PCEP Extensions for LSP scheduling with stateful PCE
draft-zhuang-pce-stateful-pce-lsp-scheduling-01

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PCE Working Group                                              Y. Zhuang
Internet-Draft                                                     Q. Wu
Intended status: Standards Track                                D. Dhody
Expires: March 31, 2016                                           Huawei
                                                           D. Ceccarelli
                                                                Ericsson
                                                      September 28, 2015

          PCEP Extensions for LSP scheduling with stateful PCE
            draft-zhuang-pce-stateful-pce-lsp-scheduling-01

Abstract

   This document proposes a set of extensions needed to the stateful
   Path Computation Element (PCE) communication Protocol (PCEP), so as
   to enable Labeled Switched Path (LSP) scheduling for path computation
   and LSP setup/deletion based on the actual network resource usage
   duration of a traffic service in a centralized network environment.
   A scheduled LSP can be setup at the its starting time and deleted
   after its usage duration such that LSPs for the other traffic
   services can take over these network resources beyond that period.

Status of This Memo

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   This Internet-Draft will expire on March 31, 2016.

Copyright Notice

   Copyright (c) 2015 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
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   (http://trustee.ietf.org/license-info) in effect on the date of

Zhuang, et al.           Expires March 31, 2016                 [Page 1]
Internet-Draft               LSP Scheduling               September 2015

   publication of this document.  Please review these documents
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Conventions used in this document . . . . . . . . . . . . . .   3
     2.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Motivation and Objectives . . . . . . . . . . . . . . . . . .   4
   4.  Architecture Overview . . . . . . . . . . . . . . . . . . . .   5
     4.1.  LSP scheduling Overview . . . . . . . . . . . . . . . . .   5
     4.2.  Support of LSP Scheduling . . . . . . . . . . . . . . . .   6
       4.2.1.  Stateful PCE Capability TLV . . . . . . . . . . . . .   6
     4.3.  Scheduled LSP creation  . . . . . . . . . . . . . . . . .   7
       4.3.1.  The PCReq message and PCRpt Message . . . . . . . . .   8
       4.3.2.  The PCRep Message . . . . . . . . . . . . . . . . . .   8
       4.3.3.  The PCUpd Message . . . . . . . . . . . . . . . . . .   9
       4.3.4.  LSP Object  . . . . . . . . . . . . . . . . . . . . .   9
     4.4.  Scheduled LSP information synchronization . . . . . . . .  10
     4.5.  Scheduled LSP activation and deletion . . . . . . . . . .  11
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .  11
   6.  Manageability Consideration . . . . . . . . . . . . . . . . .  11
     6.1.  Control of Function and Policy  . . . . . . . . . . . . .  11
     6.2.  Information and Data Models . . . . . . . . . . . . . . .  12
     6.3.  Liveness Detection and Monitoring . . . . . . . . . . . .  12
     6.4.  Verify Correct Operations . . . . . . . . . . . . . . . .  12
     6.5.  Requirements On Other Protocols . . . . . . . . . . . . .  12
     6.6.  Impact On Network Operations  . . . . . . . . . . . . . .  12
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  12
     7.1.  PCEP TLV Type Indicators  . . . . . . . . . . . . . . . .  12
     7.2.  LSP-SCHEDULING-CAPABLITY  . . . . . . . . . . . . . . . .  12
   8.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  13
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  13
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .  13
     9.2.  Informative References  . . . . . . . . . . . . . . . . .  13
   Appendix A.  Contributor Addresses  . . . . . . . . . . . . . . .  14