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MIP Overview First: MIP != Mobility I’ll talk about MIP because it’s illustrative, other kinds of mobility need to be considered too MIP is a protocol which allows a mobile node to wander away from it’s “attachment” point (ie, the thing that subtends its prefix) through the use of L3 tunneling Home Agent is that attachment point for both forward and reverse tunnels IPv4 tunnels to a “Foreign Agent” on the remote network IPv6 colocates FA into the mobile node IPv6 also allows direct mobile node/correspondent node communication – makes signaling much more complex Various schemes for localized tunneling for fast handovers |