the look of this. > > > > HyperT is a drop down menu and 4800 isn't on the > list. > > Can I get this bit rate into hyperT somehow ? > > > > Phil. > > > > --- Daniel Cotts wrote: > > > bit 12 = 0, bit 11 = 1 so 4800 > > > Watch the wrap. See: > > > > > > http://www.cisco.com/univercd/cc/td/doc/product/access/acs_fix > > /cis2000/c2000 > > > qs/22812.htm > > > > > > > -Original Message- > > > > From: Phil Barker > > > [mailto:[EMAIL PROTECTED]] > > > > Sent: Wednesday, February 06, 2002 3:31 PM > > > > To: [EMAIL PROTECTED] > > > > Subject: I changed my config reg to 0x2C02 > yikes > > > !!! [7:34679] > > > > > > > > > > > > Hi group, > > > > I've changed my config register to 0x2C02 > from > > > the > > > > default 0x2102. > > > > > > > > I was only meaning to change the console speed > but > > > > inadvertantly change the broadcast to all 0's > (I'm > > > not > > > > worried about the latter). > > > > > > > > So I have a bit setting for the speed of 01 > > > whereas it > > > > used to be 00 or 9600 bps. What speed does 01 > > > > represent. Is it 19200 bps ? > > > > > > > > I was trying higher values earlier in hyperT > but I > > > > don't have access to the router until > tomorrow. > > > > > > > > Regs, > > > > > > > > Phil. > > > > > > > > > __ > > > > Do You Yahoo!? > > > > Everything you'll ever need on one web page > > > > from News and Sport to Email and Music Charts > > > > http://uk.my.yahoo.com > > > [EMAIL PROTECTED] > > > > > > > > __ > > Do You Yahoo!? > > Everything you'll ever need on one web page > > from News and Sport to Email and Music Charts > > http://uk.my.yahoo.com [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=34740&t=34679 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: I changed my config reg to 0x2C02 yikes !!! [7:34679]
Oh Gawd !!! I don't like the look of this. HyperT is a drop down menu and 4800 isn't on the list. Can I get this bit rate into hyperT somehow ? Phil. --- Daniel Cotts wrote: > bit 12 = 0, bit 11 = 1 so 4800 > Watch the wrap. See: > http://www.cisco.com/univercd/cc/td/doc/product/access/acs_fix/cis2000/c2000 > qs/22812.htm > > > -Original Message- > > From: Phil Barker > [mailto:[EMAIL PROTECTED]] > > Sent: Wednesday, February 06, 2002 3:31 PM > > To: [EMAIL PROTECTED] > > Subject: I changed my config reg to 0x2C02 yikes > !!! [7:34679] > > > > > > Hi group, > > I've changed my config register to 0x2C02 from > the > > default 0x2102. > > > > I was only meaning to change the console speed but > > inadvertantly change the broadcast to all 0's (I'm > not > > worried about the latter). > > > > So I have a bit setting for the speed of 01 > whereas it > > used to be 00 or 9600 bps. What speed does 01 > > represent. Is it 19200 bps ? > > > > I was trying higher values earlier in hyperT but I > > don't have access to the router until tomorrow. > > > > Regs, > > > > Phil. > > > > __ > > Do You Yahoo!? > > Everything you'll ever need on one web page > > from News and Sport to Email and Music Charts > > http://uk.my.yahoo.com > [EMAIL PROTECTED] > > __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=34710&t=34679 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
I changed my config reg to 0x2C02 yikes !!! [7:34679]
Hi group, I've changed my config register to 0x2C02 from the default 0x2102. I was only meaning to change the console speed but inadvertantly change the broadcast to all 0's (I'm not worried about the latter). So I have a bit setting for the speed of 01 whereas it used to be 00 or 9600 bps. What speed does 01 represent. Is it 19200 bps ? I was trying higher values earlier in hyperT but I don't have access to the router until tomorrow. Regs, Phil. __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=34679&t=34679 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Cat2924 sending out broadcast message [7:34024]
--- Priscilla Oppenheimer wrote: > I'm impressed. Wouldn't it be cool if that skill > were required for CCIE? I only wish !!! It would make my life a lot easier. > ;-) It's certainly more useful than being able to > hand decode Token Ring > RIFs? TRing RIF decodes are another of my pet hates. These questions only prove 2 things in my opinion. You can convert hex to binary and you have a memory !!! Phil. > > Priscilla > > At 07:02 AM 2/1/02, Phil Barker wrote: > >Version 4: > >HLEN = 5: Normal IP Header (5 losts of 32 bits) > >Service Type 0: Normal. > >Total Length = 328 bytes. Thus data length = 308 > >bytes. > >Identification = 51514. Flags & Offset = 0. > >TTL = 255. > >Protocol 17: UDP. > >Header checksum 0xf16a. > >Source IP : 0.0.0.0 > >Dest IP : 255.255.255.255 b/cast > >Src Port 68: bootp client > >Dest Port 67: bootp server > >Message Length = 308 (length - IP header) > >No Checksum: > > > > > >4500 0148 c93a ff11 f16a > > 0044 0043 0134 0101 0600 > > a3c6 > > 0010 0b3c 3580 > > > > > > > >Bootp client to server. > > > >Looks like because it has no source address > 0.0.0.0, > >it is trying to find it via a bootp server. I think > >this operates like RARP except it is routable !!! > > > >Not totally sure though. > > > >Regards, > > > >Phil. > > > > --- Tay Chee Yong wrote: > Hi > >all, > > > > > > Just like to enquire some issue regarding > Catalyst > > > 2924 > > > > > > I have a pretty old Catalyst 2924 (C2900XL-H-M) > > > switch in my office running > > > IOS Version 11.2(8)SA3, however, it seems that > the > > > switch is constantly > > > sending out broadcast messages as captured by > > > tcpdump. > > > > > > 17:14:51.053952 0:10:b:3c:35:80 Broadcast ip > 342: > > > 0.0.0.0.bootpc > > > > 255.255.255.255.bootps: secs:41926 [|bootp] > > > 4500 0148 c93a ff11 f16a > > > 0044 0043 0134 0101 0600 > > > a3c6 > > > 0010 0b3c 3580 > > > > > > > > > > > > I did not configure any IP address on Vlan 1 on > the > > > switch, but I did > > > segment the switch to contain 2 more vlans (Vlan > 2, > > > 3) However, I also have > > > some machines residing on Vlan 1. > > > > > > However, the broadcast problem disappear after I > > > move out the vlan1 > > > machines into another newly created Vlan (vlan > 4), > > > after I had shutdown > > > Interface Vlan 1. > > > > > > Can anyone care to enlighten me? Thanks. > > > > > > Regards, > > > Cheeyong > >[EMAIL PROTECTED] > > > >__ > >Do You Yahoo!? > >Everything you'll ever need on one web page > >from News and Sport to Email and Music Charts > >http://uk.my.yahoo.com > > > Priscilla Oppenheimer > http://www.priscilla.com [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=34349&t=34024 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: What is the definition of Broadband ISDN ? [7:34037]
Found another one in William Stallings 'Data and Computer Communications' 1991 provided by the then named CCITT "a service requiring transmission channels capable for providing rates greater than the primary rate". He continues : To contrast this new network and these new services to the original concept of ISDN, that original concept is now being referred to as narrowband ISDN. Phil. --- Daniel Cotts wrote: > Early terminology for what became ATM. "In the > evolution from the current > telecommunication networks towards the Integrated > Broadband Communication > Network (IBCN) also called Full Service Network > (FSN), some important > directions and guidelines have been made. IBCN is > often referred to as the > Broadband Integrated Services Digital Network > (BISDN) since it is considered > as a logical extension of ISDN." Martin de Prycker > Asynchronous Transfer > Mode - Solution for Broadband ISDN 3rd Edition - > 1995. page 17. > > > -Original Message- > > From: Phil Barker > [mailto:[EMAIL PROTECTED]] > > Sent: Friday, February 01, 2002 6:32 AM > > To: [EMAIL PROTECTED] > > Subject: What is the definition of Broadband ISDN > ? [7:34037] > > > > > > Its the 'Broadband' part I am getting at. > > > > Is it referring to PRI ISDN where 'Broad' is 23 or > 30 > > 64k channels ? So presumably narrowband is the > > opposite reffering to 2B. > > > > I'm reading up on ATM at the mo' and could do with > > clearing this up. > > > > Regs, > > > > Phil. > > > > __ > > Do You Yahoo!? > > Everything you'll ever need on one web page > > from News and Sport to Email and Music Charts > > http://uk.my.yahoo.com [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=34096&t=34037 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: What is the definition of Broadband ISDN ? [7:34037]
Good Gawd, I think the 'Penny may have finally dropped'. Lots and Lots of 2B+D sharing a Fat pipe ? So the narrowband would be for example Customer Premises to the cloud and the Broadband passing through the cloud, back to narrowband to the destination !!! I hope thats right because I like this idea !!! Phil. --- c1sc0k1d wrote: > I imagine your referring to IDSL (ISDN DSL). IDSL > is DSL at 144 kbps. IDSL > uses ISDN transmission coding, bundling together > both ISDN channels and > voice all on one circuit. IDSL does not use any kind > of dial up nor involve > per-call fees. For those that live too far for > regular DSL, IDSL may be the > only DSL option. IDSL tends to be priced at a rather > higher rate per bit of > speed, than any regular DSL. IDSL can still be a > very satisfactory solution > for data transmission compared to the alternatives > (modem), coping very well > with online gaming, and medium quality streaming > audio/video. > > > > > ""Phil Barker"" wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > Its the 'Broadband' part I am getting at. > > > > Is it referring to PRI ISDN where 'Broad' is 23 or > 30 > > 64k channels ? So presumably narrowband is the > > opposite reffering to 2B. > > > > I'm reading up on ATM at the mo' and could do with > > clearing this up. > > > > Regs, > > > > Phil. > > > > __ > > Do You Yahoo!? > > Everything you'll ever need on one web page > > from News and Sport to Email and Music Charts > > http://uk.my.yahoo.com [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=34064&t=34037 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
What is the definition of Broadband ISDN ? [7:34037]
Its the 'Broadband' part I am getting at. Is it referring to PRI ISDN where 'Broad' is 23 or 30 64k channels ? So presumably narrowband is the opposite reffering to 2B. I'm reading up on ATM at the mo' and could do with clearing this up. Regs, Phil. __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=34037&t=34037 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Cat2924 sending out broadcast message [7:34024]
Version 4:
HLEN = 5: Normal IP Header (5 losts of 32 bits)
Service Type 0: Normal.
Total Length = 328 bytes. Thus data length = 308
bytes.
Identification = 51514. Flags & Offset = 0.
TTL = 255.
Protocol 17: UDP.
Header checksum 0xf16a.
