Multicast technology applies the method of group transmissions, using Router to copy data packages, it promised only one data package in every link at any time, and saved bandwidth.

组播技术采用群组发送的方式，用路由器来复制数据包，保证任何时候每条链路中只有一份数据包，因此节约了网络带宽。

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Multicast technology applies the method of group transmissions, using Router to copy data packages, it promised only one data package in every link at any time, and saved bandwidth.

组播技术采用群组发送的方式，用路由器来复制数据包，保证任何时候每条链路中只有一份数据包，因此节约了网络带宽。

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