集中处理信元缓冲的AT M交换机结构复杂、扩展性不好、不易保证高吞吐率，而由多级交换单元分布处理信元缓冲可克服这些缺点。
There are some drawbacks in ATM switch unifying buffer: complicated structure, lack of expansibility and difficulties in ensuring to ensure high throughput.
对于采用FC（光纤通道）网络的航空电子系统，从FC的基本模型出发，给出了三种具有容错能力的常用拓扑结构：双环结构、双交换机结构和交换机仲裁环组合结构。
To the avionics of fibre channel(FC) interconnection, based on the basic FC interconnection model, three fault tolerance topologies are given: loop-to-loop, switch-to-switch and switch-loop.
网络拓扑采用星形结构，所有机架向后连接到管理机架的主交换机。
The network topology takes a star shape, with all racks connecting back to a main switch in the management rack.
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