Source IP : 0.0.0.0
Dest IP : 255.255.255.255 b/cast
Src Port 68: bootp client
Dest Port 67: bootp server
Message Length = 308 (length - IP header)
No Checksum:
4500 0148 c93a ff11 f16a
0044 0043 0134 0101 0600
a3c6
0010 0b3c 3580
Bootp client to server.
Looks like because it has no source address 0.0.0.0,
it is trying to find it via a bootp server. I think
this operates like RARP except it is routable !!!
Not totally sure though.
Regards,
Phil.
--- Tay Chee Yong wrote: > Hi
all,
>
> Just like to enquire some issue regarding Catalyst
> 2924
>
> I have a pretty old Catalyst 2924 (C2900XL-H-M)
> switch in my office running
> IOS Version 11.2(8)SA3, however, it seems that the
> switch is constantly
> sending out broadcast messages as captured by
> tcpdump.
>
> 17:14:51.053952 0:10:b:3c:35:80 Broadcast ip 342:
> 0.0.0.0.bootpc >
> 255.255.255.255.bootps: secs:41926 [|bootp]
> 4500 0148 c93a ff11 f16a
> 0044 0043 0134 0101 0600
> a3c6
> 0010 0b3c 3580
>
>
>
> I did not configure any IP address on Vlan 1 on the
> switch, but I did
> segment the switch to contain 2 more vlans (Vlan 2,
> 3) However, I also have
> some machines residing on Vlan 1.
>
> However, the broadcast problem disappear after I
> move out the vlan1
> machines into another newly created Vlan (vlan 4),
> after I had shutdown
> Interface Vlan 1.
>
> Can anyone care to enlighten me? Thanks.
>
> Regards,
> Cheeyong
[EMAIL PROTECTED]
__
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CMIP rfc 1189 [7:34028]
'C' Common. Doh. Phil. __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=34028&t=34028 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Anyone know what udp port 164 is? [7:33991]
I seem to remember something about CMIP. Sounds like an OSI defined management protocol much like SNMP. C Management Information Protocol. Hmmm, cannot remember what 'C' stands for. Phil. --- Sean Knox wrote: > I have a host spitting out a UDP packet to > 255.255.255.255, port 164 > occasionally. I checked out the IANA port and found: > > cmip-agent 164/udpCMIP/TCP Agent > > Anyone know what this is? > > -Sean [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=34027&t=33991 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Totally OT : Was there a man on the moon ? [7:33465]
What magnification of telescope would I need though to prove it. For as far as they are concerned its in a studio etc, blah. Phil. --- Ole Drews Jensen wrote: > Just a thought... > > If they did not land on the moon - who placed the > american flag there? > > Ole > > ~~~ > Ole Drews Jensen > Systems Network Manager > CCNP, MCSE, MCP+I > RWR Enterprises, Inc. > [EMAIL PROTECTED] > ~~~ > http://www.RouterChief.com > ~~~ > NEED A JOB ??? > http://www.oledrews.com/job > ~~~~~~~ > > > -Original Message- > From: Phil Barker > [mailto:[EMAIL PROTECTED]] > Sent: Monday, January 28, 2002 12:15 PM > To: [EMAIL PROTECTED] > Subject: Totally OT : Was there a man on the moon ? > [7:33465] > > > Sorry for this waste of b/w but I have two discening > friends who keep insisting that man never went to > the > moon, instead it was a big stage act. The shadows > are > in the wrong place blah, blah, blah. Unfortunately > they cannot expand on the shadow theory since they > don't understand it themselves. They just Want to > believe in an American etc conspiracy. G. > > My initial defence that Man has landed on the moon > was > based on the fact that Russia didn't make any > complaints which I'm sure they would have done. This > has been unfortunately dismissed by the same > argument > i.e propaganda, America etc would not allow the > reporting of such info-. > > Okay, now I need Physics to help. > My hunch is that the radio signal of the famous > speech > by Neil Armstrong would be sent on a certain > frequency > which could only be picked up by a receiver set to > the > same frequency, and it would be possible to > calculate > the distance from Neil to Earth. Not done physics > for > 20 years so I'm struggling here. > > OR could this be simulated in a LAB to make the > distance of Neil to Stage appear to be the distance > to > the moon ? > > Any other possibilities more than welcome to shut > these muppets up. > > Phil. > > __ > Do You Yahoo!? > Everything you'll ever need on one web page > from News and Sport to Email and Music Charts > http://uk.my.yahoo.com [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=33484&t=33465 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Totally OT : Was there a man on the moon ? [7:33465]
Sorry for this waste of b/w but I have two discening friends who keep insisting that man never went to the moon, instead it was a big stage act. The shadows are in the wrong place blah, blah, blah. Unfortunately they cannot expand on the shadow theory since they don't understand it themselves. They just Want to believe in an American etc conspiracy. G. My initial defence that Man has landed on the moon was based on the fact that Russia didn't make any complaints which I'm sure they would have done. This has been unfortunately dismissed by the same argument i.e propaganda, America etc would not allow the reporting of such info-. Okay, now I need Physics to help. My hunch is that the radio signal of the famous speech by Neil Armstrong would be sent on a certain frequency which could only be picked up by a receiver set to the same frequency, and it would be possible to calculate the distance from Neil to Earth. Not done physics for 20 years so I'm struggling here. OR could this be simulated in a LAB to make the distance of Neil to Stage appear to be the distance to the moon ? Any other possibilities more than welcome to shut these muppets up. Phil. __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=33465&t=33465 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Poison Reverse and RIP [7:33402]
Where did you find this info ? Cisco DOES support poison reverse in their IP RIP implementations. They set the metric to infinity or 16. I have verifified this by lab using a sniffer. See : http://www.cisco.com/univercd/cc/td/doc/product/aggr/vpn5000/5000mgr/mgrref/iproutg.htm#xtocid113217 or try www.cisco.com and search for 'poison reverse' Phil. --- Pierre-Alex GUANEL wrote: > Cisco does not seem to support poison reverse for > RIP and RIP version 2. > > Do you know network vendors who do? > > Pierre-Alex [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=33419&t=33402 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: DTE/DCE definitions ? CCAI woes. [7:32924] (Longish) [7:33008]
Thanx for bruising my brain Diffy Phil. --- Diffy De Villiers wrote: > Just to add on to what Hal said: > > The terms DTE/DCE are used at both layer1 and layer2 > of the OSI model > and at both layers they represent different > entities. > > A layer1 DTE is an acronym for a physical Data > Terminal Equipment (i.e. > a device which physically controls interface signals > such as DTR, RTS > and TxD on a serial interface). > > A layer1 DCE is an acronym for Data Communications > Equipment (i.e. a > device which controls interface signals such as DSR, > CTS, DCD and RxD > and signal timing). > > A layer2 DTE is an acronym for a logical (not > physical) Data Terminal > Equipment (i.e. a device which generate frames in > the format of a DTE > device as laid out in the protocol specification - > for example a LAPB > DTE always generates commands with an address-field > value of 1). From a > WAN service provider's point of view, the DTE > devices are normally the > equipment connected to the modem at the customer's > premises (normally > the router's serial interface). > > A layer2 DCE is an acronym for a logical Data > Circuit-terminating > Equipment (i.e. a device which generate frames in > the format of a DCE > device as laid out in the protocol specification - > for example a LAPB > DCE always generates commands with an address-field > value of 1). From a > WAN service provider's point of view, the DCE > devices are normally the > WAN switches at its premises. > > To now really confuse things, picture the following > serial link: > - Router at Customer Premises connected to a Modem > - Modem at Customer Premises connected to Modem at > Service Provider. > - Modem at Service Provider connected to WAN Switch. > > At layer 1, the router and WAN switch are known as > DTEs, the two modems > are the DCEs. > > At layer 2, the router is a DTE and the WAN switch > is a DCE (see above > definitions). In other words the WAN switch is both > a DTE (layer 1) and > a DCE (layer 2). And who said networking is easy > :-). > > NOTE that the term DTE refers to Data Terminal > Equipment at both layer1 > and layer2, but the term DCE represents different > acronyms at layers 1 > and 2. > > I hope this adds some light to the confusion!!! > > Kind Regards > > Diffy > > >>> "Phil Barker" 01/23/02 05:29PM >>> > Thanks for your answer Hal, > > I'm back on track now. > > Regards, > > Phil. > > --- "Logan, Harold" wrote: > > Phil, > > > > You and your students are falling into a trap > that's > > caused confusion > > for a lot of people, especially netacad students. > > Your student is > > correct though; normally all devices on the LAN > side > > are DTE equipment. > > The terms DTE and DCE only apply on the WAN side > of > > things... if you try > > to apply that terminology on the LAN side, you're > > bound to confuse > > yourself. Add to that, the netacad curriculum only > > tells you the > > definition of DCE and DTE equipment; it doesn't > tell > > you how the > > terminology gets applied. I personally don't like > > the fact that semester > > 2 tests students on their knowledge of WAN > > topologies and terminologies, > > when that material is really covered in semester > > 4... but that's a > > different soap box. > > > > The traditional workgroup LAN switch doesn't > really > > have a place in the > > WAN scheme of things. I know the curriculum will > > occasionally reference > > switches and DCE in the same sentence; in every > case > > I've seen so far, > > they're actually referring to WAN switches, not > LAN > > switches. There are > > probably several readers on the list who are > reading > > this and cringing, > > and thinking of any number of LAN switches that > also > > connect to a WAN > > service, but that's a bit beyond the CCNA level of > > understanding... it's > > definitely beyond the NetAcad semester 2 level. > Here > > you're sometimes > > better off omitting data for now and applying the > > KISS principle. LAN > > switches are DTE equipment, but they don't play an > > important role on the > > WAN side. > > > > As for connecting routers, hubs, switches, and > > workstations, I know it's > > tempting to call routers and computers DTE and to > > call switches and hubs > > DCE.
