Problem Statement for Service Function Chaining (RFC7498)
Original Publication Date: 2015-Apr-01
Included in the Prior Art Database: 2015-Apr-14
Internet Society Requests For Comment (RFCs)
P. Quinn: AUTHOR [+4]
The delivery of end-to-end services often requires various service functions including traditional network service functions (for example, firewalls and server load balancers), as well as application-specific features such as HTTP header manipulation. Service functions may be delivered within the context of an isolated user (e.g., a tenant) or shared amongst many users or user groups.
Internet Engineering Task Force (IETF) P. Quinn, Ed. Request for Comments: 7498 Cisco Systems, Inc. Category: Informational T. Nadeau, Ed. ISSN: 2070-1721 Brocade April 2015
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.
Status of This Memo
This document is not an Internet Standards Track specification; it is published for informational purposes.
This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Not all documents approved by the IESG are a candidate for any level of Internet Standard; see Section 2 of RFC 5741.
Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc7498.
Nadeau Informational [Page 1]
RFC 7498 SFC Problem Statement April 2015
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