ALTO WG -- IETF 89, London, United Kingdom Thursday, March 6, 2014, 15:20 - 16:50 WG info: current charter, status page. Mailing list: alto@ietf.org (archives) Chairs: Enrico Marocco <enrico.marocco@telecomitalia.it> Vijay K. Gurbani <vkg@bell-labs.com> Agenda: - Administrivia / Status (Chairs, 10') - Deployment considerations (Michael Scharf, 10') draft-ietf-alto-deployments-09 - Rechartering discussion (WG / Chairs / AD, 60') Work items under consideration: o (Standards Track) Protocol extensions for reducing the volume of on-the-wire data exchange required to align the ALTO server and clients. Extensions under consideration are mechanisms for delivering server-initiated notifications and partial updates of maps. Efforts developed in other working groups such as Websockets and JSON-path will be considered, as well as bespoke mechanisms specific to the ALTO protocol. (18') o (Standards Track) Extensions to the base ALTO server discovery mechanism (RFC-to-be) for deployment in heterogeneous network environments. Mechanisms under consideration are extensions for third-party and anycast-based server discovery. (5') o (Standards Track) Protocol extensions to convey a richer set of attributes to allow applications to determine not only "where" to connect but also "when" to connect. Such additional information will be related both to endpoints (e.g. conveying server load and cache geolocation information for CDN use cases) and to endpoint-to-endpoint costs (e.g. bandwidth calendaring to represent time-averaged cost values in datacenter networks). (19') The working group will specify such extension in coordination with other working groups that are also working on the related use cases (e.g. cdni, i2rs, lmap). o (Informational) A survey of techniques to formalize the structure of a network graph (that can derived from a set of related ALTO network and cost maps) in a format that would facilitate advanced graph computation. Such survey will cover both models used in popular open-source software (e.g. NetworkX, Blueprints) and models being considered in other working groups (e.g. netmod, i2rs). (18') - Wrap-up (ADs / Chairs, 10')