Techniques for efficient network layer failover in maritime tactical wide area networks (MTWAN)

ACP 200 outlines the maritime tactical wide area network (MTWAN) for use in multi-national naval task groups (MNTG). The publication describes the MTWAN as an affordable IP network developed to promote the effective end efficient sharing of information. OSPF is mandated for intra-AS routing and BGP4 is mandated for inter-AS routing within the MTWAN. For Australian and US forces the principle equipment used for network layer MTWAN connectivity is a Cisco router. This paper discusses techniques available to network practitioners for improving OSPF network layer handover between the primary line-of-sight (LOS) communication link and the secondary beyond line-of-sight (BLOS) bearer