Re: Switching exam question [7:23497]
so the risk of a bridge loop is better than a recalculation of spanning tree ;- sure, especially when you KNOW you're in a loop-free environment. of course, my motto is spanning tree bridging, don't leave home without it. I've seen goofy things happen without spanning tree or with partial spanning tree running in a looped environment. (don't ask about 'partial spanning tree' - I still can't figure out how they did that and why) And I've seen goofy things happen with spanning tree in big redundant environments, especially with respect to not being able to control which ports get disabled in a loop path. The morale of the story there is the path you want to have disabled (the redundant one between switches) will always be enabled, and vice versa (as in the uplink to the router will be disabled). _ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23608t=23497 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: X2 command on a Term Serv?? [7:23475]
Brian, Thank you very much for that information Best Regards Richard Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23609t=23475 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
VTY password on CatOS [7:23610]
Hello colleagues, does anybody know how to set the VTY password on a CatOS-based switch ? All I could find is the 'set password' command. 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=23610t=23610 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Netsys Baseliner [7:23611]
Hello colleagues, I am trying to find information about the Netsys Baseliner, as far as I know it is an EoL product and not available anymore. I know that there once was an evaluation CD; does anybody know if that CD is still available, or can I get it from somebody ? Or is somebody willing to sell his or her version (NT) to me ? 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=23611t=23611 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: VTY password on CatOS [7:23610]
Set pass should set the console, vty, and aux. with the same password. Brad Moss, CCNA Network Administrator CHRISTUS St. Joseph's Medical Center - South www.christushealth.org (903) 737-3160 [EMAIL PROTECTED] -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Hans Stout Sent: Saturday, October 20, 2001 4:27 AM To: [EMAIL PROTECTED] Subject: VTY password on CatOS [7:23610] Hello colleagues, does anybody know how to set the VTY password on a CatOS-based switch ? All I could find is the 'set password' command. Thanks for your help in advance. Regards, Hans _ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp _ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23615t=23610 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: How to upgrade the IOS of C2521?! [7:23498]
oh my... you'd refer a complete beginner to the website to learn how to download code over local serial links? :-( maybe from the TAC area, where the recipe and details were already laid out, but not from the documentation - you try it from the manuals...here's the 12.0 documentation for that: (to this day, I don't think I could do it from this information) http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/12cgcr/fun_c /fcprt2/fcimages.htm this is a great opportunity to teach someone 'how to' without actually being at their side, although the one of the hits on the search for 'copy tftp flash' did lead me to this page: http://www.cisco.com/warp/public/130/sw_upgrade_proc_flash.shtml -e- - Original Message - From: George Murphy CCNP, CCDP To: Sent: Friday, October 19, 2001 11:11 PM Subject: Re: How to upgrade the IOS of C2521?! [7:23498] Kenneth, now is a good time to get familiar with the Cisco website. You should download a TFTP server, check your router specs, match them to the right IOS according to the available matrix, download, start tftp, get into enable mode and #copy tftp flash ... It would be good to get the by the book instructions from the site or any other handy resources Kenneth Yeung wrote: Hi all, As a beginner, i am setting up home lab. Can anyone give me the detail procedure of how to upgrade the IOS of C2521. I got no problem with my C2503 because it has a Ethernet port for me to connect the PC to it. Kenneth _ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23616t=23498 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
VPN 3005 Concentrator/Filters [7:23617]
Anyone have this tweaked out yet as far as filters go? I want to only allow necessary traffic on the Public interface and drop everything else. Any help would be much appreciated. Thanks, Jeff Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23617t=23617 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Switching exam question [7:23497]
Hmm. Interesting. Which course are you referring to? I haven't seen that reference myself but I believe you. I have yet to disable STP on a trunk port myself or see it done by any of the many ISPs I have encountered in the last 3-4 years. Most people I have worked with consider the price of running STP mandatory insurance against loops (since you never know what's going to happen once you have completed the project). Although not a programmer myself several network programmers have given me the impression that most switch software is optimized for STP which leaves me to doubt that disabling it is going to buy you much increased efficiency. But I may be way off base. Is this something you have seen in the field? Leigh Anne Chisholm wrote: Actually, Cisco teaches that in certain circumstances in the Core, you want to disable Spanning Tree Protocol (STP). I don't have the courseware with me at the moment, but I guess the thinking is that with Core layer devices, you don't run anything extraneous that takes away from the primary role of high-speed packet switching. STP is considered extraneous when it's not required. Instead of me posting from Cisco's course material once I'm at home, why not search Cisco for this information... if you're interested in knowing more. -- Leigh Anne -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Jonathan Hays Sent: Friday, October 19, 2001 2:20 PM To: [EMAIL PROTECTED] Subject: Re: Switching exam question [7:23497] Yes. For the server to have a fully redundant connection it must have a second NIC to another switch and failover software in place. However, you are mistaken that anyone would normally disable STP on any trunk port, regardless of whether the switch is in the Core, Distribution, or Access layer. Piatnitchi Cristian wrote: Please see this link http://www.geocities.com/cristi_piatnitchi/ This is picture from the Cisco site. Could you explain me how the redundacy is achieved for the server present on this scheme ? In my opinion if there is no STP in the L2 core and nor a second connection from the server to the other switch cb there is no protection against of a failure of switch ca. So I consider is useless to have redundancy in the access and distribution layers. Am I wrong ? If yes why ? Thanks in advance Cristian Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23605t=23497 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Design Question - Spanning-tree Protocol. [7:23614]
Hi Folks, I have a design in which Cisco 3548 XL's are GBIC-stacked on various floors of a campus and are uplinked to a core Cat 6509 switch. The uplink from every floor stack is ether-channeled to the core via two parallel equal-cost paths. One uplink path starts forwarding and the other goes into blocking mode from each floor stack. Here is my confusion... If only one link of a 400 MBps full-duplex ether-channel fails from the forwarding path , will it invoke spanning-tree recalculation ??? Or will the 'now' sub-optimal path still remain in forwarding mode and the now more-bandwidth path remain in blocking mode ??? Since spanning-tree recalculation causes a lot of ripples throughout the switched network, I would assume that the latter were true. However, I would like to hear views from people who would think that the former scenario is more probable. Thanks very much. Aziz Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23614t=23614 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Switching exam question [7:23497]
-Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of EA Louie Sent: Saturday, October 20, 2001 12:43 AM To: [EMAIL PROTECTED] Subject: Re: Switching exam question [7:23497] so the risk of a bridge loop is better than a recalculation of spanning tree ;- sure, especially when you KNOW you're in a loop-free environment. CL: never underestimate the probability that what you KNOW will not remain true for long :- of course, my motto is spanning tree bridging, don't leave home without it. I've seen goofy things happen without spanning tree or with partial spanning tree running in a looped environment. (don't ask about 'partial spanning tree' - I still can't figure out how they did that and why) And I've seen goofy things happen with spanning tree in big redundant environments, especially with respect to not being able to control which ports get disabled in a loop path. The morale of the story there is the path you want to have disabled (the redundant one between switches) will always be enabled, and vice versa (as in the uplink to the router will be disabled). CL: this probably explains why The Powers That Be spend so much time trying to teach us how spanning tree works, and provide the ability to change bridge priorities. CCIE types are SUPPOSED to draw out their diagrams, and calculate the paths, and set the priorities so that the things you describe don't happen. The truth is, most of us, CCIE or otherwise, just muddle through. :- _ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23618t=23497 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Switching exam question [7:23497]
so the risk of a bridge loop is better than a recalculation of spanning tree ;- sure, especially when you KNOW you're in a loop-free environment. of course, my motto is spanning tree bridging, don't leave home without it. I've seen goofy things happen without spanning tree or with partial spanning tree running in a looped environment. (don't ask about 'partial spanning tree' - I still can't figure out how they did that and why) And I've seen goofy things happen with spanning tree in big redundant environments, especially with respect to not being able to control which ports get disabled in a loop path. The morale of the story there is the path you want to have disabled (the redundant one between switches) will always be enabled, and vice versa (as in the uplink to the router will be disabled). Perhaps not a general application, but the intercarrier exchange point operators have been pleading for switches where STP is off by default. Now, understand their environment is very controlled, with point-to-point or at most point-to-two-point links among routers through a common fabric. They use VLANs as points on a virtual patch panel. They may use them to distinguish among customers (who are ISPs), and possibly between multicast and unicast services. There was a presentation at the last Washington NANOG on this, by Paul Vixie. There is even more continuing discussion in the European Exchange Point Operators mailing list under RIPE. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23619t=23497 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: IOS upgrade problem - 2621 [7:23526]
I have tried to use the tftpdnld at the rommon prompt and get the following error massage: Please reset before executing this command I key in all the parameter (IP address, tftp server address, etc). After reset, I issue the command tftpdnld, and get the same error message again. Any idea to solve this problem? Thanks. Francis - Original Message - From: John Neiberger To: Sent: Saturday, October 20, 2001 12:23 AM Subject: Re: IOS upgrade problem - 2621 [7:23526] If the router will not boot then you must do this from rommon mode. When the router is attempting to boot, issue a break using whichever keys your terminal software expects. When you get to a prompt, type tftpdnld in lowercase. This will show you a list of variables that need to be set for a tftp transfer to work properly. Connect the ethernet port on the router to your network (or laptop, or whatever has a valid image), set the necessary variables, and then type tftpdnld again. If all variables are set correctly the router will now begin a tftp transfer. When it is finished, type i or reset to reboot the router. HTH, John kwock99 10/19/01 9:57:44 AM I have upgraded the Router with the other IOS. After I download it to the router and it saved the new IOS to the flash successfully. After I power up the router, I get the error that the router does not have enought memory to run IOS. Anyone knows how to erase the new IOS and tftp back the old IOS to the router (2621). Thanks. Francis Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23620t=23526 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Gateway for VoIP [7:23219]
Thomas, I am by no means an expert in this category, but I have started working with AVVID recently. You should look into Cisco's IPKeyswitch IOS feature set. This feature set is available in 12.1(5) YD3 or 12.2(2) XB. The IPKeyswitch functionality will allow a more feature rich environment for your phone users. By employing 12.2.2XB on your 2600 series router and adding an NM-2V, 2-2port FXO WICS, and IP Phones with power (either power block or C3524-XL-EN-PWR) you will be able to make a very reasonable system lacking some key features. You keep referring to using IP Phones, but then you also mention regular phones in your original statement. Your 2600 is going to limit your ability to deploy in that case. The minimum router you would need is a 3640. You will need to set up all your dial patterns on the router so be sure that you are very comfortable with doing this or hire someone to do it for you. You will need to map actual DIDs to extension DID, set up inward dial maps and outward dialing maps, etc. Good luck! Matthew Pickens, CCNP, MCSE, SCP and working towards my CCIE and CCIP mailto:[EMAIL PROTECTED] *** Please remove noabuse- from the email address when emailing *** Thomas wrote: In my case, the frame circuit are already in place. It's just a matter of getting the most out of that frame relay link, like VoIP, H323 traffic for instant to save long distant call or video conferencing... Again, Thanks! Mark Odette II wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... OK, here's one more tip then... If the Overseas office is there, and the HQ is here or in some other geographically separate region, you probably will be best set up with a FR connection b/t the two sites. Anything else will probably be cost prohibitive, or will put too many hops in the picture to meet the latency requirements for voice. Good luck, Mark Odette II StellarConnection Services -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Thomas Sent: Thursday, October 18, 2001 8:25 PM To: [EMAIL PROTECTED] Subject: Re: Gateway for VoIP [7:23219] Thanks Mark! Your side notes actually answer my question. There's no doubt about having PBX at medium or large sites, and therefore a need for a T1/E1 channalized gateway for voice/fax between the router and the PBX. I am just concerning if I could do the scenario you just described for a small oversea office of 4 or 5 sale people, where they don't have a PBX, but still able to use the IP phones to talk to HQ using the WAN (VoIP) and still able to talk to a regular analog phone with the FXO gateway attached to the router. Thomas N. Mark Odette II wrote in message news:[EMAIL PROTECTED]... Thomas- You say that the site Does NOT have a PBX. If this means that they(users) all have Analog phones, and you want to give them the ability of IP phones, what exactly do you mean?? Please define your problem more clearly so that you might have a few suggested solutions thrown out. Just as a side note- If you have a 2600 Series