Layer 1 VPN Enhanced Mode - Overlay Extension Service Model
draft-fedyk-ccamp-l1vpn-extnd-overlay-00

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Network Working Group                                          D. Fedyk 
Internet Draft                                                D. Beller 
Intended status: Standards Track                          Lieven Levrau
                                                         Alcatel-Lucent 
 
 
 
                                                          
Expires: January 2013                                      July 9, 2012 
                                    
 
                                       
        Layer 1 VPN Enhanced Mode - Overlay Extension Service Model 
                draft-fedyk-ccamp-l1vpn-extnd-overlay-00.txt 

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Internet-Draft   draft-fedyk-ccamp-l1vpn-extnd-overlay-00.txt July 2012 
    

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   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. 

Abstract 

    

   This document builds on the L1VPN framework [RFC4847] to extend the 
   L1VPN from the basic mode to the enhanced mode by including 
   additional constraints, focusing upon the overlay extension service 
   model. Route Diversity for customer LSPs are common requirement 
   applicable to L1VPNs. This document describes L1VPN compatible 
   mechanisms to achieve diversity for sets of customer LSPs. The 
   extended overlay service model can support other extensions for L1VPN 
   signaling, for example, those related to latency requirements. 

Table of Contents 

    
   1. Introduction...................................................3 
   2. Conventions used in this document..............................3 
   3. Contributors...................................................3 
   4. LSP Diversity in the Overlay Extension Service Model...........4 
      4.1. LSP diversity for dual-homed customer edge (CE) devices...5 
         4.1.1. Exchanging SRLG information between the PEs via the CE 
         device......................................................7 
            4.1.1.1. Operational Procedures..........................8 
            4.1.1.2. Error handling procedures.......................8 
         4.1.2. Using Path Affinity Set extension....................9 
            4.1.2.1. Operational Procedures.........................12 
            4.1.2.2. Error handling procedures......................13 
            4.1.2.3. Distribution of the Path Affinity Set information
            ........................................................13 
   5. Latency signaling.............................................14 
   6. Security Considerations.......................................14 
   7. IANA Considerations...........................................15 
   8. References....................................................15 
      8.1. Normative References.....................................15 
      8.2. Informative References...................................15 
   9. Acknowledgments...............................................16 
    

 
 
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Internet-Draft   draft-fedyk-ccamp-l1vpn-extnd-overlay-00.txt July 2012 
    

1. Introduction 

   This document builds on the L1VPN framework [RFC4847] to extend the 
   L1VPN from the basic mode to the enhanced mode by including 
   additional constraints, focusing upon the overlay extension service 
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