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Configuring Mobile IP
Mobile IP Configuration Examples
IPC-188
Cisco IOS IP Configuration Guide
standby ip 1.0.0.10
standby name SanJoseHA
! specifies global HA address=HSRP group address to be used by all mobile nodes
ip mobile home-agent address 1.0.0.10
ip mobile virtual-network 20.0.0.0 255.0.0.0
ip mobile virtual-network 30.0.0.0 255.0.0.0
! used to map to the HSRP group SanJoseHA
ip mobile home-agent standby SanJoseHA virtual-network
ip mobile secure home-agent 1.0.0.1 spi 100 key hex 00112233445566778899001122334455
Mobile Node and Home Agent on Same Subnet
For each virtual network, a loopback address is configured on the HA to be on the same subnet as the
virtual network. It is only necessary to configure one loopback interface and to assign different IP
addresses to the loopback interface for each virtual network using the ip address ip-address mask
[secondary] interface configuration command. A mobile node on a particular virtual network uses the
HA IP address =loopback address configured for that virtual network. When a standby HA comes up, it
also uses this HA IP address to retrieve mobility bindings for mobile nodes on a particular virtual
network.
HA1 Configuration
interface ethernet0
ip address 1.0.0.1 255.0.0.0
standby ip 1.0.0.10
standby name SanJoseHA
! loopback to receive registration from MN on each virtual-network
interface loopback0
ip address 20.0.0.1 255.255.255.255
ip address 30.0.0.1 255.255.255.255 secondary
ip mobile home-agent
! address used by Standby HA for redundancy (update and download) for
! each virtual-network
ip mobile virtual-network 20.0.0.0 255.0.0.0 address 20.0.0.1
ip mobile virtual-network 30.0.0.0 255.0.0.0 address 30.0.0.1
! used to map to the HSRP group SanJoseHA
ip mobile home-agent standby SanJoseHA virtual-network
ip mobile secure home-agent 1.0.0.2 spi 100 key hex 00112233445566778899001122334455
HA2 Configuration
interface e0
ip address 1.0.0.2 255.0.0.0
standby ip 1.0.0.10
standby name SanJoseHA
! loopback to receive registration from MN on each virtual-network
interface loopback0
ip address 20.0.0.1 255.255.255.255
ip address 30.0.0.1 255.255.255.255 secondary
ip mobile home-agent
! address used by Standby HA for redundancy (update and download) for
! each virtual-network
ip mobile virtual-network 20.0.0.0 255.0.0.0 address 20.0.0.1
ip mobile virtual-network 30.0.0.0 255.0.0.0 address 30.0.0.1
! used to map to the HSRP group SanJoseHA
ip mobile home-agent standby SanJoseHA virtual-network
ip mobile secure home-agent 1.0.0.1 spi 100 key hex 00112233445566778899001122334455