Redundant Supervisors

The redundant supervisor module is an auxiliary "standby" supervisor module that acts as a fault-tolerant supervisor in the event that the "Active" supervisor fails. Once the redundant supervisor is installed, loaded with the same software version as the Active supervisor, and synchronized, it is ready to act as a redundant or "standby" supervisor. If the Active supervisor does fail, the redundant supervisor assumes control of network operation. No user intervention is required for the Supervisor module failover. The management view is accessible without changing IP or MAC addresses. The event is logged and indicated via an SNMP trap. Notification of this change is provided by a console message and an event log message.