5.1 Introduction5.2 Mobility Events and Actions5.2.1 Detecting Movement to a New Subnet5.2.2 Regaining IP Connectivity5.2.3 Packet Forwarding Subsequent to Movement5.2.4 Route-optimized Communication Between a Mobile Node and Its Correspondents5.3 How Mobile IP Supports IP Mobility5.3.1 Mobile IP Terminology5.3.2 Subnet Movement Detection in Mobile IP5.3.3 Location Update to the Home Agent, and Correspondents5.3.4 Packet Forwarding5.4 Limitations Of the Base Mobile IP protocol5.5 SummaryExercisesReferences