Simon wrote:
> I'll do a more in depth explanation tomorrow. Essentially, this started
> happening, on every interswitch trunk on most switches on the network:
>
> Oct 6 14:09:07: %ETHCNTR-3-LOOP_BACK_DETECTED: Keepalive packet loop-back
> detected on FastEthernet0/24.
> Oct 6 14:09:07: %PM-4-ERR_DISABLE: loopback error detected on Fa0/24,
> putting Fa0/24 in err-disable state Oct 6 14:09:08: %LINEPROTO-5-UPDOWN:
> Line protocol on Interface FastEthernet0/24, changed state to down Oct 6
> 14:09:09: %LINK-3-UPDOWN: Interface FastEthernet0/24, changed state to down
> Oct 6 14:09:50: %PM-4-ERR_RECOVER: Attempting to recover from loopback
> err-disable state on Fa0/24 Oct 6 14:09:55: %LINK-3-UPDOWN: Interface
> FastEthernet0/24, changed state to up Oct 6 14:09:57: %LINEPROTO-5-UPDOWN:
> Line protocol on Interface FastEthernet0/24, changed state to up Oct 6
> 14:09:57: %ETHCNTR-3-LOOP_BACK_DETECTED: Keepalive packet loop-back detected
> on FastEthernet0/24.
Any further word on the more in depth explanation?
Interested from both a customer perspective and a technical perspective
- good to learn from these things.
Regards,
Anton
