COMMUNICATION SYSTEM, MOBILE NODE, ACCESS POINT, AND TRANSFER PATH LEARNING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a mobile node for efficiently updating BFT by learning a MAC unicast address and a MAC multicast address of MH in response to the movement of the MH.

SOLUTION: A communication system disclosed herein includes: access points (APs) each providing an access link to mobile nodes (MNs); and a layer 2 switch for relaying data between the AP and an AR of a next hop from a communication destination node of the MN. The MN1 includes a routing information notice section 11 that informs the AP and the layer 2 switch in a subnet wherein the MN1 resides about routing information including a data link layer unicast address and a data link layer multicast address of a packet addressed to the MN1 when the MN1 is started and the MN1 switches its connection to the AP in the subnet wherein the MN1 resides.

COPYRIGHT: (C)2006,JPO&NCIPI