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Why is Flow binding needed? Applications may run more efficiently on one access technology than others (e.g. VoIP needs QoS capabilities in the radio access, FTP doesn’t). Different access technologies may be available through different IP subnets => different interfaces on a host. MIPv6 does not allow a MN to allocate different CoAs to different flows. Flow bindings allow the MN to associate flows to different CoAs for optimal utilisation of available interfaces. Flow bindings as MIPv6 extensions allow the MN to split flows from HA/CN/MAP, for flows initiated or terminated by MN. Flow bindings in MIPv6 are independent of application capability (i.e. whether session control is present or not). |