Unicast:
- It sends data from one source to single target device.i.e one to to mapping
- It follows Single Node Topology, so Network traffic is high.
- Eg: Web surfing, file transfer
- IP address of same sub-net is used for identifying server/s
- Except IP address, no other network configuration is required. If IP Address changed due to some reason, you need to add new IP address manually.
Multicast:
- It sends data from one device to multiple devices.i.e one to many mapping
- It works on star, mesh, tree and hybrid topology, so Network traffic is low.
- Eg: Video Streaming, Online gaming
- Nodes are automatically detect each other and those are dynamically join the cluster when the node is started
- The server status doesn’t need to be Running to configure it as a node in a cluster.
- we can add nodes to the cluster dynamically without restarting the cluster.
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