Optimizing Link Sleeping Reconfigurations in ISP Networks with Off-Peak Time Failure Protection

Energy consumption in ISP backbone networks has been rapidly increasing with the advent of increasingly bandwidth-hungry applications. Network resource optimization through sleeping reconfiguration and rate adaptation has been proposed for reducing energy consumption when the traffic demands are at...

Full description

Saved in:
Bibliographic Details
Published inIEEE eTransactions on network and service management Vol. 10; no. 2; pp. 176 - 188
Main Authors Francois, F., Ning Wang, Moessner, K., Georgoulas, S.
Format Journal Article
LanguageEnglish
Published IEEE 01.06.2013
Subjects
Complexity theory
Energy management
Energy-aware network management
Failure detection
green networks
Green products
link sleeping
network robustness
Network topology
Routing protocols
Telecommunication traffic
traffic engineering
Online AccessGet full text

Cover

More Information
Summary:Energy consumption in ISP backbone networks has been rapidly increasing with the advent of increasingly bandwidth-hungry applications. Network resource optimization through sleeping reconfiguration and rate adaptation has been proposed for reducing energy consumption when the traffic demands are at their low levels. It has been observed that many operational backbone networks exhibit regular diurnal traffic patterns, which offers the opportunity to apply simple time-driven link sleeping reconfigurations for energy-saving purposes. In this work, an efficient optimization scheme called Time-driven Link Sleeping (TLS) is proposed for practical energy management which produces an optimized combination of the reduced network topology and its unified off-peak configuration duration in daily operations. Such a scheme significantly eases the operational complexity at the ISP side for energy saving, but without resorting to complicated online network adaptations. The GÉANT network and its real traffic matrices were used to evaluate the proposed TLS scheme. Simulation results show that up to 28.3% energy savings can be achieved during off-peak operation without network performance deterioration. In addition, considering the potential risk of traffic congestion caused by unexpected network failures based on the reduced topology during off-peak time, we further propose a robust TLS scheme with Single Link Failure Protection (TLS-SLFP) which aims to achieve an optimized trade-off between network robustness and energy efficiency performance.
ISSN:1932-4537
1932-4537
DOI:10.1109/TNSM.2012.092412.120295