In one of our buildings we have a number of 4500 switches to provide LAN connectivity to users and we are running out of ports. Rather then buying more blades or switches I would like to reuse some ports. So my question is how to tell if a port has not been used in say 4 weeks (to allow for vacations)?
I had thought of clearing the counters and then just coming back in 4 weeks and looking through them but we are talking about 6 4500s with 5 48 port blades in each, that's 1440 ports!
Any suggestions would be appreciated.
You might try this. We find it very useful to find unused ports:
'show int link' to show the downtime for each interface
'show int link | inc 168' to show the interfaces that have been down for a week (24x7) which you can extrapolate out to suit your needs.