EVPN Virtual Ethernet Segment
draft-ietf-bess-evpn-virtual-eth-segment-05

The information below is for an old version of the document
Document Type Active Internet-Draft (bess WG)
Authors Ali Sajassi  , Patrice Brissette  , Rick Schell  , John Drake  , Jorge Rabadan 
Last updated 2020-03-02
Replaces draft-sajassi-bess-evpn-virtual-eth-segment
Stream IETF
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Stream WG state WG Consensus: Waiting for Write-Up
Document shepherd LucAndré Burdet
Shepherd write-up Show (last changed 2019-02-20)
IESG IESG state I-D Exists
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Send notices to Luc André Burdet <lburdet@cisco.com>
BESS WorkGroup                                                A. Sajassi
Internet-Draft                                              P. Brissette
Intended status: Standards Track                           Cisco Systems
Expires: September 3, 2020                                     R. Schell
                                                                 Verizon
                                                                J. Drake
                                                                 Juniper
                                                              J. Rabadan
                                                                   Nokia
                                                           March 2, 2020

                     EVPN Virtual Ethernet Segment
              draft-ietf-bess-evpn-virtual-eth-segment-05

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
   introduce Single-Active and All-Active for an Ethernet Segment (ES),
   itself defined as a set of physical links between the multi-homed
   device/network and a set of PE devices that they are connected to.
   This document extends the Ethernet Segment concept so that an ES can
   be associated to a set of EVCs (e.g., VLANs) or other objects such as
   MPLS Label Switch Paths (LSPs) or Pseudowires (PWs), referred to as
   Virtual Ethernet Segments (vES).  This draft describes the
   requirements and the extensions needed to support vES in EVPN and
   PBB-EVPN.

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 RFC 2119 [RFC2119] and
   RFC 8174 [RFC8174].

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/.

Sajassi, et al.         Expires September 3, 2020               [Page 1]
Internet-Draft        EVPN Virtual Ethernet Segment           March 2020

   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 September 3, 2020.

Copyright Notice

   Copyright (c) 2020 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
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
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   include Simplified BSD License text as described in Section 4.e of
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Virtual Ethernet Segments in Access Ethernet Networks . .   3
     1.2.  Virtual Ethernet Segments in Access MPLS Networks . . . .   5
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   6
   3.  Requirements  . . . . . . . . . . . . . . . . . . . . . . . .   7
     3.1.  Single-Homed and Multi-Homed vES  . . . . . . . . . . . .   7
     3.2.  Scalability . . . . . . . . . . . . . . . . . . . . . . .   8
     3.3.  Local Switching . . . . . . . . . . . . . . . . . . . . .   8
     3.4.  EVC Service Types . . . . . . . . . . . . . . . . . . . .   9
     3.5.  Designated Forwarder (DF) Election  . . . . . . . . . . .   9
     3.6.  OAM . . . . . . . . . . . . . . . . . . . . . . . . . . .  10
     3.7.  Failure and Recovery  . . . . . . . . . . . . . . . . . .  10
     3.8.  Fast Convergence  . . . . . . . . . . . . . . . . . . . .  10
   4.  Solution Overview . . . . . . . . . . . . . . . . . . . . . .  11
     4.1.  EVPN DF Election for vES  . . . . . . . . . . . . . . . .  12
   5.  Failure Handling and Recovery . . . . . . . . . . . . . . . .  13
     5.1.  Failure Handling for Single-Active vES in EVPN  . . . . .  14
     5.2.  EVC Failure Handling for Single-Active vES in PBB-EVPN  .  15
     5.3.  Port Failure Handling for Single-Active vESes in EVPN . .  16
     5.4.  Port Failure Handling for Single-Active vESes in PBB-EVPN  17
     5.5.  Fast Convergence in (PBB-)EVPN  . . . . . . . . . . . . .  18
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