Distributed Function Chaining with Anycast Routing

Abstract : Current networks more and more rely on virtualized middle-boxes to flexibly provide security, protocol optimization, and policy compliance functionalities. As such, delivering these services requires that the traffic be steered through the desired sequence of virtual appliances. Current solutions introduce a new logically centralized entity, often called orchestrator, needing to build its own holistic view of the whole network so to decide where to direct the traffic. We advocate that such a centralized orchestration is not necessary and that, on the contrary, the same objectives can be achieved by augmenting the network layer routing so to include the notion of service and its chaining. In this paper, we support our claim by designing such a system called NFV Router. We also present an implementation and an early evaluation, showing that we can easily steer traffic through available resources. The proposed approach offers as well valuable features such as incremental deploya-bility, multi-domain service chaining, failure resiliency, and easy maintenance.
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Adrien Wion, Mathieu Bouet, Luigi Iannone, Vania Conan. Distributed Function Chaining with Anycast Routing. Symposium on SDN research, Apr 2019, San Jose, United States. ⟨10.1145/3314148.3314355⟩. ⟨hal-02163976⟩

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