Router says connected to internet but no actual connection

[Kyle_119]

Router model: ASUS (RT-AC68U) Wireless-AC1900

Internet went out 2 days ago in the middle of the night. I attempted to do the general things you do when this happens like make sure everything is plugged in properly and unplugging and plugging in the router and modem and recycling power to both devices. Nothing worked. I can connect to the router no problem just no internet. At the router control panel it says that it is connected to the internet.

When I plug my computer directly to the modem I get internet no problem so I don't think it's my ISP.

Now I have had this problem in the past a couple times but it has always been a fluke when it fixed itself. Fixes were time, having both router and modem off for a period of time, the other was hitting the small reset button on my modem. I have tried both of the previous fixes. I want to know if anyone has any ideas on why this may be happening and what I can do to prevent it from happening in the future. Thanks and I appreciate any help given.

 

[Ralston18]

If you reset the modem it reverted to its default settings. It may, for example, again be trying to assign IP addresses via DHCP. The router should be doing that....

What make and model is the modem? Did you factory reset the ASUS router as well?

First try a different known working ethernet cable between the modem and router just to exclude a troubled cable as a possibility.

Then take a look at the IP's being assigned to your devices. Are those addresses from the modem or router?

My first thought is that your network configuration has gotten mixed up. Doublecheck the modem, router, and network adapter card configurations. See if they all are as you expect.

 

[bradsmr]

Then take a look at the IP's being assigned to your devices. Are those addresses from the modem or router?.

Hi Ralston18, I am the brother of the OP. I checked the router control panel and it is showing the IP's as local IP's and says DHCP next to them. Is this what should be happening? Here's an image: http://i.imgur.com/Zi1v4RQ.jpg

The modem is a Cisco cable modem model number DPC3008.

 

[Ralston18]

Not familar with that layout/presentation per se.

What I think it means is that those are DHCP IP addresses are being provided via the router.

Furthermore, the 192.168.1.x matches what I would expect from the ASUSrouter. (Default IP is 192.168.1.1, subnet 255.255.255.0)

Does the following link match your modem?

http://www.cisco.com/c/dam/en/us/td/docs/video/at_home/Cable_Modems/3000_Series/4022345_B.pdf

If I am correct your modem is only a modem. Are you connecting the modem's ethernet port to the Asus router's WAN port?

Doublecheck your connections and configuration per the user manuals.

If nothing found then please run and post the results of "ipconfig /all" (without quotes) from the command prompt.

Thanks.

 

[bradsmr]

Yes that is the correct modem. The modem's ethernet port is connected to the routers WAN port. All connections are correct and secure. Here is the ipconfig /all from the PC that has a wired connection to the router: http://i.imgur.com/nN7dqLa.jpg

 

[Ralston18]

The ipconfig /all is showing that Windows is using a default IP (169.254.11.255) used when it can otherwise not obtain an IP address.

Your Default Gateway should be the router's IP address (192.168.1.1) unless that has been changed.

Take a look at the adapter settings. Try running "Troubleshoot problems" by right-clicking the network icon most likely in the lower right hand screen corner.

If that does not find and fix things then use Open Network and Sharing Center. Use change adapter settings and then Select your wired adapter. Go into Properties.

Look at your wired adapter settings.

Make sure that Internet Protocol Version 4 (TCP/IPv4) is checked.

I would also uncheck everything related to IPv6 for the time being - even if your ISP is offering that.