Re: For Priscilla [7:71462]
Or if you don't want to order online just go to any bookstore and order ISBN: 0471210137 - Original Message - From: Reza To: Sent: Thursday, June 26, 2003 2:34 PM Subject: Re: For Priscilla [7:71462] Go to www.bookpool.com and order it. It cost $50.50 Reza Mauricio H Fernandez wrote in message news:[EMAIL PROTECTED] I have been trying to get Troubleshooting Campus Networks for the longest time. I've met Joeseph B. He is one of the smartest guys I've ever encountered. Can you tell me PLEASE why your book is so hard to get? Mauricio H Fernandez Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=71478t=71462 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: OT/Look at the requirements of this position!! [7:71173]
.. and Openview and Sniffers and SNA and MVS and Unix and clusters and VAX and Concord and etc... Your probably right about the downsizing, if that's the case I pity the poor soul who takes the 4 jobs. BTDT, they gave me the tee-shirt. - Original Message - From: Priscilla Oppenheimer To: Sent: Monday, June 23, 2003 10:47 PM Subject: Re: OT/Look at the requirements of this position!! [7:71173] Mike Mandulak wrote: My read on this job post is that they do know what they need, They want someone cheap who knows NT, Windows 2000, Exchange, Citrix, VPNs, WANs, and Cisco, and has at least 4 years experience running a large WAN. They down-sized and now they think they can find one person to do what was 4 people's jobs. This person has to travel with little notice 50% of the time. In other words, the most obvious qualification this person has to have is desperate need for a job! :-) Priscilla they're looking for someone who is an expert in NT, Exchange and Citrix which is deployed at 30 sites in 5 countries and growing. As such they need to be able to add and maintain servers in a WAN environment and understand the implications of running these apps over those links. A CCIE may or may not know said applications in depth enough to maintain or even may not want to maintain them to the degree that is needed. Now if a person were to send a resume that listed MCSE and CCIE on the resume then the only reason that I can see for them not wanting them would be the cost of such a person or lack of knowledge with one of the core requested disiplines. - Original Message - From: Kevin Wigle To: Sent: Monday, June 23, 2003 6:37 PM Subject: Re: OT/Look at the requirements of this position [7:71173] or perhaps the opposite. Maybe the HR person is fully aware of what they're asking for. Perhaps a CCIE is over qualified for the position - in their opinion. Kevin Wigle - Original Message - From: Ware, DavidE To: Sent: Monday, June 23, 2003 3:38 PM Subject: RE: OT/Look at the requirements of this position [7:71173] Who ever the hiring manager is, he or she lack's an understanding of the progression on Cisco certifications. To say that a CCNP's may be considered, however CCIE's or nearly qualified CCIE's won't be shows a lack of the level of knowledge required to obtain those certifications. Dave David Ware Network Design Engineer Unisys Eagan Service Center, Global Outsourcing 651-687-3108 Net 545-3108 [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=71219t=71173 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: OT/Look at the requirements of this position!!!! [7:71173]
My read on this job post is that they do know what they need, they're looking for someone who is an expert in NT, Exchange and Citrix which is deployed at 30 sites in 5 countries and growing. As such they need to be able to add and maintain servers in a WAN environment and understand the implications of running these apps over those links. A CCIE may or may not know said applications in depth enough to maintain or even may not want to maintain them to the degree that is needed. Now if a person were to send a resume that listed MCSE and CCIE on the resume then the only reason that I can see for them not wanting them would be the cost of such a person or lack of knowledge with one of the core requested disiplines. - Original Message - From: Kevin Wigle To: Sent: Monday, June 23, 2003 6:37 PM Subject: Re: OT/Look at the requirements of this position [7:71173] or perhaps the opposite. Maybe the HR person is fully aware of what they're asking for. Perhaps a CCIE is over qualified for the position - in their opinion. Kevin Wigle - Original Message - From: Ware, DavidE To: Sent: Monday, June 23, 2003 3:38 PM Subject: RE: OT/Look at the requirements of this position [7:71173] Who ever the hiring manager is, he or she lack's an understanding of the progression on Cisco certifications. To say that a CCNP's may be considered, however CCIE's or nearly qualified CCIE's won't be shows a lack of the level of knowledge required to obtain those certifications. Dave David Ware Network Design Engineer Unisys Eagan Service Center, Global Outsourcing 651-687-3108 Net 545-3108 [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=71208t=71173 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: ISDN CCIE [7:70944]
At the bank that where I worked, we used ATM at the primary/secondary network locations and frame relay at the branch offices and ATM machines. The telco did the ATM FR mapping in thier switches. We also had ISDN as a backup at all locations and got rid of the STUN network. There's nothing like having someone frantically proclaim to you that the ATM circuit is down. Another one was when a project manager scheduled a meeting with us to discuss the ATM circuits that will be needed for the new offices coming online. Several minutes into the meeting we realized that we were talking about two different things. - Original Message - From: Howard C. Berkowitz To: Sent: Friday, June 20, 2003 5:48 PM Subject: Re: ISDN CCIE [7:70944] At 7:50 PM + 6/20/03, Duy Nguyen wrote: I do believe, atm's and gas pumps uses ISDN. So it's still a need, when its in need, you gotta know it. This does make me wonder if any atm's use ATM. Joking aside, many money machines use an interesting ATM variant: 0B+D. They send X.25 encapsulated packets on the D channel. This approach tended to replace multidrop IBM protocols. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=71042t=70944 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: SNIFFER SOFTWARE [7:63586]
It works fine for me, but I did do an uninstall/reinstall after upgrading to XP. - Original Message - From: PacketEXPERTS To: Sent: Sunday, February 23, 2003 12:42 PM Subject: SNIFFER SOFTWARE [7:63586] Sniffer Pro 4.5 and NetXRay 3.0 work fine with Windows 98, but is there a patch, or a way to upgrade Sniffer Pro 4.5 or NetXRay 3.0 to be compatable with Windows XP? = = = = = = = = = = = = = = = = = = Please send replys to: [EMAIL PROTECTED] = = = = = = = = = = = = = = = = = = - Do you Yahoo!? Yahoo! Tax Center - forms, calculators, tips, and more Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=63592t=63586 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Network Monitoring [7:63532]
Look at What's Up Gold from Ipswitch. Last I looked it's about $700 US. They have a 30 day eval on thier site. www.ipswitch.com - Original Message - From: Kevin Banifaz To: Sent: Friday, February 21, 2003 5:32 PM Subject: Network Monitoring [7:63532] Does anyone know of any free or really cheap network monitoring tools, I work for a real cheap company and I can't get them to shell out for HP OV. I appreciate a response. Thanks in advance Kaveh _ The new MSN 8: advanced junk mail protection and 2 months FREE* http://join.msn.com/?page=features/junkmail Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=63539t=63532 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Token Ring fundamentals [7:53871]
Oops I forgot to cc my reply to the list again. but you're right. Here's what I sent him... Only one. However (there's always a however) the adapters can be configured to use ETR (early token release) which means that as soon as an adapter starts receiving a frame it can start transmitting its own data out the TX path while receiving the incoming frame. While that's not 2 tokens, it is 2 different frames on the wire at the same time. - Original Message - From: Ken Chipps To: Sent: Sunday, September 22, 2002 9:37 PM Subject: Re: Token Ring fundamentals [7:53871] One, unless early token release is in effect. Assuming I am remembering my old Token Ring stuff right. Tim Metz wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... While doing some token ring reading I realized that I have no idea how many tokens can be on the ring at one time. anyone??? stupid question?? Tim Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=53880t=53871 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: New Subnet Rule [7:47670]
I'm not really sure what your getting at here... If you configure a machine address to be 192.168.0.2/24 you are using subnet zero, whereas if you configure a machine with an address of 192.168.0.241-254/28 you are not. If you mean configure the PC with an address of 192.168.0.240/28 then that would be a valid test of subnet zero using VLSM. - Original Message - From: R. Benjamin Kessler To: Sent: Saturday, June 29, 2002 1:43 PM Subject: RE: New Subnet Rule [7:47670] Try configuring your machine(s) with addresses in the following networks: 198.62.0.0/28 - e.g. 192.168.0.1-14 and 192.168.0.240/28 - e.g. 192.168.0.241-254 This would be utilizing the all-zeros and all-ones subnets of 192.168.0.0/24 You tested configuring machines in the *networks* 192.168.0.0/24 and 192.168.255.0/24 - not subnets of 192.168.0.0/16 -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Michael L. Williams Sent: Saturday, June 29, 2002 11:49 AM To: [EMAIL PROTECTED] Subject: Re: New Subnet Rule [7:47670] I have successfully used both an all-zeros and an all-ones subnet on Windows 9x. (192.168.0.0/24 and 192.168.255.0/24) Works fine. Mike W. Kazan, Naim wrote in message news:[EMAIL PROTECTED]... Ok, now that we know the answer to that question? Will windows support subnets 0-255. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=47759t=47670 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
FYI Cisco Press sale [7:47383]
CompUSA is doing a close out sale of all of it's Cisco Press books (amongst others). I picked up a dozen books (that I've wanted for a while) from 2 different stores for US $260, normally the collection would have run $680. MikeM [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=47383t=47383 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: FYI Cisco Press sale [7:47383]
Just as a follow up since a couple of people asked direct... The sale books are only available in the stores on separate sale racks near the book section, they are not available through their web site. There were a few books that they didn't have that I still want (I.I. Top Down Network Design) so I'm going to visit a third store in the CT area that's near my sister's house and I'll have to jump into her pool with her kids and cook some burgers on the grill while I'm in the vicinity :-) - Original Message - From: Mike Mandulak To: Sent: Tuesday, June 25, 2002 10:39 AM Subject: FYI Cisco Press sale [7:47383] CompUSA is doing a close out sale of all of it's Cisco Press books (amongst others). I picked up a dozen books (that I've wanted for a while) from 2 different stores for US $260, normally the collection would have run $680. MikeM [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=47410t=47383 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Parity errors and Cosmic radiation! [7:46282]
Digging a hole might not be such a good idea. According to an IBM article, they claim that radon gas can also produce the problem. So I guess you shouldn't put equipment in the basement either. http://www.research.ibm.com/journal/rd/401/curtis.html - Original Message - From: Frank Merrill To: Sent: Tuesday, June 11, 2002 9:54 PM Subject: RE: Parity errors and Cosmic radiation! [7:46282] I read the link referenced at the bottom of the page and it was quite interesting. If you missed it, here it is again: http://www.eetimes.com/news/98/1012news/ibm.html After reading that, I guess you'll be digging a hole to put the router in! ;-) Good Luck! Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=46426t=46282 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: telnet terminal [7:45397]
Here's a link for some shareware clients, http://cws.internet.com/telnet.html I think the only free one there is the Hyperterm Private Edition upgrade, It adds amongst other things TCP/IP (Winsock) support. - Original Message - From: . . To: Sent: Wednesday, May 29, 2002 5:54 PM Subject: telnet terminal [7:45397] what is a popular (and free) telnet terminal for all of you using? _ Chat with friends online, try MSN Messenger: http://messenger.msn.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=45405t=45397 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Logic and Lab Rats [7:44714]
