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Per multicast flow Designated Forwarder Election for EVPN
draft-ietf-bess-evpn-per-mcast-flow-df-election-12

The information below is for an old version of the document.
Document Type
This is an older version of an Internet-Draft whose latest revision state is "Active".
Expired & archived
Authors Ali Sajassi , Mankamana Prasad Mishra , Samir Thoria , Jorge Rabadan , John Drake
Last updated 2026-01-08 (Latest revision 2025-07-07)
Replaces draft-sajassi-bess-evpn-per-mcast-flow-df-election
RFC stream Internet Engineering Task Force (IETF)
Formats
Reviews
Additional resources Mailing list discussion
Stream WG state WG Document
Document shepherd Zhaohui (Jeffrey) Zhang
IESG IESG state Expired
Consensus boilerplate Unknown
Telechat date (None)
Responsible AD (None)
Send notices to zzhang@juniper.net

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:

Abstract

This document defines an enhancement to the Designated Forwarder (DF) election process in Ethernet Virtual Private Network (EVPN) environments. While traditional DF election operates at a per Virtual Local Area Network (VLAN) or per group of VLANs (in case of VLAN bundle or VLAN-aware bundle service) level, such granularity may not be sufficient for applications requiring optimized or isolated multicast forwarding. This specification introduces a refined DF election mechanism that extends existing hash-based methods to operate at a more granular level specifically at the tuple of Ethernet Segment Identifier (ESI), VLAN, and multicast flow. This approach enables improved traffic distribution, enhanced load balancing, and greater deployment flexibility for multicast delivery in EVPN based networks. The proposed method is designed to remain compatible with existing DF election procedures while offering targeted improvements for multicast scenarios.

Authors

Ali Sajassi
Mankamana Prasad Mishra
Samir Thoria
Jorge Rabadan
John Drake

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