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。

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.

youdao

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。

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.

youdao