A Comparison of Name-Based Content Routing Protocols

Abstract

The first comparison of the performance of name-based content routing protocols based on distance vectors and link-states is presented. The protocols used for this comparison are the Named-data Link State Routing (NLSR) protocol, which is the main representative of name-based content routing based on link states, and the Distance-based Content Routing (DCR) protocol, which is the first name-based content routing protocol based on distance vectors. In the simulation of NLSR, the signaling of NLSR is simplified to minimize the overhead it incurs sending link state advertisements (LSAs), such that a single transmission is need to send an LSA, rather than multiple transmission as is the case with NLSR. The results of simulations show that the ideal version of NLSR requires fewer control messages to react to changes of name prefixes when the number of replicas is very small, and DCR incurs less signaling overhead to react to topology changes or changes in name prefixes when the number of replicas is large.