主要功能是为新到达的单播和多播信元在并行多级互连网(MIN)中寻找到一条能够成功建立连接的路径。
The main function is to find a connect path for new arriving unicast and multicast cells in the parallel Multistage Interconnect Network (MIN) of the ATM switch.
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.
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