{
  "number": 8491,
  "title": "Signaling Maximum SID Depth (MSD) Using IS-IS",
  "authors": [
    "J. Tantsura",
    "U. Chunduri",
    "S. Aldrin",
    "L. Ginsberg"
  ],
  "published": "2018-11",
  "status": "Proposed Standard",
  "stream": "IETF",
  "area": "rtg",
  "working_group": "lsr",
  "pages": 10,
  "formats": [
    "TXT",
    "HTML"
  ],
  "abstract": "This document defines a way for an Intermediate System to Intermediate System (IS-IS) router to advertise multiple types of supported Maximum SID Depths (MSDs) at node and/or link granularity. Such advertisements allow entities (e.g., centralized controllers) to determine whether a particular Segment ID (SID) stack can be supported in a given network. This document only defines one type of MSD: Base MPLS Imposition. However, it defines an encoding that can support other MSD types. This document focuses on MSD use in a network that is Segment Routing (SR) enabled, but MSD may also be useful when SR is not enabled.",
  "keywords": [
    "BGP-LS",
    "SID",
    "MSD",
    "IS-IS"
  ],
  "draft": "draft-ietf-isis-segment-routing-msd-19",
  "doi": "10.17487/RFC8491",
  "urls": {
    "html": "https://rfc.dk/rfc8491/",
    "text": "https://rfc.dk/rfc8491.txt",
    "rfc_editor": "https://www.rfc-editor.org/rfc/rfc8491",
    "datatracker": "https://datatracker.ietf.org/doc/rfc8491/"
  },
  "text_modified": "2018-11-14T20:34:17Z"
}