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-20.txt
Pages : 35
Date : 2021-11-30
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 (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-20
A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-alto-performance-metrics-20
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
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