Re: CAT 6500 - Two Core Switches - Both Showing HIGH CPU UTILIZA
You need to look at how it is configured . How many vlans are defined ? Does it have a lot of trunk links ? If so are all unneeded vlans "manually" pruned (not allowed) off all trunk links ? If you do not prune all unneded vlans off your trunks the switch has to keep a instance of spanning tree for all those vlans . That is definitly way too . I'll guarantee it is haveing some effect on customer traffic if its that high . Start checking around , see if the roots for all spanning trees are where they are supposed to be and blocked ports are where you think they should be . Make sure all user ports have portfast turned on if it isn't this causes constant churn of the spanning tree because TCN's are constantly going on and fast aging the cam tables .
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...