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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document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
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Zhuang, et al. Expires March 31, 2016 [Page 1]
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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
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