Extensions to OSPF for Temporal LSP
draft-chen-ospf-tts-01

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Internet Engineering Task Force                                  H. Chen
Internet-Draft                                       Huawei Technologies
Intended status: Standards Track                                  M. Toy
Expires: July 2, 2017                                            Verizon
                                                                  V. Liu
                                                            China Mobile
                                                                  L. Liu
                                                                 Fijitsu
                                                       December 29, 2016

                  Extensions to OSPF for Temporal LSP
                       draft-chen-ospf-tts-01.txt

Abstract

   This document specifies extensions to OSPF for distributing Traffic
   Engineering (TE) information on a link in a sequence of time
   intervals.

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   This Internet-Draft will expire on July 2, 2017.

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   Copyright (c) 2016 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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Internet-Draft            OSPF for Temporal LSP            December 2016

   include Simplified BSD License text as described in Section 4.e of
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Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . . . .  3
   3.  Conventions Used in This Document  . . . . . . . . . . . . . .  3
   4.  Representation of TE Information . . . . . . . . . . . . . . .  4
     4.1.  TE Information in Absolute Time  . . . . . . . . . . . . .  4
     4.2.  TE Information in Relative Time  . . . . . . . . . . . . .  5
   5.  Extensions to OSPF . . . . . . . . . . . . . . . . . . . . . .  6
     5.1.  TE LSA . . . . . . . . . . . . . . . . . . . . . . . . . .  6
     5.2.  TTS Link TLV . . . . . . . . . . . . . . . . . . . . . . .  7
   6.  Security Considerations  . . . . . . . . . . . . . . . . . . . 10
   7.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 10
   8.  Acknowledgement  . . . . . . . . . . . . . . . . . . . . . . . 10
   9.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 10
     9.1.  Normative References . . . . . . . . . . . . . . . . . . . 10
     9.2.  Informative References . . . . . . . . . . . . . . . . . . 10
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 11

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1.  Introduction

   Once an existing multiprotocol label switching (MPLS) traffic
   engineering (TE) label switched path (LSP) is set up, it is assumed
   to carry traffic forever until it is down.  When an MPLS TE LSP
   tunnel is up, it is assumed that the LSP consumes its reserved
   network resources forever even though the LSP may only use network
   resources during some period of time.  As a result, the network
   resources are not used efficiently.  Moreover, a tunnel service can
   not be reserved or booked in advance for a period of time.

   This document specifies extensions to OSPF for supporting the setup
   of an MPLS TE LSP in a period of time called a time interval or a
   sequence of time intervals.  It is assumed that the LSP carries
   traffic during this time interval or each of these time intervals.
   Thus the network resources are efficiently used.  More importantly,
   some new services can be provided.  For example, a consumer can book
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