Management and Control of Scalable and Resilient Next-Generation Optical Networks

Two research topics in next-generation optical networks with wavelength-division multiplexing (WDM) technologies were investigated: (1) scalability of network management and control, and (2) resilience/reliability of networks upon faults and attacks. In scalable network management, the scalability...

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Main Author: Liu, Guanglei
Published: Georgia Institute of Technology 2007
Subjects:
Online Access:http://hdl.handle.net/1853/14610
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spelling ndltd-GATECH-oai-smartech.gatech.edu-1853-146102013-01-07T20:16:51ZManagement and Control of Scalable and Resilient Next-Generation Optical NetworksLiu, GuangleiOptical networksNetwork reliabilityNetwork securityNetwork managementCommunication networksTwo research topics in next-generation optical networks with wavelength-division multiplexing (WDM) technologies were investigated: (1) scalability of network management and control, and (2) resilience/reliability of networks upon faults and attacks. In scalable network management, the scalability of management information for inter-domain light-path assessment was studied. The light-path assessment was formulated as a decision problem based on decision theory and probabilistic graphical models. It was found that partial information available can provide the desired performance, i.e., a small percentage of erroneous decisions can be traded off to achieve a large saving in the amount of management information. In network resilience under malicious attacks, the resilience of all-optical networks under in-band crosstalk attacks was investigated with probabilistic graphical models. Graphical models provide an explicit view of the spatial dependencies in attack propagation, as well as computationally efficient approaches, e.g., sum-product algorithm, for studying network resilience. With the proposed cross-layer model of attack propagation, key factors that affect the resilience of the network from the physical layer and the network layer were identified. In addition, analytical results on network resilience were obtained for typical topologies including ring, star, and mesh-torus networks. In network performance upon failures, traffic-based network reliability was systematically studied. First a uniform deterministic traffic at the network layer was adopted to analyze the impacts of network topology, failure dependency, and failure protection on network reliability. Then a random network layer traffic model with Poisson arrivals was applied to further investigate the effect of network layer traffic distributions on network reliability. Finally, asymptotic results of network reliability metrics with respect to arrival rate were obtained for typical network topologies under heavy load regime. The main contributions of the thesis include: (1) fundamental understandings of scalable management and resilience of next-generation optical networks with WDM technologies; and (2) the innovative application of probabilistic graphical models, an emerging approach in machine learning, to the research of communication networks.Georgia Institute of Technology2007-05-25T17:39:57Z2007-05-25T17:39:57Z2007-01-10Dissertationhttp://hdl.handle.net/1853/14610
collection NDLTD
sources NDLTD
topic Optical networks
Network reliability
Network security
Network management
Communication networks
spellingShingle Optical networks
Network reliability
Network security
Network management
Communication networks
Liu, Guanglei
Management and Control of Scalable and Resilient Next-Generation Optical Networks
description Two research topics in next-generation optical networks with wavelength-division multiplexing (WDM) technologies were investigated: (1) scalability of network management and control, and (2) resilience/reliability of networks upon faults and attacks. In scalable network management, the scalability of management information for inter-domain light-path assessment was studied. The light-path assessment was formulated as a decision problem based on decision theory and probabilistic graphical models. It was found that partial information available can provide the desired performance, i.e., a small percentage of erroneous decisions can be traded off to achieve a large saving in the amount of management information. In network resilience under malicious attacks, the resilience of all-optical networks under in-band crosstalk attacks was investigated with probabilistic graphical models. Graphical models provide an explicit view of the spatial dependencies in attack propagation, as well as computationally efficient approaches, e.g., sum-product algorithm, for studying network resilience. With the proposed cross-layer model of attack propagation, key factors that affect the resilience of the network from the physical layer and the network layer were identified. In addition, analytical results on network resilience were obtained for typical topologies including ring, star, and mesh-torus networks. In network performance upon failures, traffic-based network reliability was systematically studied. First a uniform deterministic traffic at the network layer was adopted to analyze the impacts of network topology, failure dependency, and failure protection on network reliability. Then a random network layer traffic model with Poisson arrivals was applied to further investigate the effect of network layer traffic distributions on network reliability. Finally, asymptotic results of network reliability metrics with respect to arrival rate were obtained for typical network topologies under heavy load regime. The main contributions of the thesis include: (1) fundamental understandings of scalable management and resilience of next-generation optical networks with WDM technologies; and (2) the innovative application of probabilistic graphical models, an emerging approach in machine learning, to the research of communication networks.
author Liu, Guanglei
author_facet Liu, Guanglei
author_sort Liu, Guanglei
title Management and Control of Scalable and Resilient Next-Generation Optical Networks
title_short Management and Control of Scalable and Resilient Next-Generation Optical Networks
title_full Management and Control of Scalable and Resilient Next-Generation Optical Networks
title_fullStr Management and Control of Scalable and Resilient Next-Generation Optical Networks
title_full_unstemmed Management and Control of Scalable and Resilient Next-Generation Optical Networks
title_sort management and control of scalable and resilient next-generation optical networks
publisher Georgia Institute of Technology
publishDate 2007
url http://hdl.handle.net/1853/14610
work_keys_str_mv AT liuguanglei managementandcontrolofscalableandresilientnextgenerationopticalnetworks
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