We've had a problem on our network recently with trunk ports error disabling on our switch stacks with the following error.
45w5d: %ETHCNTR-3-LOOP_BACK_DETECTED: Keepalive packet loop-back detected on Gig
45w5d: %PM-4-ERR_DISABLE: loopback error detected on Gi0/2, putting Gi0/2 in err
45w5d: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/2, chang
ed state to down
I plan to disable keepalives on the uplinks to solve the problem (we are using 12.1(14)EA1a IOS). Can anyone see any potential issues with this? Also should I do this from both sides (access and core)?