User's Manual

To add another router to share an Internet connection, do the following:
This topic covers cases one and two above
Determine the IP address range for your upstream (office or building) network.
To determine the address range by using a Windows computer:
Connect your computer to your upstream network’s router.
Click
Start
,
Run
, type
CMD
, then click
OK
. The command prompt window appears.
Type "ipconfig," then press
Enter
.
TIP
Although you can determine your computer’s IP address in
many ways, this method is quick and relatively easy.
Take note of the IP address. In this example, the IP address is 192.168.100.192.
To determine the address range by using a Mac computer:
Connect your computer to your upstream network’s router.
From the Dock, click
System preferences
, click
Network
, then click
Ethernet
in the window to the left. A network status window opens.
Take note of the IP address. In this example, the IP address is 192.168.100.139.
Example: The above examples show that upstream IP addresses are on the 192.168.100.0 network. (The “0” indicates the entire network.) Your upstream network’s address
may be different. The default address of your new Linksys router is 192.168.1.1. In setting up one router behind another, you must make sure that the local network on your new
router is different than the network of your upstream router. In the above example, because the default local network on your Linksys router 192.168.1.0 is on a different subnet
than the office network’s 192.168.100.0, you will be able to place your Linksys router behind the other router.
Connect an Ethernet network cable to a LAN/Ethernet port on your upstream network to the yellow Internet port on your router.
CAUTION
Connect the upstream network to your router’s yellow Internet port,
not
one of the blue Ethernet ports. If you connect to an Ethernet port,
you create IP addressing problems for the office network.