{
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    "abstract": "Multi-Topology Routing (MTR) is a technology that enables service differentiation within an IP network. The Flexible Algorithm (FA) is another mechanism for creating a sub-topology within a topology using defined topology constraints and computation algorithms. In order to deploy Multipoint LDP (mLDP) in a network that supports MTR, FA, or other methods of signaling non-default IGP Algorithms (IPAs), mLDP is required to become topology and algorithm aware. This document specifies extensions to mLDP to support the use of MTR/IPAs such that, when building multipoint Label Switched Paths (LSPs), the LSPs can follow a particular topology and algorithm. This document updates RFC 7307 by allocating eight bits from a previously reserved field to be used as the \"IPA\" field.",
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    "authors": [
      {
        "name": "IJsbrand Wijnands"
      },
      {
        "name": "Mankamana Prasad Mishra"
      },
      {
        "name": "Syed Kamran Raza"
      },
      {
        "name": "Zhaohui (Jeffrey) Zhang"
      },
      {
        "name": "Arkadiy Gulko"
      }
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      "confidence": "high",
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      "confidence": "high",
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      "confidence": "high",
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    },
    "doi": "10.17487/RFC9658",
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      "confidence": "high",
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      "confidence": "high",
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      "source": "resolved",
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      "confidence": "high",
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      "confidence": "high",
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      "source": "parsed",
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      "confidence": "high",
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      "source": "parsed",
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        "RFC4915",
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        "RFC6388",
        "RFC6425",
        "RFC6513",
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        "RFC7307",
        "RFC8029",
        "RFC8174",
        "RFC9350"
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        "confidence": "high",
        "note": "Parsed from RFC HTML normative references sections",
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        "source": "parsed",
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      "sourceUrl": "https://www.rfc-editor.org/info/rfc9658/",
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        "confidence": "high",
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        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc9658/",
        "updated": "2026-10-21T16:58:31.792Z",
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        "confidence": "high",
        "note": "Parsed from RFC index XML",
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        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc9658/",
        "updated": "2026-10-21T16:58:31.792Z",
        "version": "extractDocs.js@commit:2c1e5418e9d0"
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        "confidence": "high",
        "note": "Derived from presence of errata links on RFC/Datatracker pages",
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        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc9658/",
        "updated": "2026-10-21T16:58:31.792Z",
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        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc9658/",
        "updated": "2026-10-21T16:58:31.792Z",
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        "confidence": "high",
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        "source": "parsed",
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        "confidence": "high",
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        "source": "resolved",
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