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唔,我想了很久終於拿來架了
測試的環境大概是
P4 2.6G + 1280Mb RAM + Intel 1000MT *3

NAT client大概有2000點
throughput大概>50Mbps(為什麼大於50而已…因為有一些被鎖了:p)
剛開始沒鎖會把100Mbps吃滿,而且uplink的Layer4 Switch只有100UTP -_-”

架構大概是
四棟宿舍edge->1G*4->Core Router->1G*1->NAT BSD->200Mbps->L4 Switch->WAN

效率上不錯,雖然受限於PCI 32 bits,但比廢材Foundry做NAT好太多了。

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