Endpoint Discovery and Contact Graph Routing in space and terrestrial DTNs

Contact Graph Routing is a routing scheme for Delay-and Disruption-Tolerant Networks (DTNs) that is designed particularly for use in highly deterministic space networks. The Endpoint Discovery Protocol is designed for use in terrestrial DTNs where opportunistic contacts are common. We outline two scenarios where use of both of these protocols could be desirable and analyse the current versions to see where they are compatible and where incompatible. DTNs will benefit from this kind of analysis in general, since it is desirable that DTN deployments be able to mix-and-match routing and other schemes within boundaries that make sense for the DTN in question.