Replication-based Routing
Replication-based protocols have recently obtained much attention in the scientific community, as they can allow for substantially better message delivery ratios than in forwarding-based protocols. These types of routing protocols allow for a message to be replicated; each of the replicas, as well as the original message itself, are generally referred to as message copies or message replicas. Possible issues with replication-based routing include:
- network congestion in clustered areas,
- being wasteful with network resources (including bandwidth, storage, and energy), and
- network scalability.
Since network resources may quickly become constrained, deciding which messages to transmit first and which messages to drop first play critical roles in many routing protocols.
Read more about this topic: Routing In Delay-tolerant Networking