Switching

Hello to all, we have a simple HSRP topology where one 6509 is the root for even numbered vlans and the other is the root for odd numbered vlans. Everything worked fine for years, but suddenly only one of the two 6509 (root for even vlans) begun beco...

Hi, I have cisco WS-C2960G-24TC-L with IOS c2960-lanbasek9-mz.150-2.SE6.bin I am facing Ping not responding issue once I applied  NO IP HOST-ROUTING command. Switch stopped pinging after applying this command. Please help. 

We have (4) Catalyst 3850 switches, configured as a stack.  Seems that one or both stack ports on switch 3 and 4 are down. How do I troubleshoot this?  I don't see any commands to re-establish the stackports.  All the commands I see only report on st...

Hi,There is something about DHCP that i can't understand.I was told that the PC asks for an ip address by sending a broadcast(and then the router continues the proccess. From to this point i understand it).My problem is with the beginning - how can t...

Hello, We have got some problem in our router (a 1841, IOS Version 12.4(15)T12), I activated the command "debug ip packet" (to observ nat translation) then the cpu became full (100%) and I wasn't able to reach the management IP of it. Afte...

Hi All, So I began rolling out QOS to a test site today, and when I configured the switch with the service-policy and applied it, I lost connectivity to the switch and subsequently all site services went down.  Had to call site and have switch power ...

Hi all, I have an integration between Cisco  WS-C4500X-32SFP+  and Cisco 3560x that would require trunking etc. I would need an assistance on setting up Cisco WS-C4500X-32SFP+ from the scratch , especially in the areas of : integrate 10g with 1g int...

i need some help to resolve STP related query.  we have Two Switch in which everything is same like MAC address ( Varitual MAC ), Route ID, interface cost, ( SW 1 interface f0/1 connected to Sw 2 int f0/2 & Sw 1 inter f0/2 connected to Sw2 int f0/1),...

Hi everybody, I have several 3560C switches  and I need to configure VRF on them. Now the switches are on IOS version 12 where it seems there are lite VRF, but I need full VRF capacity.  Can anybody help me to find out if I can use full VRF and how...

I have a Nexus 9396 and several 2248TP-E Fabric extenders and for some reason, only two are being recognized.  The configs are identical, but when I power up each FEX, the FEX shows no link lights on the fiber uplinks and the status light blinks gree...

Hi everybody, I have several 3560C switches  and I need to configure VRF on them. Now the switches are on IOS version 12 where it seems there are lite VRF, but I need full VRF capacity.  Can anybody help me to find out if I can use full VRF and how...