CGMP router starts by sending a Join packet with the Group Destination MAC Address set to all zeros (meaning all multicast groups) and the source address as its own MAC address.是什么意思_CGMP router starts by sending a Join packet with the Group Destination MAC Address set to all zeros (meaning all multicast groups) and the source address as its own MAC address.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句