My interpretation of what he meant by that is you have to understand everything that encompasses a campus network. you have to first understand what the data is that the user what's, where it is and how it is that he going to get that information. I.E. There is data on the mainframe that some user needs, it gets pushed to an Oracle/Sun server every night. The user has a PC that logs into a NT domain via his PC and accesses the service, and then the user needs to update the information to the mainframe. When the user has a problem, where do you start to look? Oh and by the way it is a Cisco network, so do you bring in a CCIE to solve the problem? Maybe... - Original Message - From: Cisco Nuts To: Sent: Wednesday, May 22, 2002 3:03 PM Subject: Re: Logic and Lab Rats [7:44714] Could you elaborate on the backbone engineering is at a level far more specialized and complex than the CCIE level, and there haven't been formalized ways to learn it. I would love to know more about what you actuall mean? Thank you. Regards. From: Howard C. Berkowitz Reply-To: Howard C. Berkowitz To: [EMAIL PROTECTED] Subject: Re: Logic and Lab Rats [7:44714] Date: Wed, 22 May 2002 09:49:09 -0400 I'm not saying to close the thread or not, although I think the moderators (I am one) are starting to block messages that come across as personal attacks. What I see is the fundamental misperception in this thread is an assumption there is a binary choice between experience and new training. I freely admit there are experienced people that have had 1 year of experience 20 times. But other experienced people have BOTH the experience and the in-depth protocol knowledge, which puts them in a position to learn even faster -- if they want to. Earlier in the thread, someone said would you put something in production without lab testing? As with everything else in networking, it depends. A large ISP, for example, will test a new IOS release in a lab, but they can't possibly have a lab that will let them see the effects of the change on tens of thousands of routers. This is true of router manufacturers as well. For very large networks, it may be possible to use true (i.e., Monte Carlo) simulation or mathematical analysis. But experience does have a major role in Internet backbone engineering. Let me simply say that backbone engineering is at a level far more specialized and complex than the CCIE level, and there haven't been formalized ways to learn it. _ Send and receive Hotmail on your mobile device: http://mobile.msn.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=44745t=44714 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Logic and Lab Rats [7:44653]
At 03:56 PM 5/21/02, Thompson Alton wrote: Do you remember Mainframe systems??? Yes. (And if you were asking Howard, the answer is emphatically YES ;-) HeHe! Heck I was doing some file transfer troubleshooting on a Mainframe towards the end of last year, I got elected because I knew the switches, routers, lan/wan protocols, sniffers, nethealth, openview and somehow I recalled some of the MVS things I did 15 years ago. The mainframe people on both sides of the circuit were blaming it on the network, and our main MVS guy was going on vacation for a couple of weeks. I was able to prove that it was an MVS application problem. The main point here is that there is a heck of a lot more to think about when running a network than to worry about what the cisco equipment is doing. Do you remember LU and PU and logic controllers?? Yes. Do they all work the same as IP networks or VOIP and IP telephony networks? Yes, pretty much. Networking 30, 20, 10 years ago dealt with the same stuff we're still dealing with today: layers cables wireless (not as much as there is now, but definitely some) circuits (both virtual and real) connectionless versus connection-oriented reliability versus low overhead connection establishment and teardown flow control windowing packetization signaling error detection error correction ACKs and NACKs and WAKs (WAKs kind of fell out of favor) dynamic and static addressing dynamic and static routing pesky users security (although the old-timers should have done better with this ;-) network management transferring files and other data database lookups You get the picture. So Pricilla are you saying that there are more than 7 layers in the protocol stack? Mike Mandulak NCIA (not certified in anything ;-) Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=44688t=44653 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: CCIE- I WILL BE [7:43969]
Here my favorite. About 10 years ago at a customer site a user was had a non-IBM token ring card, the manufacturer of the NIC wanted to prove that it could make a faster T/R card than IBM so they set the bridge priority bit on every packet. Then to top it off the user had installed a screen saver for their workstation and had the files installed to their home directory on the server. It was an early version of After Dark that constantly access the hard drive. Whenever the screen saver kicked in it brought the network to it's knees. - Original Message - From: Chuck To: Sent: Monday, May 13, 2002 10:28 PM Subject: Re: CCIE- I WILL BE [7:43969] my favorite story was the company whose network went down every morning for a few minutes just about the time the work force was sitting down, turning on their PC's, and getting ready for the day. Now the obvious conclusion is it's just busy that time of day Except that it didn't necessarily happen every day. To make a long story short, a couple of power users had decided they needed more data jacks in their area, had purchased some switch or other at one of the chain stores, and dual homed it into the LAN infrastructure. Being conservation conscious folks, they powered down all their equipment when they went home for the day, and turned it on every morning when they came in. the result was a campus wide spanning tree recalculation every time they brought their switch on line. I forget how the customer told me this was discovered. Priscilla Oppenheimer wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... And add to that cranky users who are entirely dependent on the network but won't tell you the whole story when reporting problems. ;-) Priscilla At 09:52 PM 5/12/02, Michael L. Williams wrote: Larry Letterman wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... A 40 router lab is nice, but its not the same as troubleshooting a production network with 20,000 + users at multiple sites. Here here and to add to that. ... a production network with 20,000+ users at multiple sites... running a variety of multiprotocol, quirky, sometimes custom-written (read: homemade) applications that are trying to do whatever on the network coupled with devices from whatever manufacturers that don't play nice (oh, you need this device in it's own VLAN because broadcast traffic makes it crash), etc, etc Mike W. Priscilla Oppenheimer http://www.priscilla.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=44218t=43969 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Is IGRP actually supported by other vendors? [7:43994]
Lamme's CCNA study guide states that the courde and exam only covers distance-vector routing protocols (RIP and IGRP). - Original Message - From: Priscilla Oppenheimer To: Sent: Monday, May 13, 2002 1:27 PM Subject: Re: Is IGRP actually supported by other vendors? [7:43994] Well, it occurs to me that IGRP would be easy to implement even without Cisco's permission. ;-) It's a simple protocol, for one thing. Also, the Rutgers paper that describes IGRP has been out for years. Cisco never objected to it. EIGRP would not be easy to implement without Cisco's blessings, developer support, licensed code, etc. We have probably all tried to figure out some detail of EIGRP or other and run into a brick wall. (For example, what does an router EIGRP really do with the MTU that is passed around in Updates? ;-) On a related tangent, will they remove IGRP from CCNA? I'm teaching a custom CCNA class next month, using my own materials. I find it annoying that I have to sort of downgrade my materials to teach IGRP theory and hands-on instead of the EIGRP I would prefer to teach and is already in my materials. But I think I'm right that CCNA expects IGRP and not EIGRP? Thx Priscilla At 04:02 AM 5/13/02, nrf wrote: In-line wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Nokia might support it, but I have been (fairly reliably) told that Cisco will *not* be supporting IGRP as of one of the newest IOS releases. I can't find the announcement on CCO (if there is one), so take with a grain of salt, but a Cisco instructor was quite adamant about this last week. That makes sense, considering it's literally been years since I've actually seen a bonafide production network running IGRP. So it makes sense that Cisco is finally ditching this dead wood. But I'm not asking this question because I'm champing at the bit to install a mixed Cisco/Nokia IGRP network. No, I'm asking because if it's true that Nokia really does support IGRP, then that begs the question - what other supposedly Cisco-proprietary technologies are like this too? I'm not talking about situations like what Howard stated where Cisco actually has an agreement to provide its technology to other vendors (somehow I doubt that Cisco and Nokia have such an agreement), but I'm talking about full-blown vendor compatibility between some other vendor and Cisco. For example, does anybody know of another vendor that supports, say, EIGRP? Or CDP? Now you might say that it would be impossible for another vendor to support these technologies, but, hey, Nokia apparently somehow managed to support IGRP, so why exactly couldn't somebody else support, say, EIGRP? JMcL - Forwarded by Jenny Mcleod/NSO/CSDA on 13/05/2002 04:44 pm - nrf Sent by: [EMAIL PROTECTED] 13/05/2002 01:42 pm Please respond to nrf To: [EMAIL PROTECTED] cc: Subject:Is IGRP actually supported by other vendors? [7:43994] Is this part of a business decision process?: Just found this while surfing around. As a network device, the Nokia IP330 supports a comprehensive suite of IP-routing functions and protocols, including RIPv1/RIPv2, IGRP, OSPF and BGP4 for unicast traffic... http://www.nokia.com/securitysolutions/platforms/330.html Every piece of literature I've ever read has stated without fail that IGRP is proprietary to Cisco. Yet here's Nokia brazenly claiming that they in fact support IGRP. What's up with that? Unfortunately I don't have an Ipso box lying around that I can actually experiment with. Can anyone confirm whether this is true and whether it provides complete interoperability with Cisco? Priscilla Oppenheimer http://www.priscilla.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=44081t=43994 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Fw: Is IGRP actually supported by other vendors? [7:43994]
Forgot to send this to list as well. - Original Message - From: Mike Mandulak To: Priscilla Oppenheimer Sent: Monday, May 13, 2002 4:13 PM Subject: Re: Is IGRP actually supported by other vendors? [7:43994] Lammle refers to EIGRP as being a Hybrid of distance-vector and link state. He only gives a brief mention of EIGRP and says to refer to the CCNP study guide for more info. - Original Message - From: Priscilla Oppenheimer To: Sent: Monday, May 13, 2002 3:19 PM Subject: Re: Is IGRP actually supported by other vendors? [7:43994] At 02:44 PM 5/13/02, Mike Mandulak wrote: Lamme's CCNA study guide states that the courde and exam only covers distance-vector routing protocols (RIP and IGRP). If it only covers distance-vector, then it could cover EIGRP also. EIGRP is also distance-vector. I don't think the test does cover it, but it's not because the test only covers distance-vector. It's probably because of all the extra features in EIGRP, such as the diffusing update algorithm (DUAL), with the feasible successors and all that other BS. Come to think of it, maybe I'm glad I don't have to cover it! ;-) - Original Message - From: Priscilla Oppenheimer To: Sent: Monday, May 13, 2002 1:27 PM Subject: Re: Is IGRP actually supported by other vendors? [7:43994] Well, it occurs to me that IGRP would be easy to implement even without Cisco's permission. ;-) It's a simple protocol, for one thing. Also, the Rutgers paper that describes IGRP has been out for years. Cisco never objected to it. EIGRP would not be easy to implement without Cisco's blessings, developer support, licensed code, etc. We have probably all tried to figure out some detail of EIGRP or other and run into a brick wall. (For example, what does an router EIGRP really do with the MTU that is passed around in Updates? ;-) On a related tangent, will they remove IGRP from CCNA? I'm teaching a custom CCNA class next month, using my own materials. I find it annoying that I have to sort of downgrade my materials to teach IGRP theory and hands-on instead of the EIGRP I would prefer to teach and is already in my materials. But I think I'm right that CCNA expects IGRP and not EIGRP? Thx Priscilla At 04:02 AM 5/13/02, nrf wrote: In-line wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Nokia might support it, but I have been (fairly reliably) told that Cisco will *not* be supporting IGRP as of one of the newest IOS releases. I can't find the announcement on CCO (if there is one), so take with a grain of salt, but a Cisco instructor was quite adamant about this last week. That makes sense, considering it's literally been years since I've actually seen a bonafide production network running IGRP. So it makes sense that Cisco is finally ditching this dead wood. But I'm not asking this question because I'm champing at the bit to install a mixed Cisco/Nokia IGRP network. No, I'm asking because if it's true that Nokia really does support IGRP, then that begs the question - what other supposedly Cisco-proprietary technologies are like this too? I'm not talking about situations like what Howard stated where Cisco actually has an agreement to provide its technology to other vendors (somehow I doubt that Cisco and Nokia have such an agreement), but I'm talking about full-blown vendor compatibility between some other vendor and Cisco. For example, does anybody know of another vendor that supports, say, EIGRP? Or CDP? Now you might say that it would be impossible for another vendor to support these technologies, but, hey, Nokia apparently somehow managed to support IGRP, so why exactly couldn't somebody else support, say, EIGRP? JMcL - Forwarded by Jenny Mcleod/NSO/CSDA on 13/05/2002 04:44 pm - nrf Sent by: [EMAIL PROTECTED] 13/05/2002 01:42 pm Please respond to nrf To: [EMAIL PROTECTED] cc: Subject:Is IGRP actually supported by other vendors? [7:43994] Is this part of a business decision process?: Just found this while surfing around. As a network device, the Nokia IP330 supports a comprehensive suite of IP-routing functions and protocols, including RIPv1/RIPv2, IGRP, OSPF and BGP4 for unicast traffic... http://www.nokia.com/securitysolutions/platforms/330.html Every piece of literature I've ever read has stated without fail that IGRP is proprietary to Cisco. Yet here's Nokia brazenly claiming that they in fact support IGRP. What's up with that? Unfortunately I don't have an
