Dynamic Service Negotiation: The Connectivity Provisioning Negotiation Protocol (CPNP)
RFC 8921
| Document | Type |
RFC - Informational
(October 2020; No errata)
Was draft-boucadair-connectivity-provisioning-protocol (individual)
|
|
|---|---|---|---|
| Authors | Mohamed Boucadair , Christian Jacquenet , Dacheng Zhang , Panos Georgatsos | ||
| Last updated | 2020-10-21 | ||
| Stream | ISE | ||
| Formats | plain text html xml pdf htmlized bibtex | ||
| IETF conflict review | conflict-review-boucadair-connectivity-provisioning-protocol | ||
| Stream | ISE state | Published RFC | |
| Consensus Boilerplate | Unknown | ||
| Document shepherd | Adrian Farrel | ||
| Shepherd write-up | Show (last changed 2020-03-24) | ||
| IESG | IESG state | RFC 8921 (Informational) | |
| Telechat date | |||
| Responsible AD | (None) | ||
| Send notices to | Adrian Farrel <rfc-ise@rfc-editor.org> | ||
| IANA | IANA review state | Version Changed - Review Needed | |
| IANA action state | No IANA Actions | ||
Independent Submission M. Boucadair, Ed.
Request for Comments: 8921 C. Jacquenet
Category: Informational Orange
ISSN: 2070-1721 D. Zhang
Huawei Technologies
P. Georgatsos
CERTH
October 2020
Dynamic Service Negotiation: The Connectivity Provisioning Negotiation
Protocol (CPNP)
Abstract
This document defines the Connectivity Provisioning Negotiation
Protocol (CPNP), which is designed to facilitate the dynamic
negotiation of service parameters.
CPNP is a generic protocol that can be used for various negotiation
purposes that include (but are not necessarily limited to)
connectivity provisioning services, storage facilities, Content
Delivery Networks, etc.
Status of This Memo
This document is not an Internet Standards Track specification; it is
published for informational purposes.
This is a contribution to the RFC Series, independently of any other
RFC stream. The RFC Editor has chosen to publish this document at
its discretion and makes no statement about its value for
implementation or deployment. Documents approved for publication by
the RFC Editor are not 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/rfc8921.
Copyright Notice
Copyright (c) 2020 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.
Table of Contents
1. Introduction
2. Terminology
3. CPNP Functional Elements
4. Order Processing Models
5. Sample Use Cases
6. CPNP Deployment Models
7. CPNP Negotiation Model
8. Protocol Overview
8.1. Client/Server Communication
8.2. Policy Configuration on the CPNP Server
8.3. CPNP Session Entries
8.4. CPNP Transactions
8.5. CPNP Timers
8.6. CPNP Operations
8.7. Connectivity Provisioning Documents
8.8. Child PQOs
8.9. Multi-Segment Service
8.10. Negotiating with Multiple CPNP Servers
8.11. State Management
8.11.1. On the Client Side
8.11.2. On the Server Side
9. CPNP Objects
9.1. Attributes
9.1.1. CUSTOMER_ORDER_IDENTIFIER
9.1.2. PROVIDER_ORDER_IDENTIFIER
9.1.3. TRANSACTION_ID
9.1.4. SEQUENCE_NUMBER
9.1.5. NONCE
9.1.6. EXPECTED_RESPONSE_TIME
9.1.7. EXPECTED_OFFER_TIME
9.1.8. VALIDITY_OFFER_TIME
9.1.9. SERVICE_DESCRIPTION
9.1.10. CPNP Information Elements
9.2. Operation Messages
9.2.1. QUOTATION
9.2.2. PROCESSING
9.2.3. OFFER
9.2.4. ACCEPT
9.2.5. DECLINE
9.2.6. ACK
9.2.7. CANCEL
9.2.8. WITHDRAW
9.2.9. UPDATE
9.2.10. FAIL
9.2.11. ACTIVATE
10. CPNP Message Validation
10.1. On the Client Side
10.2. On the Server Side
11. Theory of Operation
11.1. Client Behavior
11.1.1. Order Negotiation Cycle
11.1.2. Order Withdrawal Cycle
11.1.3. Order Update Cycle
11.2. Server Behavior
11.2.1. Order Processing
11.2.2. Order Withdrawal
11.2.3. Order Update
11.3. Sequence Numbers
11.4. Message Retransmission
12. Some Operational Guidelines
12.1. CPNP Server Logging
12.2. Business Guidelines and Objectives
13. Security Considerations
14. IANA Considerations
15. References
15.1. Normative References
15.2. Informative References
Acknowledgements
Authors' Addresses
1. Introduction
This document defines the Connectivity Provisioning Negotiation
Protocol (CPNP) that is meant to dynamically exchange and negotiate
connectivity provisioning parameters and other service-specific
parameters between a Customer and a Provider. CPNP is a tool that
introduces automation to the service negotiation and activation
procedures, thus fostering the overall service provisioning process.
CPNP can be seen as a component of the dynamic negotiation metadomain
described in Section 2.4 of [RFC7149].
CPNP is a generic protocol that can be used for negotiation purposes
other than connectivity provisioning. For example, CPNP can be used
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