Patent ID: 8750303

Claim:
A method of exchanging mobility signaling in a session between a mobile node and a correspondent node, when the mobile node enters a communication area of a new access router and a neighboring access router, the method comprising the steps of: receiving at the neighboring access router, from the new access router: a home address of said mobile node; a Layer two address of said mobile node; and an address of said correspondent node; detecting, at the neighboring access router, a Layer two attachment of said mobile node to the neighboring access router; and upon detection of the Layer two attachment, initiating, by the neighboring access router, a reachability test with the correspondent node on behalf of the mobile node, said reachability test comprising: said neighboring access router sending a test init message to said correspondent node, wherein said correspondent node calculates a specific token; receiving from said correspondent node a test init response message comprising said specific token; and forwarding said specific token to said mobile node; wherein the neighboring access router is not the home agent of the mobile node.