| An integrated self-healing algorithm for resilient packet ring |
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| 作者姓名： | Zhou Xiaobo |
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| 作者单位： | [1]School of Electronics and Information Engineering, Beijing Jiaotong University [2]Department of Electronic Engineering, Tsinghua University |
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| 基金项目： | Supported by the High Technology Research and Development Programme of China （No.2002AA121041）. |
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| 摘 要： | Resilient Packet Ring （RPR） is a Media Access Control （MAC） layer protocol that operates over a double counter-rotating ring network topology. RPR is designed to enhance Synchronous Digital Hierarchy （SDH） in order to handle data traffic more efficiently. Since Intelligent Protection Switching （IPS） is one of the key technologies in ring networks, RPR provides two intelligent protection algorithms： steering and wrapping. While wrapping in RPR in essence inherits the automatic protection switching （APS） algorithm of SDH, it also wastes the bandwidth on the wrapping ringlets and may result in severe congestion. Whereas steering in RPR provides high bandwidth utilization, its switching speed is low, because it is indeed a high layer＇s restoration algorithm. In this paper, integrated self-healing（ISH） algorithm as an effective algorithm for RPR is proposed, which synthesizes the merits of the two algorithms by transporting healing signal and computing routing in MAC layer. At last, the performance of ISH algorithm is analyzed and simulated.
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| 关 键 词： | 弹性信息包环 RPR 媒介存取控制 MAC 自恢复环 智能保护开关 |
| 收稿时间： | 2003-07-21 |
An integrated self-healing algorithm for resilient packet ring |
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| Zhou Xiaobo,Jin Depeng,Zeng Lieguang.An integrated self-healing algorithm for resilient packet ring[J].High Technology Letters,2005,11(3):284-288. |
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| Authors: | Zhou Xiaobo Jin Depeng Zeng Lieguang |
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| Abstract: | Resilient Packet Ring (RPR) is a Media Access Control (MAC) layer protocol that operates over a double counter-rotating ring network topology. RPR is designed to enhance Synchronous Digital Hierarchy(SDH) in order to handle data traffic more efficiently. Since Intelligent Protection Switching(IPS) is one of the key technologies in ring networks, RPR provides two intelligent protection algorithms: steering and wrapping. While wrapping in RPR in essence inherits the automatic protection switching(APS) algorithm of SDH, it also wastes the bandwidth on the wrapping ringlets and may result in severe congestion. Whereas steering in RPR provides high bandwidth utilization, its switching speed is low, because it is indeed a high layer's restoration algorithm. In this paper, integrated self-healing(ISH) algorithm as an effective algorithm for RPR is proposed, which synthesizes the merits of the two algorithms by transporting healing signal and computing routing in MAC layer. At last, the performance of ISH algorithm is analyzed and simulated. |
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| Keywords: | resilient packet ring (RPR) media access control (MAC) self-healing ring intelligent protection switching (IPS) |
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