{
  "draft": "draft-ietf-mpls-rfc8287-len-clarification-04",
  "doc_id": "RFC8690",
  "title": "Clarification of Segment ID Sub-TLV Length for RFC 8287",
  "authors": [
    "N. Nainar",
    "C. Pignataro",
    "F. Iqbal",
    "A. Vainshtein"
  ],
  "format": [
    "XML",
    "TEXT",
    "HTML",
    "PDF"
  ],
  "page_count": "7",
  "pub_status": "PROPOSED STANDARD",
  "status": "PROPOSED STANDARD",
  "source": "Multiprotocol Label Switching",
  "abstract": "RFC 8287 defines the extensions to perform LSP Ping and Traceroute for Segment Routing IGP-Prefix and IGP-Adjacency Segment Identifiers (SIDs) with the MPLS data plane. RFC 8287 proposes three Target Forwarding Equivalence Class (FEC) Stack sub-TLVs. While RFC 8287 defines the format and procedure to handle those sub-TLVs, it does not sufficiently clarify how the length of the Segment ID sub-TLVs should be computed to be included in the Length field of the sub-TLVs. This ambiguity has resulted in interoperability issues.\n\n This document updates RFC 8287 by clarifying the length of each of the Segment ID sub-TLVs defined in RFC 8287.",
  "pub_date": "December 2019",
  "keywords": [
    "mpls"
  ],
  "obsoletes": [],
  "obsoleted_by": [],
  "updates": [
    "RFC8287"
  ],
  "updated_by": [],
  "see_also": [],
  "doi": "10.17487/RFC8690",
  "errata_url": null
}