Re: Help! Confreg setting put to 0x1102 on 1700 [7:41819]
Set the baud rate to 4800. - Original Message - From: Richard Dennard To: Sent: Thursday, April 18, 2002 9:30 AM Subject: Help! Confreg setting put to 0x1102 on 1700 [7:41819] Help please...I set the confreg incorrectly on 1700 and now can't get it back up with hyperterm. Does anyone know what term settings for this confreg (0x1102) should look like. Or any other way to get the router back to default setting of 0x2102. Thanks for your help. Richard Dennard Tele 321-383-0705 ext 246 Cell 321-403-6881 Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=41839t=41819 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Is cable network really a shared medium? [7:38705]
Good post. One minor correction, the COM21 modems are DOCSIS 1.1 certified. - Original Message - From: bergenpeak To: Sent: Tuesday, March 19, 2002 9:53 AM Subject: Re: Is cable network really a shared medium? [7:38705] Hi Sam, The shared vs non-shared issue DSL providers mention is somewhat misleading. In any residential cable or DSL network, you will have stat muxing. In a cable network, this happens on the HFC network. In a DSL network, this happens at the Agg router (the one that terminates all of those DSL connections). The Internet is one big stat mux. In either the DSL or Cable approach, the customer observed performance will be a result of many factors, including access network design (how many subs share the cable or agg router), the behaviors of these other users, the regional network design, the size and types of peering connections, and where the users are actually surfing too. My house has a long driveway that only I use. Does that mean I'll get to work faster than the neighbors down the street which live in an apartment complex and share a driveway with other folks? In both approaches, one can prioritize traffic or partition bandwidth to certain groups of users. The current standard for how IP/ethernet frames are transmitted over an HFC network is defined via the DOCSIS 1.0 spec. This specification is available at www.cablelabs.com. This spec defines how to support best-effort IP transport. Support for additional features, include QoS, is defined in the DOCSIS 1.1 spec. This document is also available at the above web site. Some details about DOCSIS cable networks: * On the HFC network, a single downstream channel can support ~25-35 Mb/s (depending on the modulation being used). * The upstream connection typically can support between 5-10 Mb/s (depending on modulation and the size of the channel). * The cable operator can opt, based on RF combining, how many homes (fiber nodes) share a downstream or upstream.When service is initially launched in an area, an operator might combine several nodes together and as the take rate increases, reduce the amount of combining (which effectovely reduces the number of customers who share the bandwidth). * When a cable modem is brought online, it gets an IP address via DHCP and then is loaded with configuration information (IP, L2, and L4 filters), network management, etc information. These filters prevent issues which arise when DHCP servers are running in a customer's home, prevents my NETBIOS traffic from being seen by neighbors, etc. There are other technologies still deployed by cable operators to support HSD (LanCity, Motorola CDLP, Com21, etc.) which may not operate the same as DOCSIS. Hope this helps. sam sneed wrote: I just changed services from DSL to cable modem. I have heard from people, including verizon, that cable is not as secure as DSL becuase it is over a shared medium. I connected to my cable modem and fired up my packet sniffer. I did not see anyone elses traffic on the line so i am assuming the bandwith is shared( a known fact about cable access) but is somehow filtered at the cable modem(bridge). Does anyone know if this assumption is true and the inside details of the how data is transmitted over the cable network? A link to a whitepaer would be great. thanks Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=38813t=38705 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Latency in Telnet, intervlan routing [7:38187]
It may seem obvious but double check the subnet masks on the servers. - Original Message - From: Mason To: Sent: Friday, March 15, 2002 12:17 AM Subject: Re: Latency in Telnet, intervlan routing [7:38187] Ok, so here is the status: Sniffer traces show that the latency occurs when I do telnet (regardless using IP or Netbios name) to three specific Unix servers. If I do telnet to another device on the same subnet, I have no problems. That eliminates any routing issues, correct ? But what the three servers, independent of each others have in common... can't understand that one. Mason wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... I do Telnet from a client on VLAN1 and I reach the server just fine. VLAN1 is where the server is also connected to. I do Telnet from any other VLAN: Telnet takes a long time, then it times out. That tells me it is something in the InterVLAN routing. What would be the next step to troubleshoot the problem ? I look into the Cat 5000 configuration but I can't see any relevant changes that caused the problem. If I use a Sniffer, I noticed a delta time larger for the Telnet. However, I don't see any brodcast that could such delay. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=38599t=38187 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: VLoFR and atm popularity [7:38003]
Out of curiosity, what hardware/protocol do you use for an OC-192? - Original Message - From: Mike Bernico To: Sent: Tuesday, March 12, 2002 5:28 PM Subject: RE: VLoFR and atm popularity [7:38003] I work for a large ISP. As far as I'm concerned there is no such thing as a high speed ATM link. In the cisco carrier class ATM world oc-12 is as fast as you go. Unless of course you use the mgx 8850, the biggest piece of junk ever painted blue and stamped with a bridge. ATM is still a great way to do statistical multiplexing, a great revenue stream for carriers and popular among the connect all the sites in my enterprise together with DS3s crowd. ATM circuit emulation is darn handy for legacy video. It's days are numbered in larger networks. It's all but extinct in the OC-12 networks, but it's going to be around for a while for smaller networks. Mike --- Mike Bernico [EMAIL PROTECTED] Illinois Century Network http://www.illinois.net (217) 557-6555 -Original Message- From: Larry Letterman [mailto:[EMAIL PROTECTED]] Sent: Tuesday, March 12, 2002 3:00 PM To: [EMAIL PROTECTED] Subject: RE: VLoFR and atm popularity [7:38003] quite possibly because the big telecom providers connect most of their pops/CO's with high speed atm links... Larry Letterman Cisco Systems [EMAIL PROTECTED] -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Patrick Ramsey Sent: Tuesday, March 12, 2002 12:25 PM To: [EMAIL PROTECTED] Subject: VLoFR and atm popularity [7:38003] Cisco support vlan tagging over frame circuits? I was looking at a Tierra networks router and it was listed as one of it +'s. Does Cisco even support this? This kinda creeps up even further on the +'s of atm and how long atm is going to survive. Other than being capable of joining elans at oen fac. from another, can anyone even think of why atm still exists? With wdm and all the newer technology coming around the corner, why is atm still so saught after for long distance links? -Patrick Confidentiality DisclaimerThis email and any files transmitted with it may contain confidential and /or proprietary information in the possession of WellStar Health System, Inc. (WellStar) and is intended only for the individual or entity to whom addressed. This email may contain information that is held to be privileged, confidential and exempt from disclosure under applicable law. If the reader of this message is not the intended recipient, you are hereby notified that any unauthorized access, dissemination, distribution or copying of any information from this email is strictly prohibited, and may subject you to criminal and/or civil liability. If you have received this email in error, please notify the sender by reply email and then delete this email and its attachments from your computer. Thank you. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=38026t=38003 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: VLoFR and atm popularity [7:38003]
Do you think I need a couple for my home lab? The largest I've worked with are oc-3's. - Original Message - From: Mike Bernico To: Mike Mandulak ; Sent: Wednesday, March 13, 2002 12:24 AM Subject: RE: VLoFR and atm popularity [7:38003] Heh, for only about $240,000 list you too can own a 1 port oc-192 POS card for a 124xx series GSR that will do not only PPP and HDLC over sonet, but also frame relay encapsulation... Seriously though, we aren't ready for 10Gig yet, but when the time comes I'm considering using 10 Gig E between our core routers instead. I'm not sure how serious I am about that, but the line cards will be less than half the cost. Anyone other SPs out there considering that? Mike -Original Message- From: Mike Mandulak [mailto:[EMAIL PROTECTED]] Sent: Tue 3/12/2002 5:14 PM To: [EMAIL PROTECTED] Cc: Subject: Re: VLoFR and atm popularity [7:38003] Out of curiosity, what hardware/protocol do you use for an OC-192? - Original Message - From: Mike Bernico To: Sent: Tuesday, March 12, 2002 5:28 PM Subject: RE: VLoFR and atm popularity [7:38003] I work for a large ISP. As far as I'm concerned there is no such thing as a high speed ATM link. In the cisco carrier class ATM world oc-12 is as fast as you go. Unless of course you use the mgx 8850, the biggest piece of junk ever painted blue and stamped with a bridge. ATM is still a great way to do statistical multiplexing, a great revenue stream for carriers and popular among the connect all the sites in my enterprise together with DS3s crowd. ATM circuit emulation is darn handy for legacy video. It's days are numbered in larger networks. It's all but extinct in the OC-12 networks, but it's going to be around for a while for smaller networks. Mike --- Mike Bernico [EMAIL PROTECTED] Illinois Century Network http://www.illinois.net (217) 557-6555 -Original Message- From: Larry Letterman [mailto:[EMAIL PROTECTED]] Sent: Tuesday, March 12, 2002 3:00 PM To: [EMAIL PROTECTED] Subject: RE: VLoFR and atm popularity [7:38003] quite possibly because the big telecom providers connect most of their pops/CO's with high speed atm links... Larry Letterman Cisco Systems [EMAIL PROTECTED] -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Patrick Ramsey Sent: Tuesday, March 12, 2002 12:25 PM To: [EMAIL PROTECTED] Subject: VLoFR and atm popularity [7:38003] Cisco support vlan tagging over frame circuits? I was looking at a Tierra networks router and it was listed as one of it +'s. Does Cisco even support this? This kinda creeps up even further on the +'s of atm and how long atm is going to survive. Other than being capable of joining elans at oen fac. from another, can anyone even think of why atm still exists? With wdm and all the newer technology coming around the corner, why is atm still so saught after for long distance links? -Patrick Confidentiality DisclaimerThis email and any files transmitted with it may contain confidential and /or proprietary information in the possession of WellStar Health System, Inc. (WellStar) and is intended only for the individual or entity to whom addressed. This email may contain information that is held to be privileged, confidential and exempt from disclosure under applicable law. If the reader of this message is not the intended recipient, you are hereby notified that any unauthorized access, dissemination, distribution or copying of any information from this email is strictly prohibited, and may subject you to criminal and/or civil liability. If you have received this email in error, please notify the sender by reply email and then delete this email and its attachments from your computer. Thank you. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=38074t=38003 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: 2950-24 giving me strange symbols [7:37724]
Well it's not really an opinion, it's a fact. We could readily reproduce the
problem. Cisco confirmed that there was a problem and told us to upgrade,
after we did the issue went away.