Setting of NOT filters using NG Sniffer ? [7:30824]
Hi group, I want to define a filter that captures all packets except ARP and HTTP. I've tried the advanced settings in NG Sniffer "define filter" clicked on ARP for e.g and then tried the 'ADD NOT' attribute under "data pattern". But I'm getting knowhere fast !!! Any ideas if this is possible ? Phil. __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=30824&t=30824 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Sniffing my broadband connection to my ISP ??? [7:30689]
Thanx for all the posts. Didn't see the posts yesterday so could'nt take part. The Server may have been throwing a wobbly. Yes, I'm on cable (Surfboard 4100). Just getting my head around not being alone and sharing the broadcast domain. My setup is PC->Hub wrote: > I read up on it. It appears to have been developed > for beneficial purposes > but is also a hacker tool. The written material says > its a set of tools > actually The relevant one uses ARP, not ICMP. (There > was no mention of ICMP > being used.) It sends an ARP reply for the IP > address of the default > gateway. Actually it can send an ARP reply for > anything. There's no need to > be multihomed, but IP forwarding must be enabled or > you'll get caught, as > you say, (plus you wouldn't see anything because the > target would loose its > connections). > > Priscilla > > At 07:43 PM 1/2/02, Steven A. Ridder wrote: > >Dsniff uses icmp default gateway redirects (the > ICMP message that tells > >hosts that a differnt router has a better path to > the destination network). > >This will automatically make the user's PC redirect > all traffic to your PC > >dynamically (the client never knows about it), > because he thinks you are a > >router and that you'd be a better default gateway. > You just have to have a > >multihomed PC because you still need to forward the > traffic to the > >destination, otherwise you'll get caught. > > > >It's a pretty good hacking tool and has been ported > from *nix to Windows for > >years. Makes switches just like hubs again. Use > this with L0phtCrack and > >you can get NT PW's, etc.. > > > > > >""Priscilla Oppenheimer"" wrote in message > >[EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > > At 06:42 PM 1/2/02, Steven A. Ridder wrote: > > > >As everyone else has said, this is normal for a > shared access netowrk. > >Look > > > >for routing protocol updates and other things > as well . On ATT's > > > >cable-modem network you can see the ospf hello > updates, who the DR and > >BDR > > > >is and other things. > > > > > > Yep, that's true. > > > > > > So now we have synergy between this thread and > the Passive Interface > > > thread! I like that! ;-) > > > > > > Making the cable interface a passive interface > seems like a good idea for > > > many reasons, including security and not just > bandwidth usage. (The > > > bandwidth used by Hellos has gotta be pretty > minimal!) > > > > > > >It can be fun. > > > > > > A lot of people report seeing other broadcasts > too, including NetBIOS, > > > AppleTalk, etc. It's kind of scary. > > > > > > >Try dsniff or some other program and > > > >you can see all the traffic on that network :) > Be careful though > >because > > > >you will probably get slammed and don't forget > to reroute the traffic > >back > > > >out or else someone will know something is > wrong. > > > > > > What's dsniff? What does that let you see? And > what's this about having > to > > > reroute? Can you tell us more? THANKS > > > > > > Priscilla > > > > > > > > > > > > > > > >""Phil Barker"" wrote in message > > > >[EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > > > > Hi Group, > > > > > I have been sniffing my broadband > connection to > > > > > my ISP today and have a few questions. > > > > > > > > > > My main gripe is that I'm being sent > around 100 > > > > > Arp requests per minute, which obviously I > cannot > > > > > resolve. These ARP requests are all > originating from > > > > > my default G/W at the ISP trying to resolve > MAC > > > > > addresses of various users. Can anyone > confirm if this > > > > > is usual or unusual. I cannot see this being > correct > > > > > since if I set my router up to be one of > these IP > > > > > addresses I can resolve it to my MAC address > Eth 0 > > > > > int' or any other mac-address for that > matter. > > > > > > > > > > They also send me DHCP requests, IGMP > requests > > > > > for group 224.0.0.1 (Which I wish I could > jo
Sniffing my broadband connection to my ISP ??? [7:30689]
Hi Group, I have been sniffing my broadband connection to my ISP today and have a few questions. My main gripe is that I'm being sent around 100 Arp requests per minute, which obviously I cannot resolve. These ARP requests are all originating from my default G/W at the ISP trying to resolve MAC addresses of various users. Can anyone confirm if this is usual or unusual. I cannot see this being correct since if I set my router up to be one of these IP addresses I can resolve it to my MAC address Eth 0 int' or any other mac-address for that matter. They also send me DHCP requests, IGMP requests for group 224.0.0.1 (Which I wish I could join) but cannot and lots of their private address information via the above mentioned ARP's. I also captured an attemt at an inbound TCP connection on a dynamic port which my router RST, thankfully. Are they wasting my B/W ? Thanx, Phil __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=30689&t=30689 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: ccna exam info [7:30657]
If its braindumps your after your in the wrong place. For study guides try www.certificationzone.com. The archives on groupstudy.com will give you all the info you need !!! Phil. --- eli wrote: > Hey group- > > I am interesting in taking the CCNA exam . I need > web site information or > links witch give example tests , Brain dumps , > study guides , lab practices & more ... > > thank you all > > HAPPY NEW YEAR > > Eli Aviv [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=30660&t=30657 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Catalyst 2926T Problem More info [7:30034]
Then basically you have a crackered port. Phil. --- Barbee Jason wrote: > Right, this is the only document I can find related. > I have tried "reset 1", which reboots the switch. No > improvement. [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=30044&t=30034 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Catalyst 2926T Problem More info [7:30034]
>From cisco.com Port Aggregation Protocol/EtherChannel Messages This section contains the switch Port Aggregation Protocol (PAgP) and EtherChannel messages. PAGP-3-CONFPORTCHNLFAIL: Failure = [dec] in configPortChannel for mNo/pNo = [dec]/[dec] Explanation This message indicates that the system was unable to configure the channel properly; [dec] is the return status, and [dec]/[dec] is the module number/port number. Recommended Action Try to reset the failing ports. If the message reappears, contact your technical support representative. --- Barbee Jason wrote: > The buzzing noise was one of the power supplies, I > switched to the second > RPS and the sound is much less, but I can still hear > a slight buzzing noise > during acitivity. > Both uplink ports work when connected to a device. I > can transmit data > between computers. > On the console I get the message referenced about > every 3 seconds output to > the console. > 2001 Dec 24 12:48:04 > %PAGP-3-CONFPORTCHNLFAIL:Failure = -1 in > configPortChannel for mNo/pNo = 1/2 > -Jason [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=30040&t=30034 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: ICMP Error [7:30030]
RFC 1256 looks interesting. >>> SNIP This document specifies an extension of the Internet Control Message Protocol (ICMP) to enable hosts attached to multicast or broadcast networks to discover the IP addresses of their neighboring routers. >>> END SNIP --- Cisco Breaker wrote: > Hi All, > > I have a client that installed a Linux NIS server > which is working with > broadcasts. That server is connected to cisco 4908. > Server IP is > 192.168.5.2. He is saying that when NIS server > starts to work all clients > and NIS server is receiving a message at below, > > " 192.168.5.2 sent an invalid ICMP error to > broadcast" > > What is the meaning of this message, I searched on > cisco but didnt find > anything. Can it be because of "no ip > directed-broadcast" command on the > interface. > > Any help will be appreciated? > > Best regards, [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=30035&t=30030 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: ICMP Error [7:30030]
Have you got a sniffer to trace the error ? It would be interesting to see the packet in question since ICMP has 20 ish different error codes. The ICMP error should not be broadcast either, it should be unicast back to the originator of the erroring device. Off the top of my head I cannot think of a purpose for b/cast ICMP. I'll have a dig around in the RFC to confirm. Phil. --- Cisco Breaker wrote: > Hi All, > > I have a client that installed a Linux NIS server > which is working with > broadcasts. That server is connected to cisco 4908. > Server IP is > 192.168.5.2. He is saying that when NIS server > starts to work all clients > and NIS server is receiving a message at below, > > " 192.168.5.2 sent an invalid ICMP error to > broadcast" > > What is the meaning of this message, I searched on > cisco but didnt find > anything. Can it be because of "no ip > directed-broadcast" command on the > interface. > > Any help will be appreciated? > > Best regards, [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=30033&t=30030 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Redistribute connected with RIP ? [7:29667]
No, I still don't get it !!! If I have to type in all the directly connected networks via the network statement then what does redistribute connected actually do ? Regs, Phil. --- John Neiberger wrote: > The network statement in RIP does not specify which > networks to > advertise, it specifies which interfaces participate > in RIP. If you > don't have a network statement, no networks will be > advertised because > no interfaces are running RIP. > > HTH, > John > > >>> "Phil Barker" 12/19/01 12:01:40 PM > >>> > Hi all, >Just set up a simple RIP network and am trying to > redistribute connected networks without directly > advertising a network through the network statement. > > The router won't allow me ? If I advertise a network > with redistribute connected and then take the > network > out of the advertisements then the 'router rip', > 'redistribute connected' is still in the config but > it > doesn't do anything i.e 'debug ip rip' shows no > updates. > > Does anyone know why this is ? > > Regards, > > Phil. > > > __ > Do You Yahoo!? > Everything you'll ever need on one web page > from News and Sport to Email and Music Charts > http://uk.my.yahoo.com [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=29679&t=29667 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Redistribute connected with RIP ? [7:29667]
I see your point John its just that I expected the router to look at its directly connected interfaces and to advertise those routes saving me from typing them in. Cheers, Phil. --- John Neiberger wrote: > The network statement in RIP does not specify which > networks to > advertise, it specifies which interfaces participate > in RIP. If you > don't have a network statement, no networks will be > advertised because > no interfaces are running RIP. > > HTH, > John > > >>> "Phil Barker" 12/19/01 12:01:40 PM > >>> > Hi all, >Just set up a simple RIP network and am trying to > redistribute connected networks without directly > advertising a network through the network statement. > > The router won't allow me ? If I advertise a network > with redistribute connected and then take the > network > out of the advertisements then the 'router rip', > 'redistribute connected' is still in the config but > it > doesn't do anything i.e 'debug ip rip' shows no > updates. > > Does anyone know why this is ? > > Regards, > > Phil. > > > __ > Do You Yahoo!? > Everything you'll ever need on one web page > from News and Sport to Email and Music Charts > http://uk.my.yahoo.com [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=29677&t=29667 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Redistribute connected with RIP ? [7:29667]
