We change a CPE router connected to a switch 2950 to a new CPE router. But after the change on teh switch we have :
Jun 9 14:10:35.091: %ETHCNTR-3-LOOP_BACK_DETECTED: Keepalive packet loop-back detected on FastEthernet0/5. Jun 9 14:10:35.091: %PM-4-ERR_DISABLE: loopback error detected on Fa0/5, putting Fa0/5 in err-disable state Jun 9 14:10:36.091: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/5, changed state to down Jun 9 14:10:37.099: %LINK-3-UPDOWN: Interface FastEthernet0/5, changed state to down
when I put back the hold router still same issue.
I can bring up the interface with no keepalive, but still issue with the loop
If I change manually the mac address then the interafce came up, but still not passing any traffic
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...