Allocating and Retiring Special Purpose MPLS Labels

Document Type Replaced Internet-Draft (mpls WG)
Authors Kireeti Kompella  , Adrian Farrel 
Last updated 2013-07-09 (latest revision 2013-05-27)
Replaces draft-kompella-mpls-reserved-labels
Replaced by RFC 7274
Stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Expired & archived
pdf htmlized bibtex
Stream WG state Adopted by a WG
Document shepherd Ross Callon
IESG IESG state Replaced by draft-ietf-mpls-special-purpose-labels
Consensus Boilerplate Unknown
Telechat date
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


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". They will be called "special purpose labels" in this document. As there are only 16 of these 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 memo defines some 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.


Kireeti Kompella (
Adrian Farrel (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)