LSP-DB Synchronization between Stateful PCEs
draft-palle-pce-stateful-pce-lspdb-sync-01

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Last updated 2013-07-28
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 30, 2014                            Huawei Technologies
                                                           July 29, 2013

              LSP-DB Synchronization between Stateful PCEs
               draft-palle-pce-stateful-pce-lspdb-sync-01

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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Palle, et al.           Expires January 30, 2014                [Page 1]
Internet-Draft                 LSPDB-SYNC                      July 2013

   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 & Use . . . . . . . . . . . . . . . . . . . . . . .  3
   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 . . . . . . . . . . . . . . . . . . . . . . . . . . .  6
     5.3.  Other Considerations . . . . . . . . . . . . . . . . . . .  8
   6.  PCEP Messages  . . . . . . . . . . . . . . . . . . . . . . . .  8
     6.1.  The PCRpt Message  . . . . . . . . . . . . . . . . . . . .  8
     6.2.  The PCUpd Message  . . . . . . . . . . . . . . . . . . . .  8
   7.  TLVs . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  8
     7.1.  Stateful PCE Capability TLV  . . . . . . . . . . . . . . .  8
     7.2.  PCE Redundancy Group Identifier TLV  . . . . . . . . . . .  9
     7.3.  PCE-CAP-FLAGS sub-TLV  . . . . . . . . . . . . . . . . . .  9
   8.  Security Considerations  . . . . . . . . . . . . . . . . . . .  9
   9.  Manageability Considerations . . . . . . . . . . . . . . . . .  9
     9.1.  Control of Function and Policy . . . . . . . . . . . . . .  9
     9.2.  Information and Data Models  . . . . . . . . . . . . . . . 10
     9.3.  Liveness Detection and Monitoring  . . . . . . . . . . . . 10
     9.4.  Verify Correct Operations  . . . . . . . . . . . . . . . . 10
     9.5.  Requirements On Other Protocols  . . . . . . . . . . . . . 10
     9.6.  Impact On Network Operations . . . . . . . . . . . . . . . 10
   10. IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 10
     10.1. STATEFUL-PCE-CAPABILITY TLV  . . . . . . . . . . . . . . . 10
     10.2. PCE-CAP-FLAGS sub-TLV  . . . . . . . . . . . . . . . . . . 10
   11. Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . 11
   12. References . . . . . . . . . . . . . . . . . . . . . . . . . . 11
     12.1. Normative References . . . . . . . . . . . . . . . . . . . 11
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