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Hookup router to Motorola wireless/wifi cable modem?

post #1 of 13
Thread Starter 
Hey guys. I have a motorola wireless/wifi cable modem that I am renting from time warner cable. The speed and wifi distance on this thing sucks. I have a netgear laying around here that I used to use before I got this wireless modem from time warner, Is there anyway to hookup the router with the wireless/wifi modem?
post #2 of 13
Yes the simplest way wold be to place the Netgear behind the Time Warner Device (wired). Then place all of your other devices behind the netgear.

You may run into one obstacle which can be overcome quite simply. If the TWM (time warner modem) has an internal address of 192.168.1.1. Then the Netgear cannot also have an internal network of 192.168.1.1. This would confuse the device and it would not know how to properly route traffic.

Simple fix would be to log on to the netgear device and change the Internal (LAN) network to be 192.168.2.1. Or you could even make it 10.10.10.1.

Just also make sure that the DHCP server on the netgear is set for whatever network you end up choosing. Otherwise the netgear will be on 192.168.2.1 and it will still be telling the devices behind it to be on 192.168.1.1. That won't work out too well -_-

So

==Internet==
Dynamic Public IP (External IP)
==TIME WARNER MODEM==
Internal IP of TWM (192.168.1.1)

External IP of the Netgear router 192.168.1.x) It will get this IP automatically from the Time warner modem
==Netgear router==
Internal IP of Netgear (192.168.2.1)
==Your devices==
Devices will get a DHCP assigned IP from the Netgear in the 192.168.2.x range.

If you have any questions just ask,
-NitroNarcosis
post #3 of 13
its easier than that....set it up wired as NitroNarcosis said.

Find out the IP address on the Time warner device. (example 192.168.1.1)

On the netgear modem, set it's IP address to an adress on the same subnet - ie 192.168.1.2

Turn off the DHCP server on the netgear.

Make sure the DHCP range on the time warner doesn't include 192.168.1.2.

That's it, job done.

this means both devices would be on the same subnet. The netgear would provide the wireless, and the time warner working as a router/DHCP server.
post #4 of 13
Some key items missed.


Disable the radio on the wireless modem. You should have an option to do so. If not, disregard. This prevents any kind of mixed wireless signals and cause interference and performance degradation.


Also, after disabling the DHCP server on the Netgear router, plug the Ethernet into the LAN side. Not the WAN (Also labeled "Internet"). This allows the DHCP from the Modem/Router to pass through the Netgear wireless correctly.
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post #5 of 13
+1 On the other posters options as well.

Specially the part where you have to connect the LAN side of both devices. This would make the Netgear act as a wireless AP instead of being a gateway.(Router)
post #6 of 13
Thread Starter 
THanks for the input fellas. I will try this out tonight after my finals.
post #7 of 13
It is usually best to use the Motorola modem in "bridged" mode and left the Netgear router on default configurations. Look into how to bridge with the specific model number of the Motorola.
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post #8 of 13
Thread Starter 
I'm thinking about just buying a separate modem since I am renting this modem that is provided by time warner... Is this modem any good?

http://www.amazon.com/Motorola-Surfboard-SB5100-Cable-Modem/dp/B00008Y1BX/ref=lh_ni_t

It seems outdated but from the reviews it seems to be legit. I am also using time warner's 20Mbps service.
post #9 of 13
Thread Starter 
I must also add that money is somewhat of a factor right now... I am a veteran and a college student and when we get winter breaks we do not get allowances so I am watching my spending this winter break lol.

Edit: I also saw this on craigslist. It seems like the newer version.

http://losangeles.craigslist.org/lac/ele/3456482239.html
post #10 of 13
Thread Starter 
So I am going to go ahead and list all of the specs of my current network hardwares. I am currently renting this from time warner:

http://www.motorola.com/us/consumers/SBG6580-SURFboard%C2%AE-eXtreme-Wireless-Cable-Modem/70902,en_US,pd.html

But the wifi sucks. So I am thinking about replacing it and getting a separate modem and use my older netgear router. Here is the modem that I am thinking about buying.

http://www.amazon.com/Motorola-Surfboard-SB5100-Cable-Modem/dp/B00008Y1BX/ref=lh_ni_t

And here is an updated version of that modem that I found on craigslist:

http://losangeles.craigslist.org/lac/ele/3456482239.html

Also, here is my router.

http://support.netgear.com/product/WGR614v8

So if I end up buying a separate modem, would it be worth better than the one that I am currently renting?
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