BGP Dissemination of L2 Flow Specification Rules
draft-ietf-idr-flowspec-l2vpn-13

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Last updated 2019-12-31
Replaces draft-hao-idr-flowspec-evpn
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INTERNET-DRAFT                                                    W. Hao
Intended Status: Proposed Standard                   Huawei Technologies
                                                             D. Eastlake
                                                  Futurewei Technologies
                                                               J. Uttaro
                                                                    AT&T
                                                            S. Litkowski
                                                           Cisco Systems
                                                               S. Zhuang
                                                     Huawei Technologies
Expires: June 30, 2020                                 December 31, 2019

            BGP Dissemination of L2 Flow Specification Rules
                    draft-ietf-idr-flowspec-l2vpn-13

Abstract
   This document defines a Border Gateway Protocol (BGP) Flow-spec
   extension to disseminate Ethernet Layer 2 (L2) and Layer 2 Virtual
   Private Network (L2VPN) traffic filtering rules either by themselves
   or in conjunction with L3 Flow-specs.  AFI/SAFI 6/133 and 25/134 are
   used for these purposes.  New component types and an extended
   community also are defined.

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W. Hao, et al                                                   [Page 1]
INTERNET-DRAFT                                              L2 Flow Spec

Table of Contents

      1. Introduction............................................3
      1.1 Terminology............................................4

      2. Layer 2 Flow Specification Encoding.....................5
      2.1 L2 Component Types.....................................6
      2.1.1 Type 1 - Ethernet Type (EtherType)...................6
      2.1.2 Type 2 - Source MAC..................................7
      2.1.3 Type 3 - Destination MAC.............................7
      2.1.4 Type 4 - DSAP (Destination Service Access Point).....7
      2.1.5 Type 5 - SSAP (Source Service Access Point)..........7
      2.1.6 Type 6 - Control field in LLC........................7
      2.1.7 Type 7 - SNAP........................................8
      2.1.8 Type 8 - VLAN ID.....................................8
      2.1.9 Type 9 - VLAN PCP....................................8
      2.1.10 Type 10 - Inner VLAN ID.............................8
      2.1.11 Type 11 - Inner VLAN PCP............................9
      2.1.12 Type 12 - VLAN DEI..................................9
      2.1.13 Type 13 - Inner VLAN DEI............................9
      2.1.14 Type 14 - Source MAC Special Bits...................9
      2.1.15 Type 15 - Destination MAC Special Bits.............10
      2.2 Order of L2 Traffic Filtering Rules...................10

      3. L2VPN Flow Specification Encoding in BGP...............12
      3.1 Order of L2VPN Filtering Rules........................12

      4. Ethernet Flow Specification Traffic Actions............13
      4.1 VLAN-action...........................................13
      4.2 TPID-action...........................................15

      5. Flow Spec Validation...................................16

      6. IANA Considerations....................................17

      7. Security Considerations................................18
      8. Acknowledgements.......................................18
      9. Contributors...........................................18

      Normative References......................................19
      Informative References....................................20

W. Hao, et al                                                   [Page 2]
INTERNET-DRAFT                                              L2 Flow Spec

1. Introduction

   Border Gateway Protocol (BGP) Flow-spec [RFC5575bis] is an extension
   to BGP that supports the dissemination of traffic flow specification
   rules and actions to be taken on packets in a specified flow.  It
   leverages the BGP Control Plane to simplify the distribution of ACLs
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