Cisco IOS Cookbook, 2nd Edition

Making a Router a Mobile Node

Problem

You want to configure a router to act as a Mobile Node.

Solution

The configuration required to make a router act as a Mobile Node must specify the Home Agent and match its authentication parameters:

RouterMobile#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
RouterMobile(config)#router mobile
RouterMobile(config-router)#exit
RouterMobile(config)#ip mobile secure home-agent 192.168.9.1 spi 100 key ascii cookbook
RouterMobile(config)#ip mobile router
RouterMobile(mobile-router)#address 192.168.10.112 255.255.255.0
RouterMobile(mobile-router)#home-agent 192.168.9.1
RouterMobile(mobile-router)#exit
RouterMobile(config)#interface FastEthernet0/0
RouterMobile(config-if)#ip address 192.168.10.112 255.255.255.0
RouterMobile(config-if)#ip irdp
RouterMobile(config-if)#ip mobile router-service roam
RouterMobile(config-if)#ip mobile router-service solicit
RouterMobile(config-if)#exit
RouterMobile(config)#end
RouterMobile#

Discussion

Starting in IOS Version 12.2(4)T, Cisco introduced the ability for a router to act as a Mobile Node. This may sound somewhat strange because routers don’t generally get up and roam around the network. But, in fact, it makes a great deal of sense to have this capability. For example, in the Introduction to this chapter we mentioned the idea of putting a mobile network on a train. In this example, users on the train can connect to a local network segment and let the router handle the task of roaming ...