BGP Extensions for Enhanced VPN Auto Discovery
draft-zhuang-bess-enhanced-vpn-auto-discovery-02

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Last updated 2018-11-06
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INTERNET-DRAFT                                            Shunwan Zhuang
Intended status: Proposed Standard                            Zhenbin Li
                                                         Donald Eastlake
                                                                  Huawei
                                                               Lucy Yong
                                                             Independent
Expires: May 5, 2018                                    November 6, 2018

             BGP Extensions for Enhanced VPN Auto Discovery
          draft-zhuang-bess-enhanced-vpn-auto-discovery-02.txt

Abstract

   A variety of VPN technologies have been widely deployed to bear
   different services.  As new applications develop, a requirement has
   been proposed for auto-discovery of Layer 3 Virtual Private Networks
   (L3VPN) and enhanced auto-discovery requirements for other VPN
   technologies that already have basic auto-discovery mechanisms.

   This document identifies some possible applications of these auto-
   discovery requirements and defines a new BGP NLRI, called the BGP-
   VPN-INSTANCE NLRI, to satisfy the requirement for auto-discovery of
   BGP VPN instances. It also defines a new type of extended community,
   called the Import Route Target, which can be applied to auto-
   discovery mechanisms of multiple VPN technologies.

Status of this Memo

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

   Distribution of this document is unlimited. Comments should be sent
   to the authors or the BESS working group mailing list: bess@ietf.org.

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Zhuang, et al                                                   [Page 1]
INTERNET-DRAFT                                 BGP Extensions For VPN AD

Table of Contents

      1. Introduction............................................3
      2. Terminologies...........................................4

      3. Requirements of VPN Auto-Discovery......................5
      3.1 Centralized Traffic Optimization.......................5
      3.2 Label/Segment Allocation for VPN Instance..............5

      4. IRT Extended Community..................................6

      5. BGP Extensions for L3VPN Auto-Discovery.................7
      5.1 BGP-VPN-INSTANCE SAFI..................................7
      5.2 BGP-VPN-INSTANCE NLRI..................................8
      5.2.1 VPN Membership A-D Route.............................8
      5.3  Procedures............................................9

      6. IANA Considerations....................................10
      6.1 BGP Extended Communities..............................10
      6.2 Subsequent Address Family Identifier..................10

      7. Security Considerations................................11

      Contributors..............................................11
      Acknowledgements..........................................11

      Normative References......................................12
      Informative References....................................13

      Authors' Addresses........................................14

Zhuang, et al                                                   [Page 2]
INTERNET-DRAFT                                 BGP Extensions For VPN AD

1. Introduction

   A variety of VPN technologies have been widely deployed to bear
   different services.  As new applications develop, a requirement has
   been proposed for auto-discovery of Layer 3 Virtual Private Networks
   (L3VPN) [RFC4364] and enhanced auto-discovery requirements for other
   VPN technologies which already have basic auto-discovery mechanisms.

   This document identifies some possible applications of these auto-
   discovery requirements and defines a new BGP NLRI [RFC4271], called
   the BGP-VPN-INSTANCE NLRI, to satisfy the requirement of auto-
   discovery of BGP VPN instance. It also defines a new type of extended
   community, called the Import Route Target (IRT), which can be applied
   to auto-discovery mechanisms of multiple VPN technologies.

Zhuang, et al                                                   [Page 3]
INTERNET-DRAFT                                 BGP Extensions For VPN AD
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