Other Network Architecture Subjects

1.When ospf sham link will be up? What conditions are required excluding that /32 endpoint address is known via bgp? I found cisco sham link up only needs /32 endpoint address is known via BGP,however i feel that if sham link is up another conditions...

My network consist of Two backcone switches Cat-6513 ( Sup2, SFM, and MSFC ), 40 Edge switches Cat-3550 ( inline power )each edge switch connected to both backbone ( one Gigabit up-link to each backbone )I would like to install Two MS-Exchange Serve...

I met a strange problem when i troubleshoot the crash of a 7513 router. The router reboot automatically with unknown reason, the orignal master rsp in slot6 turned to slave state. When i checked the show tech, i can find sever pieces of crashinfo un...

Need Help troubleshooting. I would like someone to look a my config for frame relay backup and tell me if I miss something. Yesterday I went to my remote site and shutdown the interface for frame relay to see if the backup scheme would work. I'm usin...

I've got two of the WS-X6K-SUP2-2GE cards in my 6513 switch in my datacenter. They both have one boot-image and one IOS image in the MSFC's flash. Yet both the configs have the "boot system flash bootflash:<IOS filename> in them. Is this needed? ...

Hello.Maybe, Can I change the password of several routers at a time? - using some software or snmp

Hey all,I am using CiscoWorks LMS and RWAN 5th edition with RADIUS authentication. We provide consulting for another network infrastructure aside from ours, and I would like to also begin monitoring and managing this other company's network with our...

Guys,I have a LAN of mixed switches, Cisco, 3500, 2900x, Surcom, Centercom, and IBM. The problem with this LAN is that there is NO single monitoring software for it. According to them, we are encountering slow response from the network, (I'm a new st...

Hey all,I have a problem with managing a network of stacked 3550 switches. This network needs to be separated from the rest of the Campus, for application requirements. So I have created a separate backbone across closets with 3550 switches connect...

I want to run two instances of OSPF on a router and advertise my loopback address (/32) into both instances. I cant get it to work. Is it possible to make work?I am using my loopback as the source of a un-numbered Async interface for my OSPF process ...

Hello All & Greetings.I have a Cisco Router 2509 for Lab work. When I booted it, I get this message:error: system flash bank 1 chip 3 unknown, chip id 0xD105 (reverses - ox8BA0)flash initialization failedCan someone please explain the above error mes...

I've a c3640 Internet router recently upgraded to IOS 12.0.26 showing the following output in connection with the SHOW ARP commend despite that I did " clear ARP " just a minute ago:Internet_II#sh arpProtocol Address Age (min) Hardware Add...

Has anybody had any success monitoring non-cisco devices with DFM? All I need is up/down status. I've been able to add an SNMP agent to the noncisco devices and pull out basic information about the device, but I'm unable to access the device. In theo...

I've been experimenting problems with traffic Transport protocols(TCP,UDP) in the switch, only TCP, it's like a blocking problem. I solve it making a reload of the machine. What it's happening ?? How can i solve this problem??