Hi all, Just set up a simple RIP network and am trying to redistribute connected networks without directly advertising a network through the network statement. The router won't allow me ? If I advertise a network with redistribute connected and then take the network out of the advertisements then the 'router rip', 'redistribute connected' is still in the config but it doesn't do anything i.e 'debug ip rip' shows no updates. Does anyone know why this is ? Regards, Phil. __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=29667&t=29667 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RFC 1058 RIP ? [7:29192]
Hi all, Just reading the above RFC and have come across the following snag. Looking at the packet format it states that "The portion of the datagram from 'address family identifier' through 'metric' may appear upto 25 times" On the next page it also states that "The maximum datagram size is 512 octets. This includes only the portions of the datagram described above. It does not count the IP or UDP headers." Now, from the 'address family identifier' to the 'metric' field inclusive of each is 20 octets, which when we have 25 entries yields 25 x 20 or 500 octets. Add on the 4 octets from the 'command' field to the 'must be zero' field and we have 504 octets only. Obviously if we add the UDP header we can get 512 octets. So something appears to be amiss or am I missing something ? Phil. __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=29192&t=29192 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
IOS 12.0(4) Bugs ? [7:28845]
Has anyone got a cisco link for bugs in the above IOS ? I'm having difficulty locating on cisco.com. specifically relating to 'sh sessions' and 'telnet to vty 0 4. I can telnet the routers without a password or login. Regards, Phil. __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=28845&t=28845 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RFC 768 UDP ? [7:26283]
Just been reading the above RFC. To quote "Checksum is the 16-bit one's complement of the one's complement sum of a pseudo header of information from the IP header, the UDP header, and the data, padded with zero octets at the end (if necessary) to make a multiple of two octets. The pseudo header conceptually prefixed to the UDP header contains the source address, the destination address, the protocol, and the UDP length. This information gives protection against misrouted datagrams. This checksum procedure is the same as is used in TCP." This business about a pseudo header is bothering me. If the IP header has already had a checksum that runs across the source and destination address then why does UDP do this again ? It also creates an obvious dependancy of UDP on IP also. Another question about padding making a multiple of two octets. I seem to remember Novell IPX requiring even numbered packets (2.X) maybe. Is this something to do with 16 bit processors working more efficiently with an even packet sizes i.e reading two bytes at a time was less expensive processor-wise than reading an odd byte ? Phil. __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=26283&t=26283 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
CertificationZone OSPF I white paper ? [7:23885]
Just finished reading this white paper by Howard and have the following points to raise. Page 8 (A4 wise) last line states : "OSPF does not use a transport protocol like UDP or TCP, but runs directly over the Data Link Layer". This looks like a typo as it runs over IP on port 89. Page 13 presents a table of LSA's type and purpose. Type 2 (network) states that this LSA can be generated by any router. With reference to Doyle, Caslow and RFC 1247 it appears that this LSA can only be generated by the DR for multi-access networks. I appear to have confirmed this also in my lab. Referring to the same table : Type 4 (ABR) states that the contents route to 'Area Border Router' whereas Caslow and RFC 1247 states that they route to AS Boundary routers. Phil. Nokia Game is on again. Go to http://uk.yahoo.com/nokiagame/ and join the new all media adventure before November 3rd. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=23885&t=23885 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: network programming? [7:23377]
I know that if you want to write for Unix , you should learn C very well, but how about if you wanna code for routers and switches or embedded systems. Should I focus on C++ more so than C??? >>> END If you where coding for routers or switches it is more likely that you would need to specialise on a particular networking area e.g IP routed versus routing protocols or even down to BGP versus OSPF. Your C knowledge would probably be of more importance than C++ since Unix is written in C and most Router/Switch devices are written in C. You should be aware though, that while this type of work you are considering is very interesting from an Engineering perspective, it can also result in your key skills being so specialised that you may find it difficult to work in any other programming field i.e Application Development in general. I fell into this trap myself writing protocol analysis software. When I looked elsewhere for different types of work companies couldn't understand what I had done and found the work odd compared to those who worked in banks etc shuffling VB around for twice as many bucks. HTH, Phil. --- Cisco KIdd78 wrote: > Here is my story I have been taking 'C ' > programming for the last 2 > months at the local college and I need some advice > on what languages I > should learn, or master, so I can become a network > programmer? To me a > network programmer would be someone that either > programs network > hardware, such as routers and switches, or possibly > someone that writes > drivers for network products, or creates network > management software, or > something along those lines, that is OS independent. > I know that if you > want to write for Unix , you should learn C very > well, but how about if > you wanna code for routers and switches or embedded > systems. Should I > focus on C++ more so than C??? I want to go into an > area where job > stability is important. I don't necessarily want to > work for the same > company most of my life I just want to learn a > language ,or two, that are > relevant, so that if I need to leave I can get a job > working on similar > projects. Thanks for any input! :) > > > > Get your FREE download of MSN Explorer at > http://explorer.msn.com [EMAIL PROTECTED] Nokia Game is on again. Go to http://uk.yahoo.com/nokiagame/ and join the new all media adventure before November 3rd. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=23395&t=23377 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Slow wan link. TCP traffic "ok", UDP not okay. Please help! [7:23361]
To quote Douglas Comer : "An Application Program that uses UDP accepts full responsibility for handling the problem of reliability, including mesage loss, duplication, delay, out-of-order delivery and loss of connectivity. Unfortunately, application programmers often ignore these problems when designing software. Furthermore, because programmers often test network software using highly reliable, low delay local area networks, testing may not expose potential failures. Thus, many application programs that rely on UDP work well in a local environment but fail in dramatic ways when used in a larger TCP/IP internet." The TFTP program isn't designed to tranfer files over such a large network. If the programmers wrote reliability into the TFTP software they would basically be copying the TCP code into the TFTP code, of which there is no point since TCP exists. TFTP is thus used over reliable media like LAN's and FTP over either. HTH, Phil. --- "Ouellette, Tim" wrote: > Hey All. I was wondering if someone could help me > out with a problem i'm > working on. It's very weird to me and I can't find > any reason why this may > be happening other than possible a Queuing issue. > Please comment. > > I've done some testing to show the response > issues from spikinisse > to an auburn hills tftp/ftp box. When a 9 meg > file is copied from one of the 6509's in > Spijkenisse using tftp we > see a speed of 4k/sec (9041904 bytes copied in > 2251.956 secs (4016 > bytes/sec) > However, when I ftp'd a 2meg file from a server in > Spijkenisse to > the same server in Auburn Hills, I see a speed of > 166k/sec (2024013 bytes > sent in 12 > seconds (166.12 Kbytes/s) Seeing as in > Spijkinisse it is > approximately 8pm and they have 4 E1's, there should > not be an issue with > over-utilization. > It intrigue's me as to how a UDP based application > (tftp) can have > such a ridiculously slow speed of 4k/sec and a TCP > based application (ftp) > has an > average speed (considering 4 e1's) of 166k/sec. > > Spikinisse has a group of E1's to the cloud and our > site in Auburn > Hills has a full DS3 to the cloud. > > Spik is in the Netherlands, and Auburn Hills is in > the US. Any more > information I need to provide? [EMAIL PROTECTED] Nokia Game is on again. Go to http://uk.yahoo.com/nokiagame/ and join the new all media adventure before November 3rd. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=23361&t=23361 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
TCP 3 way Handshake ? [7:18794]
I thought that would grab your attention Priscilla hehehe. I need to grant Terminal Service Access from anyone (internet) to a well known TCP port of a destination IP Server address x.x.x.x This is implemented as a permit on the PIX F/W. My problem is that I can telnet that well known port and the Server generates an Error Message "Error : Must Authenticate first." Obviously, I am open to a denial of service attack. I am attempting to rectify the Server Message issue by displaying a blank screen for this instance. However, my real question is : When I telnet the well known port, I can see the 3-WAY-HANDSHAKE with my Sniffer. How long will the connection be established for ? My gut feeling is that this will be vendor dependant as either side can Reset or Tear down the TCP connection, but a rough idea would do. Phil. Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=18794&t=18794 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Friday Funnies o/t [7:18072]
