Updates on EVPN BUM Procedures
draft-zzhang-bess-evpn-bum-procedure-updates-01

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BESS                                                            Z. Zhang
Internet-Draft                                                    W. Lin
Updates: 7432 (if approved)                       Juniper Networks, Inc.
Intended status: Standards Track                              J. Rabadan
Expires: June 20, 2016                                    Alcatel-Lucent
                                                                K. Patel
                                                           Cisco Systems
                                                       December 18, 2015

                     Updates on EVPN BUM Procedures
            draft-zzhang-bess-evpn-bum-procedure-updates-01

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
   working documents as Internet-Drafts.  The list of current Internet-
   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
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on June 20, 2016.

Copyright Notice

   Copyright (c) 2015 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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Internet-Draft          evpn-bum-procedure-update          December 2015

   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  . . . . . . . . . . . . . . . . . . . . . . . .   3
     2.1.  Reasons for Tunnel Segmentation . . . . . . . . . . . . .   4
   3.  Additional Route Types of EVPN NLRI . . . . . . . . . . . . .   5
     3.1.  Per-Region I-PMSI A-D route . . . . . . . . . . . . . . .   6
     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.  Intra-region Segmentation and Assisted Ingress Replication  .  13
     7.1.  Reducing Leaf A-D Routes  . . . . . . . . . . . . . . . .  14
     7.2.  Mix of inter-region and intra-region segmentation . . . .  15
   8.  Multi-homing Support  . . . . . . . . . . . . . . . . . . . .  15
   9.  EVPN DCI  . . . . . . . . . . . . . . . . . . . . . . . . . .  15
     9.1.  Non-GW Option . . . . . . . . . . . . . . . . . . . . . .  16
     9.2.  GW option . . . . . . . . . . . . . . . . . . . . . . . .  17
   10. Security Considerations . . . . . . . . . . . . . . . . . . .  18
   11. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  18
   12. References  . . . . . . . . . . . . . . . . . . . . . . . . .  18
     12.1.  Normative References . . . . . . . . . . . . . . . . . .  18
     12.2.  Informative References . . . . . . . . . . . . . . . . .  19
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  19

1.  Terminology

   To be added

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