| 講演名 | 2015-03-18 Recovery from Multiple Node Failures by Virtual Network Topology Control Based on Attractor Selection , |
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| 抄録(英) | The difficulties of high granularity switching at ultra high speed of wavelength division multiplexing optical networks and the limitation of transmitter/receiver count in a node is solved by using wavelength switching and employing virtual network topologies, which is the effective topology seen by the IP network. However, reconfiguration of a virtual network topology becomes necessary when the traffic conditions change or network failures occur. In this paper, we present an attractor selection mechanism, which is similar to the system used by living organisms, in order to recover from topology failures and find a new virtual network topology, which minimizes the maximum lightpath load in the network, without requiring the traffic matrix. Simulation results indicate that increasing the stochastic control by parameter tuning decreases the recovery time, but it may have side effects. As an alternative, we propose randomizing the expression levels of lightpaths by one time after the failure, which allows the system to do random walk to find a new attractor state in a shorter time. We show that randomization allows faster recovery than increasing the noise or gradient parameter. |
| キーワード(和) | |
| キーワード(英) | Wavelength-division multiplexing / optical network / attractor selection / virtual network topology control / biologically-inspired networking |
| 資料番号 | PN2014-79 |
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| 研究会 | PN |
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| 開催期間 | 2015/3/11(から1日開催) |
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| 申込み研究会 | Photonic Network (PN) |
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| 本文の言語 | ENG |
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| タイトル（英） | Recovery from Multiple Node Failures by Virtual Network Topology Control Based on Attractor Selection |
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| キーワード(1)（和/英） | / Wavelength-division multiplexing |
| 第 1 著者 氏名（和/英） | / Onur ALPARSLAN |
| 第 1 著者 所属（和/英） | Graduate School of Information Science and Technology, Osaka University |
| 発表年月日 | 2015-03-18 |
| 資料番号 | PN2014-79 |
| 巻番号（vol） | vol.114 |
| 号番号（no） | 518 |
| ページ範囲 | pp.- |
| ページ数 | 5 |
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