Cisco Cisco IOS Software Release 12.2(14)SX

© 2007 Cisco Systems, Inc. All rights reserved.

The SSO—HSRP feature alters the behavior of HSRP when a router with redundant Route Processors 
(RPs) is configured for statefule switchover (SSO). When an RP is active and the other RP is standby, 
SSO enables the standby RP to take over if the active RP fails.

Configuration information is included in the “Configuring HSRP” module in the “First Hop Redundancy 
Protocols” section of the Cisco IOS IP Application Services Configuration Guide, Release 12.4T,

at the 

following URL:

The following sections provide information about this feature:

Configuring SSO HSRP

HSRP and SSO Working Together

Enabling SSO Aware HSRP

Verifying SSO Aware HSRP

For a complete list of features included in the “Configuring HSRP” module, see the Feature Information 
Table located toward the end of the module.

Command reference information is included in the Cisco IOS IP Application Services Command 
Reference, Release 12.2SX, at the following URL:

The following commands are new or modified for this feature: