Can't connect to internet

The MacBook had an IP of 192.168.1.71 - same as the mini. By clicking on Renew DHCP Lease, it's switched to 192.168.1.73 and is connecting to the Internet again - YEAH!

I can't find another device that's connected with 192.168.1.71, which is what the Mac mini is using. The mini is set to Using DHCP. Clicking renew lease still shows 192.168.1.71. And it's still not connecting.

I just thought of something. I have an Eye-fi card that uploads to the computer wirelessly. It stopped working wirelessly last week. I guess it has a IP address. I'll see if I can find it.

Thanks for all your help, so far! We're getting there. I'm now sure it's something with the IP address, but what? Is there anyway to force a new IP address?

I set the IP manually, but it didn't help.

I notice that in the TCP/IP tab of the Network System Preferences app there is no entry for router IP. That must mean something.

The AirPort Express is version 7.6.1, which is up to date.

Thanks again for all your time and ideas. I've learned a lot and made some progress.

Yes, I used DHCP with a Static IP.

To be a little clearer (I hope) I went to System Preferences > TCP/IP > ConfigureIPv4: Using DHCP with manual address. The Router area underneath does not show an IP address.

If I change ConfigureIPv4: to Using DHCP and apply the setting, the Router area underneath still does not show an IP address.

Thanks.

I'm sorry that my response is so late. Work is a bit hectic and we have a work around to this problem by using an old MacBook to connect to the Internet, so I'm slacking off on fixing this.

When I maually added the router IP on the mini in System Preferences > Network > Advanced > TCP/IP (Configure IPv4: Manuall) all the buttons on the Network Diagnosis app went red, so I put the Configure IPv4 setting back to DHCP. Leaving it there gives me four green buttons up to and including ISP.

Sorry I am not being very helpful. I am completely flummoxed. Everyother device in the house connects and this one just upped and stopped.

IP: I don't want to give it out, but it's not 192, or 10 to start

Subnet Mask: 255.255.255.0

Router: 192.168.1.254

AirPort Utility reports that the router mode is off (Bridge Mode). The other options are DHCP & NAT or DHCP. Would this make a difference?

Thanks.

Message was edited by: MikeV.

I (am guessing here) that I had just put in the modem IP that the ISP gives me.

In System Preferences > Network > Advanced > TCP/IP (Configure IPv4: Manual) I went back and used

IP: 192.168.1.84

the other settings are

Subnet Mask: 255.255.255.0

Router: 192.168.1.254

and the result is still the same - green lights to ISP, red on Internet and Server.

> I wonder, your ISP wouldn't be using Proxies somehow? Did you check the others for that?

Proxies don't seem to be an issue. The other devices are not set to use proxies.

This morning i compared the AirPort Express settings on the mini with those on the MacBook. They are identical. I then compared the Network System Preferences on the mini with the Macbook. The only difference is the mini's IP address is 192.168.1.67 and the MB's is 192.168.1.65.

When I run Network Diagnositics, the green lights are on up to ISP and the Internet and Server lights are red. Occassionally this morning, while cycling through the diagnostic steps, the Internet and Server lights would turn orange and sometimes, after picking the network (SSID) name and continuing, the Internet and Server lights would turn green and a connection would be made to the Internet - usually long enough for a single web page to load. Then the Internet and Server lights will stay green, but no other pages load.

Still stumped.

BDAqua, thank you for your suggestions, patience and tenacity.