How does the KIV-21 treat Broadcast and Multicast messages?
IP Multicast is more like “tailored Broadcast”: users join a multicast group (a multicast IPaddress); the source sends data one time to the group address and the cloud(multicast-capable routers) determines how to route the data to the group members.Multicast is a packet that is addressed in a way to be received by any receiver thathas joined the multicast group (thus the black side routers route the packet to thereceivers that are in the group). IP Broadcast is, literally, sending the same packet to allIP addresses, one address at a time; very bandwidth and time inefficient. The real issueis that broadcast packets are not usually forwarded through the internet in order tomitigate against broadcast flooding. It is not usual to be able to send a broadcastmessage beyond a specific LAN.
