I have several Cisco 2960 and 2950 switches across our campus that most of the time work perfectly. However, infrequently, I lose communication with them, i.e. cannot ping the ip address assigned and therefore can no longer manage them.
Via console I cannot ping anything connected to or outside the switch nor can I ping the default gateway. All traffic through the switch works including vtp and cdp traffic so it's not a loss of service, just switch management. I can manage switches downstream from a switch that is not communicating.
A reboot sometimes brings it back but other times not. All interfaces are enabled and not shut down.
Uplinks are set statically to trunk mode. All ip addresses are on the same vlan as the core switch / default gateway.
Any ideas?
