A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : ALTO Cost Schedule
Author(s) : Sabine Randriamasy
Nico Schwan
Filename : draft-randriamasy-alto-cost-schedule-02.txt
Pages : 17
Date : 2012-10-19
Abstract:
The goal of Application-Layer Traffic Optimization (ALTO) is to
bridge the gap between network and applications by provisioning
network related information. This allows applications to make
informed decisions, for example when selecting a target host from a
set of candidates. The ALTO problem statement [RFC5693] considers
typical applications as file sharing, real-time communication and
live streaming peer-to-peer networks. Recently other use cases
focused on Content Distribution Networks and Data Centers have
emerged.
The present draft proposes to extend the cost information provided by
the ALTO protocol. The purpose is to broaden the decision
possibilities of applications to not only decide 'where' to connect
to, but also 'when'. This is useful to applications that have a
degree of freedom on when to schedule data transfers, such as non-
instantaneous data replication between data centers or service
provisioning to end systems with irregular connectivity. The draft
therefore specifies a new cost mode, called the "schedule" mode. In
this mode the ALTO server offers cost maps that contain path ratings
that are valid for a given timeframe (e.g. hourly) for a period of
time (e.g. a day). Besides the functional time-shift enhancement
providing multi-timeframe cost values, the ALTO Cost Schedule also
allows to save a number of ALTO transactions and thus resources on
the ALTO server and clients. Last, guidance to schedule application
traffic can also efficiently help for load balancing and resources
efficiency.
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-randriamasy-alto-cost-schedule
There's also a htmlized version available at:
http://tools.ietf.org/html/draft-randriamasy-alto-cost-schedule-02
A diff from the previous version is available at:
http://www.ietf.org/rfcdiff?url2=draft-randriamasy-alto-cost-schedule-02
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
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