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Need help connecting to ISP routers in same house without DNS conflict.

post #1 of 9
Thread Starter 
So I hope that makes sense, but let me elaborate. My ISP is called CenturyLink (Qwest) They provide a router with service, it connects to the phone jack in the wall RJ-45 (I think) then provides 4 Ethernet ports and wireless connectivity. The wireless is pretty weak though. Instead of buying a second more powerfull wifi router, I have an extra stock ISP router left over from my old house. Its the exact same model number as the new one I got for this house.

I have router1 connected in bedroom and providing internet to my roommate. I however want to take router2 and connect it to the phone jack in the living room to provide a internet connection via Ethernet to my gaming lappy. When I tried to do this both routers stopped working and my PC came back with a DNS or something not responding. I assume its because both are trying to establish a dominate service for this house. Networking is not my strong suit at all. So is there a way to connect both in the same house? Some sort of settings I can tell the second router to have that wont conflict with the one in the bedroom? Sorry if this is a bit confusing best I can explain it. Thanks for any help.
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post #2 of 9
Since the one you're trying to connect has a phone jack, it won't work. It's a combination modem -and- router. No real way around it other than to buy an ethernet hub redface.gif
post #3 of 9
Short answer...Won't work.
Longer answer...The modem/routers supplied by ISPs are locked up pretty solid. No way to make changes to most of their settings. Your best bet is to buy a WiFi router and daisy chain it to your current ISP's modem/router.
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post #4 of 9
You need to connect the routers together like kyfire said.

This can be done either wired or wirless, another option could be powerline adapters howver?
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post #5 of 9
Can you please provide the model of your router?

This is because there might be a slight chance you can install custom firmware on your router to bypass restrictions of your router implemented by your ISP

Custom firmware can allow you to use another router to "repeat" signals from the first router.

Source
See if your router is supported
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post #6 of 9
Thread Starter 
So thanks for the replies guys. I did daisy chain them together. I disabled the wifi on the modem, and have everyone on the 5GHz netgear, except my roommate who is hardwired. Ping in games significantly improved but I still feel it could be better. I disabled WMM. However I cant install the custom firmware as my device is not listed. Its a Netgear WNDR 3400 v3 Is there any better router for the money? I payed 79.99 plus tax and can still return it if a better router can be had for the same money or less.
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post #7 of 9
you can't connect two routers to the phone line - the modem's will conflict and bring each other down. Thats why you lost the internet with both connected. Each modem needs a separate line to terminate.

As for trying to achieve what you're after, you can hook both up with a network cable as has been said, or of the firmware allows, set the second one up as a wireless repeater. Hard wiring the routers together may be better for pings though, if you plan to game on it. You'd have to set the second router to the same subnet as the first, and disable the DHCP server on it too. And it would be best having the wireless on a separate channel to avoid conflicts with your existing router.
post #8 of 9
Side note, a lot of browsers will erroneously report 'DNS not responding' when the entire link is down. While this may be true, the issue is not DNS resolution but a lower layer connectivity issue.
post #9 of 9
Having 2 routers on the same Rj-45 is like having 2 fax machines on the same line both sending signal. Both are trying to send/receive and nothing gets done.

You want to have one router on bridge mode to connect to the other. The routers need to have different IP addresses as well.

For example setting router1 = 192.168.0.1 , router 2 = 192.168.1.1

further reading: http://kb.netgear.com/app/answers/detail/a_id/110/~/scenarios-when-you-need-to-configure-your-modem-in-bridge-mode

http://www.dd-wrt.com/wiki/index.php/Wireless_Bridge

other brands:
http://support.asus.com/FAQ/Detail.aspx?SLanguage=en&no=42392BBD-29F7-D0C7-6E04-BA444E44B750&m=RT-N66U%20%28VER.B1%29
http://kb.linksys.com/Linksys/GetArticle.aspx?docid=28cee6a2fb0d4176a2210942d1d5836c_Setting_up_the_Linksys_E4200_in_bridge_mode.xml
http://www.belkin.com/us/support-article?rnId=37
http://www.tp-link.us/article/?id=74
Edited by AlphaC - 8/14/13 at 5:44pm
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