That is, hosts in the same group can receive all data in the group, switches such as Huawei campus switch, and BRAS routers in the network replicate and forward only the data they need to those who need it. A host can request a router to join or leave a group. The routers and switches on the network selectively copy and transmit data, that is, transmit data only to the hosts that join the group.
In this way, data can be transmitted to multiple hosts in a group at a time, and another communication of other hosts that are not in a group is not affected. Clients which need the same data flow join the same group to share one data flow, reducing server load. Multicast has the advantages of the broadcast. The multicast protocol replicates and forwards data flows based on the requirements of the receiver.
Therefore, the total service bandwidth of the server is not limited by the bandwidth of the client. The IP protocol allows more than million multicast services. Therefore, the IP protocol can provide abundant services. Multicast protocols, like unicast protocols, allow transmission over Internet broadband networks.
Compared with the unicast protocol, the multicast protocol does not have an error correction mechanism. The packet loss and error cannot be rectified, but the fault tolerance mechanism and QoS can be used to rectify the fault.
Although the existing network supports multicast transmission, customer authentication and QoS need to be improved. Theoretically, there are mature solutions to these disadvantages. However, these disadvantages need to be gradually applied to existing networks.
Skip to content. Created for free using WordPress. Differences between unicast, multicast, and broadcast. February 9 Besides, multicast requires group management, in order to ensure the message can be sent to those hosts which are interested in receiving the message.
And the traffic on the multicast network is under control. The process of data transmission is different. Unicast only sends the data to one receiver, but broadcast sends the same data to all receivers connected in one LAN. Moreover, if you want to share some private or unique information with another person, you must use unicast network but not the broadcast. Here is a table to give you a clear comparison of unicast vs multicast vs broadcast. From the table, we can see that multicast is the most efficient method for data transmitting.
To meet the market demand, almost all FS network switches have multicast function. As regard with unicast vs multicast vs broadcast, we know the key difference between them is the different transmission paths. Skip to content. Change Language. Related Articles. Computer Network Fundamentals. Physical layer. Data Link layer. Network layer. Transport layer. Application layer. Network Security.
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