I have configured AAA on Cisco 2960 & also configured AAA client in Acs 5.2. But i am not able to login via Tacacs & i have to login via local. Here is config on Switch: aaa new-model!!aaa authentication login default group tacacs+ localaaa authentic...

1 PVDM2 64 was already inserted but after inserting another PVDM2 64 the router Cisco 2811 was not booting IOS & router was going in ROMMON mode. While executing  # dir flash: in ROMMON mode it was showing bad RAM. Just want to know that is RAM gone...