Patent ID: 8614989
Filing Date: 2013-12-24
Classification: H04L,H04W

Abstract:
1. A method comprising: maintaining a first home agent address, of a first home agent of a first subnet, at a second home agent of a second subnet; receiving, at a wireless access point of the second subnet, predictive roaming information from the first subnet, wherein the predictive roaming information includes: a first address suitable to uniquely identify a first wireless client within a network comprising the first subnet and the second subnet, and a second address suitable to uniquely identify the first wireless client within the first subnet and to associate the first wireless client with the first subnet; receiving, at the wireless access point, identifying information from the first wireless client; matching, at the wireless access point, the first address in the predictive roaming information with the identifying information, wherein a match is indicative of the first wireless client having roamed to the second subnet; matching, at the wireless access point, the second address in the predictive roaming information with the identifying information, wherein a match is indicative of the first wireless client having roamed from the first subnet; when the first wireless client has roamed from the first subnet, obtaining at the wireless access point, from the second home agent, the first home agent address of the first home agent; establishing a tunnel between the wireless access point of the second subnet and the first home agent of the first subnet, using the first home agent address obtained, for carrying network traffic associated with the first wireless client.