In my catalyst 4506 switch some of the users loose their connectivity to the gateway in their pc for a certain period.If the ip is renwed in pc or the port is reseted in the switch then the pc will regain the reachabilty to the gateway.The lan connection is always showing connected even when it looses the reacability to gateway.The switching is running IOS 12.2(25)EWA7.I'm not seeing any loggs on switch also.
