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Flash-forward CCN: flow-driven forwarding architecture for content centric networks

Content-centric Networking (CCN) promises significant advantages over the current Internet architecture by replacing its host-centric design with a content-centric one, and enabling in-network caching and name-based forwarding. However, despite its advantages, wire-speed forwarding in CCN remains a challenge, as CCN uses stateful forwarding and requires lookups on packets carrying hierarchically structured and variable-length content names. As a result, storage and computing requirements to support name-based forwarding in CCN determines the forwarding capacity.
 In this paper, to address the forwarding scalability concerns in CCN, we propose an overlay forwarding architecture that utilizes a flow-driven adaptive forwarding strategy and tradeoffs between flexibility and scalability. The proposed architecture exploits the correlations in user traffic to create active flow states in content routers to bypass the default CCN forwarding for future requests.