We have been having an issue with our Catalyst 3560 switch running IOS 12.2(37) where the devices plugged into it can run a continuous ping without issue within the same VLAN fine but when we disconnect the CSU connection from the router the switch stops sending ICMP requests to the devices only after 4 hrs. The result is the devices start to get a "request timeout" message where they were working just fine for 3 hr and 59 minutes. It seems like this issue happens right at the 4 hr mark and you can set your watch to it.
Can someone tell me what part of the switch config could be causing this to happen? I am new to Networking so they tasked me with trying to figure out this problem.
Part of the config that I think look suspicious is the "mac-address-table aging-time" settings. I have taken part of the config out to share with you and want to know if this is a problem or not.
mac-address-table aging-time 0
mac-address-table aging-time 0 vlan 1
mac-address-table aging-time 0 vlan 2
mac-address-table aging-time 0 vlan 3
Any help would be appreciated.