Question about Linksys EtherFast Cable/DSL Router with 4-Port Switch [ BEFSR41 ] (104828)

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Router connection I cannot find my instructions for the way the cables should be connected. I run on a cable modem and all was fine until I removed the cables to rearrange my equipment and now I cannot get the router connected correctly and don't know what I am doing wrong.

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The cable modem lead should plug into the internet socket, then a lead rj45 should come from any of the other 4 ports to your lan network card in the back of your pc and thats it, all the settings will be the same as before.

Posted on Jun 06, 2007

  • andrew pester
    andrew pester Jun 06, 2007

    if you need to know more, you can get the pdf manual here



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Can not connect to the internet through router if i hook up the internet straight to computer it works but when i try through the router the computer has no internet connection but it picks up the router

Some cable modems look for the MAC address of the computer until reset. You can either enter the MAC address from the PC into the MAC spoofing setting on the router OR disconnect and unplug the cable modem for 24 hours and start over. First, plug in the cable modem and connect the cable. 2nd, plug the router cable into the modem and router and plug in the router's power supply. Then connect the computer and it should work fine.

Feb 27, 2011 | Computers & Internet

1 Answer

Cable modem internet works when directly plugged into desktop, but when run through the router, no connectivity

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.

kb4682-001_en.png 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
kb4682-002_en.png 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.

: 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 kb4682-005_en.png.

Step 4:
Click MAC Address Clone.


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


Step 6:

Click kb4682-012_en.png.

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.



If the Internet IP Address is all zeroes ( click kb4682-008_en.png first then click kb4682-009_en.png. If the Internet IP Address is still all zeroes ( perform a power cycle. For instructions, click here.
If the IP Address starts with 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.

Sep 28, 2010 | Linksys Wireless-G WRT54G Router

1 Answer

Can't connect to the internet through the router. It worked fine until my ISP came out and changed the modem. I can connect with modem connected to Mac but not with modem connected to router.

If this is a cable modem, you need to restart the modem every time you change whatever is connected to it. Every device has a MAC address. Cable modems lock onto a MAC address that is connected to it and will only communicate with that device until you reset it by restarting. Some Comcast modems have a battery pack that must be removed in addition to unplugging it from the wall.

If it's DSL them maybe there is a username/password entered in the management console of the router.

Jun 01, 2010 | D-Link DIR-625 (790069292637) Wireless...

1 Answer

Initial Wireless Router connection problem.

Are you trying to install the router.You can do it manually
without the CD.
MAke sure that your computer is able to go
online through the modem.
If your computer is able to go online
through the modem
Then you need to connect the computer to the
router ad the modem to the router.
open the set up page of the
router and change the settings of the router according to the
Click Here for step by step by instructions

Jan 16, 2010 | Belkin Computers & Internet

1 Answer

Dell TrueMobile 2300 Router wont connect to My cable modem

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

Jun 20, 2017 | Computers & Internet

1 Answer

I have DI-604 in line between Windows Vista computer and cable modem. Works fine. Bought DIR-615 (wireless). Several places instructions say, ""Insert the DIR-615 CD into computer and click Install Router....

Contrary to the many warnings not to install the router before starting the installation with the CD, I got the installation to complete only AFTER I installed the router inline thusly:

1. Power everything off.
2. Remove DI-604.
2. Install and connect 615 router to computer and to modem.
3. Apply power to router and modem.
4. Apply power to computer and wait until Windows loads.
5. Insert 615 installation CD.
6. Follow the directions.

Nov 22, 2009 | D-Link DIR-615 Wireless Router

1 Answer

Router cannot connect to the internet.

Turn everything off:
Cable modem unplug the power to the modem if it has a battery remove it.
Router unplug the power to the router
Shutdown any and all computers connected to the router

Turn everything on in this order:
Cable modem wait until all the lights are on but the internet act light
Router wait until the lights goes through it's test cycle and the internet light (wan) is on.
Boot up the computers one at a time after the first computer is fully loaded go to the next computer

Hope this helps


Feb 27, 2009 | Arris Touchstone 450a (CM450) Modem

1 Answer

Modem usb connection

You can only use the USB connection or the ethernet connection to get it work.  It won't work on both.  
What type of router are you using?

Sep 13, 2008 | Arris SURFboard SB5120 Modem

1 Answer

D link cd

  1. Then u have to setup ur router first
  2. Turn off the power on your computer.
  3. Securely connect an end of an Ethernet cable to your computer, as shown.
  4. Securely connect the other end to any of the router's four LAN ports.
  5. Connect a second Ethernet cable from the router's single WAN port to the modem.
  6. Make sure the modem is connected to the jack or cable to the Internet that was set up by your ISP.
    1. Start your network in this order:
      1. Turn the modem power off.
      2. Turn the router power off.
      3. Turn the modem power back on. Wait two minutes until the lights are stable.
      4. Turn the router power back on. Wait one minute until the lights are stable.
      5. Turn the computer power back on.
    2. Open an Internet browser, and type If a "Configuration Assistant" appears immediately, then do not follow the rest of these instructions. Follow the Configuration Assistant instructions, instead. Once you are finished, test your Internet connection by browing online,
    3. Type admin for User Name, and password is blank. (do no type any thing for password.)
    4. Click OK. This logs you into the router.
    5. Click the Home tab and click the WAN button. Dynamic IP Address is the default value, however, if Dynamic IP Address is not selected as the WAN type, select Dynamic IP Address by clicking on the radio button. Click Clone Mac Address. Click on Apply and then Continue to save the changes.
    6. Power cycle the cable modem and router:
      • Turn the cable modem off (first)
      • Turn the router off
      • Leave them off for 2 minutes**
      • Turn the cable modem on (first)
      • Wait until you get a solid cable light on the cable modem
      • Turn the router on
      • Wait 30 seconds

      that would fix your problem..
      in case if yoy have any problem revert back with your internet service providers name.(isp).

Dec 06, 2007 | D-Link RangeBooster G WBR-2310 Wireless...

1 Answer

Connection problem between modem router and hub

Sounds like you may need what is called a "Crossover Cable' connecting your router to your hub, or if either device has an uplink port, use it on one device to connect to normal port on other device. Here are instructions for making your own cables:

Dec 08, 2006 | Kingston EtheRx Networking Switch

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