EVPN Virtual Ethernet Segment
draft-ietf-bess-evpn-virtual-eth-segment-00

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Last updated 2018-06-19
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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: December 18, 2016                                 June 18, 2018

                     EVPN Virtual Ethernet Segment 
              draft-ietf-bess-evpn-virtual-eth-segment-00 

Status of this Memo

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

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Copyright and License Notice

   Copyright (c) 2014 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
   (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
 

Sajassi et al.         Expires December 18, 2018                [Page 1]
INTERNET DRAFT                  PBB-EVPN                   June 18, 2018

   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.

Abstract

   EVPN and PBB-EVPN introduce a family of solutions for multipoint
   Ethernet services over MPLS/IP network with many advanced
   capabilities 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 the 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.

Conventions

   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 RFC 2119. 

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  . . . . . . . . . . . . . . . . . . . . 10
     3.8. Fast Convergence  . . . . . . . . . . . . . . . . . . . . . 11
   4. Solution Overview . . . . . . . . . . . . . . . . . . . . . . . 11
     4.1. EVPN DF Election for vES  . . . . . . . . . . . . . . . . . 13
   5. Failure Handling & Recovery . . . . . . . . . . . . . . . . . . 14
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