A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Considerations on the AS-Level Application-Layer Traffic Optimization
Author(s) : Hirochika Asai
Hiroshi Esaki
Tsuyoshi Momose
Filename : draft-asai-cross-domain-overlay-03.txt
Pages : 24
Date : 2011-12-17
Application-layer or overlay routing has been applied to various
distributed systems such as content delivery networks and live media
streaming systems. The problems with these systems for the layer 3
network providers, such as Internet service providers, are that these
systems utilize higher-cost network resources (e.g., transit links)
from the viewpoint of the layer 3 network providers but the operators
have difficulties in controlling and optimizing the traffic of these
systems because these systems construct their own networks over the
layer 3 network. The ALTO Working Group has worked on application-
layer traffic optimization to fill the gaps in routing policies
between the layer 3 network and applications by providing the
underlay network topology and cost information to these systems.
However, there are considerations on applying application-layer
traffic optimization techniques to cross-domain traffic because the
cost is assumed to be configured by each AS although ASes are
autonomously operated. This document summarizes general problems
with overlay networks and considerations on the AS-level application-
layer traffic optimization from the viewpoint of inter-AS economics.
The main concerns on the AS-level application-layer traffic
optimization are unfair policy configuration between distinct
administrative domains and asymmetric economic policies on transit
links. The underlying problem inducing these concerns is that the
economic policies between interconnected ASes are non-disclosure due
to commercial contracts. This document also discusses the
conceivable approaches to solve the problems and considerations.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-asai-cross-domain-overlay-03.txt
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
This Internet-Draft can be retrieved at:
ftp://ftp.ietf.org/internet-drafts/draft-asai-cross-domain-overlay-03.txt
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