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B-14 Reference Guide
The Netopia 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:
IP Routing Table
Network Address-Subnet Mask-----via
Router------Port--Age--------Type------
----------------------------------SCROLL
UP--------------------------------
0.0.0.0 0.0.0.0 a.b.c.1 WAN 3719
Management
127.0.0.1 255.255.255.255 127.0.0.1 lp1 6423 Local
a.b.c.128 255.255.255.192 a.b.c.128 WAN 5157 Local
a.b.c.248 255.255.255.248 a.b.c.248 WAN 6205 Local
---------------------------------SCROLL
DOWN-------------------------------
UPDATE
Let’s see how a packet from the Internet gets routed to the host
with IP address a.b.c.249, which is served by Router C. The packet
first arrives at Router A, which delivers it to its local network
(a.b.c.0). The packet is then received by the Netopia Router, which
examines its destination IP address.
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