Below is the an output from terminal monitor in my VSS 6506 Switches.
Please help me interprate what could be going wrong here.
Apr 10 07:20:09.701: DFC1: Switch mode info received by DFC..!
000139: Apr 10 07:20:11.185: %SYS-DFC1-5-RESTART: System restarted --
Cisco IOS Software, c6lc2 Software (c6lc2-SP-VM), Version 12.2(33)SXI3, RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2009 by Cisco Systems, Inc.
Compiled Mon 26-Oct-09 23:13 by prod_rel_team
Apr 10 07:20:11.437: DFC1: Currently running ROMMON from S (Gold) region
000140: Apr 10 07:20:30.853 UTC: %DIAG-SW1_SPSTBY-6-DIAG_OK: Switch 1 Module 1: Passed Online Diagnostics
Apr 10 07:20:37.007 UTC: SW2_SP: Card inserted in Switch_number = 1 ,
physical slot 1, interfaces are now online
000141: Apr 10 20:49:58.843 UTC: SSH2 0: Unexpected mesg type received
000142: Apr 11 20:49:28.860 UTC: SSH2 0: Unexpected mesg type received
000143: Apr 12 20:48:59.426 UTC: SSH2 0: Unexpected mesg type received
000144: Apr 13 04:34:07.426 UTC: SSH2 0: Unexpected mesg type received
from experience usually this kind of events lead to a linecard change if it happens multiple times.
The impact is confined to that linecard not to the whole device.
So keep an eye on it: if it happens other times try to have the linecard extracted and then reseated firmly.
IF it is not enough it is time for an RMA of the linecard
To be noted if someone issued the "appropriate" command the module had been reset and you can see this kind of messages as well as a result of the given command.
Hope to help