Protocol Independent Multicast Light
RFC 9739, “Protocol Independent Multicast Light”, is a Proposed Standard document published in March 2025 by H. Bidgoli, S. Venaas, M. Mishra, Z. Zhang, M. McBride. The canonical text is published by the RFC Editor.
Abstract
This document specifies Protocol Independent Multicast Light (PIM Light) and the PIM Light Interface (PLI). A PLI does not need a PIM Hello message to accept PIM Join/Prune messages, and it can signal multicast states over networks that cannot support full PIM neighbor discovery, such as Bit Index Explicit Replication (BIER) networks that connect two or more PIM domains. This document outlines the PIM Light protocol and procedures to ensure loop-free multicast traffic between two or more PIM Light routers.
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 9739 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
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- RFC 9741 Concise Data Definition Language : Additional Control Operators for the Conversion and Processing of Text
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