Switching

I would like to solicit other's opinions on racking Cisco 2960 switches & 2811 routers. What kind of dead space is needed/required/optimal between devices mounted in a rack? Are fans required to circulate air, or are the little fans in each device ...

HiSwitch stuck in ROMMON Prompt and giving following error.Could not find a valid file in BOOT environment variable. BOOT variable can be set from IOS. To find currently set Rom Monitor variables, please type 'set' command.Switch running with IOS ca...

Hi, we notice that for some reason we ignore ,there is a difference between the arp table and the adjacency table in our catalyst C3750..Alternatively , the adjacency table for a host is empty but not the arp table, so the host is unreachable for a...

what is AAA? How to configure?

Hi allIf I have 2 routers on my lan running hsrp. then each router has a wan link to the same destination. is there any way of load balancing the traffic on the wan? my guess is the only way would be to use GLBP? also how would the routes look to one...

All,I have to upgrade our IOS on a 3750 stack. Do I upgrade the IOS on the master stack, reload the stack, and then the others will copy the IOS automatically from the master?Thanks,John

is it possible to stack 4 3750 with between the switches stackcables of 3m, what is here the rule?

There is the Catalyst 6509 with two SUP2.I was migrating from CatOS to IOS following http://www.cisco.com/en/US/products/hw/switches/ps708/products_tech_note09186a008015bfa6.shtml#conv_msfc_2After Cat6509 loaded with IOS and I did:#show moduleI got f...

I am having a problem that does not make sense to me. I have a switch configured with a single (VLAN4) to which I tried to apply an ACL that will impact traffic coming from worstations in VLAN4.Once i apply the acl below, I can longer telnet from a h...

Every 30seconds, a router receives from one of its neighbors RIP updates for a specific route. Suddenly that route gets down and then the router received immediately triggered update from that neighbor for that route, now with metric=16. The route is...

Hi,I have seen high in-discard shown on the switch. The port is a trunk port and it is in blocked state. Any idea why it has such high discard?TP4L2-BS4> (enable) show mac 3/24Port Rcv-Unicast Rcv-Multicast Rcv-Broadcast-------- -...

Dear Friends,A 6500 switch with Sup 720 (IOS Ver: 12.2(33) SXH3 occassionally reports high CPU usage. However, the average CPU usage remains low.Do you suggest any diagnostics that can be run for this. Enclosed are the show proc cpu and show proc cpu...

All,I know that Cisco provides the following:ED - early deploymentGD - general deploymentLD - Limited deploymentCan anyone tell me what the stages are?Is ED released first, then turned into LD and finally GD?The reason that I ask is that I need to up...

Hi, I am trying to session into any module (for e.g. FWSM) via console and getting the below. This was working before. telnet on the management IP is working though. Please assist.CAT6500>se sl 1 pr 1The default escape character is Ctrl-^, then x.You...