Distribution of MPLS-TE Extended admin Group Using BGP-LS
draft-ietf-idr-eag-distribution-10

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Document Type Active Internet-Draft (idr WG)
Last updated 2019-11-21 (latest revision 2019-10-18)
Replaces draft-wang-idr-eag-distribution
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IDR Working Group                                                Z. Wang
Internet-Draft                                                     Q. Wu
Intended status: Standards Track                                  Huawei
Expires: May 24, 2020                                        J. Tantsura
                                                            Apstra, Inc.
                                                           K. Talaulikar
                                                           Cisco Systems
                                                       November 21, 2019

       Distribution of MPLS-TE Extended admin Group Using BGP-LS
                   draft-ietf-idr-eag-distribution-10

Abstract

   Administrative groups (commonly referred to as "colors" or "link
   colors") are link attributes that are advertised by link state
   protocols like IS-IS (Intermediate System to Intermediate System) and
   OSPF (Open Shortest Path First) and used for traffic engineering.
   These administrative groups have initially been defined as a fixed-
   length 32-bit bitmask.  As networks grew and more use-cases were
   introduced, the 32-bit length was found to be constraining and hence
   extended administrative groups were introduced in the link state
   protocols.  The 32-bit administrative groups are already advertised
   as link attributes in BGP-LS.  This document introduces extensions to
   BGP-LS (Border Gateway Protocol Link-State) for advertisement of the
   extended administrative groups.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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   This Internet-Draft will expire on May 24, 2020.

Wang, et al.              Expires May 24, 2020                  [Page 1]
Internet-Draft            Extended admin Group             November 2019

Copyright Notice

   Copyright (c) 2019 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (https://trustee.ietf.org/license-info) in effect on the date of
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   3
   2.  Advertising Extended Administrative Groups in BGP-LS  . . . .   3
   3.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   4
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .   4
   5.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .   4
   6.  Normative References  . . . . . . . . . . . . . . . . . . . .   4
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   5

1.  Introduction

   Administrative groups (commonly referred to as "colors" or "link
   colors") are link attributes that are advertised by link state
   protocols like IS-IS [RFC5305], OSPFv2 [RFC3630] and OSPFv3 [RFC5329]
   for traffic engineering use-cases.  The BGP-LS advertisement is
   encoded using the Administrative Group (color) TLV 1088 as defined in
   [RFC7752].

   These administrative groups are defined as a fixed-length 32-bit
   bitmask.  As networks grew and more use-cases were introduced, the
   32-bit length was found to be constraining and hence extended
   administrative groups (EAG) were introduced in the IS-IS and OSPFv2
   link state routing protocols [RFC7308].

   This document specifies extensions to BGP-LS for advertisement of the
   extended administrative groups.

Wang, et al.              Expires May 24, 2020                  [Page 2]
Internet-Draft            Extended admin Group             November 2019

1.1.  Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
   "OPTIONAL" in this document are to be interpreted as described in BCP
   14 [RFC2119] [RFC8174] when, and only when, they appear in all
   capitals, as shown here.
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