Multicast VPN Fast Upstream Failover
RFC 9026, “Multicast VPN Fast Upstream Failover”, is a Proposed Standard document published in April 2021 by T. Morin, R. Kebler, G. Mirsky. The canonical text is published by the RFC Editor.
Abstract
This document defines Multicast Virtual Private Network (VPN) extensions and procedures that allow fast failover for upstream failures by allowing downstream Provider Edges (PEs) to consider the status of Provider-Tunnels (P-tunnels) when selecting the Upstream PE for a VPN multicast flow. The fast failover is enabled by using "Bidirectional Forwarding Detection (BFD) for Multipoint Networks" (RFC 8562) and the new BGP Attribute, BFD Discriminator. Also, this document introduces a new BGP Community, Standby PE, extending BGP Multicast VPN (MVPN) routing so that a C-multicast route can be advertised toward a Standby Upstream PE.
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 9026 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
- RFC 9025 Deterministic Networking Data Plane: MPLS over UDP/IP
- RFC 9027 Assertion Values for Resource Priority Header and SIP Priority Header Claims in Support of Emergency Services Networks
- RFC 9024 Deterministic Networking Data Plane: IEEE 802.1 Time- Sensitive Networking over MPLS
- RFC 9028 Native NAT Traversal Mode for the Host Identity Protocol
- RFC 9023 Deterministic Networking Data Plane: IP over IEEE 802.1 Time-Sensitive Networking
- RFC 9029 Updates to the Allocation Policy for the Border Gateway Protocol - Link State Parameters Registries
- RFC 9022 Domain Name Registration Data Objects Mapping
- RFC 9030 An Architecture for IPv6 over the Time-Slotted Channel Hopping Mode of IEEE 802.15.4