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IP Address Conflict Message Help! - Page 2

post #11 of 22
Assigning static to everything is a PITA.

Reboot the router.
If necessary, do a ipconfig /release then ipconfig /renew on any problematic hosts which remain.
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post #12 of 22
Open an elevated command prompt, type ipconfig /release, press enter, then type ipconfig /renew, press enter. Do this for each computer.

If that does not work, lets assign the problematic computers all different static ip address in Windows. For example:

your router's ip address is 192.168.1.1

- computer A: 192.168.1.115
- computer B: 192.168.1.122
- computer C: 192.168.1.129
- computer D: 192.168.1.136

subnet mask: 255.255.255.0
default gateway: 192.168.1.1 (same as router)

preferred DNS server: 192.168.1.1 (same as router)
Edited by Riou - 12/27/10 at 12:51am
post #13 of 22
Thread Starter 
I know assigning static ip to my computers will help, but how come this problem didn't occur before? I have been letting my previous router assigning ip to my computers and nothing was wrong. I have checked that all of my computers have obtain ip automatically checked so what could go wrong to cause the ip conflict?
    
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post #14 of 22
If you reset the router and temporarily dont change any settings (Security, ect), do you still get the message
Just out of curiosity do you use a wireless extender/ wireless repeater in your network?
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post #15 of 22
Thread Starter 
I don't use any wireless extender/ repeater. I have tried to reset the router and setup pppoe with wireless wpa2. It would fixed it temporarily and then it started all over again.
    
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post #16 of 22
I am necroing this thread because i have a similar issue, but it was no adequately explained thus far.

So I have a desktop that is connected CAT5e to a laptop. The desktop is running Win7 HP x64 and the laptop is running XP Pro x86. The laptop has a wireless adapter, and I had it connected to the network, and then bridged the connection to my desktop. (YES, I am too cheap to buy a wireless PCI card). The router is way to far away to run CAT5 to the desktop, so it has to be wireless.

Anyway, both the desktop and the laptop will occasionally give an error "Windows has detected an IP address conflict. Your computer is using the same IP address as another device on the network." My connection then promptly drops on one or both of the comptuers.

Now, this is annoying because DHCP should resolve this conflict. I've tried rebooting ALL DEVICES on the network (took a freaking half hour just pushing power buttons) and the router and modem too. Same issue. At this point, I want to assign static IP addresses to everything and be done with it. But how do I do this? Last time I did it in Windows on a device with no IP address issues, it simply wouldn't connect until I reverted back to auto settings.

Anybody help me?
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post #17 of 22
Quote:
Originally Posted by Buster View Post
I don't use any wireless extender/ repeater. I have tried to reset the router and setup pppoe with wireless wpa2. It would fixed it temporarily and then it started all over again.

PPPoE is ANCIENT and I'm very surprised your ISP uses it!!! Are you sure you need PPPoE ?

Changing from WPA2 to WPA using AES encryption lead to this issue. I suggest the wireless NICs in your devices don't support WPA-AES. AES in not the WPA1 encryption standard but TKIP is. Set it to WPA personal with AES AND TKIP
Edited by HiroPro - 8/18/11 at 12:07pm
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post #18 of 22
Thread Starter 
I am using at&t and that's what they use. I don't have this problem using dd-wrt firmware. Recently, I switched back to linksys stock firmware. This time I set my ssid to a different name instead of keeping the default linksys because I noticed my neighbor is using the same name. Suprisingly, the ip conflict issue is gone. Now that I think of it, I use the default name dd-wrt while using dd-wrt firmware which doesn't conflict with any ssid in my neighborhood. At first I thought the dd-wrt firmware itself fixed the issue, but now I have the reason to believe that the ssid was the cause of the problem.
    
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post #19 of 22
Well, the IP conflict should not be an often problem. If IP conflict is more common, then you have 2 computers with same IPv4 settings.

Best would be not the set IP on your computer, but let DHCP do the job for you. Further more you can assign fixed LAN IP address to all your computers and devices from your router, by host name and IP paring.
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post #20 of 22
Thread Starter 
When I had the ip conflict, all my computers were already set to dhcp. Yes, when I assign fixed lan ip address to all my computers and devices from my router, it doesn't conflict. But now since I have changed my ssid, I don't have to assign static ip to my computers from the router anymore.
    
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