Configuring Cluster Redundancy

If cluster members are command-capable, you can configure them into a cluster redundancy group. CMS uses the Hot Standby Router Protocol (HSRP) to transfer command responsibility to a switch in the cluster redundancy group if the command switch becomes unavailable. Failover is transparent. This precaution ensures that you always have a command switch and can continually manage the cluster.

To configure cluster redundancy, add switches to the group, remove them, or remove the entire group, choose Cluster > Standby Command Switches and use the Standby Command Switches window.

Note: Failovers normally require 13 to 17 seconds to reestablish connections to member switches, but this process can require as long as 2 minutes depending on the availability of member information being transferred.