38
Setting Up: Advanced
Linksys E-Series
To add your router to an existing router or gateway
In most cases, you can easily add your router to an existing wireless network by
running Cisco Connect . If you are unable to set up the additional router using
the instructions below, see “To share an Internet connection” on page 38 or “To
extend your network” on page 39 .
To add a router to your existing wireless network:
1.
Insert the Cisco Connect setup CD into a CD/DVD drive on your computer,
then follow the on-screen instructions .
2.
When you are told to connect your router’s
Internet
port to the
LAn/
Ethernet
port on your modem, connect your router’s
Internet
port to
the
LAn/Ethernet
port on your existing (upstream) router or gateway .
3.
Follow the on-screen instructions until setup is complete .
To share an Internet connection
noTE
This is a complex process, so this procedure assumes that you have
some networking knowledge .
To add another router to share an Internet connection:
This topic covers cases one and two above
1.
Determine the IP address range for your upstream (office or building)
network .
To determine the address range by using a Windows computer:
a.
Connect your computer into your upstream network’s router .
b.
Click
Start
,
Run
, type
CMD
, then click
oK
. The command prompt
window appears .
c.
Type
ipconfig
, then press
Enter
.
TIP
Although you can determine your computer’s IP address in many
ways, this method is very fast .
d.
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:
a.
Connect your computer into your upstream network’s router .
b.
From the
Dock
, click
System preferences
, click
network
, then click
Ethernet
in the window to the left . A network status window appears .
c.
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 .
2.
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 .
