Cisco IOS Cookbook, 2nd Edition

Using HSRP for Home Agent Redundancy

Problem

You want to set up redundant Home Agents to improve network availability for your Mobile Nodes.

Solution

For this recipe, we must configure two nearly identical Home Agent routers. Here is the configuration of the first one:

RouterHome1#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
RouterHome1(config)#interface FastEthernet0/0
RouterHome1(config-if)#ip address 192.168.9.2 255.255.255.0
RouterHome1(config-if)#standby 1 ip 192.168.9.1
RouterHome1(config-if)#standby 1 name HA-GROUP
RouterHome1(config-if)#exit
RouterHome1(config)#router mobile
RouterHome1(config-router)#exit
RouterHome1(config)#router eigrp 99
RouterHome1(config-router)#redistribute mobile
RouterHome1(config-router)#network 192.168.9.0
RouterHome1(config-router)#network 192.168.10.0
RouterHome1(config-router)#default-metric 10000 10 255 1 1500
RouterHome1(config-router)#no auto-summary
RouterHome1(config-router)#exit
RouterHome1(config)#ip mobile home-agent address 192.168.9.1
RouterHome1(config)#ip mobile home-agent redundancy HA-GROUP virtual-network
RouterHome1(config)#ip mobile virtual-network 192.168.10.0 255.255.255.0
RouterHome1(config)#ip mobile host 192.168.10.1 192.168.10.254 virtual-network 192.168.10.0 255.255.255.0
RouterHome1(config)#ip mobile secure home-agent 192.168.9.3 spi 100 key ascii cisco
RouterHome1(config)#ip mobile secure host 192.168.10.110 spi 100 key ascii cookbook
RouterHome1(config)#ip mobile secure host 192.168.10.111 ...