EVPN Port-Active Redundancy Mode
RFC 9786, “EVPN Port-Active Redundancy Mode”, is a Proposed Standard document published in June 2025 by P. Brissette, LA. Burdet, B. Wen, E. Leyton, J. Rabadan. The canonical text is published by the RFC Editor.
Abstract
The Multi-Chassis Link Aggregation (MC-LAG) group technology enables establishing a logical link-aggregation connection with a redundant group of independent nodes. The objective of MC-LAG is to enhance both network availability and bandwidth utilization through various modes of traffic load balancing. RFC 7432 defines an EVPN-based MC-LAG with Single-Active and All-Active multihoming redundancy modes. This document builds on the existing redundancy mechanisms supported by EVPN and introduces a new active/standby redundancy mode, called 'Port-Active'.
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 9786 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
- RFC 9785 Preference-Based EVPN Designated Forwarder Election
- RFC 9787 Guidance on End-to-End Email Security
- RFC 9784 Virtual Ethernet Segments for EVPN and Provider Backbone Bridge EVPN
- RFC 9788 Header Protection for Cryptographically Protected Email
- RFC 9783 Arm's Platform Security Architecture Attestation Token
- RFC 9789 MPLS Network Actions Framework
- RFC 9782 Entity Attestation Token Media Types
- RFC 9790 IANA Registry and Processing Recommendations for the First Nibble Following a Label Stack