Multicast - Single packets copied by the network and sent to a specific subset of network addresses. These addresses are specified in the destination address field. Compare with broadcast and unicast. All '1s' in a host portion reserved for the broadcast address Network address - Network layer address referring to a logical, rather than a physical, network device. Also called a protocol address.
Routers use a network's IP address when forwarding data on the Internet.
Broadcast address - Special address reserved for sending a message to all stations. Generally, a broadcast address is a MAC destination address of all ones. Compare with multicast address and unicast address. Local Network Broadcast - 255.255.255.255, for security, a routers treats this broadcast like any other broadcast and does not forward it boyond the local network. With IP addressing, it is possible to have over 2 million possible networks on the Internet.