PCEP Extensions for LSP scheduling with stateful PCE
draft-ietf-pce-stateful-pce-lsp-scheduling-02
PCE Working Group H. Chen, Ed.
Internet-Draft Y. Zhuang, Ed.
Intended status: Standards Track Q. Wu
Expires: September 3, 2018 D. Dhody, Ed.
Huawei
D. Ceccarelli
Ericsson
March 2, 2018
PCEP Extensions for LSP scheduling with stateful PCE
draft-ietf-pce-stateful-pce-lsp-scheduling-02
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 September 3, 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 . . . . . . . . . . . . . . . . . 8
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 . . . . . . . . . . . . . . . . . . . . 16
7. Security Considerations . . . . . . . . . . . . . . . . . . . 16
8. Manageability Consideration . . . . . . . . . . . . . . . . . 17
8.1. Control of Function and Policy . . . . . . . . . . . . . 17
8.2. Information and Data Models . . . . . . . . . . . . . . . 17
8.3. Liveness Detection and Monitoring . . . . . . . . . . . . 17
8.4. Verify Correct Operations . . . . . . . . . . . . . . . . 17
8.5. Requirements On Other Protocols . . . . . . . . . . . . . 17
8.6. Impact On Network Operations . . . . . . . . . . . . . . 17
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