5

Route Optimization

When a mobile node communicates with other nodes, all packets are forwarded by a home agent if the mobile node is away from home. This causes a communication delay, especially if the mobile node and its peer node are located on networks that are topologically close and the home agent is far away. The worst case is when both nodes are on the same network.

The Mobile Internet Protocol version 6 (IPv6) specification provides a solution to this problem. If the peer node supports the Mobile IPv6 correspondent node function, the path between a mobile node and the peer node can be optimized. To optimize the path, a mobile node sends a Binding Update message to the correspondent node. The message must not have the H and L flags set ...

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