EVPN Virtual Ethernet Segment
draft-ietf-bess-evpn-virtual-eth-segment-00
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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.
Internet-Drafts are working documents of the Internet Engineering
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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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