From the most significant Mobile router which to the network outside mannered null

摘要

PROBLEM TO BE SOLVED: To provide a method capable of reducing communication paths of stationary nodes (SN), mobile nodes (MN) and other MR which are connected to a mobile network (MNW) of some mobile router (MR) without changing mounting of the correspondent node (CN) of an external network in a mobile IPv6.;SOLUTION: One or more other MRn:n1 ranging from a highest order mobile router (MR1) connected to an external network to MN which are hierarchically connected are provided. The method has a step in which each higher order MR transmits a router advertisement message consisting of the home address (MR1-HoA) to a low order MR or MN, and a lower order MR or MN transmits a Binding Update message consisting of a cared address (CoA) and a home address (HoA) to the highest order MR; and a second step in which the high order MR tunnels a packet to be transmitted to the low order MR or MN with the cared address (CoA).;COPYRIGHT: (C)2005,JPO&NCIPI