Essay on Reverse Routing Header

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REVERSE ROUTING HEADER (RRH): RRH [7] uses the mechanism of source routing technique to route the packets in optimal path for the nested mobile networks, while sending the packets from MNN to CN. The Mobile Router (MR) which is connected to MNN allocates 'n' number of RRH's to the previous Mobile Router (MR) along with the tunnel header.
The last Mobile Router (MR) inserts its home address in slot 1. The destination address of the outer IPv6 header is the HA of last Mobile Router (MR), and the source address is the care-of address of last MR. When the packet arrives at previous Mobile Router (MR) the Mobile Router (MR) swaps the source address with its care-of address, and records the original source address in next slot of the RRH it
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For example a recursive binding update with source routing for route optimization. We modify the type 2 routing header, in order to be able to use several intermediate nodes, so as to obtain the optimal route from the CN to the VMN by recursive searching of the binding cache. The RBU has an advantage in that it requires no changes to the existing Mobile IP specification, except for the possibility of using multiple type 2 routing headers. R-BU scheme requires minimum modification to both the Mobile IPv6 specification and the NEMO Basic Support protocol to offer the optimal path. Therefore it is easy to integrate to the current specification.
PREFIX DELEGATION FOR ROUTE OPTIMIZATION: The basic idea behind prefix delegation-based route optimization [10] is to let Local Mobile Node (LMN), VMN and MR to obtain CoA from the prefix of the foreign network visited by the Top Level Mobile Router (TLMR), and let the CN know the CoA. Therefore, CN can send packets to this CoA to have the packets directly (without going through HAs) reach the foreign network visited by TLMR. In SPD MRs are delegated a prefix, that can be aggregated at TLMR’s foreign network prefix, to advertise inside mobile network. MNNs (except LFNs) obtain CoA from the advertised prefix, and send the CoA to their respective HAs and CNs. This scheme defines a new neighbor discovery

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