stateful pce bandwidth scheduling
draft-xiong-pce-stateful-pce-bandwidth-scheduling-01

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PCE WG                                                       Quan. Xiong
Internet-Draft                                               Fangwei. Hu
Intended status: Standards Track                               Ran. Chen
Expires: June 8, 2017                                    ZTE Corporation
                                                        December 5, 2016

                   stateful pce bandwidth scheduling
        draft-xiong-pce-stateful-pce-bandwidth-scheduling-01.txt

Abstract

   The Path Computation Element Communication Protocol (PCEP) provides
   mechanisms for Path Computation Elements (PCEs) to perform path
   computations in response to Path Computation Clients (PCCs) requests.
   The stateful PCE extensions allow stateful control of Multi-Protocol
   Label Switching (MPLS) Traffic Engineering Label Switched Paths (TE
   LSPs) using PCEP.

   This document proposes a set of extensions for the stateful PCE, so
   as to enable bandwidth scheduling for LSP and adjust the bandwidth
   based on the customers' scheduled bandwidth requirement of a traffic
   service in a centralized network environment.  A bandwidth scheduled
   LSP can be adjusted to the new bandwidth at its starting time and
   adjusted back to the original bandwidth at its ending time.

Status of This Memo

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   This Internet-Draft will expire on June 8, 2017.

Copyright Notice

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

Xiong, et al.             Expires June 8, 2017                  [Page 1]
Internet-Draft            bandwidth scheduling             December 2016

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Requirements Language . . . . . . . . . . . . . . . . . . . .   3
     2.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Bandwidth scheduling Overview . . . . . . . . . . . . . . . .   4
   4.  New function to support Bandwidth scheduling  . . . . . . . .   4
   5.  Extensions to the PCEP  . . . . . . . . . . . . . . . . . . .   5
     5.1.  Support of Bandwidth Scheduling Capability  . . . . . . .   5
       5.1.1.  Stateful PCE Capability TLV . . . . . . . . . . . . .   5
     5.2.  Scheduled Bandwidth adjustment  . . . . . . . . . . . . .   5
       5.2.1.  SCHED-BW-ADJUST-ATTRIBUTE TLV . . . . . . . . . . . .   6
       5.2.2.  The PCReq Message . . . . . . . . . . . . . . . . . .   8
       5.2.3.  The PCRpt Message . . . . . . . . . . . . . . . . . .   8
       5.2.4.  The PCUpd Message . . . . . . . . . . . . . . . . . .   8
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .   9
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
     7.1.  PCEP TLV Type Indicators  . . . . . . . . . . . . . . . .   9
     7.2.  SCHED-BW-ADJUST-CAPABLITY . . . . . . . . . . . . . . . .   9
   8.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   9
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   9
     9.1.  Informative References  . . . . . . . . . . . . . . . . .  10
     9.2.  Normative References  . . . . . . . . . . . . . . . . . .  10
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  10

1.  Introduction

   [RFC5440] describes the Path Computation Element Protocol (PCEP)
   which is used between a Path Computation Element (PCE) and a Path
   Computation Client (PCC) (or other PCE) to enable computation of
   Multi-protocol Label Switching (MPLS) for Traffic Engineering Label
   Switched Path (TE LSP).[I-D.ietf-pce-stateful-pce] specifies a set of
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