Power savings in packet networks via optimised routing
File(s)
Accepted version
Author(s)
Gelenbe, E
Morfopoulou, C
Type
Journal Article
Abstract
algorithm for Quality of Service (QoS) and
power minimisation in wired networks to result on
reduced energy consumption. Two distinct schemes,
conventional shortest-path routing and an autonomic
algorithm energy aware routing algorithm (EARP) are
investigated as the starting point for the gradient algorithm.
Comparisons are conducted using the same
network test-bed and identical network traffic under
conditions where routers and link drivers are always
kept on so as to meet the needs for network reliability
in the presence of possible failures and unexpected
overload. Since splitting traffic flows can increase jitter
and the arrival of packets which are out of sequence, we
also do not allow the same packet flow to be conveyed
over multiple paths. In the experiments that we have
conducted we observe that power consumed with the
gradient-optimiser that is proposed in this paper is a
few percent to 10% smaller than that consumed using
shortest-path routing or EARP. Although the savings
are small, they can be very significant for the Internet
backbone as a whole over long periods of time, and
further power savings may be obtained by judiciously putting to sleep equipment when it is under-utilised.
power minimisation in wired networks to result on
reduced energy consumption. Two distinct schemes,
conventional shortest-path routing and an autonomic
algorithm energy aware routing algorithm (EARP) are
investigated as the starting point for the gradient algorithm.
Comparisons are conducted using the same
network test-bed and identical network traffic under
conditions where routers and link drivers are always
kept on so as to meet the needs for network reliability
in the presence of possible failures and unexpected
overload. Since splitting traffic flows can increase jitter
and the arrival of packets which are out of sequence, we
also do not allow the same packet flow to be conveyed
over multiple paths. In the experiments that we have
conducted we observe that power consumed with the
gradient-optimiser that is proposed in this paper is a
few percent to 10% smaller than that consumed using
shortest-path routing or EARP. Although the savings
are small, they can be very significant for the Internet
backbone as a whole over long periods of time, and
further power savings may be obtained by judiciously putting to sleep equipment when it is under-utilised.
Date Issued
2011-10-26
Citation
ACM/Springer Mobile Networks and Applications, 2011, 17 (1), pp.152-159
ISSN
1383-469X
Publisher
Springer Verlag
Start Page
152
End Page
159
Journal / Book Title
ACM/Springer Mobile Networks and Applications
Volume
17
Issue
1
Copyright Statement
© Springer Science+Business Media, LLC 2011. The final publication is available at Springer via http://dx.doi.org/10.1007/s11036-011-0344-0
Identifier
http://www.ee.ic.ac.uk/gelenbe
Publication Status
Published