router, and you want to put voice on it (VoIP, VoFR, VoATM) for the purpose of having no more than 4 people simultaneously calling 1 remote office, it is possible to connect 4 analog phones directly to it (on FXS ports) and have them dial out to the remote facility over a P-to-P WAN, saving LD costs. But this is a rather small scale, unscalable option, and they still wouldn't have PSTN access on the same phone. A second 2600 with 4 FXO ports would have to be added to the picture to give those 4 users access to the PSTN with a contrived dial-plan on the first 2600 pointing to the router with the FXO ports. To service users with VoIP and access to the PSTN, you WILL have to acquire some sort of separate Gateway/PBX/PABX. -Mark Odette II StellarConnection Services -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Thomas N. Sent: Tuesday, October 16, 2001 11:06 PM To: [EMAIL PROTECTED] Subject: Gateway for VoIP [7:23219] Hi All, I have a small site that doesn't have a PBX. This site has a Cisco 2600 router. I would like to integate the phone system with IP phones. I wonder if there is any network module for the Cisco 2600 router that acts as a gateway directly to the POTS (regular phones)? Thanks All! Thomas N. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23621t=23219 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: CCIE study Question : RIFs [7:22750]
JAmes, The RII bit is the first bit in the first byte of the source mac address and signifies whether a RIF is present. It is NOT contained in the RIF and indeed by definition cannot be. -Original Message- From: Pieter Jordaan [mailto:[EMAIL PROTECTED]] Sent: 19 October 2001 11:22 To: [EMAIL PROTECTED] Subject: Re: CCIE study Question : RIFs [7:22750] It is the RII bit which is set to one to indicate that the rif is present. The RII is in the header of the packet and indicates whether or not there is a rif. The rif below is valid James wrote in message news:[EMAIL PROTECTED]... Hello, I have been reading up on RIFs and one little part confuses me.. Says, if RIF is present the first bit of the first byte is set to 1 instead of 0. The RIF below I have is a valid RIF but the first bit of the first byte is 0 ?? Hope that someone can offer an explaination to this. I apologize if this topic is a rehash. Thanks for your time.. 0810.0012.00b3.00a0 __ Do You Yahoo!? Make a great connection at Yahoo! Personals. http://personals.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23622t=22750 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
EIGRP load balancing - variance command [7:23623]
I have tried some basic testing on the EIGRP load balancing. For simplicity, I only set up 4 router in order to get equal cost load balancing. LANA**R1 --R2 --R4 LANB || --R3 ***: Ethernet : Wan If I use the default setting for the bandwidth and delay, I can get two route from LAN A to LANB. R1--R2--R4 R1--R3--R4 After I changed all the bandwidth of serial interface of R1, R2, R4 to 3000Kbit (default is 1544kbit), I cannot get two route to LAN B, only the best route appears (R1--R2--R4). It is normal. I key in the variance 128 command in R1 in order to get two route, but it failed. The parameter 128 is make sure that the R1 will take any alternate route to LAN B because the metric of R1--R3--R4 must be less than 128 * (metric of R1--R2--R4). Anyone have the idea? Thanks. Francis Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23623t=23623 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: CAT 2948G (L2) vs. CAT3548-XL [7:23563]
interesting dilemma. you might want to check out Cisco's on line product quick reference at: http://www.cisco.com/warp/customer/752/qrg/ requires a CCO customer level login or search through the guides on the freebie CCO. looks to me like the 2948 has a 24 gig backplane, and Cisco claims it is wire speed non blocking, which is not Cisco's usual approach to things. the 3548 has only a 10 gig backplane. IMHO the backplane issue can be misleading. It is real tough to fill it under anything but specialized extreme circumstances, at which point the 2948 can do 1024 of 802.1q vlans, while the 3548 can only do 250, but both ISL and dot1q. again, IMHO, it is real tough for most business organizations to come up with the need for more that a couple dozen VLANs. ISP's tend to use zillions, for obvious reasons. flip a coin? :- Chuck -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Thomas Sent: Friday, October 19, 2001 12:52 PM To: [EMAIL PROTECTED] Subject: CAT 2948G (L2) vs. CAT3548-XL [7:23563] Hi All, I saw an ads with Cisco CAT 2948G Layer 2 switch that has a price almost the same as the Cisco CAT 3548-EN-XL. Based on the discription, It seems that the 2948G running CATOS, while 3548s running IOS. Also, 2948G has a better speed of up to 24Gbps whereas the 3548s only up to 10.8Gbps. Assuming they both are at the same price, which should I choose? I am also considering the QoS on the switch to support VoIP. Does 2948G support the same features as 3548XL as well? We are using many of 3548s at the HQ and like to buy Cisco CAT for remote offices. Also, Is 2948G in End of Life or End of Support? Cisco just came out a new 2980G that is same as 2948G but has 80 10/100 ports. Thomas N. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23624t=23563 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: How to upgrade the IOS of C2521?! [7:23498]
Louie, Thank you in advance. I understand your procedure. That's sound logical to me. Really appreciate! But the upgrade has some problem with the following error message: Proceed? [confirm] System flash directory: File Length Name/status 1 8124000 c2500-js-l_112-19.bin [8124064 bytes used, 264544 available, 8388608 total] Address or name of remote host [10.1.4.2]? Source file name? c2500-i-l.121-11.bin Destination file name [c2500-i-l.121-11.bin]? Accessing file 'c2500-i-l.121-11.bin' on 10.1.4.2... Loading c2500-i-l.121-11.bin from 10.1.4.2 (via Serial0): ! [OK] Erase flash device before writing? [confirm] Flash contains files. Are you sure you want to erase? [confirm] Copy 'c2500-i-l.121-11.bin' from server as 'c2500-i-l.121-11.bin' into Flash WITH erase? [yes/no]yes %SYS-5-RELOAD: Reload requested %FLH: c2500-i-l.121-11.bin from 10.1.4.2 to flash ... System flash directory: File Length Name/status 1 8124000 c2500-js-l_112-19.bin [8124064 bytes used, 264544 available, 8388608 total] Accessing file 'c2500-i-l.121-11.bin' on 10.1.4.2... [failed] %FLH: retry #1 %FLH: c2500-i-l.121-11.bin from 10.1.4.2 to flash ... (retry) System flash directory: File Length Name/status 1 8124000 c2500-js-l_112-19.bin [8124064 bytes used, 264544 available, 8388608 total] Accessing file 'c2500-i-l.121-11.bin' on 10.1.4.2... [failed] %FLH: Idling for 30 secs before retry #2 %FLH: c2500-i-l.121-11.bin from 10.1.4.2 to flash ... (retry) System flash directory: File Length Name/status 1 8124000 c2500-js-l_112-19.bin [8124064 bytes used, 264544 available, 8388608 total] Accessing file 'c2500-i-l.121-11.bin' on 10.1.4.2... [failed] %FLH: Flash download failed I verified that the required IOS SW is actually in C2503's flash. But how come it is not accessible. I can ping the serial interface of the C2503. C2503sh flash System flash directory: File Length Name/status 1 7972500 /c2500-i-l.121-11.bin [7972564 bytes used, 416044 available, 8388608 total] 8192K bytes of processor board System flash (Read ONLY) EA Louie wrote: Hi all, As a beginner, i am setting up home lab. Can anyone give me the detail procedure of how to upgrade the IOS of C2521. I'm assuming you have the console connection to the routers. I'm also assuming you have either learned to clear the passwords, or that you have enable (priveleged EXEC) access to the routers because you know the passwords. So from priveleged EXEC mode (the prompt that looks like Router#, not Router) 1. use the s0 or s1 serial interface of the 2521 to connect to the 2503. (those are the high-speed serial interfaces) 2. set the clock rate to 400 (the clock rate will