Enable Stateful Switchover (SSO) on Cisco Switch Supervisor Modules

Stateful Switchover (SSO) synchronizes process and configuration information between supervisor modules to enable a fast transparent failover.

Router(config)# redundancy

Router(config-red)# mode sso

Router(config-red)# end

Router# show redundancy states

my state = 13 -ACTIVE

peer state = 8 -STANDBY HOT

Mode = Duplex

Unit = Primary

Unit ID = 5

Redundancy Mode (Operational) = sso

Redundancy Mode (Configured) = sso

Split Mode = Disabled

Manual Swact = Enabled

Communications = Up

client count = 29

client_notification_TMR = 30000 milliseconds

keep_alive TMR = 9000 milliseconds

keep_alive count = 1

keep_alive threshold = 18

RF debug mask = 0x0

Router#