IP system changed, Ping no longer works

Lellis2k · 01-10-2007, 09:12 AM

Hi Guys,

We've just changed our network from 20.0.0.x to 192.168.0.x

Since then 3 of our 30 machines are not showing the change (when you ping the computer's name it still tries to ping it's old 20.0.0 address) They are all up and running on the network with no problems apart from this.

So far we have tried rebooting them, taking them off the domain and re-adding them, deleting them from active directory and re-adding them but nothing has worked.

What exactly tells your computer which I.P. goes with which name and how can I update it for these 3 computers?

Thanks, Leigh

crazijoe · 01-10-2007, 09:25 AM

Quote:

Originally Posted by Lellis2k

What exactly tells your computer which I.P. goes with which name and how can I update it for these 3 computers?

DNS

On your server, open DNS and delete the entries for the questionable workstations.
Reboot the workstations.

Lellis2k · 01-11-2007, 08:18 AM

Thought so but I cant find any dns entries relating to the computers.

You say open dns on the server, but how do I do that. I'm running windows server 2003.

crazijoe · 01-11-2007, 08:26 AM

Start, Administrative tools, DNS. Expand "server name", expand Forward Lookup Zones, click "FQD name". All clients DNS names will be here. Just right click and delete. Do the same for the Reverse Lookup Zone.

Lellis2k · 01-19-2007, 01:06 AM

That worked!

Nice one, thanks dude

01-10-2007, 09:12 AM	#1 (permalink)
Lellis2k Registered User Join Date: Mar 2006 Posts: 100 OS: xp + vista	IP system changed, Ping no longer works Hi Guys, We've just changed our network from 20.0.0.x to 192.168.0.x Since then 3 of our 30 machines are not showing the change (when you ping the computer's name it still tries to ping it's old 20.0.0 address) They are all up and running on the network with no problems apart from this. So far we have tried rebooting them, taking them off the domain and re-adding them, deleting them from active directory and re-adding them but nothing has worked. What exactly tells your computer which I.P. goes with which name and how can I update it for these 3 computers? Thanks, Leigh

01-11-2007, 08:26 AM	#4 (permalink)
crazijoe Registered User Join Date: Oct 2004 Location: Omaha, The Center of the Universe Posts: 7,630 OS: WinXP, Win2K3 My System	Start, Administrative tools, DNS. Expand "server name", expand Forward Lookup Zones, click "FQD name". All clients DNS names will be here. Just right click and delete. Do the same for the Reverse Lookup Zone. __________________ Microsoft MCSA + Messaging, MVP, A+, Network+ http://i16.photobucket.com/albums/b3...other/Help.jpg Do you want a real Republican? HDD diagnostic tools / HDD data recovery software

01-11-2007, 08:18 AM	#3 (permalink)
Lellis2k Registered User Join Date: Mar 2006 Posts: 100 OS: xp + vista	Thought so but I cant find any dns entries relating to the computers. You say open dns on the server, but how do I do that. I'm running windows server 2003.

01-19-2007, 01:06 AM	#5 (permalink)
Lellis2k Registered User Join Date: Mar 2006 Posts: 100 OS: xp + vista	That worked! Nice one, thanks dude