RFC9545 · Path Segment Identifier in MPLS-Based Segment Routing Networks

{
  "id": "RFC9545",
  "number": 9545,
  "title_en": "Path Segment Identifier in MPLS-Based Segment Routing Networks",
  "title_ru": "",
  "summary_ru": "",
  "purpose_ru": "",
  "use_ru": "",
  "full_translation_path": "",
  "full_translation_checked_at": "",
  "full_translation_source_sha256": "",
  "architect_note_ru": "",
  "topics_ru": [],
  "translation_state": "not_prepared",
  "verification_level": "not_prepared",
  "verification_level_ru": "Русская выжимка не подготовлена",
  "verification_note_ru": "",
  "abstract_en": "A Segment Routing (SR) path is identified by an SR segment list. A subset of segments from the segment list cannot be leveraged to distinguish one SR path from another as they may be partially congruent. SR path identification is a prerequisite for various use cases such as performance measurement and end-to-end 1+1 path protection. In an SR over MPLS (SR-MPLS) data plane, an egress node cannot determine on which SR path a packet traversed the network from the label stack because the segment identifiers are removed from the label stack as the packet transits the network. This document defines a Path Segment Identifier (PSID) to identify an SR path on the egress node of the path.",
  "authors": [
    "W. Cheng",
    "H. Li",
    "C. Li",
    "R. Gandhi",
    "R. Zigler"
  ],
  "organizations": [],
  "publication_date": "2024-02-01",
  "current_status": "PROPOSED STANDARD",
  "current_status_ru": "Предлагаемый стандарт",
  "publication_status": "PROPOSED STANDARD",
  "publication_status_ru": "Предлагаемый стандарт",
  "lifecycle": "active",
  "lifecycle_ru": "Действующий",
  "stream": "IETF",
  "stream_ru": "IETF",
  "area": "rtg",
  "area_ru": "Маршрутизация",
  "working_group": "spring",
  "source_draft": "draft-ietf-spring-mpls-path-segment-22",
  "page_count": 11,
  "doi": "10.17487/RFC9545",
  "keywords": [
    "Performance Measurement",
    "Bidirectional SR Path",
    "End-to-End Path Protection",
    "SR Path Segment",
    "Path Segment"
  ],
  "formats": [
    "HTML",
    "TXT",
    "PDF",
    "XML"
  ],
  "relations": {
    "obsoletes": [],
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    "updates": [],
    "updated_by": [],
    "is_also": [],
    "see_also": []
  },
  "links": {
    "info": "https://www.rfc-editor.org/info/rfc9545/",
    "html": "https://www.rfc-editor.org/rfc/rfc9545.html",
    "txt": "https://www.rfc-editor.org/rfc/rfc9545.txt",
    "datatracker": "https://datatracker.ietf.org/doc/rfc9545/"
  }
}