An Interconnected Multi-Plane Multi-Stage Fault-Tolerant On-Board Switching Fabric

The harsh space radiation environment compromises the reliability of an on-board switching fabric by leading to cross-point and switching element（SE）faults.Different from traditional faulttolerant switching fabrics only taking crosspoint faults into account,a novel Input and Output Parallel Clos net...

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Bibliographic Details
Published in:China communications 2015-02, Vol.12 (2), p.74-83
Main Authors: Liu, Kai, Yan, Jian, Chen, Xiang, Lu, Jianhua
Format: Article
Language:English
Subjects:
clos network
Clos网络
Fabrics
Fault tolerance
Fault tolerant systems
on-board switching fabric
reliability
Routing
Switches
Throughput
交换结构
多级
容错
平面
空间辐射环境
网络可靠性
输入/输出
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Summary:The harsh space radiation environment compromises the reliability of an on-board switching fabric by leading to cross-point and switching element（SE）faults.Different from traditional faulttolerant switching fabrics only taking crosspoint faults into account,a novel Input and Output Parallel Clos network,referred to as the（p_1,p_2）-IOPClos,is proposed to tolerate both cross-point and SE faults.In the（p_1,p_2）-IOPClos,there are p_1 and p_2 expanded parallel switching planes in the input and output stages,respectively.The multiple input/output switching planes are interconnected through the middle stage to provide multiple paths in each stage by which the network throughput can be increased remarkably.Furthermore,the network reliability of the（p_1,p_2）-IOPClos under the above both kinds of faults is analyzed.The corresponding implementation cost is also presented along with the network size.Both theoretical analysis and numerical results indicate that the（p_1,p_2）-IOPClos outperforms traditional Clos-type networks at reliability,while has less implementation cost than the multi-plane Clos network.
ISSN:1673-5447
DOI:10.1109/CC.2015.7084403