Applicability of LDP Label Advertisement Mode
draft-ietf-mpls-ldp-applicability-label-adv-01

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Document Type Active Internet-Draft (mpls WG)
Last updated 2013-09-04 (latest revision 2013-02-14)
Replaces draft-raza-mpls-ldp-applicability-label-adv
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MPLS Working Group                                          Kamran Raza 
Internet Draft                                             Sami Boutros 
Updates: 5036, 4447 (if approved)                          Luca Martini 
Intended status: Standards Track                    Cisco Systems, Inc.
Expires: August 14, 2013                                            
                                                        Nicolai Leymann 
                                                       Deutsche Telekom 
                                                            
                                                      February 15, 2013 

                                      
               Applicability of LDP Label Advertisement Mode 
                                      
            draft-ietf-mpls-ldp-applicability-label-adv-01.txt 
                                      
Abstract 

   An LDP speaker negotiates the label advertisement mode with its LDP 
   peer at the time of session establishment. Although different 
   applications sharing the same LDP session may need different modes 
   of label distribution and advertisement, there is only one type of 
   label advertisement mode that is negotiated and used per LDP 
   session. This document clarifies the use and the applicability of 
   session's negotiated label advertisement mode, and categorizes LDP 
   applications into two broad categories of negotiated mode-bound and 
   mode-independent applications. The document updates RFC5036 and 
   RFC4447 to remove any ambiguity and conflict in the area of using 
   correct label advertisement mode for a given application.  

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Internet-Draft  Applicability of LDP Label Advertisement Mode Feb 2013 
      
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Table of Contents 

  1. Introduction                                                    3 
  2. Conventions used in this document                               3 
  3. Label Advertisement Mode Applicability                          4 
     3.1. Label Advertisement Mode Negotiation                       4 
     3.2. Mode-based Categorization of LDP Applications              4 
          3.2.1. Session mode-bound Applications                     5 
          3.2.2. Session mode-independent Applications               5 
     3.3. Unacceptable label advertisement mode                      6 
  4. Clarification on Mode Applicability                             6 
     4.1. Update to RFC-5036                                         7 
     4.2. Update to RFC-4447                                         7 
  5. Security Considerations                                         7 
  6. IANA Considerations                                             7 
  7. References                                                      7 
     7.1. Normative References                                       7 
     7.2. Informative References                                     8 
  8. Acknowledgments                                                 8 
    

    

    
 
 
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Internet-Draft  Applicability of LDP Label Advertisement Mode Feb 2013 
 
1. Introduction 

   The MPLS architecture [RFC3031] defines two modes of label 
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