User Manual

Advanced Settings
89
N600 Wireless Dual Band Gigabit Router WNDR3700v4
6. Type the password (or key) for your Dynamic DNS account.
7. Click App
ly to save your configuration.
Static Routes
Static routes provide additional routing information to your router. Typically, you do not need
to add static routes. You have to configure static routes only for unusual cases such as
multiple routers or multiple IP subnets on your network.
As an example of when a static route is needed, consider the following case:
• Y
our primary Internet access is through a cable modem to an ISP.
• Y
ou have an ISDN router on your home network for connecting to the company where
you are employed. This router’s address on your LAN is 192.168.1.100.
• Y
our company’s network address is 134.177.0.0.
When you first configured your router, two implicit static routes were created. A default route
was cre
ated 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 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, t
elling your router that 134.177.0.0 should be
accessed through the ISDN router at 192.168.1.100. In this example:
• The Destina
tion IP Address and IP Subnet Mask fields specify that this static route
applies to all 134.177.x.x addresses.
• The Gateway IP Address f
ield specifies that all traffic for these addresses should be
forwarded to the ISDN router at 192.168.1.100.
• A met
ric value of 1 works since the ISDN router is on the LAN.
• Private is se
lected only as a precautionary security measure in case RIP is activated.