[alto] Protocol Action: 'YANG Data Models for the Application-Layer Traffic Optimization (ALTO) Protocol' to Proposed Standard (draft-ietf-alto-oam-yang-17.txt)
The IESG <iesg-secretary@ietf.org> Tue, 23 January 2024 17:40 UTC
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Date: Tue, 23 Jan 2024 09:40:16 -0800
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Subject: [alto] Protocol Action: 'YANG Data Models for the Application-Layer Traffic Optimization (ALTO) Protocol' to Proposed Standard (draft-ietf-alto-oam-yang-17.txt)
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The IESG has approved the following document: - 'YANG Data Models for the Application-Layer Traffic Optimization (ALTO) Protocol' (draft-ietf-alto-oam-yang-17.txt) as Proposed Standard This document is the product of the Application-Layer Traffic Optimization Working Group. The IESG contact persons are Warren Kumari, Robert Wilton and Martin Duke. A URL of this Internet-Draft is: https://datatracker.ietf.org/doc/draft-ietf-alto-oam-yang/ Technical Summary This document defines a YANG data model for Operations, Administration, and Maintenance (OAM) & Management of the Application-Layer Traffic Optimization (ALTO) Protocol. The operator of an ALTO server can use this data model to (1) set up the ALTO server, (2) configure server discovery, (3) create, update and remove ALTO information resources, (4) manage the access control of each ALTO information resource, and (5) collect statistical data from the ALTO server. The application provider can also use this data model to configure ALTO clients to communicate with known ALTO servers. Working Group Summary No controversy was raised during the development of this specification. The authors were very responsive in taking care of all the comments and making the required changes. However, there were some aspects that required some cycles before proceeding with the current design in the spec, e.g.,: * How to handle data types defined in ALTO IANA registries and whether to consider an IANA-maintained YANG module based upon these registries. The decision was to make use of plain identities directly into the base ALO module. The reasoning for this decision was that many WG participants think that the registries won't be updated frequently and that having an IANA-maintained module is "overdesign". The Shepherd disagrees with that argument as this questions the value of having the registry in the first place, but this is not a blocking point. Let's hope that netmod WG can revise the YANG Authors Guidelines to include guidelines for IANA-maintained YANG modules. * Whether and how to supply server-to-server communication for multi-domain settings: the decision was to restrict the scope of the discovery, but leave the communication out of scope. * Whether and how to model how ALTO data is aggregated and stored: The decision is to consider these as implementation-specific and out of the scope of the base model. * Notifications for resource limits: the base module includes specific data nodes (notify-res-mem-limit, notify-upd-stream-limit) to trigger notifications. There was an alternate proposal to build on RFC 8632 but that was considered as more complex to integrate. * During the AD review, text about data sources was removed as out of scope for the working group. Document Quality There is one known implementation. Personnel The Document Shepherd for this document is Mohamed Boucadair. The Responsible Area Director is Martin Duke.