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-27.txt
Pages : 39
Date : 2022-03-20
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
better performance metrics (e.g., lower delay or loss rate), 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-27
A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-alto-performance-metrics-27
Internet-Drafts are also available by rsync at rsync.ietf.org::internet-drafts
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