{
  "draft": "draft-ietf-bess-evpn-irb-mcast-11",
  "doc_id": "RFC9625",
  "title": "EVPN Optimized Inter-Subnet Multicast (OISM) Forwarding",
  "authors": [
    "W. Lin",
    "Z. Zhang",
    "J. Drake",
    "E. Rosen, Ed.",
    "J. Rabadan",
    "A. Sajassi"
  ],
  "format": [
    "XML",
    "TEXT",
    "HTML",
    "PDF"
  ],
  "page_count": "63",
  "pub_status": "PROPOSED STANDARD",
  "status": "PROPOSED STANDARD",
  "source": "BGP Enabled ServiceS",
  "abstract": "Ethernet VPN (EVPN) provides a service that allows a single Local Area Network (LAN), comprising a single IP subnet, to be divided into multiple segments.  Each segment may be located at a different site, and the segments are interconnected by an IP or MPLS backbone.  Intra-subnet traffic (either unicast or multicast) always appears to the end users to be bridged, even when it is actually carried over the IP or MPLS backbone.  When a single tenant owns multiple such LANs, EVPN also allows IP unicast traffic to be routed between those LANs.  This document specifies new procedures that allow inter-subnet IP multicast traffic to be routed among the LANs of a given tenant while still making intra-subnet IP multicast traffic appear to be bridged.  These procedures can provide optimal routing of the inter-subnet multicast traffic and do not require any such traffic to egress a given router and then ingress that same router.  These procedures also accommodate IP multicast traffic that originates or is destined to be external to the EVPN domain.",
  "pub_date": "August 2024",
  "keywords": [
    "OISM",
    "PEG",
    "MEG",
    "SBD"
  ],
  "obsoletes": [],
  "obsoleted_by": [],
  "updates": [],
  "updated_by": [],
  "see_also": [],
  "doi": "10.17487/RFC9625",
  "errata_url": null
}