I-D Action: draft-ietf-alto-performance-metrics-23.txt
internet-drafts@ietf.org Mon, 28 February 2022 20:33 UTC
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Subject: I-D Action: draft-ietf-alto-performance-metrics-23.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Application-Layer Traffic Optimization WG of the IETF. Title : ALTO Performance Cost Metrics Authors : Qin Wu Y. Richard Yang Young Lee Dhruv Dhody Sabine Randriamasy Luis Miguel Contreras Murillo Filename : draft-ietf-alto-performance-metrics-23.txt Pages : 38 Date : 2022-02-28 Abstract: The cost metric is a basic concept in Application-Layer Traffic Optimization (ALTO), and different applications may use different types of cost metrics. Since the ALTO base protocol (RFC 7285) defines only a single cost metric (namely, the generic "routingcost" metric), if an application wants to issue a cost map or an endpoint cost request in order to identify a resource provider that offers a better delay performance, the base protocol does not define the cost metric to be used. This document addresses this issue by extending the specification to provide a variety of network performance metrics, including network delay, delay variation (a.k.a, jitter), packet loss rate, hop count, and bandwidth. There are multiple sources (e.g., estimation based on measurements or service-level agreement) to derive a performance metric. This document introduces an additional "cost-context" field to the ALTO "cost-type" field to convey the source of a performance metric. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-alto-performance-metrics/ There is also an htmlized version available at: https://datatracker.ietf.org/doc/html/draft-ietf-alto-performance-metrics-23 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-alto-performance-metrics-23 Internet-Drafts are also available by rsync at rsync.ietf.org::internet-drafts
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