EVPN Virtual Ethernet Segment
draft-ietf-bess-evpn-virtual-eth-segment-04

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Internet Working Group                                        A. Sajassi
Internet Draft                                              P. Brissette
Category: Standards Track                                          Cisco
                                                               R. Schell
                                                                 Verizon
                                                                J. Drake
                                                                 Juniper
                                                              J. Rabadan
                                                                   Nokia
                                                                        
Expires: July 18, 2019                                  January 18, 2019

                     EVPN Virtual Ethernet Segment 
              draft-ietf-bess-evpn-virtual-eth-segment-04 

Abstract

   EVPN and PBB-EVPN introduce a family of solutions for multipoint
   Ethernet services over MPLS/IP network with many advanced features
   among which their multi-homing capabilities. These solutions define
   two types of multi-homing for an Ethernet Segment (ES): 1) Single-
   Active and 2) All-Active, where an Ethernet Segment is defined as a
   set of links between the multi-homed device/network and a set of PE
   devices that they are connected to.    

   Some Service Providers want to extend the concept of the physical
   links in an ES to Ethernet Virtual Circuits (EVCs) where many of such
   EVCs can be aggregated on a single physical External Network-to-
   Network Interface (ENNI). An ES that consists of a set of EVCs
   instead of physical links is referred to as a virtual ES (vES). This
   draft describes the requirements and the extensions needed to support
   vES in EVPN and PBB-EVPN.

Status of this Memo

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

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF), its areas, and its working groups.  Note that
   other groups may also distribute working documents as
   Internet-Drafts.

   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."
 

Sajassi et al.           Expires July 18, 2019                  [Page 1]
INTERNET DRAFT          Virtual Ethernet Segment        January 18, 2019

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Copyright and License Notice

   Copyright (c) 2014 IETF Trust and the persons identified as the
   document authors. All rights reserved.

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Conventions 

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
   "OPTIONAL" in this document are to be interpreted as described in BCP
   14 [RFC2119] [RFC8174] when, and only when, they appear in all
   capitals, as shown here.

Table of Contents

   1. Introduction  . . . . . . . . . . . . . . . . . . . . . . . . .  4
     1.1  Virtual Ethernet Segments in Access Ethernet Networks . . .  4
     1.2  Virtual Ethernet Segments in Access MPLS Networks . . . . .  5
   2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . .  7
   3. Requirements  . . . . . . . . . . . . . . . . . . . . . . . . .  8
     3.1. Single-Homed & Multi-Homed Virtual Ethernet Segments  . . .  8
     3.2. Scalability . . . . . . . . . . . . . . . . . . . . . . . .  8
     3.3. Local Switching . . . . . . . . . . . . . . . . . . . . . .  9
     3.4. EVC Service Types . . . . . . . . . . . . . . . . . . . . .  9
     3.5. Designated Forwarder (DF) Election  . . . . . . . . . . . . 10
     3.6. OAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
     3.7. Failure & Recovery  . . . . . . . . . . . . . . . . . . . . 11
     3.8. Fast Convergence  . . . . . . . . . . . . . . . . . . . . . 11
 

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