Cisco Systems 6500 Standby ip, Secondary, Defaults Command Modes Command History Usage Guidelines

Chapter 2 Commands for the Catalyst 6500 Series SSL Services Module

standby ip

standby ip

To activate HSRP, use the standby ip command. Use the no form of this command to disable HSRP.

standby [group-number]ip [ip-address [secondary]]

no standby [group-number]ip [ip-address]

Syntax Description	group-number	(Optional) Group number on the interface for which HSRP is being activated.
	ip-address	(Optional) IP address of the hot standby router interface.
	secondary	(Optional) Indicates the IP address is a secondary hot standby router interface.

Defaults

Command Modes

Command History

Usage Guidelines

The defaults are as follows:

•group-number is 0.

•HSRP is disabled by default.

Subinterface configuration submode

Release	Modification
SSL Services Module	Support for this command was introduced on the Catalyst 6500 series
Release 2.1(1)	switches.
SSL Services Module	The command mode for this command was changed from Proxy-VLAN to
Release 3.1(1)	Subinterface.

The standby ip command allows you to configure primary and secondary HSRP addresses.

The standby ip command activates HSRP on the configured interface. If you specify an IP address, that address is used as the designated address for the hot standby group. If you do not specifiy an IP address, the designated address is learned through the standby function. So that HSRP can elect a designated router, at least one router on the cable must have been configured with, or have learned, the designated address. Configuring the designated address on the active router always overrides a designated address that is currently in use.

When you enable the standby ip command on an interface, the handling of proxy ARP requests is changed (unless proxy ARP was disabled). If the hot standby state of the interface is active, proxy ARP requests are answered using the MAC address of the hot standby group. If the interface is in a different state, proxy ARP responses are suppressed.

When you use group number 0, no group number is written to NVRAM, providing backward compatibility.

Catalyst 6500 Series Switch SSL Services Module Command Reference

OL-9105-01 2-99