be set on the router with the DCE cable connected) - example configure terminal interface serial0 clock rate 400 no shutdown ^z (control-z. typing end also takes you out of configuration mode) 3. set an IP address on both serial interfaces to be in the same subnet, and enable the ethernet interface - example on the 2521 - config t interface serial 0 ip address 192.168.1.1 255.255.255.0 end on the 2503 - config t interface serial 0 ip address 192.168.1.2 255.255.255.0 no shut int e0 ip addr 192.168.2.1 255.255.255.0 no shut ^z 4. create a default route on the 2521 to the serial interface of the 2503 - example ip route 0.0.0.0 0.0.0.0 192.168.1.2 5. ping the 2503 ethernet interface from the 2521 to verify connectivity - example, if the ethernet were set to 192.168.2.1 ping 192.168.2.1 6. save the configuration on the 2521 wr mem (or copy run start) 7. depending on where the IOS image resides, you want to start up the tftp server on your PC, or set up your 2503 as a tftp server (if you want to use the image that resides on the 2503) - example on the 2503 - show flash (a filename will be displayed - perhaps something like c2500-d-l.120-9.bin) conf t tftp-server c2500-d-l.120-9.bin ^z 8. on the 2521, copy tftp flash at the prompt for the ip address, either use the ip address of the PC running the tftp software (it should be a 192.168.2.x address) or the serial interface of the 2503 if you're copying that image at the prompt for the source filename, use the filename that you used above - in this example, c2500-d-l.120-9.bin at the prompt for the destination filename, press enter for all the other prompts, press enter or y then watch the flash get erased on the 2521 and then watch the tftp transfer process with all of the exclamation points (!) When the image is finished tranferring, the 2521 will reload, because it runs its operating system from flash memory. Good luck, and have fun -e- I got no problem with my C2503 because it has a Ethernet port for me to connect the PC to it. Kenneth _ Do You Yahoo!? Get your free @yahoo.com address at
Re: Design Question - Spanning-tree Protocol. [7:23614]
Hi Folks, I have a design in which Cisco 3548 XL's are GBIC-stacked on various floors of a campus and are uplinked to a core Cat 6509 switch. The uplink from every floor stack is ether-channeled to the core via two parallel equal-cost paths. One uplink path starts forwarding and the other goes into blocking mode from each floor stack. Here is my confusion... If only one link of a 400 MBps full-duplex ether-channel fails from the forwarding path , will it invoke spanning-tree recalculation ??? Or will the 'now' sub-optimal path still remain in forwarding mode and the now more-bandwidth path remain in blocking mode ??? the 'suboptimal' path will continue until all the links fail. At that point, STP will detect the link failure and recalculate. Since spanning-tree recalculation causes a lot of ripples throughout the switched network, I would assume that the latter were true. However, I would like to hear views from people who would think that the former scenario is more probable. Thanks very much. Aziz _ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23626t=23614 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: default-routes for eigrp?? [7:23581]
Tried that...first on the border router thinking that it would inject a default route to the remote router..on the remote router shows as candiate route * But does not work..(This command works for RIP BTW) The key concept here is HAS TO BE IN THE ROUTING TABLE. Otherwise, the default-network command merely injects a static route into your configuration which is usually useless. Thus, if the default route were out of the 209.125.17.0 network, the statement ip default-network 209.125.17.0 would allow that route in the routing table to be flagged as a candidate default route, and would advertise that route to other eigrp routers. [snip] Also here is the output of the sh ip route command on the ISP router for the netw/ip that I am trying to ping on the remote router: 209.125.17.0/32 is subnetted, 1 subnets B 209.125.17.1 [20/2297856] via 192.168.1.9, 21:19:27 ISP#ping 209.125.17.1 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 209.125.17.1, timeout is 2 seconds: . Success rate is 0 percent (0/5) There are two reasons for a ping failing. The first one is obvious... no path to the destination network. What's the 2nd reason that pings fail? What am I missing on the border router? Trace dies there Thanks for your help. Kind regards. _ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23627t=23581 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: How to upgrade the IOS of C2521?! [7:23498]
I only read part of this e-mail but I noticed that you are having trouble accessing the file. Have you set up file sharing on the dir the flash is in? I remember that being a sticking point when I started flashing routers. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Kenneth Yeung Sent: Saturday, October 20, 2001 10:42 AM To: [EMAIL PROTECTED] Subject: Re: How to upgrade the IOS of C2521?! [7:23498] Louie, Thank you in advance. I understand your procedure. That's sound logical to me. Really appreciate! But the upgrade has some problem with the following error message: Proceed? [confirm] System flash directory: File Length Name/status 1 8124000 c2500-js-l_112-19.bin [8124064 bytes used, 264544 available, 8388608 total] Address or name of remote host [10.1.4.2]? Source file name? c2500-i-l.121-11.bin Destination file name [c2500-i-l.121-11.bin]? Accessing file 'c2500-i-l.121-11.bin' on 10.1.4.2... Loading c2500-i-l.121-11.bin from 10.1.4.2 (via Serial0): ! [OK] Erase flash device before writing? [confirm] Flash contains files. Are you sure you want to erase? [confirm] Copy 'c2500-i-l.121-11.bin' from server as 'c2500-i-l.121-11.bin' into Flash WITH erase? [yes/no]yes %SYS-5-RELOAD: Reload requested %FLH: c2500-i-l.121-11.bin from 10.1.4.2 to flash ... System flash directory: File Length Name/status 1 8124000 c2500-js-l_112-19.bin [8124064 bytes used, 264544 available, 8388608 total] Accessing file 'c2500-i-l.121-11.bin' on 10.1.4.2... [failed] %FLH: retry #1 %FLH: c2500-i-l.121-11.bin from 10.1.4.2 to flash ... (retry) System flash directory: File Length Name/status 1 8124000 c2500-js-l_112-19.bin [8124064 bytes used, 264544 available, 8388608 total] Accessing file 'c2500-i-l.121-11.bin' on 10.1.4.2... [failed] %FLH: Idling for 30 secs before retry #2 %FLH: c2500-i-l.121-11.bin from 10.1.4.2 to flash ... (retry) System flash directory: File Length Name/status 1 8124000 c2500-js-l_112-19.bin [8124064 bytes used, 264544 available, 8388608 total] Accessing file 'c2500-i-l.121-11.bin' on 10.1.4.2... [failed] %FLH: Flash download failed I verified that the required IOS SW is actually in C2503's flash. But how come it is not accessible. I can ping the serial interface of the C2503. C2503sh flash System flash directory: File Length Name/status 1 7972500 /c2500-i-l.121-11.bin [7972564 bytes used, 416044 available, 8388608 total] 8192K bytes of processor board System flash (Read ONLY) EA Louie wrote: Hi all, As a beginner, i am setting up home lab. Can anyone give me the detail procedure of how to upgrade the IOS of C2521. I'm assuming you have the console connection to the routers. I'm also assuming you have either learned to clear the passwords, or that you have enable (priveleged EXEC) access to the routers because you know the passwords. So from priveleged EXEC mode (the prompt that looks like Router#, not Router) 1. use the s0 or s1 serial interface of the 2521 to connect to the 2503. (those are the high-speed serial interfaces) 2. set the clock rate to 400 (the clock rate will be set on the router with the DCE cable connected) - example configure terminal interface serial0 clock rate 400 no shutdown ^z (control-z. typing end also takes you out of configuration mode) 3. set an IP address on both serial interfaces to be in the same subnet, and enable the