Lost my LAN connections, still have wi-fi

I was gone for a week on vacation, and I know the power went out during some storms. I thought everything was ok because my wireless connection to my MacBookPro and iPhones was working fine. But then I noticed that my TiVo and other stuff that I had connected to the LAN ports weren't connected.
I have my cable modem (Arris) from Time Warner Cable that has my digital phone and internet connected to the Airport Extreme, then the 3 LAN ports are connected to TiVo and a Control4 home automation controller.
I've reset the AEX a couple of times, unplugged it, unplugged the cable modem, etc...When the AEX comes on, all the LAN green lights flash on and then go off. I was able to plug the MacBookPro into one of the LAN ports and get it working through LAN for a minute by fiddling with the Airport settings, but I'm not even sure what I did and I haven't been able to get all 3 working. But the wireless works just fine.
I'm fairly sure that nothing's broken, just not doing something in the correct order to get those other ports working. Any ideas?

A couple of years ago, a brownout (and power surge) damaged an Airport Extreme and two Airport Expresses on our network. Without notice, they started failing some of the time, but not all of the time (randomly dropping connections). This issue was very difficult to trouble shoot (it took a couple of months to do this, and one of the units went out of warranty during this time period). When connected to an Apple Store network at the local Genius Bar, they didn't work at all, and so Apple replaced all three, even though one was out of warranty. Kudos to a great company for taking care of the problem, but it's important to note that I also had called tech support just before the warranty expired and documented this problem.
Unfortunately, when I reinstalled the replacements on the home office network, they still didn't work. with more help from AppleCare telephone tech support out, we determined that all three 10/100 switches on the network also had been damaged in the surge, though not the cable modem. I took the opportunity to upgrade the switches to gigabit ethernet models and later to "n" Airports.
Troubleshooting network problems can be a challenge, and it requires thorough, organized testing. Good luck.

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A strange one.
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The LAN connection is always fine - good speed, no drop-outs, etc
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ticklos wrote:
A strange one.
I have both WiFi and LAN connections to my HH3 for different computers
The LAN connection is always fine - good speed, no drop-outs, etc
The WiFi connection however is a nightmare. It works for a few hours and then the computer drops the internet connection.
It is not the WiFi connection to the HH3 as I can still get to the HH3 web page but any internet address gets a "DNS not found" error.
In this state, the LAN connection still works fine. I can browse the Internet fine just not from a WiFi connection.
The only solution is to reset the HH3 fully (a disconnect/reconnect of the internet connection doesn't help)
Any ideas?
Chris
Hi there,
It sounds like you need to change the wireless channel on your HH3.
If you're on Windows then you're going to need inssider 2 or if you're using a Mac, then you'll need to download istumbler
Download whichever one of those is appropriate to your OS and do a scan for wireless networks close to you and you will be able to see which networks are operating on which channels and change to a less congested channel, if need be
I hope this info helps

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Lost my LAN connections, still have wi-fi

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