Abstract
This document describes the IP multicast traceroute facility, named Mtrace version 2 (Mtrace2). Unlike unicast traceroute, Mtrace2 requires special implementations on the part of routers. This specification describes the required functionality in multicast routers, as well as how an Mtrace2 client invokes a query and receives a reply.
Draft: https://tools.ietf.org/html/draft-ietf-mboned-mtrace-v2
Official RFC: https://www.rfc-editor.org/rfc/rfc8487.txt