MPLS Transport Profile (MPLS-TP) Security Framework
RFC 6941

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Internet Engineering Task Force (IETF)                      L. Fang, Ed.
Request for Comments: 6941                                         Cisco
Category: Informational                            B. Niven-Jenkins, Ed.
ISSN: 2070-1721                                                  Velocix
                                                       S. Mansfield, Ed.
                                                                Ericsson
                                                        R. Graveman, Ed.
                                                            RFG Security
                                                              April 2013

          MPLS Transport Profile (MPLS-TP) Security Framework

Abstract

   This document provides a security framework for the MPLS Transport
   Profile (MPLS-TP).  MPLS-TP extends MPLS technologies and introduces
   new Operations, Administration, and Maintenance (OAM) capabilities, a
   transport-oriented path protection mechanism, and strong emphasis on
   static provisioning supported by network management systems.  This
   document addresses the security aspects relevant in the context of
   MPLS-TP specifically.  It describes potential security threats as
   well as mitigation procedures related to MPLS-TP networks and to
   MPLS-TP interconnection to other MPLS and GMPLS networks.  This
   document is built on RFC 5920 ("Security Framework for MPLS and GMPLS
   Networks") by providing additional security considerations that are
   applicable to the MPLS-TP extensions.  All the security
   considerations from RFC 5920 are assumed to apply.

   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 functionality of
   a packet transport network.

Fang, et al.                  Informational                     [Page 1]
RFC 6941               MPLS-TP Security Framework             April 2013

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/rfc6941.

Copyright Notice

   Copyright (c) 2013 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.

Table of Contents

   1. Introduction ....................................................3
      1.1. Terminology ................................................3
   2. Security Reference Models .......................................4
      2.1. Security Reference Model 1 .................................5
      2.2. Security Reference Model 2 .................................6
   3. Security Threats ................................................9
   4. Defensive Techniques ...........................................10
   5. Security Considerations ........................................12
   6. Acknowledgements ...............................................13
   7. References .....................................................13
      7.1. Normative References ......................................13
      7.2. Informative References ....................................13
   Contributors ......................................................14

Fang, et al.                  Informational                     [Page 2]
RFC 6941               MPLS-TP Security Framework             April 2013

1.  Introduction

   This document provides a security framework for the MPLS Transport
   Profile (MPLS-TP).

   As defined in "Requirements of an MPLS Transport Profile" [RFC5654]
   and "A Framework for MPLS in Transport Networks" [RFC5921], MPLS-TP
   uses a subset of MPLS features and introduces extensions to reflect