Cisco Cisco IOS Software Release 12.2(27)SBC
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SSO - GLBP
Gateway Load Balancing Protocol (GLBP) is now Stateful Switchover (SSO) aware. GLBP can detect
when a router is failing over to the secondary Route Processor (RP) and continue in its current GLBP
group state.
when a router is failing over to the secondary Route Processor (RP) and continue in its current GLBP
group state.
Prior to being SSO aware, GLBP was not able to detect that a second RP was installed and configured
to take over in the event that the primary RP failed. When the primary failed, the GLBP device would
stop participating in the GLBP group and, depending on its role, could trigger another router in the group
to take over as the active router. With this enhancement, GLBP detects the failover to the secondary RP
and no change occurs to the GLBP group. If the secondary RP fails and the primary is still not available,
then the GLBP group detects this event and re-elects a new active GLBP router.
to take over in the event that the primary RP failed. When the primary failed, the GLBP device would
stop participating in the GLBP group and, depending on its role, could trigger another router in the group
to take over as the active router. With this enhancement, GLBP detects the failover to the secondary RP
and no change occurs to the GLBP group. If the secondary RP fails and the primary is still not available,
then the GLBP group detects this event and re-elects a new active GLBP router.
This feature is enabled by default.
Configuration Information
Configuration information is included in the “Configuring GLBP” module of the Cisco IOS IP
Application Services Configuration Guide, Release 12.4T
Application Services Configuration Guide, Release 12.4T
at the following URL:
The following sections provide information about this feature:
•
GLBP SSO
•
Customizing GLBP
For a complete list of features included in the “Configuring GLBP” module, see the Feature Information
Table located toward the end of the module.
Table located toward the end of the module.
For more information about SSO, see the
document at the following URL:
Command Reference Information
Command reference information is included in the Cisco IOS IP Application Services Command
Reference, Release 12.2SB at the following URL:
Reference, Release 12.2SB at the following URL: