{
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  "docId": "RFC4972",
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    "abstract": "The setup of a full mesh of Multi-Protocol Label Switching (MPLS) Traffic Engineering (TE) Label Switched Paths (LSP) among a set of Label Switch Routers (LSR) is a common deployment scenario of MPLS Traffic Engineering either for bandwidth optimization, bandwidth guarantees or fast rerouting with MPLS Fast Reroute. Such deployment may require the configuration of a potentially large number of TE LSPs (on the order of the square of the number of LSRs). This document specifies Interior Gateway Protocol (IGP) routing extensions for Intermediate System-to-Intermediate System (IS-IS) and Open Shortest Path First (OSPF) so as to provide an automatic discovery of the set of LSRs members of a mesh in order to automate the creation of such mesh of TE LSPs. [STANDARDS-TRACK]",
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    "authors": [
      {
        "name": "JP Vasseur"
      },
      {
        "name": "Jean-Louis Le Roux"
      },
      {
        "name": "Seisho Yasukawa"
      },
      {
        "name": "Stefano Previdi"
      },
      {
        "name": "Peter Psenak"
      },
      {
        "name": "Paul Mabbey"
      }
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    "docTitle": "Routing Extensions for Discovery of Multiprotocol (MPLS) Label Switch Router (LSR) Traffic Engineering (TE) Mesh Membership",
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    "doi": "10.17487/RFC4972",
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    "href": "https://doi.org/10.17487/RFC4972",
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      "MPLS-TE",
      "LSP",
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      "IS-IS",
      "OSPF"
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      "confidence": "high",
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      "source": "parsed",
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    "pages": "15",
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    },
    "publicationDate": "2007-07-01",
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    "references": {
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        "confidence": "medium",
        "flag": "MIXED_REF_LAYOUT_RISK anchored=9 proseBlocks=12 skippedAnchorBlocks=10",
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      },
      "normative": [
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        "RFC4970",
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        "RFC2740"
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      "normative$meta": {
        "confidence": "high",
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        "note": "Derived from supersession relationship fields",
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        "confidence": "high",
        "note": "Derived from supersession relationship fields",
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        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4972/",
        "updated": "2026-10-16T20:42:21.139Z",
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