I have ip conflict with another system on the network? Please help?

Question

What to do to prevent this, and can be this harmful? Can someone waste my free GB's for downloading or surfing on the internet?

Answer 1

Yes and it will also steal all your beer from your fridge.

OK sorry, couldn't resist.

What "network" are you talking about? If someone set up your network or manages it, tell them right away!!

Assuming you're using Windows, click on Start, Run, and type in IPCONFIG. Either write down all the info you see there, or right click the Command window, click on Select All, then right click anywhere in that window again (should be all white) and paste that info into notepad or word or something and save it with a name you'll remember, like "THAT'S MY IP ADDRESS". This will come in handy later.

Type this in the command window and enter it:

IPCONFIG /ALL

Look for a part that says DHCP Server. If you DO see that listed, then some is using your network with manual addresses. Someone is using your network and Internet, possibly without your permission. If so type this in.

IPCONFIG /RELEASE

then this

IPCONFIG /RENEW

Don't close the command window yet. Now try going on the web. Visit different websites, including this one. If you can get on line, look up that stuff you wrote down or saved in the document earlier. See the number next to IP Address? Now in the command window type IPCONFIG again and hit Enter. If you see a different IP Address, type this and enter it in the command window:

PING ___.___.___.___ (type the previous IP address here).

If you get 4 responses it means they're still connected to your network.

Before you panic, first turn off othercomputers in your network one at a time, and ping the address like above after you turn each machine off. If you get "Request timed out." four times, it's the machine you turned off last. If your computer is the only one on and it still responds to the PING, find out if anyone else in your house is using the Internet. If not, you need to configure the WiFi settings on your WiFi router for WPA or WAP (WPA is better).

Please refer to the documentation for that router, or contact their tech support.

Answer 2

No two machines can have the same IP address. If a machine detects that another machine has the same IP address it is supposed to shut down the network interface to prevent conflict.

From my experience the two primary causes are poor management of static IP addresses or using a public IP address scheme assigned to someone else behind a NAT firewall.

Some inexperienced admins mistakenly think that any IP address beginning with 192. or 172. are private IP addresses. This is not the case. 192.168.x.x is private as is 172.16.x.x through 172.31.x.x. I had a call for IP conflicts on a network that used 192.90.0.0/16 as the schema. They had to re-IP the entire network to correct the problem. Nightmare for them, nice fat invoice for me!

Answer 3

somebody on the network assigned same IP address, just change it, it affects you only if router policies are set up to manage bandwith on ip.... and how u can prevent? activate dhcp on router, then let your computer get address from pool....