Technical Report Number
We describe mechanisms to enhance the reliability and performance of Mobile IP. In Mobile IP today home agents and foreign agents are single points of failure and potential performance bottlenecks. For example, a home agent crash can lead to communication failure if the mobile is away from home. In this paper we describe new mechanisms to allow redundant home and foreign agents. Redundant agents can take over from each other in case of failure, and also split load amongst themselves. Our mechanisms are simple, transparent to existing mobile nodes, and compatible with the existing Mobile IP specification. We have implemented our scheme on top of an existing Mobile IP implementation, and our implementation adds about 700 lines of code. Our paper describes and defends our design choices, the synchronization protocols used, and the implementation of our fault-tolerant protocol.
Ghosh, Rajib and Varghese, George, "Fault-Tolerant Mobile IP" Report Number: WUCS-98-11 (1998). All Computer Science and Engineering Research.