NVO3 Data Plane Requirements
draft-bl-nvo3-dataplane-requirements-01

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Last updated 2012-06-26
Replaces draft-bitar-lasserre-nvo3-dp-reqs
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Internet Engineering Task Force                             Nabil Bitar 
     Internet Draft                                                  Verizon 
     Intended status: Informational                                          
     Expires: December 2012                                    Marc Lasserre  
                                                                Florin Balus  
                                                              Alcatel-Lucent 
                                                                             
                                                                Thomas Morin 
                                                       France Telecom Orange 
                                                                             
                                                                             
                                                               June 26, 2012 
         
         

                            NVO3 Data Plane Requirements 
                     draft-bl-nvo3-dataplane-requirements-01.txt 

                                           

     Status of this Memo 

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        Copyright (c) 2012 IETF Trust and the persons identified as the 
        document authors. All rights reserved. 

      
      
     Lasserre, et al.      Expires December 26, 2012                [Page 1] 
      

     Internet-Draft          NVO3 Data Plane Requirements         June 2012 
      

        This document is subject to BCP 78 and the IETF Trust's Legal 
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     Abstract 

        Several IETF drafts relate to the use of overlay networks to support 
        large scale virtual data centers. This draft provides a list of data 
        plane requirements for Network Virtualization over L3 (NVO3) that 
        have to be addressed in solutions documents. 

         

     Table of Contents 

        1. Introduction...................................................3 
           1.1. Conventions used in this document.........................3 
           1.2. General terminology.......................................3 
        2. Data Path Overview.............................................4 
        3. Data Plane Requirements........................................5 
           3.1. Virtual Access Points (VAPs)..............................5 
           3.2. Virtual Network Instance (VNI)............................5 
           3.2.1. L2 VNI..................................................6 
           3.2.2. L3 VNI..................................................6 
           3.3. Overlay Module............................................7 
           3.3.1. NVO3 overlay header.....................................7 
           3.3.1.1. Virtual Network Context Identification................7 
           3.3.1.2. Service QoS identifier................................8 
           3.3.2. NVE Tunneling function..................................9 
           3.3.2.1. LAG and ECMP..........................................9 
           3.3.2.2. DiffServ and ECN marking.............................10 
           3.3.2.3. Handling of BUM traffic..............................10 
           3.4. External NVO3 connectivity...............................11 
           3.4.1. GW Types...............................................11 
           3.4.1.1. VPN and Internet GWs.................................11 
           3.4.1.2. Inter-DC GW..........................................11 
           3.4.1.3. Intra-DC gateways....................................12 
           3.4.2. Path optimality between NVEs and Gateways..............12 
           3.4.2.1. Triangular Routing Issues,a.k.a.: Traffic Tromboning.13 
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