Hello all,I am having trouble with a GRE tunnel between two buildings on my campus. Here is the background. I have a three buildings that I am concerned about right now. My primary building has a C4510 core switch and buildings 12 and 24 both have a ...

Hello,I have been smacking my head into a wall repeatedly trying to figure out the problem with some of my switches. My network covers a campus of 7 buildings. I have a C4510 core for my network and distribution node that consists of a stack of 2-5 C...

Hello all,I'm having an issue with some of my access switches and am hoping that you may be able to help. My network consists of 7 separate buildings across the compound, let's call them Buildings 1-7. Building 1 contains my core (C4510R), DMZ (C3850...

Hello all, We have two Cisco CP-8841 VoIP phones connected to a Catalyst 2960-CX switch that reaches back to our core. Both phones worked as expected until Friday of last week. One phone (phone A), connected to G0/5 is no longer able to connect. The ...