NDLI: On the energy efficiency of IP-over-WDM networks

Content Provider	IEEE Xplore Digital Library
Author	Vismara, F. Grkovic, V. Musumeci, F. Tornatore, M. Bregni, S.
Copyright Year	2010
Description	Author affiliation: Politecnico di Milano, Department of Electronics and Information, 20131 Milan, Italy (Vismara, F.; Grkovic, V.; Musumeci, F.; Tornatore, M.; Bregni, S.)
Abstract	In the next 10 to 15 years the Internet will undergo a substantial increase especially with respect to the bandwidth required by end-users. Since the current Internet already consumes a not-negligible percentage of the total world electricity, reducing the energy consumption of telecom networks is expected to become an increasingly-important challenge, being unacceptable that the Internet energy consumption grows proportionally to the served bandwidth. In this paper we focus on backbone transport networks, that serve large aggregated amount of traffic. We compare three different network architectures which implement the Wavelength Division Multiplexing (WDM)-based transport of IP packets over optical fiber links (IP-over-WDM networks). The differences between these three architectures, which we identify as IP with no Bypass (IP-NB), IP with Bypass (IP-B) and IP with Bypass and Grooming (IP-BG), concern the capabilities of performing aggregation of traffic (grooming) and optical switching. IP-NB architecture performs grooming in every network node, where the traffic is electronically processed and forwarded by the IP routers. IP-B enables switching of wavelength channels directly in the optical domain, thus bypassing the processing of IP packets in the intermediate IP routers. This architecture does not provide grooming capabilities, but it just allows aggregation of different traffic demands to be established between the same source/destination pairs. IP-BG architecture represents an intermediate solution between the previous, since it provides both grooming capabilities (as for IP-NB) in order to efficiently exploit network capacity, and optical switching (as for IP-B) to reduce expensive electronic processing operations. We perform a comparative study between these three architectures showing the trade-off between the reduction of the power consumption or the cost of the networks, and we analyze how minimizing one of these two factors can influence the other.
Starting Page	1
Ending Page	6
File Size	1407457
Page Count	6
File Format	PDF
ISBN	9781424471713
e-ISBN	9781424471737
DOI	10.1109/LATINCOM.2010.5640979
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-09-15
Publisher Place	Colombia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Power demand Network topology Optical switches Optical fiber networks IP networks Transponders
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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