Netopia R910 User Reference Manual page 184

Ethernet router for dsl and cable modems
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B-184 User's Reference Guide
Network Address-Subnet Mask-----via Router------Port--Age--------Type------
----------------------------------SCROLL UP--------------------------------
0.0.0.0
127.0.0.1
a.b.c.128
a.b.c.248
---------------------------------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 R910, which examines its destination IP address.
The Netopia R910 compares the packet's destination IP address with the routes in its IP routing table. It begins
with the route at the bottom of the list and works up until there's a match or the route to the default gateway is
reached.
When a.b.c.249 is masked by the first route's subnet mask, it yields a.b.c.248, which matches the network
address in the route. The Netopia R910 uses the connection profile associated with the route to connect to
Router C, and then forwards the packet. Router C delivers the packet to the host on its local network.
IP Routing Table
0.0.0.0
a.b.c.1 WAN
255.255.255.255 127.0.0.1 lp1
255.255.255.192 a.b.c.128 WAN
255.255.255.248 a.b.c.248 WAN
3719
Management
6423
Local
5157
Local
6205
Local

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