A Comparison of Routing for Mobile Networks
Wireless mobile devices are becoming increasingly prevalent in society. As a result, aggregation of network connectivity through the use of mobile networks is becoming increasingly relevant to service providers as well as for mobile users. The current approach being pursued within the IETF Mobile EXTensions for IPv6 (MEXT) WG is based on the NEtwork MObility (NEMO) architecture. NEMO uses IP-in-IP tunneling for providing mobile network capability on an existing IPv6 network. This approach can result in non-optimal routing between source and destination nodes. Other proposals such as OptiNets extend NEMO and try to address issues such as sub-optimal routing.