Sfc Workgroup RFCs

Browse Sfc Workgroup RFCs by Number

RFC7498 - Problem Statement for Service Function Chaining
This document provides an overview of the issues associated with the deployment of service functions (such as firewalls, load balancers, etc.) in large-scale environments. The term "service function chaining" is used to describe the definition and instantiation of an ordered list of instances of such service functions, and the subsequent "steering" of traffic flows through those service functions.
The set of enabled service function chains reflects operator service offerings and is designed in conjunction with application delivery and service and network policy.
This document also identifies several key areas that the Service Function Chaining (SFC) working group will investigate to guide its architectural and protocol work and associated documents.
RFC7665 - Service Function Chaining (SFC) Architecture
This document describes an architecture for the specification, creation, and ongoing maintenance of Service Function Chains (SFCs) in a network. It includes architectural concepts, principles, and components used in the construction of composite services through deployment of SFCs, with a focus on those to be standardized in the IETF. This document does not propose solutions, protocols, or extensions to existing protocols.
RFC8300 - Network Service Header (NSH)
This document describes a Network Service Header (NSH) imposed on packets or frames to realize Service Function Paths (SFPs). The NSH also provides a mechanism for metadata exchange along the instantiated service paths. The NSH is the Service Function Chaining (SFC) encapsulation required to support the SFC architecture (defined in RFC 7665).
RFC8393 - Operating the Network Service Header (NSH) with Next Protocol "None"
This document describes a network that supports Service Function Chaining (SFC) using the Network Service Header (NSH) with no payload data and carrying only metadata. This is achieved by defining a new NSH "Next Protocol" type value of "None".
This document illustrates some of the functions that may be achieved or enhanced by this mechanism, but it does not provide an exhaustive list of use cases, nor is it intended to be definitive about the functions it describes. It is expected that other documents will describe specific use cases in more detail and will define the protocol mechanics for each use case.
RFC8459 - Hierarchical Service Function Chaining (hSFC)
Hierarchical Service Function Chaining (hSFC) is a network architecture allowing an organization to decompose a large-scale network into multiple domains of administration.
The goals of hSFC are to make a large-scale network easier to design, simpler to control, and supportive of independent functional groups within large network operators.
RFC8924 - Service Function Chaining (SFC) Operations, Administration, and Maintenance (OAM) Framework
This document provides a reference framework for Operations, Administration, and Maintenance (OAM) for Service Function Chaining (SFC).
RFC8979 - Subscriber and Performance Policy Identifier Context Headers in the Network Service Header (NSH)
This document defines the Subscriber and Performance Policy Identifier Context Headers. These Variable-Length Context Headers can be carried in the Network Service Header (NSH) and are used to inform Service Functions (SFs) of subscriber- and performance-related information for the sake of policy enforcement and appropriate Service Function Chaining (SFC) operations. The structure of each Context Header and their use and processing by NSH-aware nodes are described.
RFC9145 - Integrity Protection for the Network Service Header (NSH) and Encryption of Sensitive Context Headers
This specification presents an optional method to add integrity protection directly to the Network Service Header (NSH) used for Service Function Chaining (SFC). Also, this specification allows for the encryption of sensitive metadata (MD) that is carried in the NSH.
RFC9263 - Network Service Header (NSH) Metadata Type 2 Variable-Length Context Headers
Service Function Chaining (SFC) uses the Network Service Header (NSH) (RFC 8300) to steer and provide context metadata (MD) with each packet. Such metadata can be of various types, including MD Type 2, consisting of Variable-Length Context Headers. This document specifies several such Context Headers that can be used within a Service Function Path (SFP).
RFC9451 - Operations, Administration, and Maintenance (OAM) Packet and Behavior in the Network Service Header (NSH)
This document clarifies an ambiguity in the Network Service Header (NSH) specification related to the handling of O bit. In particular, this document clarifies the meaning of "OAM packet".
This document updates RFC 8300.
RFC9452 - Network Service Header (NSH) Encapsulation for In Situ OAM (IOAM) Data
In situ Operations, Administration, and Maintenance (IOAM) is used for recording and collecting operational and telemetry information while the packet traverses a path between two points in the network. This document outlines how IOAM-Data-Fields are encapsulated with the Network Service Header (NSH).
RFC9516 - Active Operations, Administration, and Maintenance (OAM) for Service Function Chaining (SFC)
A set of requirements for active Operations, Administration, and Maintenance (OAM) for Service Function Chaining (SFC) in a network is presented in this document. Based on these requirements, an encapsulation of active OAM messages in SFC and a mechanism to detect and localize defects are described.