Netopia R5300 - Manual (Page 249)

Understanding IP Addressing B-11
N N N Nee e essssttttee e ed d d d IIIIP P P P ssssu u u ub b b bn n n nee e ettttssss
Under cer tain circumstances, you may want to create remote subnets from the limited number of IP addresses
issued by your ISP or other authority. You can do this using connection profiles. These subnets can be nested
within the range of IP addresses available to your network.
For example, suppose that you obtain the Class C network address a.b.c.0 to be distributed among three
networks. This network address can be used on your main network, while por tions of it can be subnetted to the
two remaining networks.
Note: The IP address a.b.c.0 has letters in place of the first three numbers to generalize it for this example.
The following figure shows a possible network configuration exhibiting this scheme. The main network is set up
with the Class C address a.b.c.0, and contains Router A (which could be a Netopia R5000 Series Router), a
Netopia R5000 Series Router, and a number of other hosts. Router A maintains a link to the Internet and can
be used as the default gateway.
Internet
Router A
Router C Router B
a.b.c.0
a.b.c.16
a.b.c.1
a.b.c.2
a.b.c.248
a.b.c.249
a.b.c.128
a.b.c.129