internet potocol problem

can anybody tell me what is the different from "multicast" and "broadcast" potocol?

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  • 1 decade ago
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    broadcast的意思是廣播,multicast的意思是群播,這兩種感覺上都是可以對很多人傳送,但是就對象而言還是有差別的,而在網路上面只要是broadcast packet的話不管是誰看到都要收上來看,亦即網路上面所有人都會看到這個message,而multicast只有指定的群組才會把這個packet收上來,如果不是在指定的group裡面的人收到了,PHY會把packet drop,也就是上層的人不會看到這個packet,還有一種是unicast,這個就是一對一的傳送囉。

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