LSP-DB Synchronization between Stateful PCEs
draft-palle-pce-stateful-pce-lspdb-sync-03

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Last updated 2014-07-21
Replaced by draft-dhody-pce-stateful-pce-lspdb-realtime-sync
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PCE Working Group                                               U. Palle
Internet-Draft                                                  D. Dhody
Intended status: Standards Track                                X. Zhang
Expires: January 22, 2015                            Huawei Technologies
                                                           July 21, 2014

              LSP-DB Synchronization between Stateful PCEs
               draft-palle-pce-stateful-pce-lspdb-sync-03

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.

   [STATEFUL-PCE] specifies a set of extensions to PCEP to enable
   stateful control of MPLS-TE and GMPLS Label Switched Paths (LSPs) via
   PCEP and maintaining of these LSPs at the stateful PCE.  This
   document describes the mechanisms of LSP Database (LSP-DB)
   synchronization between stateful PCEs.

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   This document is subject to BCP 78 and the IETF Trust's Legal
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Palle, et al.           Expires January 22, 2015                [Page 1]
Internet-Draft                 LSPDB-SYNC                      July 2014

   carefully, as they describe your rights and restrictions with respect
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Motivation and Use  . . . . . . . . . . . . . . . . . . . . .   4
   4.  Functions to Support LSP-DB Synchronization . . . . . . . . .   4
   5.  Architectural Overview  . . . . . . . . . . . . . . . . . . .   5
     5.1.  LSP-DB Synchronization between Primary and Backup
           Stateful PCEs . . . . . . . . . . . . . . . . . . . . . .   5
     5.2.  LSP-DB Synchronization between Load-Balanced Stateful
           PCEs  . . . . . . . . . . . . . . . . . . . . . . . . . .   7
     5.3.  Other Considerations  . . . . . . . . . . . . . . . . . .   8
   6.  PCEP Messages . . . . . . . . . . . . . . . . . . . . . . . .   8
     6.1.  The PCRpt Message . . . . . . . . . . . . . . . . . . . .   8
     6.2.  The PCUpd Message . . . . . . . . . . . . . . . . . . . .   9
   7.  TLVs  . . . . . . . . . . . . . . . . . . . . . . . . . . . .   9
     7.1.  Stateful PCE Capability TLV . . . . . . . . . . . . . . .   9
     7.2.  PCE Redundancy Group Identifier TLV . . . . . . . . . . .   9
     7.3.  PCE-CAP-FLAGS sub-TLV . . . . . . . . . . . . . . . . . .  10
   8.  Other Considerations  . . . . . . . . . . . . . . . . . . . .  10
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .  10
   10. Manageability Considerations  . . . . . . . . . . . . . . . .  10
     10.1.  Control of Function and Policy . . . . . . . . . . . . .  10
     10.2.  Information and Data Models  . . . . . . . . . . . . . .  10
     10.3.  Liveness Detection and Monitoring  . . . . . . . . . . .  11
     10.4.  Verify Correct Operations  . . . . . . . . . . . . . . .  11
     10.5.  Requirements On Other Protocols  . . . . . . . . . . . .  11
     10.6.  Impact On Network Operations . . . . . . . . . . . . . .  11
   11. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  11
     11.1.  STATEFUL-PCE-CAPABILITY TLV  . . . . . . . . . . . . . .  11
     11.2.  PCE-CAP-FLAGS sub-TLV  . . . . . . . . . . . . . . . . .  11
   12. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  12
   13. References  . . . . . . . . . . . . . . . . . . . . . . . . .  12
     13.1.  Normative References . . . . . . . . . . . . . . . . . .  12
     13.2.  Informative References . . . . . . . . . . . . . . . . .  12
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