details of port configuration are
Port Name Status Vlan Duplex Speed Type
Gi1/0/40 connected trunk full 100 10/100/1000BaseTX
sh inter Gi1/0/40 stat
GigabitEthernet1/0/40
Switching path Pkts In Chars In Pkts Out Chars Out
Processor 0 0 4485334 303709284
Route cache 0 0 0 0
Total 0 0 4485334 303709284
Current configuration : 309 bytes
!
interface GigabitEthernet1/0/40
description
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 230-232
switchport mode trunk
load-interval 30
speed 100
duplex full
storm-control broadcast level 5.00
no cdp enable
end
007731: May 16 11:13:42.632 GMT: %ETHCNTR-3-LOOP_BACK_DETECTED: Loop-back detected on GigabitEthernet1/0/40.
007732: May 16 11:13:42.632 GMT: %PM-4-ERR_DISABLE: loopback error detected on Gi1/0/40, putting Gi1/0/40 in err-disable state
007733: May 16 11:13:43.764 GMT: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/40, changed state to down
007734: May 16 11:13:44.771 GMT: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/40, changed state to down
007735: May 16 11:14:09.568 GMT: %PM-4-ERR_RECOVER: Attempting to recover from loopback err-disable state on Gi1/0/40
007736: May 16 11:14:15.758 GMT: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/40, changed state to up
007737: May 16 11:14:17.897 GMT: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/40, changed state to up
