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Mobile nodes in some challenging network scenarios suffer from intermittent connectivity and frequent partitions e.g., battlefield and disaster recovery scenarios. Disruption Tolerant Network (DTN) technologies are designed to enable nodes in such environments to communicate with one another. In the past, the authors have proposed two intra-domain multicast routing schemes, namely the Context-Aware Multicast Routing (CAMR) and Encounter-Based Multicast Routing (EBMR) schemes. In this paper, they consider the problem of routing multicast messages across different domains. They present a ferry based inter-domain multicast delivery scheme where a ferry is used to deliver multicast messages across groups that are partitioned and a variant of the encounter-based multicast routing scheme is used as the intra-domain routing scheme for intra-domain delivery.
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