Visible to the public Analysis of Content Availability at Network Failure in Information-Centric Networking

TitleAnalysis of Content Availability at Network Failure in Information-Centric Networking
Publication TypeConference Paper
Year of Publication2020
AuthorsNakamura, R., Kamiyama, N.
Conference Name2020 16th International Conference on Network and Service Management (CNSM)
KeywordsAnalytical models, average content availability, cache storage, caching contents, cluster-based node removal, computer network reliability, content availability, contents server, host-centric networks, Information Centric Networks, information-centric net-working (ICN), information-centric networking, Internet, Mathematical model, Measurement, network failure, network robustness, Network topology, node removal, nodes reachability, pubcrawl, random node removal, Resiliency, Robustness, Routing protocols, Scalability, telecommunication network topology
AbstractIn recent years, ICN (Information-Centric Networking) has been under the spotlight as a network that mainly focuses on transmitted and received data rather than on the hosts that transmit and receive data. Generally, the communication networks such as ICNs are required to be robust against network failures caused by attacks and disasters. One of the metrics for the robustness of conventional host-centric networks, e.g., TCP/IP network, is reachability between nodes in the network after network failures, whereas the key metric for the robustness of ICNs is content availability. In this paper, we focus on an arbitrary ICN network and derive the content availability for a given probability of node removal. Especially, we analytically obtain the average content availability over an entire network in the case where just a single path from a node to a repository, i.e., contents server, storing contents is available and where multiple paths to the repository are available, respectively. Furthermore, through several numerical evaluations, we investigate the effect of the structure of network topology as well as the pattern and scale of the network failures on the content availability in ICN. Our findings include that, regardless of patterns of network failures, the content availability is significantly improved by caching contents at routers and using multiple paths, and that the content availability is more degraded at cluster-based node removal compared with random node removal.
Citation Keynakamura_analysis_2020