Updates on EVPN BUM Procedures
draft-zzhang-bess-evpn-bum-procedure-updates-02

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Last updated 2016-04-21
Replaced by draft-ietf-bess-evpn-bum-procedure-updates
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BESS                                                            Z. Zhang
Internet-Draft                                          Juniper Networks
Updates: 7432 (if approved)                                       W. Lin
Intended status: Standards Track                  Juniper Networks, Inc.
Expires: October 23, 2016                                     J. Rabadan
                                                                   Nokia
                                                                K. Patel
                                                           Cisco Systems
                                                          April 21, 2016

                     Updates on EVPN BUM Procedures
            draft-zzhang-bess-evpn-bum-procedure-updates-02

Abstract

   This document specifies procedure updates for broadcast, unknown
   unicast, and multicast (BUM) traffic in Ethernet VPNs (EVPN),
   including selective multicast, and provider tunnel segmentation.

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC2119.

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).  Note that other groups may also distribute
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   Drafts is at http://datatracker.ietf.org/drafts/current/.

   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
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   This Internet-Draft will expire on October 23, 2016.

Copyright Notice

   Copyright (c) 2016 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) 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.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     2.1.  Reasons for Tunnel Segmentation . . . . . . . . . . . . .   4
   3.  Additional Route Types of EVPN NLRI . . . . . . . . . . . . .   5
     3.1.  Per-Region I-PMSI A-D route . . . . . . . . . . . . . . .   5
     3.2.  S-PMSI A-D route  . . . . . . . . . . . . . . . . . . . .   6
     3.3.  Leaf-AD route . . . . . . . . . . . . . . . . . . . . . .   6
   4.  Selective Multicast . . . . . . . . . . . . . . . . . . . . .   7
   5.  Inter-AS Segmentation . . . . . . . . . . . . . . . . . . . .   7
     5.1.  Changes to Section 7.2.2 of RFC 7117  . . . . . . . . . .   7
     5.2.  I-PMSI Leaf Tracking  . . . . . . . . . . . . . . . . . .   8
     5.3.  Backward Compatibility  . . . . . . . . . . . . . . . . .   9
   6.  Inter-Region Segmentation . . . . . . . . . . . . . . . . . .  10
     6.1.  Area vs. Region . . . . . . . . . . . . . . . . . . . . .  10
     6.2.  Per-region Aggregation  . . . . . . . . . . . . . . . . .  12
     6.3.  Use of S-NH-EC  . . . . . . . . . . . . . . . . . . . . .  13
     6.4.  Ingress PE's I-PMSI Leaf Tracking . . . . . . . . . . . .  13
   7.  Multi-homing Support  . . . . . . . . . . . . . . . . . . . .  13
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  14
   9.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  14
   10. Contributors  . . . . . . . . . . . . . . . . . . . . . . . .  14
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .  14
     11.1.  Normative References . . . . . . . . . . . . . . . . . .  14
     11.2.  Informative References . . . . . . . . . . . . . . . . .  15
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  16

1.  Terminology

   To be added

2.  Introduction

   RFC 7432 specifies procedures to handle broadcast, unknown unicast,
   and multicast (BUM) traffic in Section 11, 12 and 16, using Inclusive
   Multicast Ethernet Tag Route.  A lot of details are referred to RFC

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