Applicability of the Path Computation Element (PCE) to the Abstraction and Control of TE Networks (ACTN)
RFC 8637
Document | Type | RFC - Informational (July 2019; No errata) | |
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Authors | Dhruv Dhody , Young Lee , Daniele Ceccarelli | ||
Last updated | 2019-07-10 | ||
Replaces | draft-dhody-pce-applicability-actn | ||
Stream | Internent Engineering Task Force (IETF) | ||
Formats | plain text html pdf htmlized (tools) htmlized bibtex | ||
Reviews | |||
Stream | WG state | Submitted to IESG for Publication | |
Document shepherd | Adrian Farrel | ||
Shepherd write-up | Show (last changed 2019-03-12) | ||
IESG | IESG state | RFC 8637 (Informational) | |
Action Holders |
(None)
|
||
Consensus Boilerplate | Yes | ||
Telechat date | |||
Responsible AD | Deborah Brungard | ||
Send notices to | Adrian Farrel <adrian@olddog.co.uk> | ||
IANA | IANA review state | IANA OK - No Actions Needed | |
IANA action state | No IANA Actions |
Internet Engineering Task Force (IETF) D. Dhody Request for Comments: 8637 Huawei Technologies Category: Informational Y. Lee ISSN: 2070-1721 Futurewei Technologies D. Ceccarelli Ericsson July 2019 Applicability of the Path Computation Element (PCE) to the Abstraction and Control of TE Networks (ACTN) Abstract Abstraction and Control of TE Networks (ACTN) refers to the set of virtual network (VN) operations needed to orchestrate, control, and manage large-scale multidomain TE networks so as to facilitate network programmability, automation, efficient resource sharing, and end-to-end virtual service-aware connectivity and network function virtualization services. The Path Computation Element (PCE) is a component, application, or network node that is capable of computing a network path or route based on a network graph and applying computational constraints. The PCE serves requests from Path Computation Clients (PCCs) that communicate with it over a local API or using the Path Computation Element Communication Protocol (PCEP). This document examines the applicability of PCE to the ACTN framework. Status of This Memo This document is not an Internet Standards Track specification; it is published for informational purposes. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Not all documents approved by the IESG are candidates for any level of Internet Standard; see Section 2 of RFC 7841. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at https://www.rfc-editor.org/info/rfc8637. Dhody, et al. Informational [Page 1] RFC 8637 PCE-ACTN July 2019 Copyright Notice Copyright (c) 2019 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 (https://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2 2. Background Information . . . . . . . . . . . . . . . . . . . 3 2.1. Path Computation Element (PCE) . . . . . . . . . . . . . 3 2.1.1. Role of PCE in SDN . . . . . . . . . . . . . . . . . 4 2.1.2. PCE in Multidomain and Multilayer Deployments . . . . 4 2.1.3. Relationship to PCE-Based Central Control . . . . . . 5 2.2. Abstraction and Control of TE Networks (ACTN) . . . . . . 5 3. Architectural Considerations . . . . . . . . . . . . . . . . 7 3.1. Multidomain Coordination via Hierarchy . . . . . . . . . 7 3.2. Abstraction . . . . . . . . . . . . . . . . . . . . . . . 8 3.3. Customer Mapping . . . . . . . . . . . . . . . . . . . . 9 3.4. Virtual Service Coordination . . . . . . . . . . . . . . 10 4. Interface Considerations . . . . . . . . . . . . . . . . . . 10 5. Realizing ACTN with PCE (and PCEP) . . . . . . . . . . . . . 11 6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 14 7. Security Considerations . . . . . . . . . . . . . . . . . . . 15 8. References . . . . . . . . . . . . . . . . . . . . . . . . . 16 8.1. Normative References . . . . . . . . . . . . . . . . . . 16 8.2. Informative References . . . . . . . . . . . . . . . . . 16 Appendix A. Additional Information . . . . . . . . . . . . . . . 21 Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . 21 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 22 1. Introduction Abstraction and Control of TE Networks (ACTN) [RFC8453] refers to the set of virtual network (VN) operations needed to orchestrate, control, and manage large-scale multidomain TE networks so as to facilitate network programmability, automation, efficient resource sharing, and end-to-end virtual service-aware connectivity andShow full document text