May 13 11:02:14: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/10, changed state to downMay 13 11:02:17: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/10, changed state to upMay 13 11:02:38: %SW_MATM-4-MACFLAP_NO...

What's the difference between a Catalyst 4500 and a Catalyst 4500E series chassis? I believe it has to to do with supporting PoE+? Are the blades in both series interchangable?                   

I'm trying to connect a 4500 switch to our existing network. We are connection using 10gig modules. The problem is when we connect the router to the switch the interface starts flapping and error disables itself. I walked the whole path looping the f...

When have approximately 30 AP1231G installed using authenication and some are having a problem with connectivity. The signal strength is usually excellent but the cloud in windows says "either little or no connectivity". They all have the same softwa...

I'm having a problem with some APs. Some of the APs will not authenicate until you are close to them. Others there's no problem. Sometimes my portable will ask for my credentials again and sometimes not. All APs have the same IOS version of Version 1...