We've seen this error a few times now on a 6500, SUP1A with different FastEthernet and GigE cards, and have replaced 3 different cards, in 3 different slots.
(As per the online documentation).
At this point we don't think the issue is card related (contrary to the documentation).
As of now we have switched to the standby sup module.
Any suggestions are appreciated
log as follows:
Sep 16 22:03:58.070 PST8PDT: %EOBC-SP-2-EOBC_JAM: EOBC channel is jammed. Attempting to diagnose the source of the problem and recover if possible.
*Sep 16 22:03:58.138 PST8PDT: %EOBC-SP-2-EOBC_JAM_RECOVERED: Module in slot 6 is jamming the EOBC channel. It has been disabled. Replace the line card.
*Sep 16 22:04:20.451 PST8PDT: %C6KPWR-SP-4-DISABLED: power to module in slot 6 set off (admin request)
Sep 16 22:04:20.523 PST8PDT: %SNMP-5-MODULETRAP: Module 6 [Down] Trap
*Sep 16 22:04:20.459 PST8PDT: %OIR-SP-3-PWRCYCLE: Card in module 8, is being power-cycled off (Reset)
Sep 16 22:04:20.767 PST8PDT: %SNMP-5-MODULETRAP: Module 8 [Down] Trap
*Sep 16 22:04:20.707 PST8PDT: %C6KPWR-SP-4-DISABLED: power to module in slot 8 set off (Reset)
Sep 16 22:05:02.715 PST8PDT: %SNMP-5-MODULETRAP: Module 8 [Up] Trap
*Sep 16 22:05:02.711 PST8PDT: %OIR-SP-6-INSCARD: Card inserted in slot 8, interfaces are now online
Sep 16 22:19:33.341 PST8PDT: %SNMP-5-MODULETRAP: Module 6 [Up] Trap
*Sep 16 22:19:33.337 PST8PDT: %OIR-SP-6-INSCARD: Card inserted in slot 6, interfaces are now online
If the issue is not happening with the standby sup, then have you tried replacing the sup1a?
Have you tried the cards that failed in other working slots?