we had recently deployed AAA authentication for authenticate aministrative session on our telecom devices. I have noticed when a Catalyst 2960 switch as justed reload is't not possible to log to in if the switch is not able to communication with TACACS server. We have to wait 5 to 6 minute before able to authenticate.
Th tacacs-server timeout is at it's default value of 5 sec.... after the switch if the switch have a system uptime bigger then 6 minutes I have only to wait the timeout value to loggin in. If the system uptime is less then 5 minutes all authentication request failed....
we are using IOS version c2960-lanbasek9-tar.122-52.SE
is this issue have any solution, is it documented ?