Operations and Management (OAM) Requirements for Point-to-Multipoint MPLS Networks
RFC 4687

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Network Working Group                                        S. Yasukawa
Request for Comments: 4687                               NTT Corporation
Category: Informational                                        A. Farrel
                                                      Old Dog Consulting
                                                                 D. King
                                                      Aria Networks Ltd.
                                                               T. Nadeau
                                                     Cisco Systems, Inc.
                                                          September 2006

             Operations and Management (OAM) Requirements
                 for Point-to-Multipoint MPLS Networks

Status of This Memo

   This memo provides information for the Internet community.  It does
   not specify an Internet standard of any kind.  Distribution of this
   memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2006).

Abstract

   Multi-Protocol Label Switching (MPLS) has been extended to encompass
   point-to-multipoint (P2MP) Label Switched Paths (LSPs).  As with
   point-to-point MPLS LSPs, the requirement to detect, handle, and
   diagnose control and data plane defects is critical.

   For operators deploying services based on P2MP MPLS LSPs, the
   detection and specification of how to handle those defects are
   important because such defects not only may affect the fundamentals
   of an MPLS network, but also may impact service level specification
   commitments for customers of their network.

   This document describes requirements for data plane operations and
   management for P2MP MPLS LSPs.  These requirements apply to all forms
   of P2MP MPLS LSPs, and include P2MP Traffic Engineered (TE) LSPs and
   multicast LSPs.

Yasukawa, et al.             Informational                      [Page 1]
RFC 4687         OAM Reqs for Point-to-Multipoint MPLS    September 2006

Table of Contents

   1. Introduction ....................................................3
   2. Terminology .....................................................3
      2.1. Conventions Used in This Document ..........................3
      2.2. Terminology ................................................3
      2.3. Acronyms ...................................................3
   3. Motivations .....................................................4
   4. General Requirements ............................................4
      4.1. Detection of Label Switch Path Defects .....................5
      4.2. Diagnosis of a Broken Label Switch Path ....................6
      4.3. Path Characterization ......................................6
      4.4. Service Level Agreement Measurement ........................7
      4.5. Frequency of OAM Execution .................................8
      4.6. Alarm Suppression, Aggregation, and Layer Coordination .....8
      4.7. Support for OAM Interworking for Fault Notification ........8
      4.8. Error Detection and Recovery ...............................9
      4.9. Standard Management Interfaces .............................9
      4.10. Detection of Denial of Service Attacks ...................10
      4.11. Per-LSP Accounting Requirements ..........................10
   5. Security Considerations ........................................10
   6. References .....................................................11
      6.1. Normative References ......................................11
      6.2. Informative References ....................................11
   7. Acknowledgements ...............................................12

Yasukawa, et al.             Informational                      [Page 2]
RFC 4687         OAM Reqs for Point-to-Multipoint MPLS    September 2006

1.  Introduction

   This document describes requirements for data plane operations and
   management (OAM) for point-to-multipoint (P2MP) Multi-Protocol Label
   Switching (MPLS).  This document specifies OAM requirements for P2MP
   MPLS, as well as for applications of P2MP MPLS.

   These requirements apply to all forms of P2MP MPLS LSPs, and include
   P2MP Traffic Engineered (TE) LSPs [RFC4461] and [P2MP-RSVP], as well
   as multicast LDP LSPs [MCAST-LDP].

   Note that the requirements for OAM for P2MP MPLS build heavily on the
   requirements for OAM for point-to-point MPLS.  These latter
   requirements are described in [RFC4377] and are not repeated in this
   document.

   For a generic framework for OAM in MPLS networks, refer to [RFC4378].

2.  Terminology

2.1.  Conventions Used in This Document

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [RFC2119].

   The requirements in this document apply to OAM mechanism and protocol