- Original Message -
From: Ismail Al-Shelh
To:
Sent: Sunday, March 10, 2002 7:25 AM
Subject: RE: 2950-24 giving me strange symbols [7:37724]
Hello Mike I appreciate your openion .. I need more people to give me more
comments, this is would be great to know the options
Ismail Al-shelh,
Thanks Alot
-Original Message-
From: Mike Mandulak [mailto:[EMAIL PROTECTED]]
Sent: Saturday, March 09, 2002 6:41 PM
To: [EMAIL PROTECTED]
Subject: Re: 2950-24 giving me strange symbols [7:37724]
There were some bugs with 12.0(5) with regards to hyperterm, causing the
switch to reboot was one of them. Try upgrading.
- Original Message -
From: Ismail Al-Shelh
To:
Sent: Saturday, March 09, 2002 9:12 AM
Subject: 2950-24 giving me strange symbols [7:37724]
Hello all
I have two Cat 2950-24 switches , when I connect to the first switch
through hyper terminal , something strange happening to me , that
strange
thing is when I try to type any letter on the keyboard it gives me
another
letter or symbols I do not know why this is happening the only
thing
I
can see is when one of the fastethernet port state is up or down but
its
not allowing me to write proper letters , I tried to plug the cable out
and
plug it again it gives me the following
C2950 Boot Loader (CALHOUN-HBOOT-M) Version 12.0(5.3)WC(1), MAINTENANCE
INTERIM
SOFTWARE
Compiled Mon 30-Apr-01 07:56 by devgoyal
WS-C2950-24 starting...
Base ethernet MAC Address: 00:07:ec:02:67:00
Xmodem file system is available.
Initializing Flash...
flashfs[0]: 161 files, 2 directories
flashfs[0]: 0 orphaned files, 0 orphaned directories
flashfs[0]: Total bytes: 7741440
flashfs[0]: Bytes used: 2960896
flashfs[0]: Bytes available: 4780544
flashfs[0]: flashfs fsck took 6 seconds.
...done initializing flash.
Boot Sector Filesystem (bs:) installed, fsid: 3
Parameter Block Filesystem (pb:) installed, fsid: 4
Loading
flash:c2950-c3h2s-mz.120-5.3.WC.1.bin...##
#
File flash:c2950-c3h2s-mz.120-5.3.WC.1.bin uncompressed and installed,
entry p
oint: 0x8001
executing...
Restricted Rights Legend
Use, duplication, or disclosure by the Government is
subject to restrictions as set forth in subparagraph
(c) of the Commercial Computer Software - Restricted
Rights clause at FAR sec. 52.227-19 and subparagraph
(c) (1) (ii) of the Rights in Technical Data and Computer
Software clause at DFARS sec. 252.227-7013.
cisco Systems, Inc.
170 West Tasman Drive
San Jose, California 95134-1706
Cisco Internetwork Operating System Software
IOS (tm) C2950 Software (C2950-C3H2S-M), Version 12.0(5.3)WC(1),
MAINTENANCE
INT
ERIM SOFTWARE
Copyright (c) 1986-2001 by cisco Systems, Inc.
Compiled Mon 30-Apr-01 07:56 by devgoyal
Image text-base: 0x8001, data-base: 0x8031A000
Initializing flashfs...
flashfs[1]: 161 files, 2 directories
flashfs[1]: 0 orphaned files, 0 orphaned directories
flashfs[1]: Total bytes: 7741440
flashfs[1]: Bytes used: 2960896
flashfs[1]: Bytes available: 4780544
flashfs[1]: flashfs fsck took 6 seconds.
flashfs[1]: Initialization complete.
Done initializing flashfs.
C2950 POST: System Board Test : Passed
C2950 POST: Ethernet Controller Test : Passed
C2950 POST: MII TEST : Passed
cisco WS-C2950-24 (RC32300) processor (revision B0) with 22260K bytes of
memory.
Processor board ID FAB0544P2EE
Last reset from system-reset
Processor is running Enterprise Edition Software
Cluster command switch capable
Cluster member switch capable
24 FastEthernet/IEEE 802.3 interface(s)
32K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address: 00:07:EC:02:67:00
Motherboard assembly number: 73-5781-08
Motherboard serial number: FAB0544789W
Model revision number: B0
Model number: WS-C2950-24
System serial number: FAB0544P2EE
C2950 INIT: Complete
00:00:17: %SYS-5-RESTART: System restarted --
Cisco Internetwork Operating System Software
IOS (tm) C2950 Software (C2950-C3H2S-M), Version 12.0(5.3)WC(1),
MAINTENANCE
INT
ERIM SOFTWARE
Copyright (c) 1986-2001 by cisco Systems, Inc.
Compiled Mon 30-Apr-01 07:56 by devgoyal
--- System Configuration Dialog ---
At any point you may enter a question mark '?' for help.
Use ctrl-c to abort configuration dialog at any prompt.
Default settings are in square brackets '[]'.
Continue with configuration dialog? [yes/no]: oo4[j}~}{|u
As you see I was trying to say NO but this No came to be oo4[j}~}{|u
,
please
Re: no flames -- please (about NDA) [7:37796]
OK I read into the message a little more than I should have. But the point still remains that the lawyers bothered you without researching the issue. - Original Message - From: Howard C. Berkowitz To: Sent: Sunday, March 10, 2002 3:20 PM Subject: Re: no flames -- please (about NDA) [7:37796] Howard, this is *almost* hilarious, they tried to sue you on something that they stole from you? I wouldn't go so far as to say sue or stole. As far as I was concerned, the material was public domain. The lawyer demanded it be removed, but didn't actually threaten suit. Lots of nasty legal letters, when you are in the right, can be handled with a confident prove your point and we'll take you seriously. - Original Message - From: Howard C. Berkowitz To: Sent: Sunday, March 10, 2002 1:16 PM Subject: Re: no flames -- please (about NDA) [7:37796] First, THANK YOU for the image of MIB's as non-SNMP. It has given me an occasional giggle since I read it, which was especially helpful in the emergency room last night (when you are cutting chain, do NOT have a finger between the handles of the bolt cutters). But this is one of the reasons I personally don't take the CCIE lab--there's no way to accuse me of disclosing a question I've never seen. That doesn't preclude me from having CCIE's, or at least people who have taken the lab, review scenarios before they go live, and being very open to feedback once they are public. I have dealt with Cisco lawyers in a publishing context, and they definitely can be annoying. Of course, in that context, one can push back with a knowledge of case law on intellectual property. One of their complaints was that I published a graphic that was in a Cisco course--which turned out to be something I originally wrote, on which Cisco had no IPR, and I put into the Cisco University seminar as labeled supplemental material. It was a good slide and propagated into several Cisco courses, which was the first place the lawyer saw it. Hello, Please, don't over-interpret this email. I really would appreciate your opinion, I am not trying to be sarcastic, assertive or whatever. I blow my lab approximatelly 2 weeks ago. Since then, I have seen at least 3 or 4 questions taken varbatim from my scenario, posted to this group. Because some of those question confused me, I would like to discuss generic technology behind them on this forum. On the other hand, even participating in the thread started as verbatim copy of original CCIE LAB makes me feel, well, unconfortable, because I don't want to be accused of violation of NDA. I don't want to be even remotly associated with such possible accusition, by merely participating in those threads. But I still want to discuss with someone some issues, which IMHO are at least not clear, (or to be frank -- CCO has contradictory examples about them) without taking a risk of steping on the thin ice of NDA violation. Also, as I can tell that at least 4 threads are about problems taken verbatim from MY scenario, how many otheres threads are verbatim copies of OTHER scenarios? I felt much more confortable and free to be active here before my actual exam. Should I look for those cool flashlights, used by MIBs (not SNMP :-) to eradicate my memory about my scenario ? Any thoughts? Maybe someone from cisco will voice their opinon? Thanks, Przemek _ Commercial lab list: http://www.groupstudy.com/list/commercial.html Please discuss commercial lab solutions on this list. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=37811t=37796 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: 2950-24 giving me strange symbols [7:37724]
There were some bugs with 12.0(5) with regards to hyperterm, causing the
switch to reboot was one of them. Try upgrading.
- Original Message -
From: Ismail Al-Shelh
To:
Sent: Saturday, March 09, 2002 9:12 AM
Subject: 2950-24 giving me strange symbols [7:37724]
Hello all
I have two Cat 2950-24 switches , when I connect to the first switch
through hyper terminal , something strange happening to me , that strange
thing is when I try to type any letter on the keyboard it gives me another
letter or symbols I do not know why this is happening the only thing
I
can see is when one of the fastethernet port state is up or down but its
not allowing me to write proper letters , I tried to plug the cable out
and
plug it again it gives me the following
C2950 Boot Loader (CALHOUN-HBOOT-M) Version 12.0(5.3)WC(1), MAINTENANCE
INTERIM
SOFTWARE
Compiled Mon 30-Apr-01 07:56 by devgoyal
WS-C2950-24 starting...
Base ethernet MAC Address: 00:07:ec:02:67:00
Xmodem file system is available.
Initializing Flash...
flashfs[0]: 161 files, 2 directories
flashfs[0]: 0 orphaned files, 0 orphaned directories
flashfs[0]: Total bytes: 7741440
flashfs[0]: Bytes used: 2960896
flashfs[0]: Bytes available: 4780544
flashfs[0]: flashfs fsck took 6 seconds.
...done initializing flash.
Boot Sector Filesystem (bs:) installed, fsid: 3
Parameter Block Filesystem (pb:) installed, fsid: 4
Loading
flash:c2950-c3h2s-mz.120-5.3.WC.1.bin...##
#
File flash:c2950-c3h2s-mz.120-5.3.WC.1.bin uncompressed and installed,
entry p
oint: 0x8001
executing...
Restricted Rights Legend
Use, duplication, or disclosure by the Government is
subject to restrictions as set forth in subparagraph
(c) of the Commercial Computer Software - Restricted
Rights clause at FAR sec. 52.227-19 and subparagraph
(c) (1) (ii) of the Rights in Technical Data and Computer
Software clause at DFARS sec. 252.227-7013.
cisco Systems, Inc.
170 West Tasman Drive
San Jose, California 95134-1706
Cisco Internetwork Operating System Software
IOS (tm) C2950 Software (C2950-C3H2S-M), Version 12.0(5.3)WC(1),
MAINTENANCE
INT
ERIM SOFTWARE
Copyright (c) 1986-2001 by cisco Systems, Inc.
Compiled Mon 30-Apr-01 07:56 by devgoyal
Image text-base: 0x8001, data-base: 0x8031A000
Initializing flashfs...
flashfs[1]: 161 files, 2 directories
flashfs[1]: 0 orphaned files, 0 orphaned directories
flashfs[1]: Total bytes: 7741440
flashfs[1]: Bytes used: 2960896
flashfs[1]: Bytes available: 4780544
flashfs[1]: flashfs fsck took 6 seconds.
flashfs[1]: Initialization complete.
Done initializing flashfs.
C2950 POST: System Board Test : Passed
C2950 POST: Ethernet Controller Test : Passed
C2950 POST: MII TEST : Passed
cisco WS-C2950-24 (RC32300) processor (revision B0) with 22260K bytes of
memory.
