hi all,
we have a C3750 and C3560 trunk together and found the link to be intermittent. we have set both ends to 100/full, changed UTP cable and changed switch ports but still the same. any idea what to do next?
3750#sh log | i FastEthernet1/0/1
Dec 14 01:08:03.231 SGT: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/1, changed state to up
Dec 14 01:08:06.276 SGT: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/1, changed state to down
Dec 14 01:08:08.331 SGT: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/1, changed state to up
Dec 14 01:08:18.590 SGT: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/1, changed state to down
Dec 14 01:08:20.646 SGT: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/1, changed state to up
Dec 14 01:08:31.677 SGT: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/1, changed state to down
Dec 14 01:08:32.675 SGT: %LINK-3-UPDOWN: Interface FastEthernet1/0/1, changed state to down
Dec 14 01:08:36.182 SGT: %LINK-3-UPDOWN: Interface FastEthernet1/0/1, changed state to up
Dec 14 01:08:37.188 SGT: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/1, changed state to up
Dec 14 01:10:03.164 SGT: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/1, changed state to down
Dec 14 01:10:04.171 SGT: %LINK-3-UPDOWN: Interface FastEthernet1/0/1, changed state to down
Dec 14 01:11:22.412 SGT: %LINK-3-UPDOWN: Interface FastEthernet1/0/1, changed state to up
Dec 14 01:11:23.419 SGT: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/1, changed state to up
Dec 14 01:11:26.279 SGT: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/1, changed state to down
Dec 14 01:11:27.277 SGT: %LINK-3-UPDOWN: Interface FastEthernet1/0/1, changed state to down
Dec 14 01:11:29.308 SGT: %LINK-3-UPDOWN: Interface FastEthernet1/0/1, changed state to up
Dec 14 01:11:30.314 SGT: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/1, changed state to up
Dec 14 01:11:38.602 SGT: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/1, changed state to down
Dec 14 01:11:39.600 SGT: %LINK-3-UPDOWN: Interface FastEthernet1/0/1, changed state to down
Dec 14 01:11:41.622 SGT: %LINK-3-UPDOWN: Interface FastEthernet1/0/1, changed state to up
Dec 14 01:11:42.629 SGT: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/1, changed state to up
Dec 14 01:11:51.689 SGT: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/1, changed state to down
Dec 14 01:11:52.695 SGT: %LINK-3-UPDOWN: Interface FastEthernet1/0/1, changed state to down
Dec 14 01:11:56.235 SGT: %LINK-3-UPDOWN: Interface FastEthernet1/0/1, changed state to up
Dec 14 01:11:57.242 SGT: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/1, changed state to up
Dec 14 04:55:02.989 SGT: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/1, changed state to down
Dec 14 04:55:03.987 SGT: %LINK-3-UPDOWN: Interface FastEthernet1/0/1, changed state to down
Dec 14 05:07:57.382 SGT: %LINK-3-UPDOWN: Interface FastEthernet1/0/1, changed state to up
Dec 14 05:07:58.389 SGT: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/1, changed state to up
Dec 14 05:08:01.384 SGT: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/1, changed state to down
Dec 14 05:08:03.430 SGT: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/1, changed state to up
Dec 14 05:08:13.665 SGT: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/1, changed state to down
Dec 14 05:08:14.663 SGT: %LINK-3-UPDOWN: Interface FastEthernet1/0/1, changed state to down
Dec 14 05:08:16.693 SGT: %LINK-3-UPDOWN: Interface FastEthernet1/0/1, changed state to up
Dec 14 05:08:17.700 SGT: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/1, changed state to up
Dec 14 05:08:26.759 SGT: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/1, changed state to down
Dec 14 05:08:27.758 SGT: %LINK-3-UPDOWN: Interface FastEthernet1/0/1, changed state to down
Dec 14 05:08:31.256 SGT: %LINK-3-UPDOWN: Interface FastEthernet1/0/1, changed state to up
Dec 14 05:08:32.262 SGT: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/1, changed state to up
