A system for providing redundant home agents comprises a plurality of home agents, the home agents create mobility binding registrations with outside PDSNs. The system also includes a redundant home agent, the redundant home agent is coupled to said plurality of home agents. A home agent control node...http://www.google.fr/patents/US6795705?utm_source=gb-gplus-shareBrevet US6795705 - Hot standby protocol for wireless devices