Processor board ID FAB0544P2EE
Last reset from system-reset
Processor is running Enterprise Edition Software
Cluster command switch capable
Cluster member switch capable
24 FastEthernet/IEEE 802.3 interface(s)
32K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address: 00:07:EC:02:67:00
Motherboard assembly number: 73-5781-08
Motherboard serial number: FAB0544789W
Model revision number: B0
Model number: WS-C2950-24
System serial number: FAB0544P2EE
C2950 INIT: Complete
00:00:17: %SYS-5-RESTART: System restarted --
Cisco Internetwork Operating System Software
IOS (tm) C2950 Software (C2950-C3H2S-M), Version 12.0(5.3)WC(1),
MAINTENANCE
INT
ERIM SOFTWARE
Copyright (c) 1986-2001 by cisco Systems, Inc.
Compiled Mon 30-Apr-01 07:56 by devgoyal
--- System Configuration Dialog ---
At any point you may enter a question mark '?' for help.
Use ctrl-c to abort configuration dialog at any prompt.
Default settings are in square brackets '[]'.
Continue with configuration dialog? [yes/no]: oo4[j}~}{|u
As you see I was trying to say NO but this No came to be oo4[j}~}{|u,
please somebody tell me the secret.
Note: I do not have any problem with the second switch I can easily login
to
the user exec mode and configure it.
Ismail Al-shelh.
[GroupStudy.com removed an attachment of type application/ms-tnef]
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7i=37725t=37724
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Re: Cat 2950-24 [7:37374]
The portfast command does not turn STP off. The following is from CCO: Cisco added a feature named portfast or fast-start, which means the STP for this port will assume that the port is not part of a loop and will immediately move to the forwarding state, without going through the blocking, listening, or learning states. This command does not turn STP off. It just makes STP skip a few (unnecessary in this circumstance) steps in the beginning on the selected port. Note: The portfast feature should never be used on switch ports that connect to other switches, hubs, or routers. These connections may cause physical loops and it is very important that spanning tree go through the full initialization procedure in these situations. A spanning tree loop can bring your network down. If portfast is turned on for a port that is part of a physical loop, it can cause a window of time where packets could possibly be continuously forwarded (and even multiply) in such a way that the network cannot recover. - Original Message - From: Elijah Savage To: Sent: Wednesday, March 06, 2002 10:56 AM Subject: RE: Cat 2950-24 [7:37374] From my knowledge if you use this command (spanning-tree portfast) on a switch port it actually disable spanning tree for that port you should only do this if pc's are connected. So if you enable portfast you disable spanning tree for that port, if you disable portfast you enable spanning tree for that port. What this does with it enabled and a pc connected to it, it will keep the port from going through all the spanning tree phases you know like learning, listening, blocking etc it will take the switch 60 seconds to figure all this out before it starts passing traffic to that port. If portfast is enabled then it does not go through those phases and will only take approximately 3 seconds before traffic is passing according to Cisco. Someone please correct me if I am wrong here or missed something. Hope that helps www.digitalrage.org latest in Technical News and HowTo's www.digitalrage.org/phpBB Discussion Forums -Original Message- From: Cebuano [mailto:[EMAIL PROTECTED]] Sent: Wednesday, March 06, 2002 7:21 AM To: [EMAIL PROTECTED] Subject: Re: Cat 2950-24 [7:37374] You don't disable STP on the port to the PC because STP is only run between Layer2 devices. I believe you are referring to PortFast. Elmer - Original Message - From: Brian To: Sent: Wednesday, March 06, 2002 2:34 AM Subject: Re: Cat 2950-24 [7:37374] If you connect a computer to a switch port, it takes spanning tree a bit to allow traffic to pass. If this is an individual host being connected, you could try disabling spanning tree on the port.. Bri - Original Message - From: Ismail Al-Shelh To: Sent: Tuesday, March 05, 2002 10:44 PM Subject: Cat 2950-24 [7:37374] Dear all We have Pc with 3Com 3c90x-Tx 10/100 Network Card. This PC is installed with Dos 6.22 Operating System. We used to connect this to our 3com Switch1100 with the dos driver provided by 3Com. The sequence of loading the 3com driver to connect to 3com Switch1100 is as follows: LSL.COM 3C90X.EXE IPXODI.COM NETX.EXE F: LOGIN This is in a batch file and when we run the batch file it will connect immediately. The problem I am facing while connect to CISCO CATALYST 2950-24 port is that If I am running the same batch file it will not connect. I have to load the LSL.COM first and port on switch to which this computer is connected will be in Green color. But When I will load 3c90x.exe immediately the port on the switch color becomes amber. I have to wait for 1 to 1.5 minutes for the port color to become green and after that if load IPXODI.COM and NETX.EXE then it will connect. I can see this because I am sitting in front of the Cisco Switch. In actual the end user will run the batch file sitting somewhere in his room and he will get a message Novell Netware Server not Found. Why this delay in connecting to Novell Netware through Cisco Switch. The same delay is not happening while we are connecting to 3Com Switch. We need you help and guidance to sort out this problem. Ismail Al-shelh [GroupStudy.com removed an attachment of type application/ms-tnef] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=37431t=37374 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: strange problem [7:37359]
3) The Telco disconnected themselves because they forgot to pay their own bill. - Original Message - From: Joe Morabito To: Sent: Tuesday, March 05, 2002 11:59 PM Subject: Re: strange problem [7:37359] 6) the crossing guard got a virus and is out sick today, now the packets don't know where to go 5) someone accidentally unplugged the internet 4) bill g$tes tried to upgrade the internet and it blue screened on him o.k. I am out of ideas... - Original Message - From: Chuck To: Sent: Tuesday, March 05, 2002 11:03 PM Subject: Re: strange problem [7:37359] David Letterman's top 10 reasons this customer can't browse the internet: 10) aliens are abducting the packets 9) someone experimenting in Tessla physics has created a time warp nearby. the packets will reach the internet tomorrow, or they may have been thrown back in time and have arrived before the internet was created 8) Art Bell is talking about this phenomenon at this very moment on his radio show 7) the server is temperamental and would rather talk to other people than your customer 6) through 2) make up your own. I have to stop because I have finally realized I will never have a successful career in comedy 1) there is an access list on the edge router that is wreaking havoc my best guess, never having seen configs or traceroutes, etc Chuck kaushalender wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Hi group I am facing strange problem one of customer whom we have given 128Kbps linkand connected on ppp ecapsulation. They r not able to browse the website.When i did traceroute and ping it was working fine and customer is able to reach the internet .But when i typed www.yahoo.com in the browser the browser was respoding website found waiting for reply and it keeps on waiting .Can somebody can help me in identifing that why http request is dieng or geting killed Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=37369t=37359 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: MPLS in CCIE [7:36682]
Tis a shame too. I ran a Vines network for about 8 years and have yet to find a better protocol. - Original Message - From: ko haag To: Sent: Thursday, February 28, 2002 1:14 AM Subject: Re: MPLS in CCIE [7:36682] Same here, alot of my customers are still running most of these protocols and the only I have not seen in a while is Vines (to bad too, it was Better than Microsuck...sorry i meant soft.) :-P. David C Prall wrote: Steven, I don't know if it is outdated or not. I still have customers running Vines, DecNet, IPX and AppleTalk. Of course chaos, apollo and pup I haven't seen recently in the real world. David C Prall [EMAIL PROTECTED] http://dcp.dcptech.com - Original Message - From: Steven A. Ridder To: Sent: Wednesday, February 27, 2002 3:51 PM Subject: Re: MPLS in CCIE [7:36682] For routing and switching - none. Is it me or is the RS track getting outdated? It seems to cover technologies that, although are useful, not as current. -- RFC 1149 Compliant. Persio Pucci wrote in message news:[EMAIL PROTECTED]; How much of MPLS (if some at all) is covered in the CCIE exams? tks! Persio Pucci - CCNP UOL Inc. - Tecnologia [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=36791t=36682 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
re: CISCO INTERNSHIP.....CCIE..... [7:36091]
I think that's coming back to being more true again. A cert in a certain product is not what the better IT managers look for, systems in general are what they want. The proverbial they are looking for people that can do everything from network, Unix, NT, sniffers, and mainframes, etc. to give the higher paying jobs. Moral of the story Diversify. - Original Message - From: ko haag To: Sent: Monday, February 25, 2002 4:47 PM Subject: Re: CISCO INTERNSHIP.CCIE. [7:36091] I can remember in the old days when experience was more important than certs and having certs was a plus. Ko Steven A. Ridder wrote: I'm more than a CCNA. I was saying that back when I was a CCNA, I wouldn't have settled for less than 50K. But you did bring up the good point that in this economy a CCNA wouldn't get a job at 50K. I guess that it could be true. -- RFC 1149 Compliant. nrf wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Steven A. Ridder wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Well in the good old days of the economy, I made more than that even before becoming a CCNA. I would never settle for 50k, even in this econ., If you're just a CCNA and you won't settle for 50k now, well then you might be out of work for some time - a very very long time. especially as a CCIE. Plus, a CCIE IMO should already have exp., and lots of it. Otherwise it defeats the purpose of becoming a CCIE - cisco certified internet EXPERT! -- RFC 1149 Compliant. Sean Knox wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... A CCNA with little or no experience? Hardly. He's lucky to even land a job right now. I think this intern program is aimed at people new to the field. -Original Message- From: Steven A. Ridder [mailto:[EMAIL PROTECTED]] Sent: Thursday, February 21, 2002 12:50 PM To: [EMAIL PROTECTED] Subject: Re: CISCO INTERNSHIP.CCIE. [7:36091] A CCNA makes more than 50k. And you wouldn't have to pay your company to work for them and get training. Most companies pay you and pay for your training. -- RFC 1149 Compliant. Sean Knox wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... I've taken some classes at ICTP. From what I gather, their CCIE intern program works like this: you sign up for their CCIE program (which is not cheap I should add) and when you pass your CCIE written/lab (I vaguely remember that the CCIE written pass is all you need), you can work as a subcontractor for ICTP. You make substantially less money than a CCIE is worth, (I believe around $50,000, don't quote me on that) but for those with little or no experience (i.e., people enrolling in this program), it works out really well. Hopefully Mr. Lee could explain the program more in detail. - Sean -Original Message- From: Brian [mailto:[EMAIL PROTECTED]] Sent: Thursday, February 21, 2002 11:34 AM To: [EMAIL PROTECTED] Subject: Re: CISCO INTERNSHIP.CCIE. [7:36091] Perhaps its a new look on recruiting, they train u, get a slice of the dough for awhile?? Just speculating of course.. Brian On Thu, 21 Feb 2002, Cisco Nuts wrote: And upon finishing the program, how many years of slavery will we unfortunate ones be indebted to your gracious company? :-) Can you clarify this?? From: Jason Lee Reply-To: Jason Lee To: [EMAIL PROTECTED] Subject: CISCO INTERNSHIP.CCIE. [7:36091] Date: Thu, 21 Feb 2002 13:40:20 -0500 Hi all, My name is Jason Lee I currently work for ICTP located in anaheim california we are currently looking for few candidates to go through our very intense cisco training, also to note that upon finishing the program CEA (cisco expert academy)you can be eligible for an internship... we have information session going on every other friday, so if this sounds interesting to you, or if you need a lab to study for the ccie or ccnp please give me a call. Jason Lee IT specialist 714-783-1083 www.ICTP.com _ Join the worlds largest e-mail service with MSN Hotmail. http://www.hotmail.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=36458t=36091
Re: ethernet errors explained [7:33687]
