cisco switch 4506 SSH and telnet not working after few days

[vishal_2007]

Cisco Switch 4506 SUP-4 ,  VRF Running ,

SSH and telnet Session not able take control the switch , Console working fine .

WorkAround : 

1) Reload ( its will work more than 10 days and Stoped the SSH and Telnet Session )

2) Line VTY 0 4 , no exec  (its working not more than 3 days and ssh and telnet not working)

3) instead of MGT IP ,open SSH with  Other VRF IP SSH working  ,than tried MGT IP its working for few days , than Stoped SSH and telnet .

[Leo Laohoo]

Could be an IOS bug.

Can you console into the blade?  If you can't or you're getting "Low memory" or something then it's an IOS bug alright.