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Allocating and Retiring Special-Purpose MPLS Labels
RFC 7274

Revision differences

Document history

Date By Action
2018-12-20
(System)
Received changes through RFC Editor sync (changed abstract to 'Some MPLS labels have been allocated for specific purposes. A block of labels (0-15) has been …
Received changes through RFC Editor sync (changed abstract to 'Some MPLS labels have been allocated for specific purposes. A block of labels (0-15) has been set aside to this end; these labels are commonly called "reserved labels". They will be called "special-purpose labels" in this document.

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, forward progress should be allowed when one is called for.

This memo defines new procedures for the allocation and retirement of special-purpose labels, as well as a method to extend the special-purpose label space and a description of how to handle extended special-purpose labels in the data plane. Finally, this memo renames the IANA registry for special-purpose labels to "Special-Purpose MPLS Label Values" and creates a new registry called the "Extended Special-Purpose MPLS Label Values" registry.

This document updates a number of previous RFCs that use the term "reserved label". Specifically, this document updates RFCs 3032, 3038, 3209, 3811, 4182, 4928, 5331, 5586, 5921, 5960, 6391, 6478, and 6790.')
2015-10-14
(System) Notify list changed from mpls-chairs@ietf.org, draft-ietf-mpls-special-purpose-labels@ietf.org to (None)
2014-06-13
(System) IANA registries were updated to include RFC7274
2014-06-12
(System) RFC published