ethernet interface - example on the 2521 - config t interface serial 0 ip address 192.168.1.1 255.255.255.0 end on the 2503 - config t interface serial 0 ip address 192.168.1.2 255.255.255.0 no shut int e0 ip addr 192.168.2.1 255.255.255.0 no shut ^z 4. create a default route on the 2521 to the serial interface of the 2503 - example ip route 0.0.0.0 0.0.0.0 192.168.1.2 5. ping the 2503 ethernet interface from the 2521 to verify connectivity - example, if the ethernet were set to 192.168.2.1 ping 192.168.2.1 6. save the configuration on the 2521 wr mem (or copy run start) 7. depending on where the IOS image resides, you want to start up the tftp server on your PC, or set up your 2503 as a tftp server (if you want to use the image that resides on the 2503) - example on the 2503 - show flash (a filename will be displayed - perhaps something like c2500-d-l.120-9.bin) conf t tftp-server c2500-d-l.120-9.bin ^z 8. on the 2521, copy tftp flash at the prompt for the ip address, either use the ip address of the PC running the tftp software (it should be a 192.168.2.x address) or the serial interface of the 2503 if you're copying that image at the prompt for the source filename, use the filename that you used above - in this example, c2500-d-l.120-9.bin at the prompt for the destination filename, press enter for all the other prompts, press enter or y then watch the flash get erased on the 2521 and then watch the tftp transfer process
Re: CAT 2948G (L2) vs. CAT3548-XL [7:23563]
Hi, I have bought them both and their is fine line between them. The 2948G is a CAT based os where is the 3548XL is an IOS based. This is how I use them: 1. For the closet: I used the 3548/3524xl and cascading them together 2. For small, medium servers I used the 2948G (DMZ ...) 3. For server farm I used 6509 Personnaly, I like the 2948G better. The only reason the I used 3548 because it is cascadable and can be managed as a cluster. But it turns out it has its own complexity when you need to replace a bad one in the chain. Another thing on the 3548G is that eventhough it supports more than 200 vlans; this is only in the case of transparent configuration. If you do client/server, it support upto 64 VLANs then It will switch to transparent if more VLAN is defined. The 35xx however, has a model that support inline power for IP phone if you ever have a need for it. I think the model is 35xx-pwr With the new 2980G, it looks more and more attractive for the CAT based system. I 'm seriouly looking at the 2980G currently. Note that the 2948 and 2980G use the chipset of the 4000 series switches. Hope this help. Cheers, TD Thomas wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Hi All, I saw an ads with Cisco CAT 2948G Layer 2 switch that has a price almost the same as the Cisco CAT 3548-EN-XL. Based on the discription, It seems that the 2948G running CATOS, while 3548s running IOS. Also, 2948G has a better speed of up to 24Gbps whereas the 3548s only up to 10.8Gbps. Assuming they both are at the same price, which should I choose? I am also considering the QoS on the switch to support VoIP. Does 2948G support the same features as 3548XL as well? We are using many of 3548s at the HQ and like to buy Cisco CAT for remote offices. Also, Is 2948G in End of Life or End of Support? Cisco just came out a new 2980G that is same as 2948G but has 80 10/100 ports. Thomas N. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23629t=23563 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: IPSec and IKE [7:23599]
In a nutshell, IPSEC is encryption methodology open standard. IPSEC SAs can be configured using IKE or manual keying. IKE saves time and manual work in hub and spoke configurations. It is an algorithm that uses policy to determine matching parameters with the other side. In absence of IKE, you would have to configure each parameter manually on all participating routers and clients. IKE is called phase I negotiation, which ensures that peer is who it says it is. -Keyur Shah- CCIE# 4799 (Security; Routing and Switching) CSS1,CCNA,CCDA,SCSA,SCNA,MCT,MCSE,MCP+I,MCP,CNI,MCNE,CNE,CNA Hello Computers Say Hello to Your Future! http://www.hellocomputers.com Toll-Free: 1.877.794.3556 International: 1.510.795.6815 Eurpoe: +(44)20 7900 3011 Fax: 1.510.291.2250 -Original Message- From: Hunt Lee [mailto:[EMAIL PROTECTED]] Sent: Friday, October 19, 2001 6:16 PM To: [EMAIL PROTECTED] Subject: IPSec and IKE [7:23599] Can anyone please explain to me what is the difference between IPSec and IKE? I understand that IP Sec is just IP Security, which provides IP network layer encryption and authentication to end-to-end security on an infrastructure, but what's IKE? I read the Cisco MCNS book from Chapter 15 to 17 many times, yet I'm still very confused. Any help will be greatly appreciated. Best Regards, Hunt Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23630t=23599 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: ADSL/BVI problems solved! [7:23631]
I finally got it through my thick head that it was a *bridged* connection, and set up IRB. Sure enough, I was then able to ping the next hop address with packets sourced from the public IP I was given. However, I seem to be unable to hit anything outside that particular subnet, and I'm not sure why. If I try and ping www.yahoo.com, for instance, I get no response. This is true if I ping from the internal network (and thus NAT) or if I ping sourced from the BVI interface (avoiding NAT). After much experimentation and much frustration, I finally solved the problem with my BVI interface. It turns out that removing the default route pointing at the BVI1 interface and replacing it with a default route pointing at the next-hop IP address fixed the problem. I'm not totally clear on why this made a difference, but it did. As soon as that change was made, I could reach the IP assigned to the BVI interface from hosts out in the world, and general connectivity was enabled. Wild. If someone can explain to me why a next-hop static route vs an interface static route made a difference, I'd appreciate it. Thanks Ben Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23631t=23631 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Network and Broadcast address [7:23632]
It would be great if someone can give me a hand on this: I know how to calculate the number of subents and number of hosts per subent, but I'm very confused about the Network address and the Broadcast address: Say I have a network: 100.10.0.0 255.255.255.192: 1) To work out the subnet: 100.10.0.0 is a Class A, so = /8 255.255.255.192 = /26 Therefore, /26 - /8 = /14, The number of subnets = 2^14-2= 16382 2) To work out the number of host: /32 - /26 = /6 The number of hosts = 2^6-2 = 62 hosts per subnets Thanks so much for your help in advance. Best Regards, Hunt Lee Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23632t=23632 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Network and Broadcast address [7:23632]
so = /18 = 2^18 - 2 Number of subnet is 262142. Hunt Lee wrote: It would be great if someone can give me a hand on this: I know how to calculate the number of subents and number of hosts per subent, but I'm very confused about the Network address and the Broadcast address: Say I have a network: 100.10.0.0 255.255.255.192: 1) To work out the subnet: 100.10.0.0 is a Class A, so = /8 255.255.255.192 = /26 Therefore, /26 - /8 = /14, The number of subnets = 2^14-2= 16382 2) To work out the number of host: /32 - /26 = /6 The number of hosts = 2^6-2 = 62 hosts per subnets Thanks so much for your help in advance. Best Regards, Hunt Lee Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23633t=23632 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Load Balancing Via BGP [7:23478]
it means a down-link , it receives data but can transmit data thanks for your reply Is this to be can or can't ? Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23635t=23478 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: ADSL/BVI problems solved! [7:23631]
