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OSPF Traffic Engineering (TE) Metric Extensions
draft-ietf-ospf-te-metric-extensions-08

Network Working Group                                      S. Giacalone
Internet Draft                                             Unaffiliated
Intended status: Proposed Standard
Expires: June 2015                                              D. Ward
                                                          Cisco Systems

                                                               J. Drake
                                                       Juniper Networks

                                                                A. Atlas
                                                        Juniper Networks

                                                              S. Previdi
                                                           Cisco Systems

                                                      December 01, 2014

              OSPF Traffic Engineering (TE) Metric Extensions
                draft-ietf-ospf-te-metric-extensions-08.txt

   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 RFC 3630 'Traffic Engineering
   (TE) Extensions to OSPF Version 2' such that network performance
   information can be distributed and collected in a scalable fashion.
   The information distributed using OSPF 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.

Status of this Memo

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

Giacalone, et al         Expires June 1, 2015                  [Page 1]
Internet-Draft        OSPF TE Metric Extensions           December 2014

   Internet-Drafts are working documents of the Internet Engineering
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   This Internet-Draft will expire on June 1, 2015.

Copyright Notice

   Copyright (c) 2014 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
   (http://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...................................................4
   2. Conventions used in this document..............................5
   3. TE Metric Extensions to OSPF TE................................5
   4. Sub-TLV Details................................................7
      4.1. Unidirectional Link Delay Sub-TLV.........................7
         4.1.1. Type.................................................7
         4.1.2. Length...............................................7

Giacalone, et al         Expires June 1, 2015                  [Page 2]
Internet-Draft        OSPF TE Metric Extensions           December 2014

         4.1.3. A bit................................................7
         4.1.4. Reserved.............................................7
         4.1.5. Delay Value..........................................8
      4.2. Min/Max Unidirectional Link Delay Sub-TLV.................8
         4.2.1. Type.................................................8
         4.2.2. Length...............................................8
         4.2.3. A bit................................................8
         4.2.4. Reserved.............................................9
         4.2.5. Min Delay............................................9

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