PCEP Extensions for LSP scheduling with stateful PCE
draft-ietf-pce-stateful-pce-lsp-scheduling-03

Document Type Active Internet-Draft (pce WG)
Last updated 2018-06-18
Replaces draft-zhuang-pce-stateful-pce-lsp-scheduling
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PCE Working Group                                           H. Chen, Ed.
Internet-Draft                                            Y. Zhuang, Ed.
Intended status: Standards Track                                   Q. Wu
Expires: December 20, 2018                                 D. Dhody, Ed.
                                                                  Huawei
                                                           D. Ceccarelli
                                                                Ericsson
                                                           June 18, 2018

          PCEP Extensions for LSP scheduling with stateful PCE
             draft-ietf-pce-stateful-pce-lsp-scheduling-03

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 as
   stated in [I-D.ietf-teas-scheduled-resources].

Status of This Memo

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   This Internet-Draft will expire on December 20, 2018.

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Chen, et al.            Expires December 20, 2018               [Page 1]
Internet-Draft               LSP Scheduling                    June 2018

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Conventions used in this document . . . . . . . . . . . . . .   4
     2.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Motivation and Objectives . . . . . . . . . . . . . . . . . .   5
   4.  Architecture Overview . . . . . . . . . . . . . . . . . . . .   5
     4.1.  LSP scheduling Overview . . . . . . . . . . . . . . . . .   5
     4.2.  Support of LSP Scheduling . . . . . . . . . . . . . . . .   7
       4.2.1.  LSP Scheduling  . . . . . . . . . . . . . . . . . . .   7
       4.2.2.  Periodical LSP Scheduling . . . . . . . . . . . . . .   7
     4.3.  Scheduled LSP creation  . . . . . . . . . . . . . . . . .   9
     4.4.  Scheduled LSP Modifications . . . . . . . . . . . . . . .  10
     4.5.  Scheduled LSP activation and deletion . . . . . . . . . .  10
   5.  PCEP Objects and TLVs . . . . . . . . . . . . . . . . . . . .  11
     5.1.  Stateful PCE Capability TLV . . . . . . . . . . . . . . .  11
     5.2.  LSP Object  . . . . . . . . . . . . . . . . . . . . . . .  12
       5.2.1.  SCHED-LSP-ATTRIBUTE TLV . . . . . . . . . . . . . . .  12
       5.2.2.  SCHED-PD-LSP-ATTRIBUTE TLV  . . . . . . . . . . . . .  14
   6.  The PCEP Messages . . . . . . . . . . . . . . . . . . . . . .  15
     6.1.  The PCRpt Message . . . . . . . . . . . . . . . . . . . .  15
     6.2.  The PCUpd Message . . . . . . . . . . . . . . . . . . . .  15
     6.3.  The PCInitiate Message  . . . . . . . . . . . . . . . . .  16
     6.4.  The PCReq message . . . . . . . . . . . . . . . . . . . .  16
     6.5.  The PCRep Message . . . . . . . . . . . . . . . . . . . .  16
     6.6.  The PCErr Message . . . . . . . . . . . . . . . . . . . .  17
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  17
   8.  Manageability Consideration . . . . . . . . . . . . . . . . .  18
     8.1.  Control of Function and Policy  . . . . . . . . . . . . .  18
     8.2.  Information and Data Models . . . . . . . . . . . . . . .  18
     8.3.  Liveness Detection and Monitoring . . . . . . . . . . . .  18
     8.4.  Verify Correct Operations . . . . . . . . . . . . . . . .  18
     8.5.  Requirements On Other Protocols . . . . . . . . . . . . .  18
     8.6.  Impact On Network Operations  . . . . . . . . . . . . . .  18
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