PCEP Link State Abstraction
draft-chen-pce-h-connect-access-02
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PCE Working Group H. Chen
Internet-Draft Huawei Technologies
Intended status: Standards Track M. Toy
Expires: September 14, 2017 Verizon
X. Liu
Jabil
L. Liu
Fujitsu
Z. Li
China Mobile
March 13, 2017
PCEP Link State Abstraction
draft-chen-pce-h-connect-access-02
Abstract
This document presents extensions to the Path Computation Element
Communication Protocol (PCEP) for a child PCE to abstract its domain
information to its parent for supporting a hierarchical PCE system.
Status of This Memo
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This Internet-Draft will expire on September 14, 2017.
Copyright Notice
Copyright (c) 2017 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
Chen, et al. Expires September 14, 2017 [Page 1]
Internet-Draft H-Connect-Access March 2017
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Conventions Used in This Document . . . . . . . . . . . . . . 3
4. Connections and Accesses . . . . . . . . . . . . . . . . . . 3
4.1. Information on Inter-domain Link . . . . . . . . . . . . 4
4.2. Information on ABR . . . . . . . . . . . . . . . . . . . 5
4.3. Information on Access Point . . . . . . . . . . . . . . . 5
5. Extensions to PCEP . . . . . . . . . . . . . . . . . . . . . 5
5.1. Messages for Abstract Information . . . . . . . . . . . . 6
5.2. Procedures . . . . . . . . . . . . . . . . . . . . . . . 6
5.2.1. Child Procedures . . . . . . . . . . . . . . . . . . 6
5.2.2. Parent Procedures . . . . . . . . . . . . . . . . . . 9
6. Security Considerations . . . . . . . . . . . . . . . . . . . 10
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 10
8. Acknowledgement . . . . . . . . . . . . . . . . . . . . . . . 10
9. References . . . . . . . . . . . . . . . . . . . . . . . . . 10
9.1. Normative References . . . . . . . . . . . . . . . . . . 10
9.2. Informative References . . . . . . . . . . . . . . . . . 11
Appendix A. Message Encoding . . . . . . . . . . . . . . . . . . 12
A.1. Extension to Existing Message . . . . . . . . . . . . . . 12
A.1.1. TLVs . . . . . . . . . . . . . . . . . . . . . . . . 12
A.1.2. Sub-TLVs . . . . . . . . . . . . . . . . . . . . . . 13
A.2. New Message . . . . . . . . . . . . . . . . . . . . . . . 14
A.2.1. CONNECTION and ACCESS Object . . . . . . . . . . . . 14
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 16
1. Introduction
A hierarchical PCE architecture is described in RFC 6805, in which a
parent PCE maintains an abstract domain topology, which contains its
child domains (seen as vertices in the topology) and the connections
among them.
For a domain for which a child PCE is responsible, connections
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