Internet Working Group Ali Sajassi
Internet Draft Samer Salam
Category: Standards Track Sami Boutros
Cisco
Florin Balus Nabil Bitar
Wim Henderickx Verizon
Alcatel-Lucent
Aldrin Isaac
Clarence Filsfils Bloomberg
Dennis Cai
Cisco Lizhong Jin
ZTE
Expires: August 25, 2013 February 25, 2013
PBB-EVPN
draft-ietf-l2vpn-pbb-evpn-04
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This document is subject to BCP 78 and the IETF Trust's Legal
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Abstract
This document discusses how Ethernet Provider Backbone Bridging
[802.1ah] can be combined with E-VPN in order to reduce the number of
BGP MAC advertisement routes by aggregating Customer/Client MAC (C-
MAC) addresses via Provider Backbone MAC address (B-MAC), provide
client MAC address mobility using C-MAC aggregation and B-MAC sub-
netting, confine the scope of C-MAC learning to only active flows,
offer per site policies and avoid C-MAC address flushing on topology
changes. The combined solution is referred to as 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
2. Contributors . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 4
4. Requirements . . . . . . . . . . . . . . . . . . . . . . . . . 4
4.1. MAC Advertisement Route Scalability . . . . . . . . . . . 5
4.2. C-MAC Mobility with MAC Summarization . . . . . . . . . . 5
4.3. C-MAC Address Learning and Confinement . . . . . . . . . . 5
4.4. Per Site Policy Support . . . . . . . . . . . . . . . . . 6
4.5. Avoiding C-MAC Address Flushing . . . . . . . . . . . . . 6
5. Solution Overview . . . . . . . . . . . . . . . . . . . . . . 6
6. BGP Encoding . . . . . . . . . . . . . . . . . . . . . . . . . 7
6.1. BGP MAC Advertisement Route . . . . . . . . . . . . . . . 7
6.2. Ethernet Auto-Discovery Route . . . . . . . . . . . . . . 7
6.3. Per VPN Route Targets . . . . . . . . . . . . . . . . . . 8
6.4. MAC Mobility Extended Community . . . . . . . . . . . . . 8
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