After much experimentation and much frustration, I finally solved the problem with my BVI interface. It turns out that removing the default route pointing at the BVI1 interface and replacing it with a default route pointing at the next-hop IP address fixed the problem. How does your router know where to route traffic ? The default route was pointing to x.x.x.26 (when the traffic got there, it knew not where to go). At the next hop, whatever device was there, used its routing table to forward traffic further. I'm not totally clear on why this made a difference, but it did. As soon as that change was made, I could reach the IP assigned to the BVI interface from hosts out in the world, and general connectivity was enabled. Wild. Routing, its a beautiful thing :) If someone can explain to me why a next-hop static route vs an interface static route made a difference, I'd appreciate it. .26 did not have a routing table (it was you). Had .26 been another router on the network, it would have worked fine. BTW (what was the next hop , .25 ?) Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23634t=23631 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Load Balancing Via BGP [7:23478]
I was under the impression that BGP did not work on unidirectional links. Can someone correct me if I'm wrong ? hi , I am currently running on 2 fibre links to two different providers . The utilisation of these two links are getting very high and they are getting congested . I am thinking of purchasing a satellite Receive-only link from another provider . My question is , how am I going to do load-balancing using BGP on this Receive-only link ? Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23636t=23478 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Design Question - Spanning-tree Protocol. [7:23614]
Hmm, I think your STP/EtherChannel might be misconfigured. EtherChannel should be treated as a single logical link. With an STP running on top of it your both links should be forwarding. So in case one of the physical links fails, there is no need to re-calculate anything with STP. Are you sure they are configured for etherchannel and not just trunking ? Urooj's Hi-speed Internet wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Hi Folks, I have a design in which Cisco 3548 XL's are GBIC-stacked on various floors of a campus and are uplinked to a core Cat 6509 switch. The uplink from every floor stack is ether-channeled to the core via two parallel equal-cost paths. One uplink path starts forwarding and the other goes into blocking mode from each floor stack. Here is my confusion... If only one link of a 400 MBps full-duplex ether-channel fails from the forwarding path , will it invoke spanning-tree recalculation ??? Or will the 'now' sub-optimal path still remain in forwarding mode and the now more-bandwidth path remain in blocking mode ??? Since spanning-tree recalculation causes a lot of ripples throughout the switched network, I would assume that the latter were true. However, I would like to hear views from people who would think that the former scenario is more probable. Thanks very much. Aziz Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23637t=23614 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: which books in better for support 2.0?? [7:18577]
I have obtained my CCNA CCNP with all of the Cisco press books. Yes I did use the all of the Certification guides for all my studies. Yes they are very good, but a bit cryptic. It did take me several reads before understanding it. But once I understood it, stuck in my head. Now whenever I needed clarity I did turn to the course books that parallels the cert guides. I suggest read and study out of the cert guides and reference the courseware books. I only say that because it worked for me. But you must find your own books, and formula for your studies that works best for you. good luck. Sharon Kantan wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Dear friends, I am going for the support 2.0 exam. May I know which book is better? is that 1)Cisco Internetwork Troubleshooting ISBN: 1578700922 or 2)Cisco CCNP Support Exam Certification Guide ISBN: 0735709955 Besides, may I know which book is better for routing 2.0? is that Building scalable cisco networks published by CISCO or the one published by Sybex.?? Please advise _ 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=23638t=18577 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Reading the show int token ring command [7:23640]
I just wanted to double-check myself. The line #9 from the following show interface token-ring 0 output says... 1.) TokenRing 0 is up, line protocol is up 2.) Hardware is Dual Token Ring, address is .3080.5fca (bia .3080.5fca) 3.) Internet address is 1.0.0.7, subnet mask is 255.0.0.0 4.) MTU 8136 bytes, BW 4000 Kbit, DLY 630 usec, rely 255/255, load 1/255 5.) Encapsulation SNAP, loopback not set, keepalive set (10 sec) 6.) ARP type: SNAP, ARP Timeout 4:00:00 7.) Ring speed: 16 Mbps 8.) Single ring node, Source Route Transparent Bridge capable 9.) Source bridging enable, srn 1 bn 2 trn 1000 (ring group) 10.) Proxy explorers disable, spanning explorer enabled, NetBIOS cache disable 11.) Group Address: 0x, Functional Address: 0x011A local ring number - 1 bridge number - 2 ring group - 1000 Right? --- Dennis Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23640t=23640 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: IPExpert Lab Study Guide Feedback [7:23425]
The solutionexpert site referred in Paul's email is called SolutionLabs. The website is located at www.solutionlabs.com . --- - --- Paul Jin wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... I will post what I asked chuck about it earlier.. if you have not seen it yet. - Author: Chuck Larrieu (Mailing List Post) Date: 10-18-01 10:53 there are several good sources for Lab prep material now. NLI / Bootcamp, Fatkid, and the one sold through Cert Zone. NLI is comprehensive. Their older Labs contain a lot of obsolete material, but this does not diminish their value. NLI would like you to rent rack time from them, but many of their labs can be done in a typical home lab. Fat Kid Labs seem to be more topic specific, rather than comprehensive in nature. But they are worth looking at. Fat Kid has very reasonable rental rates, but most of their stuff can be done at home. IP Xpert builds their labs around a large pod, and their model is that they rent you rack time at reasonable rates to do their labs. One can jigger the setup, and get a lot of the stuff done on a home lab. It comes down to where you want to spend your dollars. In terms of cost, Fat Kid is the least expensive and NLI is the most expensive. But the cost of the study material is about that of a 2501 on an auction site. Your cost for setting up a home lab will be far and away more expensive than any materials you buy. These days, the study materials available are excellent. the major differences between NLI and IP Xpert are in the presentation ( several sheets stapled together versus a nicely bound book ) the presence or absence of obsolete topics ( NLI has been around a lot longer, and has legacy material which can be skipped ) some cosmetic presentation things like color diagrams nicely done on Visio versus hand sketched. Seems to me I'm forgetting somebody. Solutions Experts or something? I'll have to dig around. Oh yeah, and Vlab. HTH Chuck -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Paul Jin Sent: Wednesday, October 17, 2001 7:42 PM To: [EMAIL PROTECTED] Subject: RE: Off Topic - CCIE Lab Prep recommendation [7:23091] Chuck, So in your opinion, you do believe that this is one of the better labs and complex enough that it will help you deal with the real lab??? Paul Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23641t=23425 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: How to upgrade the IOS of C2521?! [7:23498]
