- CIDR for short (pronounced cider)
- Uses a netmask to determine which part of an address is the network part
- Written 10.0.0.1/24 or 10.0.0.1 255.255.255.0
- 256 host addresses are typical but not exclusive
- Typically the network address (10.0.0.0), the broadcast address
(10.0.0.255), and a gateway are required
- So a /30 netmask is only good for 1 host and a /29 netmask is only good
for 5 hosts
© 2002 David Anselmi