BGP MPLS Based Ethernet VPN
draft-ietf-l2vpn-evpn-00

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Document Type Active Internet-Draft (l2vpn WG)
Last updated 2012-02-27
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Network Working Group                                        R. Aggarwal
INTERNET-DRAFT                                                    Arktan
Category: Standards Track                                               
Expires: August 25, 2012                                      A. Sajassi
                                                                   Cisco
                                                                        
J. Uttaro                                                  W. Henderickx
AT&T                                                      Alcatel-Lucent
                                                                        
A. Isaac                                                        N. Bitar
Bloomberg                                                        Verizon
                                                                        
F. Balus                                                      R. Shekhar
Alcatel-Lucent                                                  J. Drake
                                                        Juniper Networks
S. Boutros                                                              
K. Patel                                                                
Cisco                                                  February 24, 2012

                      BGP MPLS Based Ethernet VPN 
                        draft-ietf-l2vpn-evpn-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) 2012 IETF Trust and the persons identified as the
 

raggarwa,sajassi,et al. Expires August 25, 2012                 [Page 1]
INTERNET DRAFT        BGP MPLS Based Ethernet VPN      February 22, 2012

   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
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   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Abstract

   This document describes procedures for BGP MPLS based Ethernet VPNs
   (E-VPN).

Table of Contents

   1. Specification of requirements . . . . . . . . . . . . . . . . .  4
   2. Contributors  . . . . . . . . . . . . . . . . . . . . . . . . .  4
   3. Introduction  . . . . . . . . . . . . . . . . . . . . . . . . .  4
   4. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . .  4
   5. BGP MPLS Based E-VPN Overview . . . . . . . . . . . . . . . . .  4
   6. Ethernet Segment Identifier . . . . . . . . . . . . . . . . . .  6
   7. BGP E-VPN NLRI  . . . . . . . . . . . . . . . . . . . . . . . .  7
     7.1. Ethernet Auto-Discovery Route . . . . . . . . . . . . . . .  8
     7.2.  MAC Advertisement Route  . . . . . . . . . . . . . . . . .  8
     7.3. Inclusive Multicast Ethernet Tag Route  . . . . . . . . . .  9
   8. ESI MPLS Label Extended Community . . . . . . . . . . . . . . .  9
   9. Auto-Discovery  . . . . . . . . . . . . . . . . . . . . . . . .  9
   10. Auto-Discovery of Ethernet Tags on Ethernet Segments . . . . . 10
     10.1. Constructing the Ethernet A-D Route  . . . . . . . . . . . 10
       10.1.1. Ethernet A-D Route per E-VPN . . . . . . . . . . . . . 11
         10.1.1.1. Ethernet A-D Route Targets . . . . . . . . . . . . 12
       10.1.2. Ethernet A-D Route per Ethernet Segment  . . . . . . . 12
         10.1.2.1. Ethernet A-D Route Targets . . . . . . . . . . . . 13
     10.2. Motivations for Ethernet A-D Route per Ethernet Segment  . 13
       10.2.1. Multi-Homing . . . . . . . . . . . . . . . . . . . . . 14
       10.2.2. Optimizing Control Plane Convergence . . . . . . . . . 14
       10.2.3. Reducing Number of Ethernet A-D Routes . . . . . . . . 14
   11. Determining Reachability to Unicast MAC Addresses  . . . . . . 14
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