I'm sure we'll keep seeing this problem for years to come... Auto negotiate does NOT work properly for a lot of NICs with older drivers. If you can, upgrade the driver on the RS6000. I know a while back IBM used the 3Com chipset in RS6000s, I don't know if that's true anymore but I bet it is. IBM may or may not have a driver that addresses this issue, in which case you are going to have to force the duplex on the RS6000 to full and do the same on the switch. - Original Message - From: Priscilla Oppenheimer To: Sent: Wednesday, January 30, 2002 3:38 PM Subject: Re: ethernet errors explained [7:33687] At 09:35 AM 1/30/02, Patrick Donlon wrote: Positive, if you look at the show port (on the other mail) you'll see there are no collisions This side is set (or auto-negotiated) to full duplex. Receiving while sending is not an error. This side should never report a collision. That doesn't mean that there can't be a duplex-mode mismatch. A mismatch could result in both sides reporting errors, just of different sorts. The other side could be set (or auto-negotiated) to half-duplex. You should check if it has errors, including collisions. If the half-duplex side does its normal CSMA/CD thing, senses no data, and happens to send while the other side is sending, the result is a collision from the half-duplex sender's viewpoint. The half-duplex side stops sending and backs off, in the middle of its frame. The result is probably a runt with either an alignment and/or Frame Check Sequence (FCS) error. The recipient receives an errored frame, even though it can't correlate this with a collision event. The recipient reports a runt and/or FCS or alignment error. Now, if you are sure that you don't have the obvious problem that everyone is going to assume you have (duplex mismatch), and you are still seeing alignment and FCS errors, then it's time to start investigating what else besides collisions could damage frames. An FCS means that the FCS placed in the frame by the sender doesn't match the FCS calculated by the recipient. In other words, a bit got changed. An alignment error means that the frame didn't end on an 8-bit boundary. In other words, a bit got dropped. Besides collisions, these errors could be caused by crosstalk, impedance mismatch, noise, running a power generator next the cables, lightning strikes, etc. Hope that makes sense. Please let us know the resolution. It will be a good learning experience. Priscilla Thanks Steven A. Ridder wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Are you sure switch and NIC are the same speed and duplex? Looks like port speed/duplex mismatch. Patrick Donlon wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Hi Everyone I trying to find some information on some Ethernet errors that I see on a port, see the text below. The machine is an RS6000 and was experiencing some performance problems, the NIC was set to auto negotiation and there were the usual errors. The port and NIC are now both fixed and the errors are increasing steadily, I've had a good search on the CCO but I can't find any explanation of what causes the errors, any advice will be appreciated Regards Patrick Priscilla Oppenheimer http://www.priscilla.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=33764t=33687 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: ethernet errors explained [7:33687]
Patrick, in my previous post I mentioned the problem being related to duplex mismatch but I missed the part where you said that you had fixed both sides. Make sure that there is no CAT3 wiring in the cabling somewhere. Try setting the NIC and port to 10/half and then to 10/full to see if there are errors. (side note: you can run 10/full on CAT3 wiring without errors) If there are, I would replace the NIC as the next step. - Original Message - From: Priscilla Oppenheimer To: Sent: Wednesday, January 30, 2002 3:38 PM Subject: Re: ethernet errors explained [7:33687] At 09:35 AM 1/30/02, Patrick Donlon wrote: Positive, if you look at the show port (on the other mail) you'll see there are no collisions This side is set (or auto-negotiated) to full duplex. Receiving while sending is not an error. This side should never report a collision. That doesn't mean that there can't be a duplex-mode mismatch. A mismatch could result in both sides reporting errors, just of different sorts. The other side could be set (or auto-negotiated) to half-duplex. You should check if it has errors, including collisions. If the half-duplex side does its normal CSMA/CD thing, senses no data, and happens to send while the other side is sending, the result is a collision from the half-duplex sender's viewpoint. The half-duplex side stops sending and backs off, in the middle of its frame. The result is probably a runt with either an alignment and/or Frame Check Sequence (FCS) error. The recipient receives an errored frame, even though it can't correlate this with a collision event. The recipient reports a runt and/or FCS or alignment error. Now, if you are sure that you don't have the obvious problem that everyone is going to assume you have (duplex mismatch), and you are still seeing alignment and FCS errors, then it's time to start investigating what else besides collisions could damage frames. An FCS means that the FCS placed in the frame by the sender doesn't match the FCS calculated by the recipient. In other words, a bit got changed. An alignment error means that the frame didn't end on an 8-bit boundary. In other words, a bit got dropped. Besides collisions, these errors could be caused by crosstalk, impedance mismatch, noise, running a power generator next the cables, lightning strikes, etc. Hope that makes sense. Please let us know the resolution. It will be a good learning experience. Priscilla Thanks Steven A. Ridder wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Are you sure switch and NIC are the same speed and duplex? Looks like port speed/duplex mismatch. Patrick Donlon wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Hi Everyone I trying to find some information on some Ethernet errors that I see on a port, see the text below. The machine is an RS6000 and was experiencing some performance problems, the NIC was set to auto negotiation and there were the usual errors. The port and NIC are now both fixed and the errors are increasing steadily, I've had a good search on the CCO but I can't find any explanation of what causes the errors, any advice will be appreciated Regards Patrick Priscilla Oppenheimer http://www.priscilla.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=33771t=33687 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Router problem inserting into token ring [7:33304]
That would be my first guess, you can shut down a ring by mixing speeds on a MAU. Can 2 PC's see each other? On the rings that I've worked on, once a PC entered the ring the light stays on so I would question the 15 second blink. Also check the duplex settings. (sorry couldn't resist) - Original Message - From: Charles Manafa To: Sent: Saturday, January 26, 2002 5:26 PM Subject: Re: Router problem inserting into token ring [7:33304] Have you checked the ring speed? CM - Original Message - From: Joseph Slawinski To: Sent: Saturday, January 26, 2002 8:26 PM Subject: Router problem inserting into token ring [7:33304] I am having a problem I know most of you folks could help me with. I have two 2502 routers and two token ring hubs. The hubs are dumb hubs, they have no network management capabilities. They don't even have external power supplies. The problem is I am able to hook up my computers to the hubs, the token ring cards will automatically attemt to insert themselves into the rings on the hubs. The relays light up every 15 seconds, so I know that is working ok. My problem is, I am unable to configure the routers to insert themselves into the ring. I have experience connecting hubs with network management modules into routers with no problems, but I somehow can't find a way to configure the routers to attach to these dumb hubs. I know that I'm missing something key here. I was thinking maybe the media filters I am using are defective, but I can't be sure. I know this question may sound dumb, but I have nowhere else to turn. Thank you in advance for your help, Joseph J. Slawinski ATT Global Networks Network Technician CCNP,CCNA,A+,Apple,HP,Canon Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=33324t=33304 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: 2924XL and Blue Screen of Death: Resolved [7:33203]
There are a ton of errors with 3Com NICs that have been addresses by loading the latest driver from 3Com. See http://www.cisco.com/warp/public/473/46.html#NIC for the details. - Original Message - From: John Neiberger To: Sent: Friday, January 25, 2002 12:17 PM Subject: RE: 2924XL and Blue Screen of Death: Resolved [7:33203] I don't think the issue is the switch, but the fact that spanning tree is running. I would guess that any feature that causes the network to be unavailable when one of these machines boots up would cause this problem. In fact, it happens even if you're not connected to the network at all. The problem appears to be a combination of issues with the NIC and the new Novell Client software. This problem does not occur in the previous software with these same NICs. John Bill Carter 1/25/02 10:13:01 AM I wonder if these cards would have problems with 3Com switches -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of John Neiberger Sent: Friday, January 25, 2002 9:58 AM To: [EMAIL PROTECTED] Subject: 2924XL and Blue Screen of Death: Resolved [7:33203] Well, sort of resolved. This turned out to be a known issue with Dell machines, specifically machines using a 3COM 3C905C NIC. They expect the network to be available almost immediately upon bootup and can't handle the delay caused by spanning tree. In some cases, even portfast did not reduce the time sufficiently. So, watch out for those 3COM NICs! John Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=33220t=33203 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: 2924XL and Blue Screen of Death: Resolved [7:33203]
Some of the most common problems that we ran into while converting from a hub to a switched environment (in no particular order) were NIC drivers out of date, auto negotiate failures (hard coding the speed/duplex if the switch and nic usually fixed that, alignment errors on the switch were usually a good indication of that). Portfast not being set on the switch. Users having their PC's moved to different floors without them checking the port settings on the switch. Finding CAT3 wiring sporadically throughout the building, Servers not having the NICs hard coded. There were plenty more... But the problem usually got fixed by something in that document link that I sent. - Original Message - From: John Neiberger To: ; Sent: Friday, January 25, 2002 5:43 PM Subject: Re: 2924XL and Blue Screen of Death: Resolved [7:33203] I found out that we do have the most recent drivers so it's either a feature to be fixed later or we just need to tweak the settings. Our LAN people are going to do some more testing and I'll let you all know what they find. John Mike Mandulak 1/25/02 3:10:49 PM Nah! They have their problems as well. You just need to load the latest NIC driver and check their settings. Just read the link that I posted earlier, it covers most of the issues discovered with switches and NICs (including Intel). http://www.cisco.com/warp/public/473/46.html#NIC - Original Message - From: Chuck Larrieu To: Sent: Friday, January 25, 2002 4:23 PM Subject: Re: 2924XL and Blue Screen of Death: Resolved [7:33203] gee, and my customer happens to have a 3com NIC. whaddaya know!! ( he has a generic PC, but what's sauce for the goose... - guess I will tell him to try an Intel NIC ) Chuck John Neiberger wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Well, sort of resolved. This turned out to be a known issue with Dell machines, specifically machines using a 3COM 3C905C NIC. They expect the network to be available almost immediately upon bootup and can't handle the delay caused by spanning tree. In some cases, even portfast did not reduce the time sufficiently. So, watch out for those 3COM NICs! John Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=33253t=33203 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Fw: VTP Trunking dangerous [7:32957]
- Original Message - From: Mike Mandulak To: 416South Sent: Wednesday, January 23, 2002 1:17 PM Subject: Re: VTP Trunking dangerous [7:32957] I don't have all the details but yes mixing versions is not a good thing. They did this at my previous company, it crippled the network for at least a day. (I'm just glad they did it before I was hired ;-) - Original Message - From: 416South To: Sent: Wednesday, January 23, 2002 11:55 AM Subject: VTP Trunking dangerous [7:32957] Anyone out there using VTP trunking ? I've just been approched by someone in our environment mentioning that they want to use trunking in another switchblock. Correct me if i'm wrong but this means setting up a VTP domain and all. from my understanding this implimentation could be very damaging via bpdu's giving a higher revision # clearing out a core switch config. I've not been a big fan of the VTP and trunking in a medium sized company so far what are your thoughts??? Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=32981t=32957 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: ACLs Applied to VLANs [7:26175]
