{
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  "docId": "RFC6439",
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    "abstract": "The IETF TRILL (TRansparent Interconnection of Lots of Links) protocol provides least cost pair-wise data forwarding without configuration in multi-hop networks with arbitrary topology, safe forwarding even during periods of temporary loops, and support for multipathing of both unicast and multicast traffic. TRILL accomplishes this by using IS-IS (Intermediate System to Intermediate System) link state routing and by encapsulating traffic using a header that includes a hop count. Devices that implement TRILL are called \"RBridges\" (Routing Bridges). TRILL supports multi-access LAN (Local Area Network) links that can have multiple end stations and RBridges attached. Where multiple RBridges are attached to a link, native traffic to and from end stations on that link is handled by a subset of those RBridges called \"Appointed Forwarders\", with the intent that native traffic in each VLAN (Virtual LAN) be handled by at most one RBridge. The purpose of this document is to improve the documentation of the Appointed Forwarder mechanism; thus, it updates RFC 6325. [STANDARDS-TRACK]",
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    "authors": [
      {
        "name": "Radia Perlman"
      },
      {
        "name": "Donald E. Eastlake 3rd"
      },
      {
        "name": "Yizhou Li"
      },
      {
        "name": "Ayan Banerjee"
      },
      {
        "name": "fangwei hu"
      }
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      "confidence": "high",
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      "sourceUrl": "https://www.rfc-editor.org/info/rfc6439/",
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    "docNumber": "6439",
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      "confidence": "high",
      "note": "Parsed from RFC info page report metadata",
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      "source": "parsed",
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      "updated": "2026-10-20T16:06:35.487Z",
      "version": "extractDocs.js@commit:cc2368606b5f"
    },
    "docTitle": "Routing Bridges (RBridges): Appointed Forwarders",
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      "confidence": "high",
      "note": "Parsed from RFC index XML title",
      "originalValue": null,
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      "originalValue": null,
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      "updated": "2026-10-20T09:42:29.199Z",
      "version": "extractDocs.js@commit:6ff5f1bb34e3"
    },
    "doi": "10.17487/RFC6439",
    "doi$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML doi",
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      "source": "resolved",
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      "updated": "2026-10-20T09:42:29.199Z",
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    "href": "https://doi.org/10.17487/RFC6439",
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      "confidence": "high",
      "note": "Derived from DOI (https://doi.org/<doi>)",
      "originalValue": null,
      "source": "resolved",
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      "updated": "2026-10-20T09:42:29.199Z",
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      "TRILL"
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      "confidence": "high",
      "note": "Parsed from RFC index XML keywords",
      "originalValue": [
        "TRILL",
        "TRansparent Interconnection of Lots of Links"
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      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6439/",
      "updated": "2026-10-20T16:06:35.487Z",
      "version": "extractDocs.js@commit:cc2368606b5f"
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      "confidence": "high",
      "note": "Parsed from RFC index XML page-count",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6439/",
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      "version": "extractDocs.js@commit:6ff5f1bb34e3"
    },
    "publicationDate": "2011-11-01",
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      "confidence": "high",
      "note": "Parsed from RFC index XML date",
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      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6439/",
      "updated": "2026-10-20T09:42:29.199Z",
      "version": "extractDocs.js@commit:6ff5f1bb34e3"
    },
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      "confidence": "high",
      "note": "Static: provider",
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      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6439/",
      "updated": "2026-10-20T09:42:29.199Z",
      "version": "extractDocs.js@commit:6ff5f1bb34e3"
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      "bibliographic$meta": {
        "confidence": "medium",
        "note": "Citations without a standard ID, kept as MRI orphan refs (or resolved once the reference label was stripped)",
        "originalValue": null,
        "source": "parsed",
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        "updated": "2026-10-20T09:42:47.224Z",
        "version": "extractDocs.js@commit:6ff5f1bb34e3"
      },
      "normative": [
        "IEEE.STD802.1Q.2011",
        "ISO.10589.2002",
        "RFC1195",
        "RFC2119",
        "RFC6325",
        "RFC6326",
        "RFC6327"
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        "confidence": "high",
        "note": "Parsed from RFC HTML normative references sections",
        "originalValue": [],
        "source": "parsed",
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        "updated": "2026-10-20T09:42:29.199Z",
        "version": "extractDocs.js@commit:6ff5f1bb34e3"
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    "resolvedHref": "https://www.rfc-editor.org/info/rfc6439/",
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      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6439/",
      "updated": "2026-10-20T09:42:29.199Z",
      "version": "extractDocs.js@commit:6ff5f1bb34e3"
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        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6439/",
        "updated": "2026-10-20T09:42:29.199Z",
        "version": "extractDocs.js@commit:6ff5f1bb34e3"
      },
      "amendedBy": [
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        "confidence": "high",
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        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6439/",
        "updated": "2026-10-20T09:42:29.199Z",
        "version": "extractDocs.js@commit:6ff5f1bb34e3"
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      "amends": [
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        "confidence": "high",
        "note": "Parsed from RFC index XML",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6439/",
        "updated": "2026-10-20T09:42:29.199Z",
        "version": "extractDocs.js@commit:6ff5f1bb34e3"
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        "confidence": "high",
        "note": "Derived from presence of errata links on RFC/Datatracker pages",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6439/",
        "updated": "2026-10-20T09:42:29.199Z",
        "version": "extractDocs.js@commit:6ff5f1bb34e3"
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      "latestVersion": false,
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        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6439/",
        "updated": "2026-10-20T09:42:29.199Z",
        "version": "extractDocs.js@commit:6ff5f1bb34e3"
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      "statusNote": "Proposed Standard",
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        "confidence": "high",
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        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6439/",
        "updated": "2026-10-20T09:42:29.199Z",
        "version": "extractDocs.js@commit:6ff5f1bb34e3"
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      "superseded$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6439/",
        "updated": "2026-10-20T09:42:29.199Z",
        "version": "extractDocs.js@commit:6ff5f1bb34e3"
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        "confidence": "high",
        "note": "Parsed from RFC index XML",
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        "source": "resolved",
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