Netgear DG834v1 – ADSL Modem Router Manual De Referência

Advanced Configuration

6-9

Static Routes provide additional routing information to your router. Under normal circumstances, 
the router has adequate routing information after it has been configured for Internet access, and 
you do not need to configure additional static routes. You must configure static routes only for 
unusual cases such as multiple routers or multiple IP subnets located 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 router on your home network for connecting to the company where 
you are employed. This router’s address on your LAN is 192.168.0.100.

•

Your company’s network is 134.177.0.0.

When you first configured your router, two implicit static routes were created. A default route was 
created with your ISP as the router, and a second static route was created to your local network for 
all 192.168.0.x addresses. With this configuration, if you attempt to access a device on the 
134.177.0.0 network, your router will forward your request to the ISP. The ISP forwards your 
request to the company where you are employed, and the request will likely be denied by the 
company’s firewall.

In this case you must define a static route, telling your router that 134.177.0.0 should be accessed 
through the ISDN router at 192.168.0.100. The static route would look like 

.

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. 

If your ISP assigns a private WAN IP address such as 192.168.x.x or 10.x.x.x, the 

dynamic DNS service will not work because private addresses will not be routed on the 
Internet.