If the switches are 4500s, you can use the 'show int link' command. Here is an example from a 4500 of mine. I have not seen documentation on this and I don't understand why, nor why it is only available on 4500 series. Port Name Down Time Down Since Te1/1 29 weeks, 5 days, 21 hours, 15 minutes 40 secs 20:24:52 Sat Apr 14 2012 Te1/2 29 weeks, 5 days, 21 hours, 15 minutes 40 secs 20:24:52 Sat Apr 14 2012 Gi1/3 29 weeks, 5 days, 21 hours, 15 minutes 40 secs 20:24:52 Sat Apr 14 2012 Gi1/4 29 weeks, 5 days, 21 hours, 15 minutes 40 secs 20:24:52 Sat Apr 14 2012 Gi1/5 29 weeks, 5 days, 21 hours, 15 minutes 40 secs 20:24:52 Sat Apr 14 2012 Gi1/6 29 weeks, 5 days, 21 hours, 15 minutes 40 secs 20:24:52 Sat Apr 14 2012 Gi2/1 29 weeks, 5 days, 21 hours, 15 minutes 40 secs 20:24:52 Sat Apr 14 2012 Gi2/2 29 weeks, 5 days, 21 hours, 15 minutes 40 secs 20:24:52 Sat Apr 14 2012 Gi2/3 5 weeks, 10 hours, 57 minutes 32 secs 06:43:00 Fri Oct 5 2012
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