datatracker.ietf.org
Sign in
Version 5.7.4, 2014-11-12
Report a bug

Applicability of the Path Computation Element to Inter-Area and Inter-AS MPLS and GMPLS Traffic Engineering
draft-ietf-pce-inter-area-as-applicability-04

Document type: Active Internet-Draft (pce WG)
Document stream: IETF
Last updated: 2014-06-03
Intended RFC status: Unknown
Other versions: plain text, pdf, html

IETF State: WG Document
Document shepherd: No shepherd assigned

IESG State: I-D Exists
Responsible AD: (None)
Send notices to: No addresses provided

PCE Working Group                                                D. King
Internet Draft                                        Old Dog Consulting
Intended status: Informational                                 J. Meuric
Expires: December 3, 2014                                      O. Dugeon
                                                          France Telecom
                                                                 Q. Zhao
                                                     Huawei Technologies
                                                  Oscar Gonzalez de Dios
                                                          Telefonica I+D
                                                            June 3, 2014
                                          
     Applicability of the Path Computation Element to Inter-Area and   
           Inter-AS MPLS and GMPLS Traffic Engineering 

           draft-ietf-pce-inter-area-as-applicability-04

   Abstract 

   The Path Computation Element (PCE) may be used for computing services 
   that traverse multi-area and multi-AS Multiprotocol Label Switching   
   (MPLS) and Generalized MPLS (GMPLS) Traffic Engineered (TE) networks. 

   This document examines the applicability of the PCE architecture,   
   protocols, and protocol extensions for computing multi-area and  
   multi-AS paths in MPLS and GMPLS networks.

Status of this Memo 

   This Internet-Draft is submitted to IETF in full conformance with the 
   provisions of BCP 78 and BCP 79.  

   Internet-Drafts are working documents of the Internet Engineering 
   Task Force (IETF), its areas, and its working groups.  Note that 
   other groups may also distribute working documents as Internet-
   Drafts. 

   Internet-Drafts are draft documents valid for a maximum of six months 
   and may be updated, replaced, or obsoleted by other documents at any 
   time.  It is inappropriate to use Internet-Drafts as reference 
   material or to cite them other than as "work in progress." 

   The list of current Internet-Drafts can be accessed at 
   http://www.ietf.org/ietf/1id-abstracts.txt 

   The list of Internet-Draft Shadow Directories can be accessed at 
   http://www.ietf.org/shadow.html 

   This Internet-Draft will expire on December, 2014. 

King, et al.                                                  [Page 1]

draft-ietf-pce-inter-area-as-applicability-04.txt           June 2014

Copyright Notice 

   Copyright (c) 2014 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. Domains.................................................4
      1.2. Path Computation........................................4
        1.2.1 PCE-based Path Computation Procedure.................5
      1.3. Traffic Engineering Aggregation and Abstraction.........5
      1.4. Traffic Engineered Label Switched Paths.................6
      1.5. Inter-area and Inter-AS Connectivity Discovery..........6
      1.6. Objective Functions.....................................6
   2. Terminology..................................................7
   3. Issues and Considerations....................................7
      3.1 Multi-homing.............................................7
      3.2 Domain Confidentiality ..................................8
      3.3 Destination Location.....................................8
   4. Domain Topologies............................................8
      4.1 Selecting Domain Paths...................................9
      4.2 Multi-Homed Domains......................................9
      4.3 Domain Meshes............................................9
      4.4 Domain Diversity.........................................9
      4.5 Synchronized Path Computations...........................9
      4.6 Domain Inclusion or Exclusion............................10
   5. Applicability of the PCE to Inter-area Traffic Engineering...10
      5.1. Inter-area Routing......................................11
      5.1.1. Area Inclusion and Exclusion..........................11
      5.1.2. Strict Explicit Path and Loose Path...................11
      5.1.3. Inter-Area Diverse Path Computation...................12
      5.2. Control and Recording of Area Crossing..................12

[include full document text]