Cable connected but no internet - Dell Dimension 3100 PC Desktop

Connect the router's WAN port to your cable-modem.
Connect the computer to one of the LAN ports.
No other "setup" is needed.

I have used Cat5e plenum Cable for my internet connection and I faced same problem. If you are just concerned with internet access and not access between devices on your LAN, then you just need to connect the first router LAN to the WAN port of the second router with the mentioned Ethernet cable. It is also in your best interest to make sure the IP ranges are different between the two DHCP servers you now have. That is, make sure they are not on the same subnet or serving up conflicting IP's.

Most cable Internet Service Providers (ISP) use a Media Access Control (MAC) Authentication to establish Internet connections for end-users. A MAC address is a unique 48-bit (6-byte) integer that is attached to an Ethernet NIC for each computer. To set-up your Linksys router to a Cable ISP, you have to do MAC Cloning. MAC Cloning is a procedure which enables a router to copy the MAC address of the PC that's registered with the ISP.
To setup a Linksys router with Cable connection you need to perform five steps:

1. Verifying Internet Connection
2. Connecting the Devices Together
3. Checking the Router's LEDs
4. Configuring a Linksys Router for a Cable Connection
5. Power Cycling

NOTE: Before proceeding, use the computer that can go online when connected to the modem and follow the steps below.
Verifying Internet Connection
Connect the Broadband modem to the computer using an Ethernet cable without the router installed and make sure that the Internet connection is active. If it is not, contact your ISP. If it can go online, the PC connected to the modem is the one that's registered with the ISP.

NOTE: The image may vary depending on the computer and modem you're using.
Once an active Internet connection is established through the modem, connect the modem and the computer to the router by following the instructions below.
Connecting the Devices Together
After ensuring that you have an active Internet connection, connect the modem to the router's Internet port and the computer to any of the four Ethernet ports. For instructions, click here.
After connecting the devices, check the LEDs by following the instructions below.
Checking the Router's LEDs
The Linksys router's front panel will indicate the status of the connection. After connecting the broadband modem to the WAN or Internet port, the computer to an available numbered port and powering on the router check the lights on the front panel of the router. For instructions, click here.
After checking the router's LEDs, configure the router for cable Internet. For instructions, follow the steps below.
Configuring a Linksys Router for a Cable Connection
For Telstra Cable internet users, please contact Telstra to confirm if your internet connection is using DHCP or HB (Heart Beat) signal. There should be no other machine running HB client upon doing this procedure.
Step 1:
Access the router's web-based setup page. For instructions, click here.


NOTE: If you are using Mac to access the router's web-based setup page, click here. If you forgot your IP address, click here. If you forgot your router's password, click here.


Step 2:
When the router's web-based setup page appears, click the drop-down arrow under the Internet Connection Type field and select Automatic Configuration - DHCP.
(a) If you are NOT using Telstra HB, proceed with DHCP setup.

NOTE: If you are a Telstra Cable internet user and you're using WRT120N, WRT160N v1, WRT320N or WRT610N, please select Telstra Cable.
(b) If you are using Telstra Cable, proceed with the following setup. Obtain your user name and password from Telstra. Please disable any HB client that might have been previously running on the PC after the router is configured.

Step 3:
Click .

Step 4:
Click MAC Address Clone.

Step 5:
Select Enabled and click Clone My PC's MAC.

Step 6:

Click .


Step 7:
Click Status. Check the value of the Internet IP Address. If the Internet IP Address has numbers, this means the router has been properly configured. You should now be able to access the Internet. If you're not online, perform a power cycle to synchronize the router with the modem. For instructions, click here.

NOTE: If the Internet IP Address is all zeroes (0.0.0.0) click first then click . If the Internet IP Address is still all zeroes (0.0.0.0) perform a power cycle. For instructions, click here.
If the IP Address starts with 192.168.1.xxx or if it has the same first three numbers (octets) as the router's IP address, change the router's LAN IP address to a different LAN segment. For instructions, click here.
Once the router is configured, perform a power cycle. For instructions, follow the steps below.
Power Cycling

Step 1:
Shutdown the computer.

Step 2:
Unplug the router's power cable.


Step 3:
Unplug the Broadband modem's power cable and wait for 30 seconds.


Step 4:
Plug in the Broadband modem's power cable and wait for its lights to appear stable.


Step 5:
Plug in the router's power cable once the modem's lights appear stable.


Step 6:
Power on the computer on and test the Internet connection.
NOTE: If you're not online after performing this procedure, you may need to upgrade the firmware of the router.

You need the Ethernet Cable in your Router to be able to connect to the Internet.That is the only way your going to be able to have Internet.It will not work without the Ethernet cable.

You are most likely making a mistake in the setup instructions.

If you can access the configuration page of your belkin router you have to copy the MAC address of your computer to the router. The router has the capability to clone the MAC address. It's because if you have a cable internet connection the MAC address is registered in the server.

Try turning off the router for 30 secs, then power it up again.
Then try connecting a LAN cable from the computer to the router and see if you can connect to the Internet.
If you can connect to the Internet then -
With the LAN cable open a browser and type in the configuration URL and check the Wireless settings, then check and/or the wireless card settings (it should have the router's SSID and encryption settings etc.)
Also install the latest wireless card driver.
Then test the wireless and Internet connection. If this doesn't work -
Next connect the computer with a LAN cable to the cable or DSL modem to see if you can connect to the Internet.
If you cannot get an Internet connection with the LAN cable, contact your ISP and get them to test the connection to your modem.
If the modem and Internet is OK and you still cannot get a wireless connection then the problem could be a faulty wireless router.

With a cable broadband connection, the cable line comes into the cable modem. The cable modem does the work changing the cable signal to a network connection and sends an I.P. address to the computer. With some cable internet providers you can hook the network cable into the in port on a router, wireless or wired, then hook up computers to the router. At this point the router gets the IP from cable and uses it's own IP routing for your internal network. Some broadband providers control your access by the computers mac address which registers with the vendor. If this is the case then the easy way to make it work is to get a router which can clone a mac address so the vendor still sees the same mac address.

On which port of the D-link router did you plug the WRT160N router?

Do this setup.

Disconnect the WRT160N from D-link.

Connect a computer to port 1 of the WRT160N. Access the setup page by typing 192.168.1.1 on the address bar. you may need to type in the username and password for WRT160N. on the setup page Change the LAN IP address from 192.168.1.1 to 192.168.2.1. save the settings.

Connect a cable from port 1,2,3 or 4 of the D-link router to the Internet port of the WRT160N. turn off everything then turn them on starting from cable modem>D-link >WRT160N then computer.

You should be able to access the internet.

It depends... If you use a router for the Internet then you don't need any cable, just turn on the router and then go to the PS3 and configure the PS3 to work with the router. If you have wired internet, then you will need an Ethernet cable, but since the PS3 comes with an Ethernet cable, you don't need to buy one. With the Ethernet cable, you have 2 options. If your modem has an Ethernet port, then just connect the PS3 to the modem directly. If the modem doesn't have an Ethernet port or direct connection won't work, then you can use Internet Connection Sharing to connect your PS3 to the Internet.