MPLS Upstream Label Assignment for LDP
RFC 6389
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RFC - Proposed Standard
(November 2011; No errata)
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Last updated |
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2015-10-14
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Replaces |
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draft-raggarwa-mpls-ldp-upstream
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IETF
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plain text
pdf
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bibtex
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WG state
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WG Document
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Document shepherd |
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No shepherd assigned
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IESG state |
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RFC 6389 (Proposed Standard)
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Consensus Boilerplate |
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Unknown
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Telechat date |
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Responsible AD |
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Adrian Farrel
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IESG note |
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Loa Andersson (loa@pi.nu) is the Document Shepherd.
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Send notices to |
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(None)
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Internet Engineering Task Force (IETF) R. Aggarwal
Request for Comments: 6389 Juniper Networks
Category: Standards Track JL. Le Roux
ISSN: 2070-1721 Orange
November 2011
MPLS Upstream Label Assignment for LDP
Abstract
This document describes procedures for distributing upstream-assigned
labels for the Label Distribution Protocol (LDP). It also describes
how these procedures can be used for avoiding branch Label Switching
Router (LSR) traffic replication on a LAN for LDP point-to-multipoint
(P2MP) Label Switched Paths (LSPs).
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force
(IETF). It represents the consensus of the IETF community. It has
received public review and has been approved for publication by the
Internet Engineering Steering Group (IESG). Further information on
Internet Standards is available in Section 2 of RFC 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc6389.
Copyright Notice
Copyright (c) 2011 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Aggarwal & Le Roux Standards Track [Page 1]
RFC 6389 MPLS Upstream Label Assignment for LDP November 2011
This document may contain material from IETF Documents or IETF
Contributions published or made publicly available before November
10, 2008. The person(s) controlling the copyright in some of this
material may not have granted the IETF Trust the right to allow
modifications of such material outside the IETF Standards Process.
Without obtaining an adequate license from the person(s) controlling
the copyright in such materials, this document may not be modified
outside the IETF Standards Process, and derivative works of it may
not be created outside the IETF Standards Process, except to format
it for publication as an RFC or to translate it into languages other
than English.
Table of Contents
1. Introduction ....................................................3
2. Specification of Requirements ...................................3
3. LDP Upstream Label Assignment Capability ........................3
4. Distributing Upstream-Assigned Labels in LDP ....................4
4.1. Procedures .................................................4
5. LDP Tunnel Identifier Exchange ..................................5
6. LDP Point-to-Multipoint LSPs on a LAN ...........................9
7. IANA Considerations ............................................11
7.1. LDP TLVs ..................................................11
7.2. Interface Type Identifiers ................................11
8. Security Considerations ........................................12
9. Acknowledgements ...............................................12
10. References ....................................................12
10.1. Normative References .....................................12
10.2. Informative References ...................................13
Aggarwal & Le Roux Standards Track [Page 2]
RFC 6389 MPLS Upstream Label Assignment for LDP November 2011
1. Introduction
This document describes procedures for distributing upstream-assigned
labels [RFC5331] for Label Distribution Protocol (LDP) [RFC5036].
These procedures follow the architecture for MPLS upstream label
assignment described in [RFC5331].
This document describes extensions to LDP that a Label Switching
Router (LSR) can use to advertise whether the LSR supports upstream
label assignment to its neighboring LSRs.
This document also describes extensions to LDP to distribute
upstream-assigned labels.
The usage of MPLS upstream label assignment using LDP to avoid branch
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