Date Added: Jan 2012
Mobile ad hoc networks are generally considered as stand-alone networks. However, in most practical cases of ad-hoc networking, connectivity to the wider Internet may be possible via some members of the ad-hoc network. If that connectivity is made available to other members of the ad-hoc network, an interesting case of ad-hoc network interconnected with Internet via multiple gateways emerges. Such scenario gives raise to a number of challenges that require solutions involving extensions to Mobile IP and ad-hoc routing procedures, as well as careful planning of the scenarios under which the use of Internet connectivity will be made. The paper discusses the issues of Mobile IP agent registration, routing, and smooth gateway handoff.