Draw a basic Mobile IP topology.
Which command enables the Mobile IP process on a router?
Answer: The router mobile command enables the Mobile IP process on a router.
What are virtual networks and why are they used?
Answer: Virtual networks commonly support nodes that never physically come home. Virtual networks are expressed as a network number and mask. Similar to a loopback interface, a virtual network is always up and not susceptible to physical failures, thereby ensuring higher availability.
Give an example of a basic Home Agent configuration with the following features: Home Agent address 192.168.1.2, virtual network 192.168.100.0/24, and Mobile Node 192.168.100.10 residing on the virtual network. Don't forget to include the Mobile-Home security association.
hostname HA ! interface Ethernet0/0 ip address 192.168.1.2 255.255.255.0 ! router mobile ! ip mobile home-agent ip mobile virtual-network 192.168.100.0 255.255.255.0 ip mobile host 192.168.100.10 virtual-network 192.168.100.0 255.255.255.0 ip mobile secure host 192.168.100.10 spi 100 key hex 1234567890abcdef1234567890abcdef ! end
Give an example of a FA configuration with the following features: FA address 192.168.3.2 and CoA 192.168.5.1 on Ethernet 1/0.
hostname FA1 ! interface Ethernet0/0 ip address 192.168.3.2 255.255.255.0 ! interface Ethernet1/0 ip address 192.168.5.1 255.255.255.0 ip mobile foreign-service ! router mobile ! ip mobile foreign-agent care-of Ethernet1/0 ! end
Give an example of an IOS Mobile Networks configuration with Home Agent 192.168.1.2 and Home Address 169.254.255.1.
hostname MN ! interface Loopback0 ip address 192.168.100.10 255.255.255.255 ! interface Ethernet0/0 ip address 169.254.255.1 255.255.255.0 ip mobile router-service roam ! router mobile ! ip mobile secure home-agent 192.168.1.2 spi 100 key hex 1234567890abcdef1234567890abcdef ! end
A router can serve as a Home Agent and FA at the same time.
Answer: True. One Mobile Node's Home Network can often be another node's visited network. In this case, you would want a single router to run both Home Agent and FA services.
Configuration of security associations for IOS Mobile IP is always done from the perspective of the agent that is to use that security association.
Answer: True. For example, the ip mobile secure foreign-agent\'85 command configures an HA-FA security association on the Home Agent. If the same command were configured on the Mobile Node, it would imply an MN-FA security association.
List two commands that are useful for troubleshooting on the Home Agent.
Answer: The show ip mobile binding and show ip mobile host commands are useful for troubleshooting on the Home Agent.
Name a command that is useful for troubleshooting on the FA.
Answer: The show ip mobile visitor command is useful for troubleshooting on the Foreign Agent.