A subnet mask is a
For the example above, if you want all the devices on the
Subnet Mask Routing and Filtering
0.0.0.0IP packets are transmitted to all devices.
IP packets are only transmitted to devices that are IP that’s first octet
255.0.0.0matches the sender’s IP address’s first octet.
| IP packets are only transmitted to devices that are IP that’s first two |
255.255.0.0 | octets match the sender’s IP address’s first two octets. |
| IP packets are only transmitted to devices that are IP that’s first three |
255.255.255.0 | octets match the sender’s IP address’s first three octets. |
37