Shepherd writeup

Note: This shepherd writeup follows the Essay Style Document Writeup Template (

1. Summary

The document shepherd is Tal Mizrahi, and the responsible area director is Martin Vigoureux.

This document describes a framework for Operations, Administration and Maintenance (OAM) in the context of Service Function Chains (SFC).

The intended status of this document is informational, as it defines a framework for OAM in the context of SFC, but does not define new protocols or tools.

2. Review and Consensus

The draft was first submitted in July 2014, and gained wide support for working group adoption. It was adopted in August 2015. The work on this document was somewhat hibernated for a couple of years, and gained momentum again in 2019 during working group last call. Several working group members reviewed the draft and expressed their support in WG last call. Several comments were discussed thoroughly on the mailing list, followed by the WG chairs' decision that consensus has been reached ( The discussion included some terminology issues (including terms such as availability and liveness), followed by a few iterations in which the document was tuned to address the issues. Other comments were raised regarding the scope of the document; whether it is applicable only to NSH or more generally to SFC, and whether the gap analysis is sufficient. Although one reviewer was not satisfied with the result (, the authors worked iteratively to resolve the vast majority of the issues.

The current version of the draft seems to have resolved the important issues, and has the rough consensus of the working group.

3. Intellectual Property

Two IPR disclosures have been reported for this document. The two disclosures are available in the Datatracker (
- 3440	Huawei Technologies Co.,Ltd's Statement about IPR related to draft-ietf-sfc-oam-framework
- 3121	Orange's Statement about IPR related to draft-ietf-sfc-oam-framework

An IPR poll was performed after working group last call and all the authors confirmed that they are not aware of any further IPRs.

4. Other Points

The draft does not include any requests from IANA.