This last statement is nowadays a little less true with virtualization. It is composed of: 3 bytes of the manufacturer identifier and 3 bytes of the serial number. It consists of 6 bytes often given in hexadecimal form (for example 5E:FF:56:A2:AF:15). This is sometimes referred to as the hardware address. It is used to broadcast information to all the machines on the network.Ī MAC address is a physical identifier written in the factory onto the device. The last address of a range is the broadcast address. It is used to identify networks and to route information from one network to another. The first address of a range is the network address. The first address of a range as well as the last one have a particular role: There are also specific addresses within a network, which must be identified.
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