Cisco Cisco IOS Software Release 12.2(33)SRE
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FHRP—HSRP Multiple Group Optimization
The FHRP—HSRP Multiple Group Optimization feature improves the negotiation and maintenance of
multiple Hot Standby Router Protocol (HSRP) groups configured on a subinterface. Only one HSRP
group is required on a physical interface for the purposes of electing active and standby routers. This
group is known as the master group. Other HSRP groups may be created on each subinterface and linked
to the master group via the group name. These linked HSRP groups are known as client or follow groups.
multiple Hot Standby Router Protocol (HSRP) groups configured on a subinterface. Only one HSRP
group is required on a physical interface for the purposes of electing active and standby routers. This
group is known as the master group. Other HSRP groups may be created on each subinterface and linked
to the master group via the group name. These linked HSRP groups are known as client or follow groups.
Configuration Information
Configuration information is included in the “Configuring HSRP” 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:
•
HSRP Multiple Group Optimization
•
Improving CPU and Network Performance with HSRP Multiple Group Optimization
•
Improving CPU and Network Performance with HSRP Multiple Group Optimization: Example
For a complete list of features included in the “Configuring HSRP” module, see the Feature Information
Table located toward the end of the module.
Table located toward the end of the module.
Command Reference Information
Command reference information is included in the Cisco IOS IP Application Services Command
Reference, Release 12.2SR, at the following URL:
Reference, Release 12.2SR, at the following URL:
New or Modified Commands
The following commands are new or modified for this feature:
•
standby follow
•
show standby