{
  "draft": "draft-ietf-mpls-in-ip-or-gre-08",
  "doc_id": "RFC4023",
  "title": "Encapsulating MPLS in IP or Generic Routing Encapsulation (GRE)",
  "authors": [
    "T. Worster",
    "Y. Rekhter",
    "E. Rosen, Ed."
  ],
  "format": [
    "TEXT",
    "HTML"
  ],
  "page_count": "14",
  "pub_status": "PROPOSED STANDARD",
  "status": "PROPOSED STANDARD",
  "source": "Multiprotocol Label Switching",
  "abstract": "Various applications of MPLS make use of label stacks with multiple entries.  In some cases, it is possible to replace the top label of the stack with an IP-based encapsulation, thereby enabling the application to run over networks that do not have MPLS enabled in their core routers.  This document specifies two IP-based encapsulations: MPLS-in-IP and MPLS-in-GRE (Generic Routing Encapsulation).  Each of these is applicable in some circumstances. [STANDARDS-TRACK]",
  "pub_date": "March 2005",
  "keywords": [],
  "obsoletes": [],
  "obsoleted_by": [],
  "updates": [],
  "updated_by": [
    "RFC5332"
  ],
  "see_also": [],
  "doi": "10.17487/RFC4023",
  "errata_url": null
}