Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

Poer up Avaya IP phone on POE port (C3560)

Hi ALl

I have a C3560-POE switch that has AVAYA IP PHONEs connected to it.

i configured trunk and everything, and all the data and voice connection is working properly.

When I removed the power adapter of the IP PHONE, so it can takes its power from the Switch, the network behaviour was very strange.

I couldnt ping or telnet to other switches/routers, intervlan routing for some PC's didn't work

i did shut, no shut, default interfaces (on my port) and reconfigured the port, and in the end, it is working properly with the IP PHONE power cable unplugged.

but i need to remove all the power adapters for all the ip phones, is there any recommended steps to follow, i can't repeat the above troubleshooting steps for each user.