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

Document Type Active Internet-Draft (bess WG)
Last updated 2017-09-19
Replaces draft-zzhang-bess-evpn-bum-procedure-updates
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BESS                                                            Z. Zhang
Internet-Draft                                                    W. Lin
Updates: 7432 (if approved)                             Juniper Networks
Intended status: Standards Track                              J. Rabadan
Expires: March 23, 2018                                            Nokia
                                                                K. Patel
                                                                  Arrcus
                                                              A. Sajassi
                                                           Cisco Systems
                                                      September 19, 2017

                     Updates on EVPN BUM Procedures
             draft-ietf-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
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://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 March 23, 2018.

Zhang, et al.            Expires March 23, 2018                 [Page 1]
Internet-Draft          evpn-bum-procedure-update         September 2017

Copyright Notice

   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (https://trustee.ietf.org/license-info) in effect on the date of
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   described in the Simplified BSD License.

Table of Contents

   1.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   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 . . . . . . . . . . . . . . .   5
     3.2.  S-PMSI A-D route  . . . . . . . . . . . . . . . . . . . .   6
     3.3.  Leaf-AD route . . . . . . . . . . . . . . . . . . . . . .   6
   4.  Selective Multicast . . . . . . . . . . . . . . . . . . . . .   7
   5.  Inter-AS Segmentation . . . . . . . . . . . . . . . . . . . .   8
     5.1.  Changes to Section 7.2.2 of RFC 7117  . . . . . . . . . .   8
     5.2.  I-PMSI Leaf Tracking  . . . . . . . . . . . . . . . . . .   9
     5.3.  Backward Compatibility  . . . . . . . . . . . . . . . . .   9
   6.  Inter-Region Segmentation . . . . . . . . . . . . . . . . . .  11
     6.1.  Area vs. Region . . . . . . . . . . . . . . . . . . . . .  11
     6.2.  Per-region Aggregation  . . . . . . . . . . . . . . . . .  12
     6.3.  Use of S-NH-EC  . . . . . . . . . . . . . . . . . . . . .  13
     6.4.  Ingress PE's I-PMSI Leaf Tracking . . . . . . . . . . . .  14
   7.  Multi-homing Support  . . . . . . . . . . . . . . . . . . . .  14
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  14
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .  14
   10. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  14
   11. Contributors  . . . . . . . . . . . . . . . . . . . . . . . .  14
   12. References  . . . . . . . . . . . . . . . . . . . . . . . . .  15
     12.1.  Normative References . . . . . . . . . . . . . . . . . .  15
     12.2.  Informative References . . . . . . . . . . . . . . . . .  16
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  16
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