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Matt HodgeFlag for United States of America

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Setup router as access point - no internet

Hi - We have a cable modem/router (no wifi) at the office, so I setup a Linksys E1200 to be used as an access point for wifi. Being that the cable router has DHCP enabled, I disabled DHCP on the E1200.  I attached a LAN cable from a port (not the internet port - one of the other 5) on the E1200 to a non-internet port on the modem. So when it was first setup, it worked just fine. Then the next day it didnt work, we could connect to it, but no internet. We'd pull the plug on it, and it would again start working, but then the next day, would stop working. I could get into the configuration of the router via ip address, and everything looked fine, but until its restarted daily, it wont work - If anyone has any ideas on this it would be greatly appreciated.
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Kimputer

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Here is a great solution for access points.

https://www.experts-exchange.com/questions/27902489/Wireless-Routers-Networing.html

Not expensive and very reliable and easy to set up.
Exactly how did you set it up? If you want to use a router as an Access point, you would connect it to your LAN using it's LAN port. Don't use or connect it's WAN port. It will the act just as an AP.

Also make sure it's IP is different from that of your cable router, but within the same subnet, and it should also not be inside the router's DHCP scope.

So if your router's IP is 192.168.0.1, and it's DHCP scope is 192.168.0.10 - 192.168.0.254, then I suggest the IP of the AP should be set to 192.168.0.2.

Then make sure your AP is up-to-date in terms of it's firmware.
Open up a command prompt and look at the IP address.

If you're getting something like: 169.x.x.x then you're getting a bad IP address.

If you're getting a 172.x.x.x, 192.x.x.x or 10.x.x.x then you're getting a good IP address and the issue is something else.

If it were me, I would setup DHCP on the Linksys and pull an IP address from that instead of directly from the cable modem.  Try that and see if it works.  

Lastly, whenever I run into unexplained issues like that, you have to reboot it in a certain way.  Unplug the modem then the wireless router.

Wait about 15 seconds.

Plug in the modem, let it come up all the way then plug in the wireless router.
Have you assign a static internal IP address (outside the DHCP scope of your cable router) for Linksys E1200 and set your Linksys E1200 in bridge mode?

http://www.linksys.com/us/support-article?articleNum=143751

I have similar setup before but my Linksys router is E2500.

Also, run the following command and post back the results from a wireless client PC for both working and non-working status.

   ipconfig /all