Investigating the Synergy between Routing and Forwarding Strategy in NDN Networks

Although multiple routing protocols and forwarding strategies have been proposed for NDN, there is a lack of understanding about the synergy between them. In this work, we investigate the effectiveness of NDN forwarding strategy, routing, and the combination of the two in maximizing data fetching success in the face of network failures. Through emulation experiments, we first evaluate the ASF (Adaptive SRTT-based Forwarding) strategy and NLSR (Named-data Link State Routing) protocol separately. Our results show that ASF with static routing outperforms NLSR with best-route strategy in most cases, although its data delivery performance exhibits a bias toward popular producers. We then conduct experiments that combine ASF and NLSR. The results show that the combination of ASF with frequent probing and NLSR with slow routing adaptation leads to better data delivery performance than using either ASF or NLSR alone. Our results provide insights into the future design and deployment of routing and forwarding strategies in NDN networks.