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 Working Group of the IETF.
Title : Multi-Cost ALTO
Authors : Sabine Randriamasy
Wendy Roome
Nico Schwan
Filename : draft-ietf-alto-multi-cost-00.txt
Pages : 23
Date : 2015-05-22
Abstract:
The ALTO (Application Layer-Traffic Optimization) Protocol
([RFC7285]) defines several services that return various metrics
describing the costs between network endpoints. For example, when
downloading a file that is mirrored on several sites, a user
application may use these ALTO cost metrics to determine the most
efficient mirror site.
An ALTO Server may offer a variety of cost metrics, based on latency,
bandwidth, hop count, jitter, or whatever else the ALTO Server deems
useful. When selecting a mirror site, a client may consider more
than one metric, perhaps trading bandwidth for latency. While the
base ALTO Protocol allows a client to use more than one cost metric,
to do so, the client must request each metric separately. This
document defines a new service that allows a client to retrieve
several cost metrics with one request, which is considerably more
efficient. In addition, this document extends the ALTO constraint
tests to allow a user to specify an arbitrary logical combination of
tests on several cost metrics.
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-alto-multi-cost/
There's also a htmlized version available at:
https://tools.ietf.org/html/draft-ietf-alto-multi-cost-00
Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
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