VLAN access-groups act differently than routers, try switvhing it to an out ACL instead. MikeM - Original Message - From: Andrew L To: Sent: Tuesday, November 13, 2001 8:59 PM Subject: ACLs Applied to VLANs [7:26175] Hi everyone. I'm using a 2900 Catalyst and embarassingly enough, I cannot fully block myself from port 80. My ACL does block me from accessing the switch's Web interface, but I still surf the net. I'm on port F0/2 and my router is on F0/9. All ports are on the default VLAN. Any help appreciated. Thanks in advance! interface VLAN1 ip address 192.168.0.5 255.255.255.0 ip access-group 101 in no ip directed-broadcast no ip route-cache ! access-list 101 deny tcp any any eq www access-list 101 permit ip any any Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=26179t=26175 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Novell Encapsulations and Cat 5000 [7:17233]
Hunt if you did a yahoo search on +snap +ethernet +sap you would find the following link. http://osr5doc.sco.com:457/NetConfigG/configparamsC.framing_type.html Not trying to be harsh here but being able to quickly look up readily available information is a key part of becoming a good engineer. - Original Message - From: Hunt Lee To: Sent: Saturday, August 25, 2001 6:11 AM Subject: Novell Encapsulations and Cat 5000 [7:17233] It would be very great if someone can shed some light on this. It's a little bit off topic but thanks :) Firstly, what is the difference between the following Novell encapsulation types - Arpa, Sap, Novell-Ether and Snap? Do they have different fields in them (for instance, if analyzed with a Protocol Analyzer), and are they all for Ethernet? Secondly, whereabout can I find out more troubleshooting info. on a Cat 5000 - in particular, the LEDs (the green, orange and red lights). Thanks again. Regards, Hunt Lee IP Solution Analyst Cable and Wireless Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=17240t=17233 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Fw: Novell Encapsulations and Cat 5000 [7:17233]
Shoot I did it again. I did a reply instead of reply to all (as is proper on most lists). Who is the list owner here? - Original Message - From: Mike Mandulak To: Priscilla Oppenheimer Sent: Saturday, August 25, 2001 5:51 PM Subject: Re: Novell Encapsulations and Cat 5000 [7:17233] Hmmph... Then I stand corrected on a couple of points here, the obvious reference to incorrect info and more importantly for being critical of Hunt for asking. I must admit that I don't know all that much about Netware protocols as much of my time has been in Banyan (sigh), MS and big iron shops. - Original Message - From: Priscilla Oppenheimer To: Sent: Saturday, August 25, 2001 5:20 PM Subject: Re: Novell Encapsulations and Cat 5000 [7:17233] Don't use that reference. It's full of mistakes. It claims that an LLC SAP is Service Advertising Protocol. It puts the first two bytes of a Novell IPX network-layer header with 802.3. And so on. I wrote extensively about Ethernet frame types in my Troubleshooting Ethernet Networks study guide at www.certificationzone.com. Cisco has some good references on the subject also. The CIT class and Cisco Press CIT book do a good job with it. They also have a bunch of info about your other question, troubleshooting Cat 5000. Priscilla At 11:57 AM 8/25/01, Mike Mandulak wrote: Hunt if you did a yahoo search on +snap +ethernet +sap you would find the following link. http://osr5doc.sco.com:457/NetConfigG/configparamsC.framing_type.html Not trying to be harsh here but being able to quickly look up readily available information is a key part of becoming a good engineer. - Original Message - From: Hunt Lee To: Sent: Saturday, August 25, 2001 6:11 AM Subject: Novell Encapsulations and Cat 5000 [7:17233] It would be very great if someone can shed some light on this. It's a little bit off topic but thanks :) Firstly, what is the difference between the following Novell encapsulation types - Arpa, Sap, Novell-Ether and Snap? Do they have different fields in them (for instance, if analyzed with a Protocol Analyzer), and are they all for Ethernet? Secondly, whereabout can I find out more troubleshooting info. on a Cat 5000 - in particular, the LEDs (the green, orange and red lights). Thanks again. Regards, Hunt Lee IP Solution Analyst Cable and Wireless Priscilla Oppenheimer http://www.priscilla.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=17270t=17233 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: catalyst 2900 XL got reset [7:15835]
Yep, that's the version that has the Hyperterm bug. - Original Message - From: Arun To: Sent: Tuesday, August 14, 2001 1:01 AM Subject: Re: catalyst 2900 XL got reset [7:15835] the version i am running is Version 12.0(5)XP cisco skin wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... This is a known bug. I do believe though that the latest IOS fixes it. What are you running? a wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... hi i was trying to access the 2900XL series switch through hyperterminal and strange thing happened ,it got reset by it on.did this happened with somebody else also ,just curious to know.what could be the reason Regards Arun Sharma Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=15993t=15835 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Fw: DE bits [7:15210]
- Original Message - From: Mike Mandulak To: Chuck Larrieu Sent: Wednesday, August 08, 2001 6:31 AM Subject: Re: DE bits [7:15210] That's what I thought, when I confronted them on it they basically said that since I have a full T1 all traffic will go through. But my Q is if it has DE set through to their CO, does the DE bit stay set as it traverses the internet and thru other providers? Even if it get transformed into say ATM frames or whatever on it's way? I think they are feeding me a line... - Original Message - From: Chuck Larrieu To: Mike Mandulak ; Sent: Wednesday, August 08, 2001 1:04 AM Subject: RE: DE bits [7:15210] nope. with a 0 CIR anything greater than 0 is DE. your telco is not guaranteeing that they will ever pass any of your traffic. Chuck -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Mike Mandulak Sent: Tuesday, August 07, 2001 9:17 PM To: [EMAIL PROTECTED] Subject: DE bits [7:15210] Do discard Eligible bits (DE) get set on lines that are full T1's? The circuit I'm looking at is a full T1 to one of my internet providers and when looking at the frame stats (using cisco LMI) I see that that the cir is set to zero which would mean that all frames leave my site with the DE bit set. Am I misunderstanding this? MikeM Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=15242t=15210 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Fw: DE bits [7:15210]
- Original Message - From: Mike Mandulak To: Tony Medeiros Sent: Wednesday, August 08, 2001 6:42 AM Subject: Re: DE bits [7:15210] Sort of... That's the way that I understood it to work. The LMI type is set to Cisco and when I issue the show frame-relay pvc command, the IOS report the cir as being set to 0. On of my other Internet connections through a different provider (also non-channelized T1) the cir is reported as being 768 which is what I would expect. - Original Message - From: Tony Medeiros To: Sent: Wednesday, August 08, 2001 1:14 AM Subject: Re: DE bits [7:15210] A Cisco router will never set the DE bits unless specifically told to do so with a frame relay DE list. The frame cloud sets the DE bit on your traffic if you exceed the CIR or burst committed data rate for your PVC. This means that if the cloud experiences congestion, the frames with the DE bits are the first into the bit bucket. Theoretically this is the way it's supposed to work. More times than not the frame cloud will mark your frames DE even if you not exceed you SLA. Then it's time to call the provider. Generally, DE bits have nothing to do with port speed. Port speed is just the speed of the link you have to the frame switch. Traffic shaping has more effect on the rate you send to each PVC. It's a little complicated. An easy way to show what the provider is giving you is to set up the traffic shaping to correspond to the SLA for the PVC. Then do a sho frame PVC to see the stats. DE marked frames and BECN's and FECN's, MAY be an indicator that you are not getting the SLA you should. These parameters are CRITICAL in voice over data applications. Does this help at all ?? Tony M. #6172 - Original Message - From: Mike Mandulak To: Sent: Tuesday, August 07, 2001 9:16 PM Subject: DE bits [7:15210] Do discard Eligible bits (DE) get set on lines that are full T1's? The circuit I'm looking at is a full T1 to one of my internet providers and when looking at the frame stats (using cisco LMI) I see that that the cir is set to zero which would mean that all frames leave my site with the DE bit set. Am I misunderstanding this? MikeM Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=15243t=15210 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Cat 6.5K error messages [7:15250]
Yes you will see that whenever someone reboots thier machin. To see if it's a duplex mismatch do a sho port stat and look for growing alignment errors on that port. - Original Message - From: Thompson, Robert D To: Sent: Wednesday, August 08, 2001 8:33 AM Subject: RE: Cat 6.5K error messages [7:15250] I would say that its some one joining or leaving...Look on your console and test it... Rob -Original Message- From: Wilson, Bradley [SMTP:[EMAIL PROTECTED]] Sent: 08 August 2001 13:25 To: [EMAIL PROTECTED] Subject: RE: Cat 6.5K error messages [7:15250] I thought these messages appeared whenever a station joins or leaves the switch - are you sure someone isn't just rebooting their PC? -Original Message- From: Patrick Donlon [mailto:[EMAIL PROTECTED]] Sent: Wednesday, August 08, 2001 7:33 AM To: [EMAIL PROTECTED] Subject: Cat 6.5K error messages [7:15241] I have a cat' that is giving me these messages on the console: 06:02:18 MET +02:00 %PAGP-5-PORTFROMSTP:Port 8/48 left bridge port 8/48 06:02:35 MET +02:00 %PAGP-5-PORTTOSTP:Port 8/48 joined bridge port 8/48. From the CCO I've read that it could be a duplex mis-match, faulty NIC, cable or mis-configuration. How can I find out from the switch stat's which is most likely? cheers Pat Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=15382t=15250 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: DE bits [7:15210]
OK good. The ISP in this case is a backbone carrier so the DE would get dropped when I get to the CO. Thanks! - Original Message - From: Chuck Larrieu To: Mike Mandulak ; Sent: Wednesday, August 08, 2001 9:59 AM Subject: RE: DE bits [7:15210] The DE bit is significant only on the frame cloud. yes, this can be transferred from carrier to carrier. for example, if you have a frame circuit between Portland OR and San Diego, CA you are crossing LATA boundaries, and a RBOC boundary, so must use at least two carriers. In that case, your CIR is significant end to end across the frame clouds of two carriers. in the case of an internet connection, one would hope that the ISP pop is in the same town, and that they use a different carrier onto the internet backbone, so there would be no transfer of the DE bit onto any internet backbone. I should clarify by saying that the CIR is significant only to your end to end circuit. The termination of that circuit into another router ends the layer two framing. Even if the data were forwarded by that router onto another frame circuit from the same carrier, a new layer two frame would still be built, and no DE bit would have been set. Zero CIR is not necessarily a bad thing. Lot's of companies do things like that to minimize their costs. OTOH, I thought most carriers these days were not selling zero CIR, for that same reason. Yes, your router will try to pump out a T1 worth of data if it has it. In general, though, chances are good that you are not attempting to fully utilize the line. It is only when your carrier frame cloud is seeing more traffic than it can handle that frames with the DE bit are dropped. HTH Chuck -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Mike Mandulak Sent: Wednesday, August 08, 2001 4:33 AM To: [EMAIL PROTECTED] Subject: Fw: DE bits [7:15210] - Original Message - From: Mike Mandulak To: Chuck Larrieu Sent: Wednesday, August 08, 2001 6:31 AM Subject: Re: DE bits [7:15210] That's what I thought, when I confronted them on it they basically said that since I have a full T1 all traffic will go through. But my Q is if it has DE set through to their CO, does the DE bit stay set as it traverses the internet and thru other providers? Even if it get transformed into say ATM frames or whatever on it's way? I think they are feeding me a line... - Original Message - From: Chuck Larrieu To: Mike Mandulak ; Sent: Wednesday, August 08, 2001 1:04 AM Subject: RE: DE bits [7:15210] nope. with a 0 CIR anything greater than 0 is DE. your telco is not guaranteeing that they will ever pass any of your traffic. Chuck -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Mike Mandulak Sent: Tuesday, August 07, 2001 9:17 PM To: [EMAIL PROTECTED] Subject: DE bits [7:15210] Do discard Eligible bits (DE) get set on lines that are full T1's? The circuit I'm looking at is a full T1 to one of my internet providers and when looking at the frame stats (using cisco LMI) I see that that the cir is set to zero which would mean that all frames leave my site with the DE bit set. Am I misunderstanding this? MikeM Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=15385t=15210 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: DE bits [7:15210]
