Network Service Chaining

Network services are widely deployed and essential in many networks. The services provide a range of functions such as security, WAN acceleration, and server load balancing. Service functions that form part of the overall service may be physically located at different points in the network infrastructure such as the wide area network, data center, campus, and so forth.

New data center network and Internet cloud architectures require more flexible network service deployment models. Additionally, the transition to virtual platforms requires an agile service insertion model that supports elastic service delivery, the movement of service functions and application workloads in the network and the ability to easily bind service policy to granular information such as per-subscriber state.

Service chaining is a broad term used to describe a common model for delivering multiple services in a specific order. Service chaining de-couples service delivery from the underlying network topology and creates a dynamic services plane that addresses the requirements of cloud and virtual application delivery. Traffic that requires service chaining is classified, and context is shared between the network and the services.

This list is for discussion of aspects of Network Service Chaining (NSC) that impact upon the IETF's work, the applicability of IETF protocols to NSC, as well as new protocols and changes to IETF protocols that might be required.

A BoF has been proposed for NSC in Berlin. This list also serves to discuss that BoF proposal.

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