Switching

I have an issue with HSRP routers occasionally becoming active-active in our branch networks.  The site has two 1921 routers with HWIC-4ESW each and connect to Catalyst 2960 Access switches.  Router1 is normally the active router and Router2  the sta...

I am trying to install a NM-16ESW ethernet module in my 3640. I'm wondering what would be the base level IOS to use to get the thing working. Also, what would be the minimum memory requirements for this? The present setup is as follows:Cisco Internet...

Hi,we have N7k --> N5k --> UCS --> VMsN7k is doing Layer 3.My issue is that when a VM from vlan 100 needs to talk to a VM next to it but in vlan 200 needs to go to the N7k.There is a way the VMs talk to each other when they are in different VLANs?- C...

I have a server in location A and other server in location B. There is HSRP setup from vlan 11 in location A. When I try to ping a server in location B without any source its working fine, but if i ping the same source from active switch of location ...

Hi, Router- Ciso 3925. ASA-5505.This is new. I changed NAT on our router from 'classic NAT' to NAT NVI. After making the change I accessed the internet and pinged servers from and to other branch offices internally (Comcast ENS network) and all seeme...

How to create site to site VPN between two routers in CLI?

Having an issue with routing from the PC at .242 to the CUE server at 10.1.10.1. The CUE server is built into the UC540 phone system. It is an internal piece of software that is used for voicemail and management. The UC540 is not only a call router, ...

HI,  I powered on my 3550 switch and all the switchports lights yellow the sys light is yellow also the rps light is yellow the other lights are green but the switch wont work or show any messages on the console I opened it and everything seem fine i...

When I transfer IOS from  the desktop to a 3750 X switcch via the console at 115200 speed, the number of retries keeps on increasing and the md5 value dos not match the real md5 vlaue. Please tell me how can I mitigate this error and the root cause f...

Hi all,I need to create a vPC between two Nexus 3048 and HP Procurve 3400. I've create the link aggregation HP-side and Nexus side like HP Procurve and Cisco switches Interoperability documentation, but seems that only one link work at all. The secon...

Hello, I have configured two switches with loopback interfaces (both on same subnet). The two switches are connected with a trunk. Why can I not ping between these two switches (loopback addresses). Are loopback interfaces on switches not supposed to...

Hello, I have configured two switches with loopback interfaces (both on same subnet). The two switches are connected with a trunk. Why can I not ping between these two switches (loopback addresses). Are loopback interfaces on switches not supposed to...

Hi AllAre you aware of any compatibility issues with ASR 9001 and GLC-SX-MMD ? The compatibility matrix does show that this SFP is supported..The issue is - we have a multimode fiber which is getting terminated on the ASR 9001. The physical link come...