High Availability (HA)

VSP 8600 supports High Availability (HA) controller redundancy. Each IOC module supports both I/O and supervisor/controller functionality. An IOC inserted in Slot 1/2 acts as the Primary/Standby Controller in an HA configuration.

VSP 8600 supports two HA modes: Warm Standby and Hot Standby.

• In Warm Standby mode, the configurations are synchronized between Primary and Standby IOCs. In Warm Standby mode, if there is a software failure on the Primary IOC, the Standby IOC immediately takes over and reboots all the other IOCs. If Fabric or vIST is provisioned, non-stop forwarding can be achieved by network-based resiliency enabled by these technologies.

• In Hot Standby mode, both configuration and protocol states are synchronized between Primary and Standby, ensuring a hitless switchover upon Primary IOC failure.

  

  Important

  Hot Standby does not support configurations with SPBM or IPv6 features.