Table J. Address Allocation for Private Networks
IP Address Range
10.0.0.0to 10.255.255.255
172.16.0.0to 172.31.255.255
192.168.0.0 to 192.168.255.255
Allocation
1 class A network number
16 contiguous class B network numbers
256 contiguous class C network numbers
Small Workgroup
To set up a local workgroup around the modem, you can use the private IP address range of the modem. Allocate IP addresses to each PC and make sure all addresses are unique (figure 33).
IP address : 172.16.0.1
(Sub)netmask : 255.255.0.0
Default Gateway : none
IP address : 172.16.0.2
(Sub)netmask : 255.255.0.0
Default Gateway : none
IP address : 172.16.0.4
(Sub)netmask : 255.255.0.0
Default Gateway : none
IP Network 172.16
IP address : 172.16.0.3
(Sub)netmask : 255.255.0.0
Default Gateway : none
Figure 33. Example of Small Workgroup Configuration
Note:
In figure 33, the IP class B address is used (172.16.x.x.). The 10.x.x.x IP addresses could also be used.
If you have an existing workgroup, consider integrating the modem in this network. Simply change the IP address of the modem to a value that falls within the local network range.