I want to plug in another wireless router into my surfboard modem and have the wireless router work as well as the surfboard. Is there a way to do this successfully?

No offense but did you plug-in correctly, most of time we have to push tight for plugging in.

Contact your local Internet Service Provider for assistance with your cable-modem.

Or, if you have connected a wireless-router to the cable-modem, and now you are trying to connect a wireless-device to the wireless-router, that's where a "security-key" is needed.

I was banging my head for 2 days with about 35 different configurations and finally tried the following and it worked just fine. Also, tried connecting 3 computers and they all connected with "NO" issues. Even connected wireless with "NO" issues. Now I am at 20mb download speed...J compared to AT&T 1.5mb download speed.

This is my DLINK model -> (DIR-601 Wireless N 150 Home Router Wireless router)

1. Reset your Comcast Surfboard Cable Modem by unplugging it for 5 minutes.

2. Then reset your DLINK Router to the manufactures default settings. Then Unplug DLINK Router for 1 minute then plug it back in (Just plug your cat5 cable into port 1 and connect it to your computer) there should not be anything else plugged into the DLINK Router at the time you make the changes. Just 1 computer can be connected.

3. Went into the DLINK configuration 192.168.0.1 and changed the PPPOE setting that I was using for my AT&T Modem to Dynamic IP (DHCP). Once you make the changes save them and then unplug your DLINK Router it's off.

4. Turn on Comcast Surfboard Cable Modem and wait until all lights are on. Now plug in a cat5 cable from the Surfboard Comcast modem (NOT A CROSSOVER CABLE LIKE THE CD INDICATES) to the INTERNET port of your DLINK Router. Now turn on your DLINK router.

5. Then turn on your computers or restart them and it will pick up IP Addresses from your DLINK Router

you may be suffering from mixed Cat 5 and Cat 6 cabling.
The wiring is slightly different and they don't work well when mixed in routers and modems etc. One or the other will work , but when they're mixed it'll do what you have going on here...

I would recommend wiring everything with cat 6 ethernet cabling. Look on your cable and you will find the labeling on the outer casing.

The only thing that you need to setup on your Linksys for it to work with cable is to make sure that DHCP is enabled on the router.  You will need to plug your router into the modem via the ethernet cable and then plug your neighbors pc into a link port on the router (the cable modem plugs into the internet port)  You will also need to follow the reboot procedure.  Power everything off. 
1: Turn on the surfboard and wait about 1 minute for the surfboard to make a connection with your ISP (the link light should come on).
2:Turn on your router and wait for your router to sync up with the surfboard . 3: Turn on your computer. Whenever you plug anything into a cable modem, you must recycle power to the modem.  It "remembers" the last device that was plugged into it, so it's memory needs to be cleared.

Make sure that you have the ethernet cord from your modem plugged into the WAN/Internet port on your router. Then unplug the power cord from your cable modem and plug it right back in. After the modem fully comes back online, unplug the power cord on the wireless router and plug it back in. wait 30 - 60 sec and then try and connect.

Most cable companies only allow one active"CPE" at a time for internet access. All this means is when you change what is connected to the cable modem you must always reboot the cable modem to allow access.


Hope this helps. Let me know if it does not work.

Please rate.

are you sure your hooking the comcast modem in the right place?

i doubt it will work. most times the cable companies give you a modem/router all in one box. the problem is there in no inbound connection to recieve an internet signal other than the cable cord connection. with the dsl modem you will need a seperate router. they cost around $40-50 on avg

SURFboard SB4220 Modem is not a wireless modem/router, therefore, it doesn't have a password for wireless connection.

If you're using a wireless router, then that is where the password for the wireless connection is configured. You will need to open the router's setup page to verify the wireless security.

The router is the one connected to the modem. Usually, it has antennas.

To help you further, what is the brand and model number of your router, if you have any.

Check the socket in either the router or the PC. I had the same problem, only with my modem. When I inspected the port, the pins were misaligned, causing it to drop a connection. I corrected mine with a screwdriver, which is not ideal but it works.