Patent ID: 7633921
Filing Date: 2009-12-15
Classification: H04L,H04W

Abstract:
1. A method comprising: delivering a received data packet by a routing resource to a tunnel interface resource in response to the routing resource determining that the received data packet specifies a destination address starting with a prescribed aggregation prefix; computing, by the tunnel interface resource, a home address for a mobile router based on a second address prefix from a start of the destination address, the second address prefix contained within the prescribed aggregation prefix and having been assigned as reachable by the mobile router, the home address computed based on the tunnel interface resource applying at least a portion of the second address prefix to a prescribed mapping function; determining by the tunnel interface resource a care-of address for reaching the mobile router based on the corresponding home address having been calculated by the tunnel interface resource; and encapsulating, by the tunnel interface resource, the received data packet into an encapsulated packet having a destination address field specifying the care-of address, for output of the encapsulated packet toward the mobile router.