Netopia 4000-Series manual Internet

B-12 Firmware User Guide

Internet

a.b.c.16

a.b.c.1 Router A

a.b.c.0

a.b.c.2

Router B

Router C

a.b.c.128

a.b.c.129

a.b.c.248

a.b.c.249

Routers B and C (which could also be Routers) serve the two remote networks that are subnets of a.b.c.0. The subnetting is accomplished by configuring the Router with connection profiles for Routers B and C (see the following table).

Connection profile	Remote IP address	Remote IP mask	Bits available for host
			address
For Router B	a.b.c.128	255.255.255.192	7
For Router C	a.b.c.248	255.255.255.248	3

The Router’s connection profiles for Routers B and C create entries in its IP routing table. One entry points to the subnet a.b.c.128, while a second entry points to the subnet a.b.c.248. The IP routing table might look similar to the following: