Distribution of Traffic Engineering Extended Admin Groups using BGP-LS
draft-ietf-idr-eag-distribution-12

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Last updated 2020-05-17
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: November 18, 2020                                   J. Tantsura
                                                            Apstra, Inc.
                                                           K. Talaulikar
                                                           Cisco Systems
                                                            May 17, 2020

 Distribution of Traffic Engineering Extended Admin Groups using BGP-LS
                   draft-ietf-idr-eag-distribution-12

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 (Border Gateway Protocol Link-State).
   This document defines extensions to BGP-LS 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
   Task Force (IETF).  Note that other groups may also distribute
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   This Internet-Draft will expire on November 18, 2020.

Wang, et al.            Expires November 18, 2020               [Page 1]
Internet-Draft            Extended admin Group                  May 2020

Copyright Notice

   Copyright (c) 2020 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
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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 November 18, 2020               [Page 2]
Internet-Draft            Extended admin Group                  May 2020

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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