MPLS Transport Profile User-to-Network and Network-to-Network Interfaces
RFC 6215

Internet Engineering Task Force (IETF)                          M. Bocci
Request for Comments: 6215                                     L. Levrau
Updates: 5921                                             Alcatel-Lucent
Category: Informational                                         D. Frost
ISSN: 2070-1721                                                    Cisco
                                                              April 2011

                 MPLS Transport Profile User-to-Network
                   and Network-to-Network Interfaces

Abstract

   The framework for MPLS in transport networks (RFC 5921) provides
   reference models for the MPLS Transport Profile (MPLS-TP) Transport
   Service Interfaces, which are a User-to-Network Interface (UNI), and
   a Network-to-Network Interface (NNI).  This document updates those
   reference models to show detailed reference points for these
   interfaces, along with further clarification of the functional
   architecture of MPLS-TP at a UNI and NNI.

   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.

   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/rfc6215.

Bocci, et al.                 Informational                     [Page 1]
RFC 6215                   MPLS-TP UNI and NNI                April 2011

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   document authors.  All rights reserved.

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   described in the Simplified BSD License.

1.  Introduction

   The framework for MPLS in transport networks [RFC5921] provides
   reference models for the MPLS Transport Profile (MPLS-TP) Transport
   Service Interfaces, which are a User-to-Network Interface (UNI) and a
   Network-to-Network Interface (NNI).  This document updates those
   reference models to show detailed reference points for these
   interfaces, along with further clarification of the functional
   architecture of MPLS-TP at a UNI and NNI.

   This document is a product of a joint Internet Engineering Task Force
   (IETF) / International Telecommunication Union Telecommunication
   Standardizat