**WARN AS MANY PEOPLE AS YOU CAN.** If you receive an email entitled "Badtimes," delete it immediately. Do not open it. Apparently this one is pretty nasty. It will not only erase everything on your hard drive, but it will also delete anything on disks within 20 feet of your computer. It demagnetizes the stripes on ALL of your credit cards. It reprograms your ATM access code, screws up the tracking on your VCR and uses subspace field harmonics to scratch any CD's you attempt to play. It will program your phone auto dial to call only 0055 numbers. This virus will mix antifreeze into your fish tank. It will drink ALL your beer. FOR GOD'S SAKE MAN, ARE YOU LISTENING? It will leave dirty socks on the coffee table when you are expecting company. It will replace your shampoo with Nair and your Nair with Rogaine, all the while dating your current boy/girlfriend behind your back and billing their hotel rendezvous to your Visa card. It will cause you to run with scissors and throw things in a way that is only fun until someone loses an eye. It will rewrite your backup files, changing all your active verbs to passive tense and incorporating undetectable misspellings which grossly change the interpretations of key sentences. If the "Badtimes" message is opened in a Windows 95/98 environment, it will leave the toilet seat up and leave your hair dryer plugged in dangerously close to a full bathtub. It will not only remove the forbidden tags from your mattresses and pillows,it will also refill your skim milk with whole milk. **WARN AS MANY PEOPLE AS YOU CAN.** And if you don't send this to 5000 people in 20 seconds you'll fart so hard that your right leg will spasm, shoot straight out in front of you,sending sparks, that will ignite onto the person nearest you. In case you are a blonde, this is a joke. _ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=18072&t=18072 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: RIF Note [7:16645]
Yes, Rossi is correct. Phil. --- "Wright, Jeremy" wrote: > For those of you studying for the CCIE written > (including myself) the Exam > Cram book states on page 68 that "A 1 bit indicates > the RIF is read left to > right, and a 0 is read right to left." In the Rossi > Paper it states "0 means > the RIF is read left to right, 1 means the RIF is > read right to left". > Obviously these contradict each other but I am going > to go with the Rossi > paper over Exam Cram unless I'm reading something > wrong. [EMAIL PROTECTED] Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=16677&t=16645 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Certificationzone White Paper ? [7:16354]
Just reading "Layer 2 Switching and Bridging" by Leigh Anne Chisholm. Cut-Through "Since the port does not wait to receive the CRC at the end 'if/of' the frame, it cannot determine the integrity of the data received" Happy with that. "Cut-through switches CAN perform a CRC check as the frame passes through the switch, keeping track of the number of bad frames the port receives". I'm Confused. I'm guessing that some form of CRC checksum can be calculated on the first X-bits of the frame before the cut-through process is allowed rather than the entire frame. Any ideas ? Phil. Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=16354&t=16354 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Cisco Cache Engine [7:16291]
I'm not convinced, although I believe ours has been set up badly. In fact I switched it off and got a faster connection. I would look deeper into it but I've got a PIX to play with before I leave. Can memory on a server be segmented off to deal with caching web hits ? I spoke with my mate, a Gold Partner and he was surprised we had installed it here, though he didn't say why. So I'm thinking they are not so popular ??? We were using WCCP v.1 though so I cannot speak for version 2. Phil. --- Sean Graham wrote: > We are looking to implement Cisco's Cache Engine, > and I would like to get > some of your views on it. > > Thanks, > > Sean. [EMAIL PROTECTED] Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=16300&t=16291 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Switching question [7:16284]
The ISP will screw you down to one IP address so you will have to NAT that adress to 2 or more different addresses using a router. Regards, Phil. --- newbie newbie wrote: > Hello all. > > I have a quick question. I am trying to connect to > the internet using a > switch. I have plug the ethernet cable into port 5 > and my lab tops are > connected to ports 1 and 3. How do i share the > connection using the switch? > I know this sounds trivial but I am a newbie at this > whole routing stuff. > > Please let me know > > Thanks > > James [EMAIL PROTECTED] Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=16289&t=16284 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: High cpu utilization [7:16268]
John, You'll need to post it inline can you provide a config ? Phil. --- John Kale wrote: > 4 routers in my company. 2rsm's and 2 3640's are > hitting 100% cpu > utilization every 40secs or so... > we run ip and ipx and the only thing that seems a > miss is the ipx forwarder > process which is pretty high on all 4 routers. this > is the same config we > have been using for monthsso its disturbing why > its freaking out now! > i'm including the output of the show proc cpu on one > of the routers. > any suggestions will be helpful as my job my depend > on this!!! > > regards, > > John > > _ > Get your FREE download of MSN Explorer at > http://explorer.msn.com/intl.asp [EMAIL PROTECTED] Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=16271&t=16268 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Why Should the Binary Math Method Be Used to Subnet [7:15332]
>>>SNIP With a little bit of practice, it's dependable, reliable, and takes an amazingly short time to boot up. ;-) >>>END SNIP I've been known to take upto 12 hours to boot up when I've got too much blood in the alcohol stream. Phil. --- "Wilson, Bradley" wrote: > Are you allowed to take a subnet calculator into > *any* certification test? > If your network is crashing and (for some reason) > you need to do some quick > binary math to solve the problem, do you really have > time to wait to run > back to your desk and launch (or perhaps even > download first) a subnet > calculator program? Will subnet calculators know > enough to ask the > questions that you don't know to ask regarding a > given situation? > > In my opinion, the only calculator one should depend > on for everyday binary > math problems in networking should be the one > located between one's ears. > With a little bit of practice, it's dependable, > reliable, and takes an > amazingly short time to boot up. ;-) > > BJ > > > > -Original Message- > From: Ken [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, August 08, 2001 12:30 PM > To: [EMAIL PROTECTED] > Subject: Why Should the Binary Math Method Be Used > to Subnet [7:15306] > > > This is a study group so I have a question for which > I need some education. > I am not looking for a flame war, just education. > The question I have is of > what use is the binary math method of subnetting as > compared to just using a > program that does subnetting? If the point to the > exercise is to produce a > plan for subnetting that can then be entered into > each device on the network > or into a DHCP server setup, what else is achieved > by doing this manually? > It seems to me that the point is not the journey, > but the arrival at the > destination. Indeed arrival as quickly as possible, > with the least source of > error. As Cisco even says; "The purpose of this tool > is to provide a way to > calculate IP subnetting which is fast, easy, and > error free. Doing such > calculations manually is time consuming and > susceptible to common > mathematical mistakes, especially in conversions > between binary and decimal > numbers." So what is it I am not understanding? [EMAIL PROTECTED] Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=15332&t=15332 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Why Should the Binary Math Method Be Used to Subnet [7:15325]
Why learn how to spell when we can look words up in a dictionary ? Why learn mental arithmetic when we can use a calculator ? Why learn about '1' and '0', its just the fundamental basis of modern computing ? Therefore why learn sunetting via the binary method ? What happens on that really big job your doing for $200/hr and your subnet calculator breaks but you still need to come up with the goods ? Answer : I get your job. Phil. --- Ken wrote: > This is a study group so I have a question for which > I need some education. > I am not looking for a flame war, just education. > The question I have is of > what use is the binary math method of subnetting as > compared to just using a > program that does subnetting? If the point to the > exercise is to produce a > plan for subnetting that can then be entered into > each device on the network > or into a DHCP server setup, what else is achieved > by doing this manually? > It seems to me that the point is not the journey, > but the arrival at the > destination. Indeed arrival as quickly as possible, > with the least source of > error. As Cisco even says; "The purpose of this tool > is to provide a way to > calculate IP subnetting which is fast, easy, and > error free. Doing such > calculations manually is time consuming and > susceptible to common > mathematical mistakes, especially in conversions > between binary and decimal > numbers." So what is it I am not understanding? [EMAIL PROTECTED] Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=15325&t=15325 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: eigrp:null returned from malloc'ing dual-peertype [7:15021]
Eric, Top of my head. Malloc is a 'C' function that allocates memory on the fly and it has failed to do so. I expect you have found a bug in some old eigrp code as the latest version 11.3 and up tend to be more stable. What version of IOS did this occur on. Check Cisco's website for bugs and caveats for the version you are using for EIGRP. Check the next version also for bug fixes in EIGRP. HTH, Phil. --- Eric ding wrote: > what does this messgae mean? [EMAIL PROTECTED] Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=15025&t=15021 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: EIGRP - Stuck in Active [7:14803]
I wouldn't recommend adjusting any timers since this will only mask the SIA problem. You really need to try to find the source of the SIA routes. One obvious place to look is AS5200 Access servers where remote users are running PPP. Have you got any /32 addresses in your routing tables ? If you have you may need to summarize these on your access servers. HTH, Phil. --- Thomas wrote: > Hi All, > > I have EIGRP implemented on NBMA of Frame Relay and > occasionary run into the > Stuck-in-active. Cisco document suggests to > increase the "timers > time-active" of the EIGRP. I wonder what is the > default time period (in > minute) for this "time-active"? Any suggestion what > time should I change it > to? Thanks All in advance! > > Thomas [EMAIL PROTECTED] Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=14804&t=14803 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: X.25 interface maximum rate [7:14146]
I don't believe that there is a theoretical upper limit. X.25 should work fine at 2Mbs. However, I have heard that you have to be very careful when configuring both ends to make sure that all parameters match such as window sizes etc. Regards, Phil. --- "[EMAIL PROTECTED]" wrote: > Hello Group, > > Can somebody tell me the maximum speed an X.21 > interface can suport or > a URL that has detail information on this. I have an > X.21 interface > connection to a 2MB link and it would flap after > about 48hrs of > operation with a lot of input, CRC errors. > > A Bit Error Rate test has been performed on the link > and the link > quality was confirmed to be good. > > Please help!!! > > Regards, > > > Preye. [EMAIL PROTECTED] Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=14149&t=14146 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Backup for an RSP2 module (R4700) ? [7:13939]
Hi Group, If you wished to give backup to a RSP2 (R4700) module what would be the equivalent external Router and what would be the Processor speed ? Regards, Phil. Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=13939&t=13939 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Multiple EIGRP Processes [7:13774]