I did call the telco since I'm the owner by inheritance and was concerned when I saw this. Apparently it's not a problem, I just never seen it before. - Original Message - From: Brian To: Mike Mandulak ; Sent: Wednesday, August 08, 2001 9:49 AM Subject: Re: DE bits [7:15210] I doubt the cir is set to zero, it almost certainly is set to a value below the 1.5 meg value, I'd suspect 768k perhaps. Whomever is the circuit owner can call the telco to find out. Brian - Original Message - From: Mike Mandulak To: Sent: Tuesday, August 07, 2001 9:16 PM Subject: DE bits [7:15210] Do discard Eligible bits (DE) get set on lines that are full T1's? The circuit I'm looking at is a full T1 to one of my internet providers and when looking at the frame stats (using cisco LMI) I see that that the cir is set to zero which would mean that all frames leave my site with the DE bit set. Am I misunderstanding this? MikeM Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=15386t=15210 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: DE bits [7:15210]
That's not true. The DE bit gets set when the bandwidth exceeds the CIR. I.E you can buy a 128K CIR with a burst to 1544K, the DE gets set when the bandwidth exceeds 128K. My concern came in when I saw the BW=0. Now when I do a debug lmi it show BW=1000. Anyone know the significance of the 1000? What does it stand for? 1000 whats? MikeM - Original Message - From: Michael Damkot To: Sent: Wednesday, August 08, 2001 7:58 PM Subject: RE: DE bits [7:15210] To Clarify, usually the DE bit is set at Half the CIR, since FR is usually only guaranteed to half the total bandwidth, therefore, the customer can use the total circuit, but if congestion occurs, Frames that are over half the CIR are the first to go.. But you also have to keep in mind there are other things in place to avoid lost data. IE BECN, FECN - Regards, Michael Damkot Technical Trainer Network Support Engineer II -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Tony van Ree Sent: Wednesday, August 08, 2001 3:47 PM To: [EMAIL PROTECTED] Subject: Re: DE bits [7:15210] Hi all, Put simply a DE (Discard Eligible) bit is set on anything above the CIR (Committed Information Rate) ie if it is not committed it is discard eligible. At least that's the way I understand it. Teunis, Hobart, Tasmania Australia On Wednesday, August 08, 2001 at 10:06:06 AM, Brian wrote: I doubt the cir is set to zero, it almost certainly is set to a value below the 1.5 meg value, I'd suspect 768k perhaps. Whomever is the circuit owner can call the telco to find out. Brian - Original Message - From: Mike Mandulak To: Sent: Tuesday, August 07, 2001 9:16 PM Subject: DE bits [7:15210] Do discard Eligible bits (DE) get set on lines that are full T1's? The circuit I'm looking at is a full T1 to one of my internet providers and when looking at the frame stats (using cisco LMI) I see that that the cir is set to zero which would mean that all frames leave my site with the DE bit set. Am I misunderstanding this? MikeM -- www.tasmail.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=15404t=15210 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Fw: DE bits [7:15210]
- Original Message - From: Mike Mandulak To: Michael Damkot ; Sent: Wednesday, August 08, 2001 9:05 PM Subject: Re: DE bits [7:15210] That's not true. The DE bit gets set when the bandwidth exceeds the CIR. I.E you can buy a 128K CIR with a burst to 1544K, the DE gets set when the bandwidth exceeds 128K. My concern came in when I saw the BW=0. Now when I do a debug lmi it show BW=1000. Anyone know the significance of the 1000? What does it stand for? 1000 whats? MikeM - Original Message - From: Michael Damkot To: Sent: Wednesday, August 08, 2001 7:58 PM Subject: RE: DE bits [7:15210] To Clarify, usually the DE bit is set at Half the CIR, since FR is usually only guaranteed to half the total bandwidth, therefore, the customer can use the total circuit, but if congestion occurs, Frames that are over half the CIR are the first to go.. But you also have to keep in mind there are other things in place to avoid lost data. IE BECN, FECN - Regards, Michael Damkot Technical Trainer Network Support Engineer II -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Tony van Ree Sent: Wednesday, August 08, 2001 3:47 PM To: [EMAIL PROTECTED] Subject: Re: DE bits [7:15210] Hi all, Put simply a DE (Discard Eligible) bit is set on anything above the CIR (Committed Information Rate) ie if it is not committed it is discard eligible. At least that's the way I understand it. Teunis, Hobart, Tasmania Australia On Wednesday, August 08, 2001 at 10:06:06 AM, Brian wrote: I doubt the cir is set to zero, it almost certainly is set to a value below the 1.5 meg value, I'd suspect 768k perhaps. Whomever is the circuit owner can call the telco to find out. Brian - Original Message - From: Mike Mandulak To: Sent: Tuesday, August 07, 2001 9:16 PM Subject: DE bits [7:15210] Do discard Eligible bits (DE) get set on lines that are full T1's? The circuit I'm looking at is a full T1 to one of my internet providers and when looking at the frame stats (using cisco LMI) I see that that the cir is set to zero which would mean that all frames leave my site with the DE bit set. Am I misunderstanding this? MikeM -- www.tasmail.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=15405t=15210 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Switch port failure on 3548 [7:15089]
The only way I can think that it would be a cable problem is if there was a short in the wire somewhere. Unplug the CAT5 from the suspect port, do a shut/no shut do you get the same result? Better still plug a PC into the port, does it stay up/up? Then plug a PC in another port with an FTP server on it and do some file transfers, then check for errors. MikeM - Original Message - From: Hans Stout To: Sent: Tuesday, August 07, 2001 7:51 AM Subject: Switch port failure on 3548 [7:15089] Hello colleagues, I have a Cisco 3548 switch and I suspect that one of the switch ports is not working. All 48 ports have a CAT5 cable connection, and all ports are patched to the respective wall outlets, there are no active users yet, so all the ports are down/down. When I do a shut/no shut on all the ports, I can see in the log that all ports except one show that the port goes up and then down. To my best knowledge, the fact that the port goes up/down after a shut/no shut shows that the port is ok. The port that doesn't work goes down right away. My question is: does this mean that the actual physical switch port is defective, or that the CAT5 cable attached to the switch isn't working, or that something on the path from the switch port to the wall outlet isn't working ? Thanks for your help in advance ! Regards, Hans _ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=15094t=15089 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Switch port failure on 3548 [7:15089]
Agreed, that would be the best method but as Hans said in a later message the switch is physicaly very far away. Hans if you can get someone who is onsite to unplug the CAT5 and do a shut/no shut you can see if the behavior changes. Otherwise it sounds like a road trip is in order. - Original Message - From: Michael To: Mike Mandulak ; Sent: Tuesday, August 07, 2001 9:19 AM Subject: RE: Switch port failure on 3548 [7:15089] Herr Stout, Another easy way of determining if the problem is with the port or the cable would be to plug both ends of the cat 5 cable(s) into a cable tester. The manner Mike proposes is legit but I would want to positively know that all pairs are 100%. Once you certify the cable as being good, then the port would probably be the problem. Hopefully it will be the cable...helluva lot cheaper! -Michael Vaughan Senior Network Engineer Predator-Hunter.com Inc. [EMAIL PROTECTED] -Original Message- From: Mike Mandulak Sent: Tue 8/7/2001 8:52 AM To: [EMAIL PROTECTED] Cc: Subject: Re: Switch port failure on 3548 [7:15089] The only way I can think that it would be a cable problem is if there was a short in the wire somewhere. Unplug the CAT5 from the suspect port, do a shut/no shut do you get the same result? Better still plug a PC into the port, does it stay up/up? Then plug a PC in another port with an FTP server on it and do some file transfers, then check for errors. MikeM - Original Message - From: Hans Stout To: Sent: Tuesday, August 07, 2001 7:51 AM Subject: Switch port failure on 3548 [7:15089] Hello colleagues, I have a Cisco 3548 switch and I suspect that one of the switch ports is not working. All 48 ports have a CAT5 cable connection, and all ports are patched to the respective wall outlets, there are no active users yet, so all the ports are down/down. When I do a shut/no shut on all the ports, I can see in the log that all ports except one show that the port goes up and then down. To my best knowledge, the fact that the port goes up/down after a shut/no shut shows that the port is ok. The port that doesn't work goes down right away. My question is: does this mean that the actual physical switch port is defective, or that the CAT5 cable attached to the switch isn't working, or that something on the path from the switch port to the wall outlet isn't working ? Thanks for your help in advance ! Regards, Hans _ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=15101t=15089 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
DE bits [7:15210]
Do discard Eligible bits (DE) get set on lines that are full T1's? The circuit I'm looking at is a full T1 to one of my internet providers and when looking at the frame stats (using cisco LMI) I see that that the cir is set to zero which would mean that all frames leave my site with the DE bit set. Am I misunderstanding this? MikeM Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=15210t=15210 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: MTU on the Internet [7:14380]
Sorry about that. Didn't realize that Reply to: doesn't get set to the list, most lists that I'm on do. - Original Message - From: Priscilla Oppenheimer To: Sent: Wednesday, August 01, 2001 8:09 PM Subject: Re: MTU on the Internet [7:14380] Send to the list, not me. At 07:35 PM 8/1/01, you wrote: This is a legacy default that prevented fragmentation on older transmission mediums I think SDLC was one of them, but not sure if that was one or not. See RFC879. - Original Message - From: Priscilla Oppenheimer To: Sent: Wednesday, August 01, 2001 5:40 PM Subject: Re: MTU on the Internet [7:14380] Have you done a search in Google? I would think you could find some info on this with some work. Let us know what you find out. ;-) My thought was that it would not be a good idea to use 572 bytes since so many Internet devices send 1500-byte Ethernet frames. The 572 bytes size would mean routers in the core of the Internet would have to do fragmentation and reassembly which would really slow things down and be a bad idea. So my guess is that the MTU is 1500 or greater wherever possible. Priscilla At 01:19 PM 7/31/01, Nabil Fares wrote: Greetings, What's the common/standard mtu on the internet backbone? At one point all ISPs used 572 size. Any internet resources you guys can point me to? Thanks, Nabil Priscilla Oppenheimer http://www.priscilla.com Priscilla Oppenheimer http://www.priscilla.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=14583t=14380 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: ATM Help [7:14305]
Here is a reference book for you: Analyzing Broadband Networks / by Mark A. Miller ISBN: 0072125322 It covers ATM, FR, SMDS etc. I have a few books written by him that I always reference. It is not Cisco specific though. - Original Message - From: William Harrison To: Sent: Monday, July 30, 2001 10:36 PM Subject: ATM Help [7:14305] Since this list seems to be graced with so my great authors (brown nosing) but well deserved!! I am hoping to find a text book on ATM. I would prefer Cisco Press however my ISBN searches have only come with some nubleus responses such as EIGRP and ATM routing arch. Could anyone help with a ISBN # Thanks Bill Harrison Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=14313t=14305 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
syn fin acls [7:11264]
Would there be any valid reason for having both the syn and fin flags set in the same packet? My IDS reports are saying that it is usually from a port scan. MikeM Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=11264t=11264 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