Hi all, Some findings. The problem is on the C2521. I can successfully upgrade another C2521 with the same method. I tried to wr erase and reload before I perform the upgrade on these routers. So the issue is: What is the problem with this C2521? Any suggestion? Routersh ver Cisco Internetwork Operating System Software IOS (tm) 2500 Software (C2500-JS-L), Version 11.2(19), RELEASE SOFTWARE (fc1) Copyright (c) 1986-1999 by cisco Systems, Inc. Compiled Wed 07-Jul-99 16:49 by jaturner Image text-base: 0x030402C4, data-base: 0x1000 ROM: System Bootstrap, Version 5.2(8a), RELEASE SOFTWARE BOOTFLASH: 3000 Bootstrap Software (IGS-RXBOOT), Version 10.2(8a), RELEASE SOFTW ARE (fc1) Router uptime is 4 minutes System restarted by power-on System image file is flash:c2500-js-l_112-19.bin, booted via flash cisco 2521 (68030) processor (revision K) with 14336K/2048K bytes of memory. Processor board ID 03856704, with hardware revision 0002 Bridging software. SuperLAT software copyright 1990 by Meridian Technology Corp). X.25 software, Version 2.0, NET2, BFE and GOSIP compliant. TN3270 Emulation software. Basic Rate ISDN software, Version 1.0. 1 Token Ring/IEEE 802.5 interface(s) 2 Serial network interface(s) 2 Low-speed serial(sync/async) network interface(s) 1 ISDN Basic Rate interface(s) 32K bytes of non-volatile configuration memory. 8192K bytes of processor board System flash (Read ONLY) Configuration register is 0x2142 Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23642t=23498 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Network and Broadcast address [7:23632]
And if you are allowing IP subnet-zero, then you have subnets=(2^18)-1 or 262143 subnets. As far as network and broadcast addresses are concerned: For your example of 10.100.0.0/26, the network address is 10.100.0.0, and the broadcast address is 10.100.0.63 Don't even get me started on the new feature available in 12.2(T) where you can use /31 networks. Hunt Lee wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... so = /18 = 2^18 - 2 Number of subnet is 262142. Hunt Lee wrote: It would be great if someone can give me a hand on this: I know how to calculate the number of subents and number of hosts per subent, but I'm very confused about the Network address and the Broadcast address: Say I have a network: 100.10.0.0 255.255.255.192: 1) To work out the subnet: 100.10.0.0 is a Class A, so = /8 255.255.255.192 = /26 Therefore, /26 - /8 = /14, The number of subnets = 2^14-2= 16382 2) To work out the number of host: /32 - /26 = /6 The number of hosts = 2^6-2 = 62 hosts per subnets Thanks so much for your help in advance. Best Regards, Hunt Lee Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23643t=23632 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: LDAP Question [7:23519]
Just make sure you're not blocking out TCP port 389, and you're cool. Kent Hundley wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... No. Unless your have things like access-lists, policy-based routing, etc. configured the router will not know or care about anything above layer 3. i.e. It will only care about IP addresses and IP layer information. (correct checksum, correct MTU, etc) HTH, Kent -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Wright, Jeremy Sent: Friday, October 19, 2001 7:26 AM To: [EMAIL PROTECTED] Subject: LDAP Question [7:23519] Are there any special configurations on a router to allow LDAP out over my WAN? Thanks for any input... Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23644t=23519 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
OT: Cisco Power Adapter Recall [7:23645]
See below: http://www.safetyalerts.com/recall/p/014/01270.htm The power adapters were shipped with the following ADSL routers: Cisco 827 Cisco 827-4V Cisco 826 Cisco SOHO77 Cisco SOHO77-50 Cisco 827-EUR FYI -Brad Ellis CCIE#5796 Network Learning Inc [EMAIL PROTECTED] used Cisco: www.optsys.net Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23645t=23645 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: How to upgrade the IOS of C2521?! [7:23498]
Well the image on the 2503 is good. Both routers use the same Flash. Swap the flash SIMMs and see what happens. Also check on CCO for bootroms for the 2500 series. I seem to remember that the latest roms work in all 2500s. Might be worth updating them. Cisco just charges for shipping. Check the archives for exactly what is the telephone number to call. -Original Message- From: Kenneth Yeung [mailto:[EMAIL PROTECTED]] Sent: Saturday, October 20, 2001 9:29 PM To: [EMAIL PROTECTED] Subject: RE: How to upgrade the IOS of C2521?! [7:23498] Hi all, Some findings. The problem is on the C2521. I can successfully upgrade another C2521 with the same method. I tried to wr erase and reload before I perform the upgrade on these routers. So the issue is: What is the problem with this C2521? Any suggestion? Routersh ver Cisco Internetwork Operating System Software IOS (tm) 2500 Software (C2500-JS-L), Version 11.2(19), RELEASE SOFTWARE (fc1) Copyright (c) 1986-1999 by cisco Systems, Inc. Compiled Wed 07-Jul-99 16:49 by jaturner Image text-base: 0x030402C4, data-base: 0x1000 ROM: System Bootstrap, Version 5.2(8a), RELEASE SOFTWARE BOOTFLASH: 3000 Bootstrap Software (IGS-RXBOOT), Version 10.2(8a), RELEASE SOFTW ARE (fc1) Router uptime is 4 minutes System restarted by power-on System image file is flash:c2500-js-l_112-19.bin, booted via flash cisco 2521 (68030) processor (revision K) with 14336K/2048K bytes of memory. Processor board ID 03856704, with hardware revision 0002 Bridging software. SuperLAT software copyright 1990 by Meridian Technology Corp). X.25 software, Version 2.0, NET2, BFE and GOSIP compliant. TN3270 Emulation software. Basic Rate ISDN software, Version 1.0. 1 Token Ring/IEEE 802.5 interface(s) 2 Serial network interface(s) 2 Low-speed serial(sync/async) network interface(s) 1 ISDN Basic Rate interface(s) 32K bytes of non-volatile configuration memory. 8192K bytes of processor board System flash (Read ONLY) Configuration register is 0x2142 Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23646t=23498 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Network and Broadcast address [7:23632]
And if you are allowing IP subnet-zero, then you have subnets=(2^18)-1 or 262143 subnets. Does ip subnet zero also not allow an all ones subnet , making the total 262144 (can't remember in which IOS this started becoming possible) Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23647t=23632 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Doyle Chap:14 Config Q.1 [7:23648]
Hi everybody, Is any can help me to understand how we can use this acl 172.16.1.0 0.0.0.127 to represent range of addresses from 172.16.1.0/28 to 172.16.1.128/28??and similarly 172.16.1.128 0.0.0.127 to represent.. 172.16.1.128/28 to 172.16.1.240/28 ??? Thanks for help. _ 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=23648t=23648 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: CAT 2948G (L2) vs. CAT3548-XL [7:23563]
