Patent ID: 7362727
Filing Date: 2008-04-22
Classification: H04L,H04W

Abstract:
1. A method of controlling routing of packets in a connectionless routing protocol network including an infrastructure of packet switching nodes interconnected by packet transport links, and a plurality of access nodes to which a routing path, defined by data held in packet switching nodes located along said routing path, may be directed in said infrastructure for a given network address, said method comprising: routing packets along a first routing path for a first network address, which routing path is directed to a first access node serving a mobile node using said first network address via a communications link; designating an interface, other than the communications link to the mobile node from the first access node, on which to forward packets arriving along said first routing path to a second access node; subsequent to the designation of said interface, handing over the communications link of the mobile node, such that the second access node serves said mobile node; responsive to the handing over of the communications link, altering routing in said infrastructure for said first network address to create a second routing path for said first network address, directed to said second access node; responsive to the creation of said second routing path, altering routing in said infrastructure for said first network address to remove said first routing path; and routing packets to said second access node via said second routing path.