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Gateway Aggregation Protocol (GAP) for Mobile Ad Hoc Networks: Overview and Mechanism

The document outlines the Gateway Aggregation Protocol (GAP) developed for Mobile Ad Hoc Networks (MANETs) to enhance communication efficiency. The protocol addresses issues related to the selection of Internet Gateways (IGWs) to minimize changes in global addresses and reduce routing re-construction times. GAP utilizes a tunneling mechanism via IP-IP encapsulation, facilitating smooth communication between connected nodes and IGWs. This includes a structured process for address configuration, ensuring stability and responsiveness in dynamic network environments.

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Gateway Aggregation Protocol (GAP) for Mobile Ad Hoc Networks: Overview and Mechanism

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  1. IETF-66Autoconf WG Gateway Aggregation Protocol (GAP) for Mobile Ad Hoc Networksdraft-mase-autoconf-gap-00, May 2006 Kenichi Mase, Niigata University Yasunori Owada, Niigata University July 12, 2006

  2. Problem statement • A node may select a different IGW for communication efficiency. →　Configure a new global address using a new prefix. • Aim of GAP: • Suppress change in the global address. • Eliminate route re-construction time.

  3. GAP Mechanism A Tunnel through the Internet（IP-IP Capsulation） α AR → IGW IGW-ADV AR Prefix: α α IGW-ADV MN MN α α α MN Distant Vector/MANET routing protocol may run on ARs and IGW.

  4. Attached MN AR MN IGW IGW A procedure of address configuration in GAP Configure a global address IGW_REG Configure a NANET local address IGW_REG_ACK MN_REG MN_REG_ACK IGW_ADV IGW_ADV AR_REG AR_REG_ACK IGW_ADV Configure a global address

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