>>> SNIP Well, in my situation, as soon as eigrp AS 2 is implemented on B and C, B loses all the routes advertised by C until I clear the eigrp neighbors. At that point this begins to work correctly. >>> END SNIP. I don't think you've got anything wrong here, but you maybe just pushing EIGRP a bit to far without outside assistance i.e Clearing the neighbor table. Why not try taking off AS 1 first and then add AS 1 and AS 2 to Router B. Try fiddling different combinations. My understanding is that initially i.e before you add AS 2 the multicast Hello packet will just contain AS 1 and when you add AS 2 to B the Hello packet should contain 2 entries as opposed to two separate hello packets. (If you get my meaning) !!! Regards, Phil. --- John Neiberger wrote: > Let's say I have the following topology: > > A > | > | > B--C > | > | > D > > Routers A, B, and C are participating in EIGRP AS 1, > so those three > routers are aware of everything except routes on the > other side of D. > Then, I add EIGRP AS 2 to routers B, C, and D but > not A. It's my > understanding that Router A will only be aware of > the directly connected > links of routers B and C, and router D will only > know of the directly > connected links of routers B and C. Router A should > not be aware of any > link on router D except for the B--D link. > > Now, B has two topology tables with some duplicate > routes learned from > router C, or at least it should. As soon as I turn > on eigrp AS 2 on B > and C, no routing information should be lost, > correct? If Router C is > advertising a given subnet via eigrp AS 1 and AS 2, > router B should > always be aware of it no matter what, right? > > Well, in my situation, as soon as eigrp AS 2 is > implemented on B and C, > B loses all the routes advertised by C until I clear > the eigrp > neighbors. At that point this begins to work > correctly. > > Then, when I removed eigrp AS 2--leaving eigrp AS > 1-- on B and C, those > routes disappear again! As before, clearing the > eigrp neighbors > resolves the issue but I don't understand why this > would be happening. > I believe it's a bug but I'm not sure. There are > some bugs related to > routes being in the topology table that aren't being > inserted into the > routing table, but I don't know for certain those > apply here. > > Is my thinking correct here or am I missing > something? > > Thanks, > John > > p.s. Don't ask why I'm doing this, just go with me > on it, okay?? ;-) [EMAIL PROTECTED] Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=13851&t=13774 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
sh system command ? [7:13330]
Hi, The 'show system' command on a Cat 5500 contains a current traffic level and a peak level. How long are these values valid for. e.g is the current traffic value over a five minute period ? Is the peak value from when the Supy is booted up ? PS : checked cisco.com but cannot find an answer. Regards, Phil. Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=13330&t=13330 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Packet Sizes [7:12826]
Guy, it would yield 726 only if you were using an Ethernet SNAP frame. For Ethernet 802.3 (6 byte destination + 6 byte source (mac addresses) + 2 byte length field + 1 byte SSAP + 1 byte DSAP + 1 byte control + 700 payload + 4 byte CRC) = 721. For Ethernet Raw (6 byte destination + 6 byte source (mac addresses) + 2 ethertype + 700 payload + 4 byte CRC) = 718. For Ethernet SNAP (6 byte destination + 6 byte source (mac addresses) + 2 byte length field + 1 byte SSAP + 1 byte DSAP (both = 0xAA) + 1 byte control + 5 byte OUI + 700 payload + 4 byte CRC) = 726. Regards, Phil. PS: I think there is a pocket handbook by Miller that explains this in more detail. --- "Lupi, Guy" wrote: > Thank you to all who replied to this post. I do > have another question for > you. When the packet is sent to layer 2 for > encapsulation and transmission, > if it is Ethernet, an Ethernet header is placed on > and the frame is > transmitted. As far as I know the only requirement > is that the frame must > end on a 32 bit boundary, must be at least 64 bytes, > and is not padded > further. So that if the packet is 700 bytes, and is > encapsulated in an > Ethernet frame, the total would be approximately 726 > bytes. Is this > correct? > > -Original Message- > From: Priscilla Oppenheimer > [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, July 18, 2001 2:52 PM > To: [EMAIL PROTECTED] > Subject: Re: Packet Sizes [7:12826] > > > FTP generally uses a full-size packet: 1500 bytes on > Ethernet, not counting > the header, CRC, preamble, inter-frame gap, or any > VLAN or MPLS tagging. > > HTTP does not use a full-size packet usually. You > would think it would, but > it tends to use a 500-600 byte packet size. Using a > shorter packet size > improves perceived performance because the screen > can show partial data > while more data is en route. > > ICMP depends on what you are doing and what > parameters you use. Most error > or warning messages would be very short, probably 64 > bytes or so. If it's > ICMP echo (ping), then the user can specify the > number of bytes. > > TFTP sends data in 512 byte blocks. Add the 8-byte > UDP and 20-byte IP > header. > > For all of these examples, there may be additional > shorter packets for ACKs > and other overhead. > > Priscilla > > At 11:41 AM 7/18/01, Lupi, Guy wrote: > >Does anyone have a list of average packet sizes for > different services? > >Things like FTP, HTTP, ICMP, TFTP and the like. > Just something general is > >fine, I am aware that there is no hard and fast > rule. > > > Priscilla Oppenheimer > http://www.priscilla.com [EMAIL PROTECTED] Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=12941&t=12826 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: To CCIE's without a job [7:12805]
Ole, I think I know where Priscilla is coming from. I developed software for 10 years (mainly C/C++) before turning to Network Engineering. The difference in the roles in my experience has been dramatic. Software Engineering requires an intensity of concentration that I can only compare to playing chess. I was rarely required to interact with customers and as a result my interpersonal skills didn't develop. I took my first job in Networking for a major bank. This was very open plan and one day the team leader called the regular meeting. Everyone shuffled towards the meeting room EXCEPT me. 45 mins later my team leader came looking for me. I was still at my desk, deep in concentration. She couldn't stop laughing as everyone else was taking bets as to when I would realise that no-one else was there. I hadn't noticed a thing. Customer interaction has also been a learning curve but fortunately I appear to have picked this skill up quite naturally. I am much happier in my work now and don't intend to return to Software Development. Both Software development and Network Engineering are such wide and diverse fields you cannot possibly keep up with both. I havn't written Software for 5 years now and while the logical skill required to do so will never leave me the Microsoft Foundation Clases certainly have. Regards, Phil. --- Ole Drews Jensen wrote: > I don't agree with your Priscilla. > > Again, I am not a CCIE yet, but I'm on my way. I > like doing both things (and > system administration), but then again - maybe I > have a split personality > 8^O > > I agree with you about not finding many with this > skill, but hopefully I > will become one soon. > > Take care, > > Ole > > ~~~ > Ole Drews Jensen > Systems Network Manager > CCNA, MCSE, MCP+I > RWR Enterprises, Inc. > [EMAIL PROTECTED] > ~~~ > http://www.OleDrews.com/CCNP > ~~~ > NEED A JOB ??? > http://www.oledrews.com/job > ~~~ > > > -Original Message- > From: Priscilla Oppenheimer > [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, July 18, 2001 1:52 PM > To: [EMAIL PROTECTED] > Subject: Re: To CCIE's without a job [7:12805] > > > That's a scary thought: CCIEs who develop protocols. > ;-] > > They are looking for software engineers. They aren't > going to find many > that have a CCIE? It's a different skill set and > requires a different type > of personality. > > Priscilla > > At 09:41 AM 7/18/01, Ole Drews Jensen wrote: > >Forgive me for sending this here, I know there's a > place for job > >discussions, but I noticed that there have been > several e-mails about how > >CCIE's now have a harder time getting jobs. > > > >I received this e-mail (look at the message > included after my signature) on > >another Cisco list I'm a member of: > > > >Hth, > > > >Ole > > > >~~~ > > Ole Drews Jensen > > Systems Network Manager > > CCNA, MCSE, MCP+I > > RWR Enterprises, Inc. > > [EMAIL PROTECTED] > >~~~ > > http://www.OleDrews.com/CCNP > >~~~ > > NEED A JOB ??? > > http://www.oledrews.com/job > >~~~ > > > >Message: 1 > >Date: Tue, 17 Jul 2001 15:11:26 - > >From: "JDO" > > >Subject: Looking for a Special Kind of CCIE > > > >Hello, > > > >My name is Johnna Smith and I work for a placement > firm in Dallas, > >Texas. I am in desperate need of a CCIE that > DEVELOPS routing > >protocols. I need them to have BGP, DSPF, IS-IS, > and MPLS. The must > >be a software engineer and they must be degreed. > > > >If any of you could help me, please give me a call > or shoot me an > >email at [EMAIL PROTECTED] or at > >972-991-7569. > > > >Just to take a look at someof our other positions > please go to > > > > > >We also work with another agency that focuese more > on IT, you can > >find their site at > > > >Thanks > > > >Johnna > > > Priscilla Oppenheimer > http://www.priscilla.com [EMAIL PROTECTED] Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=12930&t=12805 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: To CCIE's without a job [7:12805]
Even more scary will be the day that I.T. agents develop brains. Phil. --- Priscilla Oppenheimer wrote: > That's a scary thought: CCIEs who develop protocols. > ;-] > > They are looking for software engineers. They aren't > going to find many > that have a CCIE? It's a different skill set and > requires a different type > of personality. > > Priscilla > > At 09:41 AM 7/18/01, Ole Drews Jensen wrote: > >Forgive me for sending this here, I know there's a > place for job > >discussions, but I noticed that there have been > several e-mails about how > >CCIE's now have a harder time getting jobs. > > > >I received this e-mail (look at the message > included after my signature) on > >another Cisco list I'm a member of: > > > >Hth, > > > >Ole > > > >~~~ > > Ole Drews Jensen > > Systems Network Manager > > CCNA, MCSE, MCP+I > > RWR Enterprises, Inc. > > [EMAIL PROTECTED] > >~~~ > > http://www.OleDrews.com/CCNP > >~~~ > > NEED A JOB ??? > > http://www.oledrews.com/job > >~~~ > > > >Message: 1 > >Date: Tue, 17 Jul 2001 15:11:26 - > >From: "JDO" > > >Subject: Looking for a Special Kind of CCIE > > > >Hello, > > > >My name is Johnna Smith and I work for a placement > firm in Dallas, > >Texas. I am in desperate need of a CCIE that > DEVELOPS routing > >protocols. I need them to have BGP, DSPF, IS-IS, > and MPLS. The must > >be a software engineer and they must be degreed. > > > >If any of you could help me, please give me a call > or shoot me an > >email at [EMAIL PROTECTED] or at > >972-991-7569. > > > >Just to take a look at someof our other positions > please go to > > > > > >We also work with another agency that focuese more > on IT, you can > >find their site at > > > >Thanks > > > >Johnna > > > Priscilla Oppenheimer > http://www.priscilla.com [EMAIL PROTECTED] Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=12858&t=12805 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Packet Sizes [7:12826]
Guy, The average packet sizes is not as much dependant on the protocol as it is on the physical medium although the protocol does count. Out of the ones you mention ICMP should be the smallest by the nature of the beast (64 bytes). The rest if configured for Eth would have a max payload of 1500 bytes. If Token Ring a max of 4400 bytes (roughly) as it depends on Token rotation time. HTH, Phil. --- "Lupi, Guy" wrote: > Does anyone have a list of average packet sizes for > different services? > Things like FTP, HTTP, ICMP, TFTP and the like. > Just something general is > fine, I am aware that there is no hard and fast > rule. [EMAIL PROTECTED] Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=12857&t=12826 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: WAN link funnies - UP UP but no comms- on same subnet!!! [7:12778]
