Monday, April 4, 2011

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#

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