02-22-2017 02:35 AM
Feb 15 19:44:24.602 IST: %ETHCNTR-3-LOOP_BACK_DETECTED: Loop-back detected on GigabitEthernet0/1.
Feb 15 19:44:24.602 IST: %PM-4-ERR_DISABLE: loopback error detected on Gi0/1, putting Gi0/1 in err-disable state
02-22-2017 02:46 AM
02-22-2017 08:39 AM
Feb 15 19:44:24.602 IST: %ETHCNTR-3-LOOP_BACK_DETECTED: Loop-back detected on GigabitEthernet0/1.
got only this log msg from SW. we did shut no shut on trunk interface
02-23-2017 07:41 AM
- It means you had a loop; these are very dangerous and can lead to a network meltdown; check your network topology and spanning-tree.
M.
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