A new Request for Comments is now available in online RFC libraries. RFC 8309 Title: Service Models Explained Author: Q. Wu, W. Liu, A. Farrel Status: Informational Stream: IETF Date: January 2018 Mailbox: bill.wu@huawei.com, liushucheng@huawei.com, afarrel@juniper.net Pages: 23 Characters: 54082 Updates/Obsoletes/SeeAlso: None I-D Tag: draft-ietf-opsawg-service-model-explained-05.txt URL: https://www.rfc-editor.org/info/rfc8309 DOI: 10.17487/RFC8309 The IETF has produced many modules in the YANG modeling language. The majority of these modules are used to construct data models to model devices or monolithic functions. A small number of YANG modules have been defined to model services (for example, the Layer 3 Virtual Private Network Service Model (L3SM) produced by the L3SM working group and documented in RFC 8049). This document describes service models as used within the IETF and also shows where a service model might fit into a software-defined networking architecture. Note that service models do not make any assumption of how a service is actually engineered and delivered for a customer; details of how network protocols and devices are engineered to deliver a service are captured in other modules that are not exposed through the interface between the customer and the provider. This document is a product of the Operations and Management Area Working Group Working Group of the IETF. INFORMATIONAL: This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited. This announcement is sent to the IETF-Announce and rfc-dist lists. To subscribe or unsubscribe, see https://www.ietf.org/mailman/listinfo/ietf-announce https://mailman.rfc-editor.org/mailman/listinfo/rfc-dist For searching the RFC series, see https://www.rfc-editor.org/search For downloading RFCs, see https://www.rfc-editor.org/retrieve/bulk Requests for special distribution should be addressed to either the author of the RFC in question, or to rfc-editor@rfc-editor.org. Unless specifically noted otherwise on the RFC itself, all RFCs are for unlimited distribution. The RFC Editor Team Association Management Solutions, LLC