On Constraints for Path Computation in Multi-Layer Switched Networks(Traffic Engineering and Multi-Layer Networking,<Special Section>Feature Topics on Latest Trends in Optical Networks)
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概要
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This paper considers optical transport and packet networks and discusses the constraints and solutions in computation of traffic engineering paths. We categorize the constraints into prunable or non-prunable classes. The former involves a simple metric which can be applied for filtering to determine the path. The latter requires a methodic consideration of more complicated network element attributes. An example of this type of constraints is path loss in which the metric can be evaluated only on a path basis, as opposed to simply applying the metric to the link. Another form of non-prunable constraint requires adaptation and common vector operation. Examples are the switching type adaptation and wavelength continuity, respectively. We provide possible solutions to cases with different classes of constraints and address the problem of path computation in support of traffic engineering in multi-layer networks where a set of constrains are concurrently present. The solutions include the application of channel graph and common vector to support switching type adaptation and label continuity, respectively.
- 社団法人電子情報通信学会の論文
- 2007-08-01
著者
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Oki Eiji
Ntt Network Service Systems Laboratories Ntt Corporation
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Oki Eiji
Ntt Netwok Service Systems Laboratories
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JABBARI Bijan
George Mason University
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GONG Shujia
George Mason University
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