Yes, 3524-PWR support in-line power for IP phone; but it is the only model with in-line power. For 3500XL and 2900XL, they run on IOS, which is similar to that on routers. They also have QoS features for VoIP, etc... I wonder if I can implement these QoS features on CATOS of 2948G for VoIP? 2948G doesn't support cluster; but with the 2 Giga uplink ports, should I be able to stack them together just like 3548s? Does 2948G become End of Life or End of Support soon? Thanks! td wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Hi, I have bought them both and their is fine line between them. The 2948G is a CAT based os where is the 3548XL is an IOS based. This is how I use them: 1. For the closet: I used the 3548/3524xl and cascading them together 2. For small, medium servers I used the 2948G (DMZ ...) 3. For server farm I used 6509 Personnaly, I like the 2948G better. The only reason the I used 3548 because it is cascadable and can be managed as a cluster. But it turns out it has its own complexity when you need to replace a bad one in the chain. Another thing on the 3548G is that eventhough it supports more than 200 vlans; this is only in the case of transparent configuration. If you do client/server, it support upto 64 VLANs then It will switch to transparent if more VLAN is defined. The 35xx however, has a model that support inline power for IP phone if you ever have a need for it. I think the model is 35xx-pwr With the new 2980G, it looks more and more attractive for the CAT based system. I 'm seriouly looking at the 2980G currently. Note that the 2948 and 2980G use the chipset of the 4000 series switches. Hope this help. Cheers, TD Thomas wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Hi All, I saw an ads with Cisco CAT 2948G Layer 2 switch that has a price almost the same as the Cisco CAT 3548-EN-XL. Based on the discription, It seems that the 2948G running CATOS, while 3548s running IOS. Also, 2948G has a better speed of up to 24Gbps whereas the 3548s only up to 10.8Gbps. Assuming they both are at the same price, which should I choose? I am also considering the QoS on the switch to support VoIP. Does 2948G support the same features as 3548XL as well? We are using many of 3548s at the HQ and like to buy Cisco CAT for remote offices. Also, Is 2948G in End of Life or End of Support? Cisco just came out a new 2980G that is same as 2948G but has 80 10/100 ports. Thomas N. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23649t=23563 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Load Balancing Via BGP [7:23478]
you are right but I have a terrestrial return path for the return traffic so BGP TCP connection can be established regards, suaveguru --- Wojtek Zlobicki wrote: I was under the impression that BGP did not work on unidirectional links. Can someone correct me if I'm wrong ? hi , I am currently running on 2 fibre links to two different providers . The utilisation of these two links are getting very high and they are getting congested . I am thinking of purchasing a satellite Receive-only link from another provider . My question is , how am I going to do load-balancing using BGP on this Receive-only link ? [EMAIL PROTECTED] __ Do You Yahoo!? Make a great connection at Yahoo! Personals. http://personals.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23650t=23478 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: EIGRP load balancing - variance command [7:23623]
In this scenario, I don't know why you use 128 for variance value. In short, you choose a value of variance such that this value multiplies by the best path should be GREATER than the alternate path you like to load balancing. For this scenario, the bandwidth on R1-R2-R4 path is 3000K, bandwidth on R1-R3-R4 path is 1544K. Using a variance of 2 should load balance between the 2 paths. 1544k x 23000k Thomas N. kwock99 wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... I have tried some basic testing on the EIGRP load balancing. For simplicity, I only set up 4 router in order to get equal cost load balancing. LANA**R1 --R2 --R4 LANB || --R3 ***: Ethernet : Wan If I use the default setting for the bandwidth and delay, I can get two route from LAN A to LANB. R1--R2--R4 R1--R3--R4 After I changed all the bandwidth of serial interface of R1, R2, R4 to 3000Kbit (default is 1544kbit), I cannot get two route to LAN B, only the best route appears (R1--R2--R4). It is normal. I key in the variance 128 command in R1 in order to get two route, but it failed. The parameter 128 is make sure that the R1 will take any alternate route to LAN B because the metric of R1--R3--R4 must be less than 128 * (metric of R1--R2--R4). Anyone have the idea? Thanks. Francis Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23651t=23623 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Load Balancing Via BGP [7:23478]
sorry it should be can't --- Wojtek Zlobicki wrote: it means a down-link , it receives data but can transmit data thanks for your reply Is this to be can or can't ? [EMAIL PROTECTED] __ Do You Yahoo!? Make a great connection at Yahoo! Personals. http://personals.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23652t=23478 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Network and Broadcast address [7:23632]
Wojtek Zlobicki wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... And if you are allowing IP subnet-zero, then you have subnets=(2^18)-1 or 262143 subnets. Does ip subnet zero also not allow an all ones subnet , making the total 262144 (can't remember in which IOS this started becoming possible) No, IP subnet-zero does not allow this capability. On a Cisco router, you are always allowed to use the all-ones subnet. IP subnet-zero has nothing at all to do with the all-ones subnet. You can prove this to yourself by firing up a router and creating a loopback address that has an all-ones subnet address, while alternatively turning on and turning off IP subnet-zero, and you will find that it makes absolutely no difference whether it's on or off. The big problem with using the all-ones subnet is that there is the opportunity for great confusion as to whether a packet sent to the broadcast address is meant for just the subnetted network or for the entire classful network. This is why it is generally held that the all-ones subnet should not be used, and this is why basic networking texts do not count the all-ones subnet as a valid subnet. But if you really find youself in a jam because you're running out of addresses, and you use great caution, you could in theory fire up the all-ones subnet. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23653t=23632 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: How to upgrade the IOS of C2521?! [7:23498]
what kind of error message are you getting? I'm willing to venture that you're trying to load an image that is larger than 8192K (8M) bytes and that's causing the download error. Paste the error message into a reply and let us know. - Original Message - From: Kenneth Yeung To: Sent: Saturday, October 20, 2001 7:28 PM Subject: RE: How to upgrade the IOS of C2521?! [7:23498] Hi all, Some findings. The problem is on the C2521. I can successfully upgrade another C2521 with the same method. I tried to wr erase and reload before I perform the upgrade on these routers. So the issue is: What is the problem with this C2521? Any suggestion? Routersh ver Cisco Internetwork Operating System Software IOS (tm) 2500 Software (C2500-JS-L), Version 11.2(19), RELEASE SOFTWARE (fc1) Copyright (c) 1986-1999 by cisco Systems, Inc. Compiled Wed 07-Jul-99 16:49 by jaturner Image text-base: 0x030402C4, data-base: 0x1000 ROM: System Bootstrap, Version 5.2(8a), RELEASE SOFTWARE BOOTFLASH: 3000 Bootstrap Software (IGS-RXBOOT), Version 10.2(8a), RELEASE SOFTW ARE (fc1) Router uptime is 4 minutes System restarted by power-on System image file is flash:c2500-js-l_112-19.bin, booted via flash cisco 2521 (68030) processor (revision K) with 14336K/2048K bytes of memory. Processor board ID 03856704, with hardware revision 0002 Bridging software. SuperLAT software copyright 1990 by Meridian Technology Corp). X.25 software, Version 2.0, NET2, BFE and GOSIP compliant. TN3270 Emulation software. Basic Rate ISDN software, Version 1.0. 1 Token Ring/IEEE 802.5 interface(s) 2 Serial network interface(s) 2 Low-speed serial(sync/async) network interface(s) 1 ISDN Basic Rate interface(s) 32K bytes of non-volatile configuration memory. 8192K bytes of processor board System flash (Read ONLY) Configuration register is 0x2142 _ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23654t=23498 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
ospf point-to-multipoint [7:23655]
Hello, On Jeff Doyle's TCP/IP volume I, P417 it says point-to-multipoint is multicast; P433 it says it's unicast. Which one is correct? Thanks in advance. Jim __ Do You Yahoo!? Make a great connection at Yahoo! Personals. http://personals.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=23655t=23655 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