Andrew, From what you say your remote end is working fine both in Tx and Rx and your Tx is working fine since remote end sees your cdp. Your Rx appears to be the problem. Have you tried swapping out your local Serial cable ? What about 'sh int serial xxx' to check your pins ? DCD RTS etc. regards, Phil. --- Andrew Larkins wrote: > HI all, > > Strange problem here. > > The serial interface are UP UP on both sides, but we > are not able to ping > each other - even though directly connected. A > "debug ip ICMP" on the > remote site shows the ping coming through and > replying, but the reply never > gets back. > Also the remote site saw my router using CDP, but I > do not see him. > > Any ideas?? > > I believe this is Telco related, but the line shows > clean from the interface > stats > > Andrew [EMAIL PROTECTED] Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=12778&t=12778 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Still having BRI stress! [7:11653]
I would just take them off i.e remove the access-group statements for both just to eliminate any restrictive movement. Phil. --- Uche Ishionwu wrote: > Ok,I'll try it without the access lists...but I > guess access list '99' has > to remain 'cause it's tied to Dialer list 2. Right > ??? > cheers. >-Uche. [EMAIL PROTECTED] Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=11683&t=11653 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Still having BRI stress! [7:11653]
I don't think that the ppp negotiation is getting started but cannot work out why !!! Regs, Phil. --- Charles Manafa wrote: > Uche, > You may have an end-to-end connectivity problem. > What does "debug ppp > negotiation" give you. I believe your ISDN line is > good, and the problem > might be the other end. Also, try dropping ppp > multilink. > > CM > > > -Original Message- > > From: Uche Ishionwu [mailto:[EMAIL PROTECTED]] > > Sent: 10 July 2001 11:28 > > To: [EMAIL PROTECTED] > > Subject: RE: Still having BRI stress! [7:11653] > > > > > > Christian, > > I have IOS version 12.0. currently > running..see config > > below I also > > configured the line as ppp multilink..just > check out the > > config, and let > > me know what's wrong. > > > > PS: Are u in Germany by any chance - please > let me know. > > cheers! > > > > config-> > > > > > > > > oks#sh conf > > Using 1721 out of 29688 bytes > > ! > > version 12.0 > > service timestamps debug uptime > > service timestamps log uptime > > no service password-encryption > > ! > > hostname oks > > ! > > no logging monitor > > enable secret 5 $1$IU9Q$qYwqs3CXuKmsl1y1GjcM30 > > enable password oks > > ! > > username msn password 0 msn > > ! > > ! > > ! > > ! > > memory-size iomem 15 > > ip subnet-zero > > no ip domain-lookup > > ! > > isdn switch-type basic-net3 > > isdn voice-call-failure 0 > > isdn tei-negotiation first-call > > ! > > ! > > ! > > interface FastEthernet0/0 > > ip address 192.168.0.2 255.255.255.0 > > no ip directed-broadcast > > duplex auto > > speed auto > > ! > > interface BRI0/0 > > description OKS testing interface! > > no ip address > > no ip directed-broadcast > > encapsulation ppp > > dialer pool-member 1 > > dialer pool-member 2 > > isdn switch-type basic-net3 > > isdn twait-disable > > ! > > interface Dialer1 > > description connected to ELSATEST > > ip unnumbered BRI0/0 > > ip access-group 1 in > > ip directed-broadcast > > encapsulation ppp > > dialer remote-name msn > > dialer pool 1 > > dialer idle-timeout 2147483 either > > dialer wait-for-carrier-time 90 > > dialer string 0192658 > > dialer hold-queue 100 > > dialer-group 1 > > no cdp enable > > ppp authentication chap > > ppp multilink > > ! > > interface Dialer2 > > ip address 192.168.8.3 255.255.255.0 > > ip access-group 1 in > > ip directed-broadcast > > encapsulation ppp > > dialer pool 2 > > dialer idle-timeout 2147483 either > > dialer wait-for-carrier-time 90 > > dialer string 0192658 > > dialer hold-queue 100 > > dialer-group 2 > > no cdp enable > > ppp authentication chap > > ppp multilink > > ! > > ip classless > > ip route 0.0.0.0 0.0.0.0 Dialer1 > > no ip http server > > ! > > access-list 1 permit any > > access-list 99 permit any > > dialer-list 1 protocol ip permit > > dialer-list 1 protocol ipx permit > > dialer-list 2 protocol ip list 99 > > ! > > line con 0 > > transport input none > > line aux 0 > > line vty 0 4 > > password uche1 > > login > > ! > > end > > > > oks# [EMAIL PROTECTED] Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=11679&t=11653 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Still having BRI stress! [7:11653]
Uche, Can you take the access-lists off until you get this working ? Regs, Phil. --- Uche Ishionwu wrote: > Debug ppp seems to be issuing no results. However > this the outcome of the > other debug querries. > > oks# > oks#sh isdn st > Global ISDN Switchtype = basic-net3 > ISDN BRI0/0 interface > dsl 0, interface ISDN Switchtype = > basic-net3 > Layer 1 Status: > ACTIVE > Layer 2 Status: > TEI = 108, Ces = 1, SAPI = 0, State = > MULTIPLE_FRAME_ESTABLISHED > Layer 3 Status: > 0 Active Layer 3 Call(s) > Activated dsl 0 CCBs = 0 > The Free Channel Mask: 0x8003 > > oks#deb isdn ? > L2-Sock-Proc ISDN L2 Socket Process packets > eventsISDN events > q921 ISDN Q921 packets > q931 ISDN Q931 packets > > oks#deb isdn ev > ISDN events debugging is on > oks#deb isdn q92 > ISDN Q921 packets debugging is on > oks#deb isdn q93 > ISDN Q931 packets debugging is on > oks# > oks# > 03:20:21: ISDN BR0/0: RX RRf sapi = 0 tei = 108 > nr = 82 > oks# > 03:20:31: ISDN BR0/0: RX RRf sapi = 0 tei = 108 > nr = 82 > 03:20:176093659136: ISDN BR0/0: TX -> RRp sapi = 0 > tei = 108 nr = 82 > 03:20:41: ISDN BR0/0: RX RRf sapi = 0 tei = 108 > nr = 82 > 03:20:41: ISDN BR0/0: RX RRf sapi = 0 tei = 108 > nr = 82 > 03:21:4294967296: ISDN BR0/0: TX -> RRp sapi = 0 > tei = 108 nr = 82 > 03:21:01: ISDN BR0/0: RX RRf sapi = 0 tei = 108 > nr = 82 > 03:21:01: ISDN BR0/0: RX RRf sapi = 0 tei = 108 > nr = 82 > 03:21:90194313216: ISDN BR0/0: TX -> RRp sapi = 0 > tei = 108 nr = 82 > 03:21:21: ISDN BR0/0: RX RRf sapi = 0 tei = 108 > nr = 82 > 03:21:21: ISDN BR0/0: RX RRf sapi = 0 tei = 108 > nr = 82 > 03:21:176093659136: ISDN BR0/0: TX -> RRp sapi = 0 > tei = 108 nr = 82 > 03:21:41: ISDN BR0/0: RX RRf sapi = 0 tei = 108 > nr = 82 > 03:21:41: ISDN BR0/0: RX RRf sapi = 0 tei = 108 > nr = 82 > 03:22:01: ISDN BR0/0: RX RRf sapi = 0 tei = 108 > nr = 82 > 03:22:11: ISDN BR0/0: RX RRf sapi = 0 tei = 108 > nr = 82 > 03:22:21: ISDN BR0/0: RX RRf sapi = 0 tei = 108 > nr = 82 > 03:22:31: ISDN BR0/0: RX RRf sapi = 0 tei = 108 > nr = 82 > 03:22:176093659136: ISDN BR0/0: TX -> RRp sapi = 0 > tei = 108 nr = 82 > 03:22:41: ISDN BR0/0: RX RRf sapi = 0 tei = 108 > nr = 82 > 03:22:41: ISDN BR0/0: RX RRf sapi = 0 tei = 108 > nr = 82 > 03:23:4294967296: ISDN BR0/0: TX -> RRp sapi = 0 > tei = 108 nr = 82 > 03:23:01: ISDN BR0/0: RX RRf sapi = 0 tei = 108 > nr = 82 > 03:23:01: ISDN BR0/0: RX RRf sapi = 0 tei = 108 > nr = 82 > 03:23:90194313216: ISDN BR0/0: TX -> RRp sapi = 0 > tei = 108 nr = 82 > 03:23:21: ISDN BR0/0: RX RRf sapi = 0 tei = 108 > nr = 82 > 03:23:21: ISDN BR0/0: RX RRf sapi = 0 tei = 108 > nr = 82 > 03:23:41: ISDN BR0/0: RX RRf sapi = 0 tei = 108 > nr = 82 > 03:23:51: ISDN BR0/0: RX RRf sapi = 0 tei = 108 > nr = 82 > 03:24:01: ISDN BR0/0: RX RRf sapi = 0 tei = 108 > nr = 82 > 03:24:11: ISDN BR0/0: RX RRf sapi = 0 tei = 108 > nr = 82 > > ___ > > > oks#debug dialer > Dial on demand events debugging is on > oks#debug dialer ev > Dial on demand events debugging is on > oks#debug dialer p > Dial on demand packets debugging is on > oks# > 03:29:12: BR0/0 DDR: cdp, 342 bytes, outgoing > uninteresting (no dialer-group > def > ined) > 03:29:12: BR0/0 DDR: sending broadcast to default > destination -- failed, not > con > nected [EMAIL PROTECTED] Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=11681&t=11653 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Still having BRI stress! [7:11653]
Uche, Have you tried 'debug ppp' ? Since this is the layer that isn't connecting. Can U post the debug output ? Regs, Phil. --- Uche Ishionwu wrote: > Hello,... >I changed my configuration somewhat, and removed > a module. But my cisco > 2620 still wont dial out.!!.can someone look at > the configuration and > the error out put and let me know what may still be > the cause.(Layer 1. and > layer 2. -isdn events- are ok, but theres still no > connection) >-Uche. > config---> > > > oks>en > Password: > oks#sh conf > Using 1496 out of 29688 bytes > ! > version 12.0 > service timestamps debug uptime > service timestamps log uptime > no service password-encryption > ! > hostname oks > ! > no logging console > no logging monitor > enable secret 5 $1$IU9Q$qYwqs3CXuKmsl1y1GjcM30 > enable password oks > ! > username msn password 0 msn > ! > ! > ! > ! > memory-size iomem 15 > ip subnet-zero > no ip domain-lookup > ! > isdn switch-type basic-net3 > ! > ! > ! > interface FastEthernet0/0 > ip address 192.168.0.2 255.255.255.0 > no ip directed-broadcast > duplex auto > speed auto > ! > interface BRI0/0 > description OKS testing interface! > no ip address > no ip directed-broadcast > encapsulation ppp > dialer pool-member 1 > dialer pool-member 2 > isdn switch-type basic-net3 > ! > interface Dialer1 > description connected to ELSATEST > ip address 192.168.8.2 255.255.255.0 > no ip directed-broadcast > encapsulation ppp > dialer pool 1 > dialer wait-for-carrier-time 90 > dialer string 00192658 > dialer hold-queue 10 > dialer-group 1 > ppp authentication chap > ! > interface Dialer2 > ip address 192.168.8.3 255.255.255.0 > no ip directed-broadcast > encapsulation ppp > dialer pool 2 > dialer wait-for-carrier-time 90 > dialer string 00192658 > dialer hold-queue 10 > dialer-group 2 > no cdp enable > ppp authentication chap > ! > ip classless > ip route 0.0.0.0 0.0.0.0 Dialer1 > no ip http server > ! > access-list 99 permit any > dialer-list 1 protocol ip permit > dialer-list 1 protocol ipx permit > dialer-list 2 protocol ip list 99 > ! > line con 0 > transport input none > line aux 0 > line vty 0 4 > password uche1 > login > ! > no scheduler allocate > end > > oks# > > 00:13:236223201280: ISDN ERROR: Module-CCBRI > Function-_Go Error-Event > receive > d for an unrecognized call. Data- B6, 0 [EMAIL PROTECTED] Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=11664&t=11653 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: My BRI interface will not respond! [7:11045]
Watch out for low flying planes !!! and dem pesky U'boats. --- Uche Ishionwu wrote: > yes, Im in Germany.any tips? > -Uche. [EMAIL PROTECTED] Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=11079&t=11045 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
sh controller fas 0/1 output ? [7:11077]
Hi group, I have a 2621 Router and an AUI/Fibre converter on the Fa 0/1 interface. Users are experiencing problems at the remote end of the fibre link (a 1900 switch). I have checked all ports and interfaces and nothing obvious is showing up. All ports are 1/2 duplex including the uplink (fibre port) which I am about to change soon to full duplex. (I've only just started here !!!) No errors show up on 'sh int fas0/1' but the following appears on the 'sh controller fas0/1' It doesn't look healthy to me, can anyone confirm this output ? rx_framing_err=0, rx_overflow_err=0, rx_buffer_err=0 rx_bpe_err=0, rx_soft_overflow_err=0, rx_no_enp=0, rx_discard=0 tx_one_col_err=1803830, tx_more_col_err=2144704, tx_no_enp=0, tx_deferred_err=3 802838 Any help appreciated, Phil. Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=11077&t=11077 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: My BRI interface will not respond! [7:11045]
