{
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    "abstract": "The IETF has standardized Transparent Interconnection of Lots of Links (TRILL), a protocol for least-cost transparent frame routing in multi-hop networks with arbitrary topologies and link technologies, using link-state routing and a hop count. The TRILL base protocol standard supports the labeling of TRILL Data packets with up to 4K IDs. However, there are applications that require a larger number of labels providing configurable isolation of data. This document updates RFC 6325 by specifying optional extensions to the TRILL base protocol to safely accomplish this. These extensions, called fine-grained labeling, are primarily intended for use in large data centers, that is, those with more than 4K users requiring configurable data isolation from each other.",
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    "authors": [
      {
        "name": "Donald E. Eastlake 3rd"
      },
      {
        "name": "Mingui Zhang"
      },
      {
        "name": "Puneet Agarwal"
      },
      {
        "name": "Radia Perlman"
      },
      {
        "name": "Dinesh Dutt"
      }
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      "updated": "2026-10-20T09:42:30.548Z",
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    "docNumber": "7172",
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      "updated": "2026-10-20T16:06:40.420Z",
      "version": "extractDocs.js@commit:cc2368606b5f"
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    "docTitle": "Transparent Interconnection of Lots of Links (TRILL): Fine-Grained Labeling",
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      "confidence": "high",
      "note": "Parsed from RFC index XML title",
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      "confidence": "high",
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      "source": "parsed",
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      "updated": "2026-10-20T09:42:30.548Z",
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    },
    "doi": "10.17487/RFC7172",
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      "confidence": "high",
      "note": "Parsed from RFC index XML doi",
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      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7172/",
      "updated": "2026-10-20T09:42:30.548Z",
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    "href": "https://doi.org/10.17487/RFC7172",
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      "confidence": "high",
      "note": "Derived from DOI (https://doi.org/<doi>)",
      "originalValue": null,
      "source": "resolved",
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      "updated": "2026-10-20T09:42:30.548Z",
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    "keywords": [
      "TRILL",
      "VLAN",
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    "keywords$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML keywords",
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        "TRILL",
        "VLAN",
        "Fine-Grained",
        "Label"
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      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7172/",
      "updated": "2026-10-20T16:06:40.420Z",
      "version": "extractDocs.js@commit:cc2368606b5f"
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    "pages": "27",
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      "confidence": "high",
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      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7172/",
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      "version": "extractDocs.js@commit:6ff5f1bb34e3"
    },
    "publicationDate": "2014-05-01",
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      "confidence": "high",
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      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7172/",
      "updated": "2026-10-20T09:42:30.548Z",
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      "confidence": "high",
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      "version": "extractDocs.js@commit:6ff5f1bb34e3"
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        "RFC6165",
        "RFC6439",
        "RFC7174",
        "RFC7178"
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        "note": "Parsed from RFC HTML references/informative sections",
        "originalValue": [],
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        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc7172/",
        "updated": "2026-10-20T09:42:30.548Z",
        "version": "extractDocs.js@commit:6ff5f1bb34e3"
      },
      "normative": [
        "IEEE.STD802.1Q.2011",
        "ISO.10589.2002",
        "RFC2119",
        "RFC5305",
        "RFC6325",
        "RFC7176",
        "RFC7177",
        "RFC7180"
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      "normative$meta": {
        "confidence": "high",
        "note": "Parsed from RFC HTML normative references sections",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc7172/",
        "updated": "2026-10-20T09:42:30.548Z",
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    },
    "resolvedHref": "https://www.rfc-editor.org/info/rfc7172/",
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      "note": "Final URL resolved via URL redirect verification",
      "originalValue": null,
      "source": "resolved",
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      "updated": "2026-10-20T09:42:30.548Z",
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        "confidence": "high",
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        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc7172/",
        "updated": "2026-10-20T09:42:30.548Z",
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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/rfc7172/",
        "updated": "2026-10-20T09:42:30.548Z",
        "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",
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        "version": "extractDocs.js@commit:6ff5f1bb34e3"
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      "latestVersion": true,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc7172/",
        "updated": "2026-10-20T09:42:30.548Z",
        "version": "extractDocs.js@commit:6ff5f1bb34e3"
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      "statusNote": "Proposed Standard",
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        "confidence": "high",
        "note": "Mapped from Datatracker doc.json std_level",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc7172/",
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        "version": "extractDocs.js@commit:6ff5f1bb34e3"
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        "confidence": "high",
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        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc7172/",
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