When identical Supervisor hardware is placed in slots 1 and 2 of Catalyst 5500 and 6000 series switches, one Supervisor is active and the other is in standby mode.
In the event of a failure, the redundant Supervisor takes over switch functionality.
Configuration files and operating system files are synchronized between switches.
Layer 2 tables are synchronized between the supervisors for quick transitions between modules.
Parameters such as the Layer 2 synchronization and operating system synchronization can be managed for the modules.
Layer 3 MSFC cards operate independently of the COS and must be managed manually or configured for redundancy in the MSFC IOS. See section “8-4: MSFC Redundancy with Single Router Mode” and ...