All datagrams sent by TCP/IP move through all machines in the network path. However, each host adapter ignores any packet that does not include that particular computer's IP address in the datagram header. Occasionally, you might want to send a message to all machines on a particular network. To do so, select a ``broadcast address'' for your machine. A broadcast address is one in which the host portion of the IP address consists either of all 0's or all 255's. The configuration procedure prompts you to choose between these address schemes:
Broadcast address schemes
Scheme | Example | Purpose |
---|---|---|
all zeroes (decimal 0) | 10.0.0.0 | provides compatibility with 4.2BSD systems |
all ones (decimal 255) | 10.0.255.255 | UNIX Operating System Standard (RFC-919) |