This Internet-Draft is no longer active. Unofficial copies of old Internet-Drafts can be found here:
http://tools.ietf.org/id/draft-randriamasy-alto-cost-schedule.
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.
Authors:
Sabine Randriamasy <Sabine.Randriamasy@alcatel-lucent.com>
Nico Schwan <ietf@nico-schwan.de>
(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid)
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