事实上，子网的组播路由器在处理完主机的加入组播组信息之后并没有保存主机的身份信息，也没有将它传输到上游的组播分发树。

In fact, the subnet multicast router does not maintain host's identity after processing its membership request and does not transmit such an identity upstream in the delivery tree.

youdao

事实上，子网的组播路由器在处理完主机的加入组播组信息之后并没有保存主机的身份信息，也没有将它传输到上游的组播分发树。

In fact, the subnet multicast router does not maintain host's identity after processing its membership request and does not transmit such an identity upstream in the delivery tree.

youdao