anyone who has experienced about below logs ?
.Jan 28 14:37:05.208 CCT: %ETHCNTR-3-LOOP_BACK_DETECTED: Keepalive packet
loop-back detected on FastEthernet0/22.
.Jan 28 14:37:05.208 CCT: %PM-4-ERR_DISABLE: loopback error detected on
Fa0/22,putting Fa0/22 in err-disable state
.Jan 28 14:37:06.208 CCT: %LINEPROTO-5-UPDOWN: Line protocol on Interface
FastEthernet0/22, changed state to down
.Jan 28 14:37:07.260 CCT: %LINK-3-UPDOWN: Interface FastEthernet0/22,
changed state to down