Internet Engineering Task Force (IETF) L. Andersson, Ed.
Request for Comments: 6373 Ericsson
Category: Informational L. Berger, Ed.
ISSN: 2070-1721 LabN
L. Fang, Ed.
Cisco
N. Bitar, Ed.
Verizon
E. Gray, Ed.
Ericsson
September 2011
MPLS Transport Profile (MPLS-TP) Control Plane Framework
Abstract
The MPLS Transport Profile (MPLS-TP) supports static provisioning of
transport paths via a Network Management System (NMS) and dynamic
provisioning of transport paths via a control plane. This document
provides the framework for MPLS-TP dynamic provisioning and covers
control-plane addressing, routing, path computation, signaling,
traffic engineering, and path recovery. MPLS-TP uses GMPLS as the
control plane for MPLS-TP Label Switched Paths (LSPs). MPLS-TP also
uses the pseudowire (PW) control plane for pseudowires. Management-
plane functions are out of scope of this document.
This document is a product of a joint Internet Engineering Task Force
(IETF) / International Telecommunication Union Telecommunication
Standardization Sector (ITU-T) effort to include an MPLS Transport
Profile within the IETF MPLS and Pseudowire Emulation Edge-to-Edge
(PWE3) architectures to support the capabilities and functionalities
of a packet transport network as defined by the ITU-T.
Status of This Memo
This document is not an Internet Standards Track specification; it is
published for informational purposes.
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). Not all documents
approved by the IESG are a candidate for any level of Internet
Standard; see Section 2 of RFC 5741.
Andersson, et al. Informational [Page 1]RFC 6373 MPLS-TP Control Plane Framework September 2011
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/rfc6373.
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
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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.
Table of Contents
1. Introduction ....................................................3
1.1. Scope ......................................................4
1.2. Basic Approach .............................................4
1.3. Reference Model ............................................6
2. Control-Plane Requirements ......................................9
2.1. Primary Requirements .......................................9
2.2. Requirements Derived from the MPLS-TP Framework ...........18
2.3. Requirements Derived from the OAM Framework ...............20
2.4. Security Requirements .....................................25
2.5. Identifier Requirements ...................................25
3. Relationship of PWs and TE LSPs ................................26
4. TE LSPs ........................................................27
4.1. GMPLS Functions and MPLS-TP LSPs ..........................27
4.1.1. In-Band and Out-of-Band Control ....................27
4.1.2. Addressing .........................................29
4.1.3. Routing ............................................29
4.1.4. TE LSPs and Constraint-Based Path Computation ......29
4.1.5. Signaling ..........................................30
4.1.6. Unnumbered Links ...................................30
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