{
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  "docId": "RFC9552",
  "document": {
    "abstract": "In many environments, a component external to a network is called upon to perform computations based on the network topology and the current state of the connections within the network, including Traffic Engineering (TE) information. This is information typically distributed by IGP routing protocols within the network. This document describes a mechanism by which link-state and TE information can be collected from networks and shared with external components using the BGP routing protocol. This is achieved using a BGP Network Layer Reachability Information (NLRI) encoding format. The mechanism applies to physical and virtual (e.g., tunnel) IGP links. The mechanism described is subject to policy control. Applications of this technique include Application-Layer Traffic Optimization (ALTO) servers and Path Computation Elements (PCEs). This document obsoletes RFC 7752 by completely replacing that document. It makes some small changes and clarifications to the previous specification. This document also obsoletes RFC 9029 by incorporating the updates that it made to RFC 7752.",
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      "confidence": "high",
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      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9552/",
      "updated": "2026-10-14T18:51:22.518Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "authors": [
      {
        "name": "Ketan Talaulikar"
      }
    ],
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      "confidence": "high",
      "note": "Parsed from Datatracker doc page article:author (profile full names)",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9552/",
      "updated": "2026-10-14T18:51:22.518Z",
      "version": "extractDocs.js@commit:673dd514c094"
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    "docId": "RFC9552",
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      "confidence": "high",
      "note": "Derived from RFC number or Datatracker identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9552/",
      "updated": "2026-10-14T18:51:22.518Z",
      "version": "extractDocs.js@commit:673dd514c094"
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    "docLabel": "IETF RFC 9552",
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      "confidence": "high",
      "note": "Constructed from provider and document identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9552/",
      "updated": "2026-10-14T18:51:22.518Z",
      "version": "extractDocs.js@commit:673dd514c094"
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    "docNumber": "9552",
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      "confidence": "high",
      "note": "Parsed from RFC info page report metadata",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9552/",
      "updated": "2026-10-14T18:51:22.518Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "docTitle": "Distribution of Link-State and Traffic Engineering Information Using BGP",
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      "confidence": "high",
      "note": "Parsed from RFC index XML title",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9552/",
      "updated": "2026-10-14T18:51:22.518Z",
      "version": "extractDocs.js@commit:673dd514c094"
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    "docType": "Standard",
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      "confidence": "high",
      "note": "Mapped from Datatracker std_level or RFC status text",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9552/",
      "updated": "2026-10-14T18:51:22.518Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "doi": "10.17487/RFC9552",
    "doi$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML doi",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9552/",
      "updated": "2026-10-14T18:51:22.518Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "href": "https://doi.org/10.17487/RFC9552",
    "href$meta": {
      "confidence": "high",
      "note": "Derived from DOI (https://doi.org/<doi>)",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9552/",
      "updated": "2026-10-14T18:51:22.518Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "keywords": [
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      "Identification"
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    "keywords$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML keywords",
      "originalValue": [
        "Measurement",
        "Identification",
        "Probing",
        "Out-of-band",
        "In-band"
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      "overridden": true,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9552/",
      "updated": "2026-10-15T16:41:46.447Z",
      "version": "extractDocs.js@commit:0f51bb226575"
    },
    "pages": "60",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML page-count",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9552/",
      "updated": "2026-10-14T18:51:22.518Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "publicationDate": "2023-12-01",
    "publicationDate$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML date",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9552/",
      "updated": "2026-10-14T18:51:22.518Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "publisher": "IETF",
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      "confidence": "high",
      "note": "Static: provider",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9552/",
      "updated": "2026-10-14T18:51:22.518Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "references": {
      "bibliographic": [
        "RFC1918",
        "RFC4272",
        "RFC4364",
        "RFC4655",
        "RFC5152",
        "RFC5392",
        "RFC5693",
        "RFC5706",
        "RFC6549",
        "RFC6952",
        "RFC7285",
        "RFC7752",
        "RFC7911",
        "RFC8202",
        "RFC9029",
        "RFC9346"
      ],
      "bibliographic$meta": {
        "confidence": "high",
        "note": "Parsed from RFC HTML references/informative sections",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc9552/",
        "updated": "2026-10-14T18:51:22.518Z",
        "version": "extractDocs.js@commit:673dd514c094"
      },
      "normative": [
        "ISO.10589.2002",
        "RFC2119",
        "RFC2328",
        "RFC2545",
        "RFC3209",
        "RFC4202",
        "RFC4203",
        "RFC4271",
        "RFC4577",
        "RFC4760",
        "RFC4915",
        "RFC5036",
        "RFC5120",
        "RFC5130",
        "RFC5301",
        "RFC5305",
        "RFC5307",
        "RFC5340",
        "RFC5642",
        "RFC5890",
        "RFC6119",
        "RFC6565",
        "RFC7606",
        "RFC7684",
        "RFC7770",
        "RFC8126",
        "RFC8174",
        "RFC8362",
        "RFC8654",
        "orphan/RFC9552/h:da01201b"
      ],
      "normative$meta": {
        "confidence": "high",
        "note": "Parsed from RFC HTML normative references sections",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc9552/",
        "updated": "2026-10-14T18:51:22.518Z",
        "version": "extractDocs.js@commit:673dd514c094"
      }
    },
    "resolvedHref": "https://www.rfc-editor.org/info/rfc9552/",
    "resolvedHref$meta": {
      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9552/",
      "updated": "2026-10-14T18:51:22.518Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "status": {
      "active": true,
      "active$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc9552/",
        "updated": "2026-10-14T18:51:22.518Z",
        "version": "extractDocs.js@commit:673dd514c094"
      },
      "errataExist": true,
      "errataExist$meta": {
        "confidence": "high",
        "note": "Derived from presence of errata links on RFC/Datatracker pages",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc9552/",
        "updated": "2026-10-14T18:51:22.518Z",
        "version": "extractDocs.js@commit:673dd514c094"
      },
      "errataUrl": [
        "https://www.rfc-editor.org/errata/rfc9552",
        "https://www.rfc-editor.org/errata_search.php?rfc=9552",
        "https://www.rfc-editor.org/rfc/inline-errata/rfc9552.html"
      ],
      "errataUrl$meta": {
        "confidence": "high",
        "note": "Parsed from errata links on RFC/Datatracker pages",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc9552/",
        "updated": "2026-10-14T18:51:22.518Z",
        "version": "extractDocs.js@commit:673dd514c094"
      },
      "latestVersion": true,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc9552/",
        "updated": "2026-10-14T18:51:22.518Z",
        "version": "extractDocs.js@commit:673dd514c094"
      },
      "statusNote": "Proposed Standard",
      "statusNote$meta": {
        "confidence": "high",
        "note": "Mapped from Datatracker doc.json std_level",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc9552/",
        "updated": "2026-10-14T18:51:22.518Z",
        "version": "extractDocs.js@commit:673dd514c094"
      },
      "superseded": false,
      "superseded$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc9552/",
        "updated": "2026-10-14T18:51:22.518Z",
        "version": "extractDocs.js@commit:673dd514c094"
      },
      "supersedes": [
        "RFC7752",
        "RFC9029"
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      "supersedes$meta": {
        "confidence": "high",
        "note": "Parsed from RFC index XML",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc9552/",
        "updated": "2026-10-14T18:51:22.518Z",
        "version": "extractDocs.js@commit:673dd514c094"
      }
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}