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Applicability of the Path Computation Element (PCE) to Point-to-Multipoint (P2MP) MPLS and GMPLS Traffic Engineering (TE) (RFC5671)

IP.com Disclosure Number: IPCOM000188711D
Original Publication Date: 2009-Oct-01
Included in the Prior Art Database: 2009-Oct-20
Document File: 30 page(s) / 35K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

S. Yasukawa: AUTHOR [+3]

Abstract

The Path Computation Element (PCE) provides path computation functions in support of traffic engineering in Multiprotocol Label Switching (MPLS) and Generalized MPLS (GMPLS) networks.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 8% of the total text.

Network Working Group                                        S. Yasukawa Request for Comments: 5671                                           NTT Category: Informational                                   A. Farrel, Ed.                                                       Old Dog Consulting                                                             October 2009

          Applicability of the Path Computation Element (PCE) to    Point-to-Multipoint (P2MP) MPLS and GMPLS Traffic Engineering (TE)

Abstract

   The Path Computation Element (PCE) provides path computation    functions in support of traffic engineering in Multiprotocol Label    Switching (MPLS) and Generalized MPLS (GMPLS) networks.

   Extensions to the MPLS and GMPLS signaling and routing protocols have    been made in support of point-to-multipoint (P2MP) Traffic Engineered    (TE) Label Switched Paths (LSPs).

   This document examines the applicability of PCE to path computation    for P2MP TE LSPs in MPLS and GMPLS networks.  It describes the    motivation for using a PCE to compute these paths and examines which    of the PCE architectural models are appropriate.

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) 2009 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 BSD License.

 Yasukawa & Farrel            Informational                      [Page 1]
 RFC 5671             PCE for P2MP MPLS and GMPLS TE         October 2009

 Table of Contents

   1. Introduction ....................................................2

   2. Architectural Considerations ....................................4

      2.1. Offline Computation ........................................4

      2.2. Online Computation .........................................4

           2.2.1. LSR Loading .........................................5

       ...