{
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  "docId": "RFC7771",
  "document": {
    "abstract": "In MPLS and MPLS Transport Profile (MPLS-TP) environments, statically provisioned Single-Segment Pseudowires (SS-PWs) are protected against tunnel failure via MPLS-level and MPLS-TP-level tunnel protection. With statically provisioned Multi-Segment Pseudowires (MS-PWs), each segment of the MS-PW is likewise protected from tunnel failures via MPLS-level and MPLS-TP-level tunnel protection. However, static MS-PWs are not protected end-to-end against failure of one of the Switching Provider Edge Routers (S-PEs) along the path of the MS-PW. This document describes how to achieve this protection via redundant MS-PWs by updating the existing procedures in RFC 6870. It also contains an optional approach based on MPLS-TP Linear Protection.",
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      "updated": "2026-10-14T18:50:51.323Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "authors": [
      {
        "name": "Andrew G. Malis"
      },
      {
        "name": "Loa Andersson"
      },
      {
        "name": "Huub van Helvoort"
      },
      {
        "name": "Jongyoon Shin"
      },
      {
        "name": "Lei Wang"
      },
      {
        "name": "Alessandro D'Alessandro"
      }
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      "updated": "2026-10-14T18:50:51.323Z",
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      "sourceUrl": "https://www.rfc-editor.org/info/rfc7771/",
      "updated": "2026-10-14T18:50:51.323Z",
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    "docLabel": "IETF RFC 7771",
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      "confidence": "high",
      "note": "Constructed from provider and document identifier",
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      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7771/",
      "updated": "2026-10-14T18:50:51.323Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "docNumber": "7771",
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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/rfc7771/",
      "updated": "2026-10-14T18:50:51.323Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "docTitle": "Switching Provider Edge (S-PE) Protection for MPLS and MPLS Transport Profile (MPLS-TP) Static Multi-Segment Pseudowires",
    "docTitle$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML title",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7771/",
      "updated": "2026-10-14T18:50:51.323Z",
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    "docType": "Standard",
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      "confidence": "high",
      "note": "Mapped from Datatracker std_level or RFC status text",
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      "updated": "2026-10-14T18:50:51.323Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "doi": "10.17487/RFC7771",
    "doi$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML doi",
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      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7771/",
      "updated": "2026-10-14T18:50:51.323Z",
      "version": "extractDocs.js@commit:673dd514c094"
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    "href": "https://doi.org/10.17487/RFC7771",
    "href$meta": {
      "confidence": "high",
      "note": "Derived from DOI (https://doi.org/<doi>)",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7771/",
      "updated": "2026-10-14T18:50:51.323Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "keywords": [
      "Email Encryption",
      "Linear Protection"
    ],
    "keywords$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML keywords",
      "originalValue": [
        "End-to-end Protection",
        "Linear Protection"
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      "overridden": true,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7771/",
      "updated": "2026-10-15T16:41:12.977Z",
      "version": "extractDocs.js@commit:0f51bb226575"
    },
    "pages": "9",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML page-count",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7771/",
      "updated": "2026-10-14T18:50:51.323Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "publicationDate": "2016-01-01",
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      "confidence": "high",
      "note": "Parsed from RFC index XML date",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7771/",
      "updated": "2026-10-14T18:50:51.323Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "publisher": "IETF",
    "publisher$meta": {
      "confidence": "high",
      "note": "Static: provider",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7771/",
      "updated": "2026-10-14T18:50:51.323Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "references": {
      "bibliographic": [
        "IETF.draft-ietf-pals-redundancy-spe-02",
        "RFC5659",
        "RFC6718"
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      "bibliographic$meta": {
        "confidence": "medium",
        "flag": "MIXED_REF_LAYOUT_RISK anchored=9 proseBlocks=15 skippedAnchorBlocks=11",
        "note": "Parsed from RFC HTML references/informative sections",
        "originalValue": [],
        "reviewRequired": true,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc7771/",
        "updated": "2026-10-14T18:50:51.323Z",
        "version": "extractDocs.js@commit:673dd514c094"
      },
      "normative": [
        "RFC2119",
        "RFC6378",
        "RFC6478",
        "RFC6870",
        "RFC7271",
        "RFC7324"
      ],
      "normative$meta": {
        "confidence": "high",
        "note": "Parsed from RFC HTML normative references sections",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc7771/",
        "updated": "2026-10-14T18:50:51.323Z",
        "version": "extractDocs.js@commit:673dd514c094"
      }
    },
    "resolvedHref": "https://www.rfc-editor.org/info/rfc7771/",
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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/rfc7771/",
      "updated": "2026-10-14T18:50:51.323Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "status": {
      "active": true,
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        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc7771/",
        "updated": "2026-10-14T18:50:51.323Z",
        "version": "extractDocs.js@commit:673dd514c094"
      },
      "amends": [
        "RFC6870"
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      "amends$meta": {
        "confidence": "high",
        "note": "Parsed from RFC index XML",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc7771/",
        "updated": "2026-10-14T18:50:51.323Z",
        "version": "extractDocs.js@commit:673dd514c094"
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      "errataExist": false,
      "errataExist$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/rfc7771/",
        "updated": "2026-10-14T18:50:51.323Z",
        "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/rfc7771/",
        "updated": "2026-10-14T18:50:51.323Z",
        "version": "extractDocs.js@commit:673dd514c094"
      },
      "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/rfc7771/",
        "updated": "2026-10-14T18:50:51.323Z",
        "version": "extractDocs.js@commit:673dd514c094"
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      "superseded": false,
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        "confidence": "high",
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        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc7771/",
        "updated": "2026-10-14T18:50:51.323Z",
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