R40 R121 R127 R130
SHORT SHORT SHORT SHORT 400 133
EMPTY SHORT SHORT SHORT 352 127
SHORT EMPTY SHORT SHORT 328 131
SHORT SHORT EMPTY SHORT 373 124
SHORT SHORT SHORT EMPTY 252 111
QoS
Short for Quality of Service, a networking term that specifies a guaranteed throughput level. One of the biggest advantages of ATM over competing technologies such as Frame Relay and Fast Ethernet, is that it supports QoS levels. This allows ATM providers to guarantee to their customers that end-to-end latency will not exceed a specified level.
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吞吐量是什么 ?