According to 'sh isdn status' you are good at layers 1 and 2. Try a debug ppp and try the dialup again. Post the results if you can. Regards, Phil. --- Damien Kelly wrote: > Might want to change you ISDN switch type? > basic-1tr6 > BRI isdn switch for Germany. I know basic-net3 is > EuroISDN standard but > your provider may not support it yet > > Just a suggestion. > > > > -Original Message- > From: Uche Ishionwu [mailto:[EMAIL PROTECTED]] > Sent: Thursday, July 05, 2001 2:27 PM > To: [EMAIL PROTECTED] > Subject: RE: My BRI interface will not respond! > [7:11045] > > > yes, Im in Germany.any tips? > -Uche. > ** > The information contained in this message is > confidential and > is intended for the addressee(s) only. If you have > received > this message in error or there are any problems > please notify > the originator immediately. The unauthorised use, > disclosure, > copying or alteration of this message is strictly > forbidden. This > message and any attachments have been scanned for > viruses. > Orbiscom Ltd. will not be liable for direct, > special, indirect or > consequential damages arising from alteration of the > contents > of this message by a third party or as a result of > any virus being > passed on. > > > www.Orbiscom.com > ** [EMAIL PROTECTED] Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=11071&t=11045 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: My BRI interface will not respond! [7:11045]
Can you post a copy of 'sh isdn status' for the bri ? Phil. --- Charles Manafa wrote: > You can't ignore the "dialer map" statement, you > need it for legacy DDR. > That's what binds the remote IP address to a phone > number. > > CM > > -Original Message- > From: Uche Ishionwu > To: [EMAIL PROTECTED] > Sent: 05/07/01 11:53 > Subject: My BRI interface will not respond! > [7:11045] > > Who can help me? I am trying to get cisco2620 > modular router to route > out > of it's bri interface. can anyone help? below you > will find a copy of th > current configurationthe only significant > interface to look out for > here > is Bri1/0 ...This is the interface i am testing with > at the moment. You > can > just ignore the Dialer map / dialer interface > configurations for now. I > just > want to see the interface showing some sign of > lifeat the moment the > lights wont even flicker, even though the debug(q921 > & q931) messages > I'm > receiving arent showing me anything relevant. > I would really appreciate any form of help. Cheers > Pash! > > Config> > > > oks>en > Password: > oks#sh conf > Using 1443 out of 29688 bytes > ! > version 12.0 > service timestamps debug uptime > service timestamps log uptime > no service password-encryption > ! > hostname oks > ! > no logging console > no logging monitor > enable secret 5 $1$DjGs$cxj/.CpMxoel/kKvi.Wqn1 > ! > ! > ! > ! > ! > memory-size iomem 15 > ip subnet-zero > ! > isdn switch-type basic-net3 > isdn voice-call-failure 0 > ! > ! > ! > interface FastEthernet0/0 > ip address 192.168.0.2 255.255.255.0 > no ip directed-broadcast > duplex auto > speed auto > ! > interface BRI0/0 > no ip address > no ip directed-broadcast > shutdown > isdn switch-type basic-net3 > ! > interface BRI1/0 > ip address 192.168.8.2 255.255.255.0 > no ip directed-broadcast > encapsulation ppp > dialer string 053 > dialer string 02710750 > dialer-group 1 > isdn switch-type basic-net3 > ! > interface BRI1/1 > no ip address > no ip directed-broadcast > shutdown > isdn switch-type basic-net3 > ! > interface BRI1/2 > no ip address > no ip directed-broadcast > shutdown > isdn switch-type basic-net3 > ! > interface BRI1/3 > no ip address > no ip directed-broadcast > shutdown > isdn switch-type basic-net3 > ! > interface Dialer0 > no ip address > no ip directed-broadcast > dialer in-band > no cdp enable > ! > ip classless > ip route 192.168.0.0 255.255.255.0 FastEthernet0/0 > ip route 192.168.8.0 255.255.255.0 BRI1/0 > no ip http server > ! > ! > map-class dialer > ! > map-class dialer oks_cisco1 > dialer isdn speed 56 > dialer-list 1 protocol ip permit > ! > line con 0 > password ucheoma > transport input none > line aux 0 > line vty 0 4 > login > ! > end [EMAIL PROTECTED] Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=11049&t=11045 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: bridging on routers [7:10997]
Yes, enable bridging in global config mode for IEEE 802.1d or DEC and place selected interfaces into a bridge group. Phil. --- "Burnham, Chris" wrote: > When configuring transparent bridging on a router , > do you have to specify > one of CRB (Concurrent Routing /Bridging) or > IRB(Intergrated routing and > Bridging) . > My question is can you have just plain old > transparent bridging > > Chris Burnham, > Systems Engineer, > Delphis Consulting Plc. > Tel: +(44) 020 7916 0200 > Mob: +(44) 07799403576 > [EMAIL PROTECTED] > > > This e-mail and any files transmitted with it are > intended solely for the > addressee and are confidential. They may also be > legally privileged. > Copyright in them is reserved by Delphis Consulting > PLC ["Delphis"] and they > must not be disclosed to, or used by, anyone other > than the addressee. If > you have received this e-mail and any accompanying > files in error, you may > not copy, publish or use them in any way and you > should delete them from > your system and notify us immediately.E-mails are > not secure. Delphis does > not accept responsibility for changes to e-mails > that occur after they have > been sent. Any opinions expressed in this e-mail > may be personal to the > author and may not necessarily reflect the opinions > of Delphis. [EMAIL PROTECTED] Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=11043&t=10997 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Snoop details [7:9944]
This looks a bit dodgy, It looks like the SAPS should be 00, 00. But the Analyser is mis-representing the info- . What type of analyser is producing this decode ? Can you send the hex version of the data ? Regs, Phil. --- Priscilla Oppenheimer wrote: > At 01:45 AM 6/27/01, Ramesh c wrote: > >More input > > > >Today I analzsed the network for 45 minutes of > which 5500 packets were > >caught of which 4100 were Broadcast(1650) and > multicast. > > That's a lot, but are you capturing on a switched > port? You will see only > broadcasts and packets to that port (unless you use > SPAN). > > I can't understand why it says EtherType is , > especially since it is an > 803.2 frame. I guess it's just trying to tell you > that there is no > EtherType. But what is the SAP? > > One of them is in AppleTalk frame. AppleTalk routers > multicast their > routing table every 10 seconds, which is a lot and > could "skew" the data. > > Priscilla > > > >Does that sound any caution on my network?. > > > >The Broadcast and multicast packets header as > follows > > > >ETHER: - Ether Header - > >ETHER: > >ETHER: Packet 88 arrived at 11:20:55.53 > >ETHER: Packet size = 494 bytes > >ETHER: Destination = ff:ff:ff:ff:ff:ff, > (broadcast) > >ETHER: Source = 0:10:7b:b6:ee:a0, > >ETHER: IEEE 802.3 length = 480 bytes > >ETHER: Ethertype = (LLC/802.3) > >ETHER: > > > >ETHER: - Ether Header - > >ETHER: > >ETHER: Packet 89 arrived at 11:20:55.59 > >ETHER: Packet size = 494 bytes > >ETHER: Destination = ff:ff:ff:ff:ff:ff, > (broadcast) > >ETHER: Source = 0:10:7b:b6:ee:a0, > >ETHER: IEEE 802.3 length = 480 bytes > >ETHER: Ethertype = (LLC/802.3) > >ETHER: > > > >ETHER: - Ether Header - > >ETHER: > >ETHER: Packet 90 arrived at 11:20:55.64 > >ETHER: Packet size = 494 bytes > >ETHER: Destination = ff:ff:ff:ff:ff:ff, > (broadcast) > >ETHER: Source = 0:10:7b:b6:ee:a0, > >ETHER: IEEE 802.3 length = 480 bytes > >ETHER: Ethertype = (LLC/802.3) > >ETHER: > > > >ETHER: - Ether Header - > >ETHER: > >ETHER: Packet 91 arrived at 11:20:55.70 > >ETHER: Packet size = 110 bytes > >ETHER: Destination = ff:ff:ff:ff:ff:ff, > (broadcast) > >ETHER: Source = 0:10:7b:b6:ee:a0, > >ETHER: IEEE 802.3 length = 96 bytes > >ETHER: Ethertype = (LLC/802.3) > >ETHER: > > > >ETHER: - Ether Header - > >ETHER: > >ETHER: Packet 92 arrived at 11:20:55.88 > >ETHER: Packet size = 52 bytes > >ETHER: Destination = 1:80:c2:0:0:0, (multicast) > >ETHER: Source = 0:90:ab:ec:f3:5, > >ETHER: IEEE 802.3 length = 38 bytes > >ETHER: Ethertype = (LLC/802.3) > >ETHER: > > > >ETHER: - Ether Header - > >ETHER: > >ETHER: Packet 93 arrived at 11:20:55.94 > >ETHER: Packet size = 45 bytes > >ETHER: Destination = 9:0:7:ff:ff:ff, (multicast) > >ETHER: Source = 0:60:b0:54:c1:7e, > >ETHER: IEEE 802.3 length = 31 bytes > >ETHER: Ethertype = 809B (EtherTalk (AppleTalk over > Ethernet)) > >ETHER: > > > >-- > > > >On Tue, 26 Jun 2001 12:58:10 > > Priscilla Oppenheimer wrote: > > >2100 broadcasts in 30 minutes might be OK, > actually. Can you tell us how > > >much bandwidth they are using? Can you tell us > what percentage of the > > >packets are broadcasts? A rule of thumb that > Cisco teaches is that no more > > >than 20% of your packets should be broadcasts. > The main problem with > > >broadcasts is that they interrupt station CPUs, > but with the high-speed of > > >CPUs these days, that is less of an issue. > > > > > >You seem to be running NetBT, which is NetBIOS > over TCP/IP. (NetBEUI is > > >NetBIOS running directly on a data-link, which is > not what you are > > >running.) NetBIOS sends lots of broadcasts. In > this example, the server > > >CDTOWER is sending a broadcast. You need to find > out if that is necessary > > >on your network or not. It seems a bit odd that > CDTOWER is sending the > > >frame directly to RND at the NetBIOS layer but to > a broadcast address at > > >the network and data-link layers. Sometimes a > subnet mask misconfiguration > > >can cause such a problem. Check CDTOWER and RND's > configs. > > > > > >The last byte of a NetBIOS name tells you what > kind of device it is. > > >CDTOWER ends with x20, which means server, if I > remember correctly. RND > > >ends with 0x0 and I have forgotten what that > means and my NetBIOS > > >documentation is packed away. But you could find > this somewhere on the Net > > >or one of our esteemed colleagues probably knows. > > > > > >I don't recognize the other broadcast packets. > They have an 802.3 length > > >field of 0 even though there's data in the > packet. It sounds like a bug? > > >Would it be possible to find the station sending > them (0:8:c7:d2:4a:ab) > and > > >check its configuration? > > > > > >Priscilla > > > > > >At 05:20 AM 6/26/01, Ramesh c wrote: > > >>I did a kind of traffic study on my network and > here it goes > > >> > > >>1)I get about 2100 broadcast
Re: TCP Sequence. [7:9918]
With regard to the Window sizes agreeing a common value (1024) the answer is generally no. Let Host A have a large buffer and host B have a small buffer. If the window sizes had to agree then the window would have no choice but to take the smaller size. The window sizes are for host A and host B respectively. HTH, Phil. --- Ryan Ngai Hon Kong wrote: > Hi all, > > I guess I'm repeating this question again. But > hopefully someone could point > how do I go about this. > > Initial Syn, host A send out this number. Size=512, > Seq = 1234 ACK=333 > and B reply Size=1024, Seq=5435 ACK=444. What would > A reply/see? > > I guess the Seq and ACK should be incrementing by 1, > but what about the > window size? Since startup is 512 and B reply 1024, > would A reply as 1024? > > Regards, > Ryan [EMAIL PROTECTED] Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=9946&t=9918 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
cisco 500 series content engine ? [7:8945]
Hi Group, Has anyone installed the cisco 500 series content engine. I've just been reading the manual and it contains to Eth ports. My question is, what is the second eth port for ? Regards, Phil. Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=8945&t=8945 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
