Cisco Catalyst 3550 User Manual

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Catalyst 3550 Multilayer Switch Command Reference
OL-8566-02
Chapter 2 Catalyst 3550 Switch Cisco IOS Commands
cluster standby-group
cluster standby-group
Use the cluster standby-group global configuration command to enable command-switch redundancy
by binding the cluster to an existing Hot Standby Router Protocol (HSRP). Entering the
routing-redundancy keyword enables the same HSRP group to be used for command-switch redundancy
and routing redundancy. Use the no form of this command to return to the default setting.
cluster standby-group HSRP-group-name [routing-redundancy]
no cluster standby-group
Syntax Description
Defaults The cluster is not bound to any HSRP group.
Command Modes Global configuration
Command History
Usage Guidelines You must enter this command only on the command switch. If you enter it on a member switch, an error
message appears.
The command switch propagates the cluster-HSRP binding information to all cluster-HSRP capable
members. Each member switch stores the binding information in its NVRAM.
The HSRP group name must be a valid standby group; otherwise, the command exits with an error.
The same group name should be used on all members of the HSRP standby group that is to be bound to
the cluster. The same HSRP group name should also be used on all cluster-HSRP capable members for
the HSRP group that is to be bound. (When not binding a cluster to an HSRP group, you can use different
names for the cluster commander and the members.)
Examples This example shows how to bind the HSRP group named my_hsrp to the cluster. This command is
executed on the command switch.
Switch(config)# cluster standby-group my_hsrp
This example shows how to use the same HSRP group named my_hsrp for routing redundancy and
cluster redundancy:
Switch(config)# cluster standby-group my_hsrp routing-redundancy
HSRP-group-name Name of the HSRP group that is bound to the cluster. The group name is
limited to 32 characters.
routing-redundancy (Optional) Enable the same HSRP standby group to be used for
command-switch redundancy and routing redundancy.
Release Modification
12.1(4)EA1 This command was introduced.

Cisco Catalyst 3550 Specifications

General

Category	Switch
QoS	Yes
Form Factor	Rack-mountable
Manageable	Yes
RAM	64 MB
Model	Catalyst 3550
Uplink Ports	2 x GBIC (Gigabit Interface Converter) or SFP (Small Form-factor Pluggable)
Layer Support	Layer 3
VLAN Support	Yes
MAC Address Table Size	12000 entries
Routing Protocol	EIGRP
Features	QoS
Operating Temperature	32 to 113°F (0 to 45°C)
Operating Humidity	10 - 95% (non-condensing)
Ports	24 or 48 10/100 ports