Hi Recently I upgraded several access swicthes (2960, 3650's) which have POE and Cisco 7962 phones connected.  After the upgarde and subsequent reboot, the IP phones failed to power up and are effectively dead. All that happen on the phone now is tha...

I have multiple nexus 2Ks connected to two N7Ks with my servers connecting to multiple N2Ks accordingly with dual NIC failover capability.What happens, or what state do the N2K interfaces go into if one of my N7K's looses power given the N2K is effec...

I am looking for a guide on how to Harden my VPN router.  Specifically I am looking for what ACL rules I should be applying on my public exposed interface to ensure only L2L and RA VPNs can establish.Should I only enable the following ports and deny ...

I am in a position where i need to upgrade from Fabric-1 modules to Fabric-2 modules in my Nexus 7010.Can these modules interoperate together in the same chasis to potentially perform the change without disruption to the Nexus or do I need to plan an...

Can anyone tell me of their good or bad experiences with the 4500 supervisor V and/or Supervisor V-10GE?