Applicability of LDP Label Advertisement Mode

The information below is for an old version of the document
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
Stream IETF
Intended RFC status Proposed Standard
Formats plain text pdf html bibtex
Stream WG state Submitted to IESG for Publication
Other - see Comment Log
Document shepherd Loa Andersson
Shepherd write-up Show (last changed 2013-07-10)
IESG IESG state AD Evaluation::Revised I-D Needed
Consensus Boilerplate Unknown
Telechat date
Responsible AD Adrian Farrel
Send notices to,
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 

   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.  

 Status of this Memo 

   This Internet-Draft is submitted 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-

   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 

Raza, et. al                 Expires August 2013               [Page 1] 

Internet-Draft  Applicability of LDP Label Advertisement Mode Feb 2013 
   The list of Internet-Draft Shadow Directories can be accessed at 

   This Internet-Draft will expire on August 14, 2013. 

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 
   ( 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 
  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 


Raza, et. al                 Expires August 2013               [Page 2] 

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

   The MPLS architecture [RFC3031] defines two modes of label 
Show full document text