EVPN Optimized Inter-Subnet Multicast (OISM) Forwarding
draft-lin-bess-evpn-irb-mcast-04

Document Type Replaced Internet-Draft (candidate for bess WG)
Last updated 2018-04-27 (latest revision 2017-10-24)
Replaced by draft-ietf-bess-evpn-irb-mcast
Stream IETF
Intended RFC status (None)
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Expired & archived
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Stream WG state Call For Adoption By WG Issued
Document shepherd No shepherd assigned
IESG IESG state Replaced by draft-ietf-bess-evpn-irb-mcast
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at
https://www.ietf.org/archive/id/draft-lin-bess-evpn-irb-mcast-04.txt

Abstract

Ethernet VPN (EVPN) provides a service that allows a single Local Area Network (LAN), i.e., a single IP subnet, to be distributed over multiple sites. The sites are interconnected by an IP or MPLS backbone. Intra-subnet traffic (either unicast or multicast) always appears to the endusers to be bridged, even when it is actually carried over the IP backbone. When a single "tenant" owns multiple such LANs, EVPN also allows IP unicast traffic to be routed between those LANs. This document specifies new procedures that allow inter- subnet IP multicast traffic to be routed among the LANs of a given tenant, while still making intra-subnet IP multicast traffic appear to be bridged. These procedures can provide optimal routing of the inter-subnet multicast traffic, and do not require any such traffic to leave a given router and then reenter that same router. These procedures also accommodate IP multicast traffic that needs to travel to or from systems that are outside the EVPN domain.

Authors

Wen Lin (wlin@juniper.net)
Zhaohui Zhang (zzhang@juniper.net)
John Drake (jdrake@juniper.net)
Eric Rosen (erosen@juniper.net)
Jorge Rabadan (jorge.rabadan@nokia.com)
Ali Sajassi (sajassi@cisco.com)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)