Allocating and Retiring Special-Purpose MPLS Labels
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From: The IESG <email@example.com> To: IETF-Announce <firstname.lastname@example.org> Cc: RFC Editor <email@example.com>, mpls mailing list <firstname.lastname@example.org>, mpls chair <email@example.com> Subject: Protocol Action: 'Allocating and Retiring Special Purpose MPLS Labels' to Proposed Standard (draft-ietf-mpls-special-purpose-labels-06.txt) The IESG has approved the following document: - 'Allocating and Retiring Special Purpose MPLS Labels' (draft-ietf-mpls-special-purpose-labels-06.txt) as Proposed Standard This document is the product of the Multiprotocol Label Switching Working Group. The IESG contact persons are Alia Atlas and Adrian Farrel. A URL of this Internet Draft is: http://datatracker.ietf.org/doc/draft-ietf-mpls-special-purpose-labels/
Technical Summary Some MPLS labels have been allocated for specific purposes. A block of labels (0-15) has been set aside to this end, and are commonly called "reserved labels". As there are only 16 of these special purpose labels, caution is needed in the allocation of new special purpose labels, yet at the same time allow forward progress when one is called for. This document defines new procedures to follow in the allocation and retirement of special purpose labels, as well as a method to extend the special purpose label space. Finally, this memo renames the IANA registry for these labels to "Special Purpose MPLS Label Values", and creates a new one called the "Extended Special Purpose MPLS Label Values" registry. Working Group Summary no controversy. Some contructive discussion of the details. Document Quality The document has been well reviewed, and has been updated to reflect comments received in WG last call. Due to the nature of this document it needs to be published in final form (as an RFC) prior to implementation but authors and reviewers include multiple vendors who would need to implement the extension to the special purpose label space. Personnel Ross Callon is the document shepherd. The AD for MPLS (Adrian Farrel) is co-author, and so the other routing AD (Alia Atlas) will act as responsible AD. RFC Editor Note Please update the Abstract as follows: OLD This memo defines new procedures to follow in the allocation and retirement of special purpose labels, as well as a method to extend the special purpose label space. NEW This memo defines new procedures to follow in the allocation and retirement of special purpose labels, as well as a method to extend the special purpose label space and a decription of how to handle extended special purpose labels in the data plane.