Netgear DGND4000 User Manual download pdf (Page 122)

Advanced Settings

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:

• Y

our primary Internet access is through a cable modem to an ISP.

• Y

ou 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.

• Y

our company’s network address is 134.177.0.0.

When you first configured your wireless modem router, two implicit static routes were

crea

ted. 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

134.1

77.0.0 should be accessed through the ISDN wireless modem 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 wireless modem router at 192.168.1.100.

• A met

ric value of 1 works since the ISDN wireless modem router is on the LAN.

• Private is se

lected only as a precautionary security measure in case RIP is activated.

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Netgear DGND4000 User Manual Page 122