NETGEAR DGND4000 User Manual page 122

N750 Wireless Dual Band Gigabit ADSL Modem Router DGND4000
routes. You have to configure static routes only for unusual cases such as multiple wireless
modem routers or multiple IP subnets on your network.
As an example of when a static route is needed, consider the following case:
• Your primary Internet access is through a cable modem to an ISP.
• You have an ISDN wireless modem router on your home network for connecting to the
company where you are employed. This wireless modem router's address on your LAN is
192.168.1.100.
• Your company's network address is 134.177.0.0.
When you first configured your wireless modem router, two implicit static routes were
created. A default route was created with your ISP as the gateway, and a second static route
was created to your local network for all 192.168.1.x addresses. With this configuration, if you
attempt to access a device on the 134.177.0.0 network, your wireless modem router forwards
your request to the ISP. The ISP forwards your request to the company where you are
employed, and the request is likely to be denied by the company's firewall.
In this case you have to define a static route, telling your wireless modem router that
134.177.0.0 should be accessed through the ISDN wireless modem router at 192.168.1.100.
In this example:
• The Destination IP Address and IP Subnet Mask fields specify that this static route
applies to all 134.177.x.x addresses.
• The Gateway IP Address field specifies that all traffic for these addresses should be
forwarded to the ISDN wireless modem router at 192.168.1.100.
• A metric value of 1 works since the ISDN wireless modem router is on the LAN.
• Private is selected only as a precautionary security measure in case RIP is activated.
Advanced Settings
122