کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10339532 694484 2011 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
M2-CYCLE: An optical layer algorithm for fast link failure detection in all-optical mesh networks
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر شبکه های کامپیوتری و ارتباطات
پیش نمایش صفحه اول مقاله
M2-CYCLE: An optical layer algorithm for fast link failure detection in all-optical mesh networks
چکیده انگلیسی
To achieve fast link failure detection in all-optical networks, monitoring-cycles (m-cycles) are introduced at the optical layer to reduce the number of required monitoring devices (or monitors). Each m-cycle is equipped with a monitor and a pair of optical transceivers to transmit an optical supervisory signal. A set of m-cycles can be found to form a cycle cover of the network. If a link fails, optical supervisory signals inside the m-cycles passing through this link will be disrupted, and the corresponding monitors will alarm due to Loss of Light (LoL). This gives an alarm code to localize the failed link. The accuracy of the failure localization is measured by localization degree, and the amount of monitoring resources required is measured by the number of cycles/monitors, cover length, and monitoring wavelength requirement. The best known m-cycle construction algorithm HST [11] adopts a spanning tree-based approach. In this paper, we propose a new algorithm M2-CYCLE to construct a cycle cover consisting of a set of minimum-length m-cycles (or m2-cycles). We prove that M2-CYCLE achieves the same localization degree as the spanning tree-based approach, but requires less amount of monitoring resources no matter how the spanning tree is generated. Numerical results confirm our theoretical analysis, and show that the monitoring resources required by M2-CYCLE are dramatically cut down.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Networks - Volume 55, Issue 3, 21 February 2011, Pages 748-758
نویسندگان
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