A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Source Packet Routing in Networking WG of the
IETF.
Title : Integration of Network Service Header (NSH) and
Segment Routing for Service Function Chaining (SFC)
Authors : James N Guichard
Jeff Tantsura
Filename : draft-ietf-spring-nsh-sr-06.txt
Pages : 17
Date : 2021-06-08
Abstract:
This document describes the integration of Network Service Header
(NSH) and Segment Routing (SR), as well as encapsulation details, to
support Service Function Chaining (SFC) in an efficient manner while
maintaining separation of the service and transport planes as
originally intended by the SFC architecture.
Combining these technologies allows SR to be used for steering
packets between Service Function Forwarders (SFF) along a given
Service Function Path (SFP) while NSH has the responsibility for
maintaining the integrity of the service plane, the SFC instance
context, and any associated metadata.
The integration described in this document demonstrates that NSH and
SR can work jointly and complement each other leaving the network
operator with the flexibility to use whichever transport technology
makes sense in specific areas of their network infrastructure, and
still maintain an end-to-end service plane using NSH.
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-spring-nsh-sr/
There is also an htmlized version available at:
https://datatracker.ietf.org/doc/html/draft-ietf-spring-nsh-sr-06
A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-spring-nsh-sr-06
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
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