I am not sure if meeting online(for example, Skype meeting application etc) is using multicast mechanism. If it functions based on multicast, why do we need to configure multicast at layer 3? Actually via Skype, we also can send viedo to specific user. Anyone like to answer my question? thank you
If it functions based on multicast, why do we need to configure multicast at layer 3?
Typically, on wide wild internet, You only configure IP multicast from/towards trusted partners who mutually agreed with You to send/receive multicast. And Skype users do not have to know anything about Your multicast partners because Skype is not IP multicast. There are plenty of networks out there who have zero IP multicast partners but their users are happily Skyping left, right and center.