Cisco Systems 78-11741-02 manual IPC-173

Configuring Mobile IP

Mobile IP HA Redundancy Configuration Task List

	Command	Purpose
Step 5
	Router(config)# ip mobile home-agent standby	Configures the home agent for redundancy using
	hsrp-group-name [[virtual-network]address address]	the HSRP group to support virtual networks.
Step 6
	Router(config)# ip mobile secure home-agent address	Sets up the home agent security association
	spi spi key hex string	between peer routers. If configured on the active
		HA, the IP address address argument is that of the
		standby HA. If configured on the standby HA, the
		IP address address argument is that of the active
		router. Note that a security association needs to be
		set up between all HAs in the standby group.

Enabling HA Redundancy for a Virtual Network Using Multiple Physical Networks

To enable HA redundancy for a virtual network using multiple physical networks, use the following commands beginning in interface configuration mode:

	Command	Purpose
Step 1
	Router(config-if)# standby [group-number] ip	Enables HSRP.
	ip-address
Step 2
	Router(config-if)# standby name hsrp-group-name1	Sets the name of the standby HSRP group 1.
Step 3
	Router(config-if)# standby name hsrp-group-name2	Sets the name of the standby HSRP group 2.
Step 4
	Router(config)# ip mobile home-agent address address	Defines the global home agent address for virtual
		networks. In this configuration, the address is the
		loopback interface address. Enter this command if
		the mobile node and home agent are on different
		subnets.
	or	or
	Router(config)# ip mobile home-agent	Enables and controls home agent services to the
		router. Enter this command if the mobile node and
		home agent are on the same subnet.
Step 5
	Router(config)# ip mobile virtual-network net mask	Defines the virtual network. If the mobile node
	[address address]	and home agent are on the same subnet, use the
		[address address] option.
Step 6
	Router(config)# ip mobile home-agent standby	Configures the home agent for redundancy using
	hsrp-group-name1 [[virtual-network]address address]	the HSRP group 1 to support virtual networks.
Step 7
	Router(config)# ip mobile home-agent standby	Configures the home agent for redundancy using
	hsrp-group-name2 [[virtual-network]address address]	the HSRP group 2 to support virtual networks.
Step 8
	Router(config)# ip mobile secure home-agent address	Sets up the home agent security association
	spi spi key hex string	between peer routers. If configured on the active
		HA, the IP address address argument is that of the
		standby HA. If configured on the standby HA, the
		IP address address argument is that of the active
		router. Note that a security association needs to be
		set up between all HAs in the standby group.

Cisco IOS IP Configuration Guide

IPC-173