NDLI: Dynamic reconfiguration and routing algorithms for IP-over-WDM networks with stochastic traffic

Content Provider	IEEE Xplore Digital Library
Author	Brzezinski, A. Modiano, E.
Copyright Year	1983
Abstract	We develop algorithms for joint IP-layer routing and WDM logical topology reconfiguration in IP-over-WDM networks experiencing stochastic traffic. At the wavelength division multiplexing (WDM) layer, we associate a nonnegligible overhead with WDM reconfiguration, during which time tuned transceivers cannot service backlogged data. The Internet Protocol (IP) layer is modeled as a queueing system. We demonstrate that the proposed algorithms achieve asymptotic throughput optimality by using frame-based maximum weight scheduling decisions. We study both fixed and variable frame durations. In addition to dynamically triggering WDM reconfiguration, our algorithms specify precisely how to route packets over the IP layer during the phases in which the WDM layer remains fixed. We demonstrate that optical-layer constraints do not affect the results, and provide an analysis of the specific case of WDM networks with multiple ports per node. In order to gauge the delay properties of our algorithms, we conduct a simulation study and demonstrate an important tradeoff between WDM reconfiguration and IP-layer routing. We find that multihop routing is extremely beneficial at low-throughput levels, while single-hop routing achieves improved delay at high-throughput levels. For a simple access network, we demonstrate through simulation the benefit of employing multihop IP-layer routes.
Sponsorship	IEEE Lasers and Electro-Optics Society Optical Society of America
Starting Page	3188
Ending Page	3205
Page Count	18
File Size	524590
File Format	PDF
ISSN	07338724
Volume Number	23
Issue Number	10
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-10-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Routing Stochastic processes Telecommunication traffic Wavelength division multiplexing Traffic control Delay Network topology Transceivers Internet Protocols WDM reconfiguration Birkhoff–von Neumann switches circuit switching frame scheduling Internet Protocol (IP) IP-over-WDM networks matrix decomposition multihop routing network control packet switching queueing network reconfiguration overhead stochastic coupling tunable transceivers tuning latency wavelength division multiplexing (WDM)
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics

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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
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