Signaling Entropy Label Capability and Entropy Readable Label Depth Using OSPF
draft-ietf-ospf-mpls-elc-15
Approval announcement
Draft of message to be sent after approval:
From: The IESG <iesg-secretary@ietf.org>
To: IETF-Announce <ietf-announce@ietf.org>
Cc: Acee Lindem <acee@cisco.com>, lsr-chairs@ietf.org, rfc-editor@rfc-editor.org, aretana.ietf@gmail.com, The IESG <iesg@ietf.org>, acee@cisco.com, lsr@ietf.org, draft-ietf-ospf-mpls-elc@ietf.org
Subject: Protocol Action: 'Signaling Entropy Label Capability and Entropy Readable Label Depth Using OSPF' to Proposed Standard (draft-ietf-ospf-mpls-elc-15.txt)
The IESG has approved the following document:
- 'Signaling Entropy Label Capability and Entropy Readable Label Depth
Using OSPF'
(draft-ietf-ospf-mpls-elc-15.txt) as Proposed Standard
This document is the product of the Link State Routing 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-ospf-mpls-elc/
Technical Summary
This document specifies extensions to OSPFv2/OSPFv3 Prefix
advertisement to indicate whether or not a prefix is Entropy
Label Capable (ELC), i.e., eligible for entropy label processing.
Additionally, a new MSD type is used to advertise the Entropy
Readable Label Depth (ERLD). The ELRD will be advertised using the
existing Maximum SID Depth (MSD) encodings defined in RFC 8476.
Finally, the mapping of these extensions to existing BGP-LS encodigs
is specified.
Working Group Summary
The draft went through multiple iterations due to a change in
requirements. Originally, the ELC was a node-level attribute. However,
a Service Provider (SP) use case relating to external prefix
advertisement required per-prefix advertisement. A second change was
required when the BGP-LS encodings specification was incorporated into
the draft. Since this incorporation obviated the BGP-LS draft, a sixth
author was added.
Document Quality
This document has been a WG document over 4 years. While it has gone
through several iterations, we are now confident that it is ready
for publication.
Personnel
Acee Lindem is the Document Shepherd.
Alvaro Retana is the Responsible Area Director.