Network Working Group Xian Zhang
Internet-Draft Young Lee
Intended status: Standards Track Fatai Zhang
Huawei
Ramon Casellas
CTTC
Oscar Gonzalez de Dios
Telefonica I+D
Expires: August 21, 2013 February 22, 2013
Path Computation Element (PCE) Protocol Extension for Stateful PCE
Usage in GMPLS Networks
draft-zhang-pce-pcep-stateful-pce-gmpls-02.txt
Status of this Memo
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This Internet-Draft will expire on August 21, 2013.
Zhang Expires August 2013 [Page 1]
draft-zhang-pce-pcep-stateful-pce-gmpls-02.txt February 2013
Abstract
The Path Computation Element (PCE) facilitates Traffic Engineering
(TE) based path calculation in large, multi-domain, multi-region, or
multi-layer networks. [Stateful-PCE] provides the fundamental PCEP
extensions needed to support stateful PCE functions, without
specifying the technology-specific extensions. This memo provides
extensions required for PCE communication protocol (PCEP) so as to
enable the usage of a stateful PCE capability in GMPLS networks.
Conventions used in this document
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in RFC-2119 [RFC2119].
Table of Contents
Table of Contents .............................................. 2
1. Introduction ................................................ 3
2. PCEP Extensions ............................................. 3
2.1. Overview of Requirements................................ 3
2.2. Stateful PCE Capability Advertisement and Negotiation....4
2.2.1. PCE Capability Negotiation/Advertisement in Multi-layer
Networks ................................................. 4
2.3. LSP Delegation in GMPLS Networks ........................5
2.4. LSP Synchronization in GMPLS networks ...................6
2.5. Modification of Existing PCEP Messages and Procedures....8
2.5.1. Use cases ......................................... 8
2.5.2. Modification for LSP Re-optimization ...............9
2.5.3. Modification for Route Exclusion ...................9
2.6. Additional Error Type and Error Values Defined..........10
3. IANA Considerations ........................................ 10
4. Manageability Considerations................................ 10
4.1. Requirements on Other Protocols and Functional Components11
5. Security Considerations..................................... 11
6. Acknowledgement ............................................ 11
7. References ................................................. 11
7.1. Normative References................................... 11
7.2. Informative References................................. 12
8. Contributors' Address....................................... 12
Authors' Addresses ............................................ 13
Zhang Expires August 2013 [Page 2]
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