This paper presents performance comparison among ve strategies for mobile support. The major facilities that are required for a network protocol to support mobile hosts are location management and packet forwarding. Based on this observation, we consider ve basic strategies which use distinct methods to achieve these facilities and compare their performance. These ve strategies are Broadcast Notication (BN), Broadcast Forwarding (BF), Broadcast Query (BQ), Default Forwarding (DF), and Default

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... ery (DQ). As a result of analytical evaluation and comparison, it is shown that under dierent network conditions, such as number of routers, network topology, migration/communication ratio, data/control packet size ratio, dierent strategies produce minimum network trac. In short, DF and DQ show the best performance in scalability, while BF and BQ are ecient for frequent migration. On the other hand, BN is suitable for a small network which has hosts with rare migration.