Mobility

Routing in Content Addressable Networks: Algorithms and Performance

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Executive Summary

Virtual networking has evolved into a platform that is able to service new services and applications such as large-scale data sharing, multimedia services, and application-level multicast communication. With this evolution of networking, features such as robust routing, efficient search, scalability, decentralization, fault tolerance, trust and authentication become of relevance. Network virtualization refers to the process where, when one combines resources of different types; two distinct aspects stand out-virtualization of hardware on network entities, and a virtualized network. The overlay networks work as an enabler that are able to offer the addressing and routing substrates that are required to implement a virtualized network structure. This paper delves on the second aspect of network virtualization. To understand this complex subject, the paper looks at the specific case of structured overlay networks. A particular focus in this case is on Content Addressable Networks (CAN). The paper also looks into the existing approaches for structured P2P overlay networks. This way the paper is able to look at the pros and cons of P2P overlay networks objectively. As the internet becomes more sophisticated, it is able to provide better access to information. But it is also to understand the fundamental limitations of the current internet design if it has to be enhanced further and to avoid negative consequences that the internet can have on future networking applications and services.

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