IS-IS Traffic Engineering (TE) Metric Extensions
draft-ietf-lsr-isis-rfc7810bis-00

Document Type Active Internet-Draft (lsr WG)
Last updated 2018-06-19 (latest revision 2018-04-25)
Stream IETF
Intended RFC status Proposed Standard
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Stream WG state In WG Last Call
Document shepherd Ketan Talaulikar
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Send notices to Ketan Talaulikar <ketant@cisco.com>
Link State Routing                                      L. Ginsberg, Ed.
Internet-Draft                                       Cisco Systems, Inc.
Obsoletes: 7810 (if approved)                            S. Previdi, Ed.
Intended status: Standards Track                                  Huawei
Expires: October 27, 2018                                   S. Giacolone
                                                               Microsoft
                                                                 D. Ward
                                                     Cisco Systems, Inc.
                                                                J. Drake
                                                        Juniper Networks
                                                                   Q. Wu
                                                                  Huawei
                                                          April 25, 2018

            IS-IS Traffic Engineering (TE) Metric Extensions
                   draft-ietf-lsr-isis-rfc7810bis-00

Abstract

   In certain networks, such as, but not limited to, financial
   information networks (e.g., stock market data providers), network-
   performance criteria (e.g., latency) are becoming as critical to
   data-path selection as other metrics.

   This document describes extensions to IS-IS Traffic Engineering
   Extensions (RFC 5305) such that network-performance information can
   be distributed and collected in a scalable fashion.  The information
   distributed using IS-IS TE Metric Extensions can then be used to make
   path-selection decisions based on network performance.

   Note that this document only covers the mechanisms with which
   network-performance information is distributed.  The mechanisms for
   measuring network performance or acting on that information, once
   distributed, are outside the scope of this document.

   This document obsoletes RFC 7810.

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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Internet-Draft         IS-IS TE Metric Extensions             April 2018

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
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on October 27, 2018.

Copyright Notice

   Copyright (c) 2018 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
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  TE Metric Extensions to IS-IS . . . . . . . . . . . . . . . .   4
   3.  Interface and Neighbor Addresses  . . . . . . . . . . . . . .   5
   4.  Sub-TLV Details . . . . . . . . . . . . . . . . . . . . . . .   6
     4.1.  Unidirectional Link Delay Sub-TLV . . . . . . . . . . . .   6
     4.2.  Min/Max Unidirectional Link Delay Sub-TLV . . . . . . . .   6
     4.3.  Unidirectional Delay Variation Sub-TLV  . . . . . . . . .   8
     4.4.  Unidirectional Link Loss Sub-TLV  . . . . . . . . . . . .   8
     4.5.  Unidirectional Residual Bandwidth Sub-TLV . . . . . . . .   9
     4.6.  Unidirectional Available Bandwidth Sub-TLV  . . . . . . .  10
     4.7.  Unidirectional Utilized Bandwidth Sub-TLV . . . . . . . .  11
   5.  Announcement Thresholds and Filters . . . . . . . . . . . . .  12
   6.  Announcement Suppression  . . . . . . . . . . . . . . . . . .  13
   7.  Network Stability and Announcement Periodicity  . . . . . . .  13

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