Protocol Action: 'RFC8287 Sub-TLV Length Clarification' to Proposed Standard (draft-ietf-mpls-rfc8287-len-clarification-04.txt)
The IESG <iesg-secretary@ietf.org> Fri, 30 August 2019 18:10 UTC
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From: The IESG <iesg-secretary@ietf.org>
To: IETF-Announce <ietf-announce@ietf.org>
Subject: Protocol Action: 'RFC8287 Sub-TLV Length Clarification' to Proposed Standard (draft-ietf-mpls-rfc8287-len-clarification-04.txt)
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Cc: mpls@ietf.org, db3546@att.com, The IESG <iesg@ietf.org>, draft-ietf-mpls-rfc8287-len-clarification@ietf.org, mpls-chairs@ietf.org, Loa Andersson <loa@pi.nu>, rfc-editor@rfc-editor.org, loa@pi.nu
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Date: Fri, 30 Aug 2019 11:10:38 -0700
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The IESG has approved the following document: - 'RFC8287 Sub-TLV Length Clarification' (draft-ietf-mpls-rfc8287-len-clarification-04.txt) as Proposed Standard This document is the product of the Multiprotocol Label Switching Working Group. The IESG contact persons are Alvaro Retana, Martin Vigoureux and Deborah Brungard. A URL of this Internet Draft is: https://datatracker.ietf.org/doc/draft-ietf-mpls-rfc8287-len-clarification/ Technical Summary RFC8287 defines the extensions to MPLS LSP Ping and Traceroute for Segment Routing IGP-Prefix and IGP-Adjacency Segment Identifier (SIDs) with an MPLS data plane. RFC 8287 proposes 3 Target FEC Stack Sub-TLVs. While the standard defines the format and procedure to handle those Sub-TLVs, it does not sufficiently clarify how the length of the Segment ID Sub-TLVs should be computed to include in the Length field of the Sub-TLVs which may result in interoperability issues. Working Group Summary There were no controversies progressing this document, the support in the working group is solid. Document Quality In this case the question of existing implementations is a bit tricky, the document is a clarification to RFC 8287, of which there are implementations. The problem with the Segment ID Sub-TLV was discovered when preparing inter-op test of RFC 8287. Personnel Who is the Document Shepherd for this document? Loa Andersson Who is the Responsible Area Director? Deborah Brungard