一种容错ATM交换机仿真分析

Simulation Analysis of a Kind of Fault-tolerant ATM Switch

讨论了一种容错ATM交换机结构。在该交换机中通过提供子交换单元和扩展链路来增加冗余路径的数目 ,该结构可以容错多个故障 ,并且冗余路径的数目随着交换机级数的增加而指数增长。通过仿真的方法得到了该交换机的生存概率、容错水平和费效比 3个参数 。

A new kind of fault-tolerant ATM switch is discussed. This kind of switch structure increases the redundant paths by subswitches and extended links. This structure can tolerate multiple faults and the redundant paths increase exponentially as the size of the switch stages increases. The survival probability, level of fault tolerance and cost-effectiveness ratio of this switch are gained by the simulation. The simulation results indicate that the proposed architecture is more fault-tolerant and cost-effective than those architectures found in the literature.