IP Conflict

[HelpPls]

One of my XP Pro users is getting an IP CONFLICT balloon pop-up. I checked
our DNS server and DHCP server and his machine seems to be the only one
assigned with the IP. I am in the process of checking to see if any one
statically assigned themselves the IP in question but, is there a way to
figure out the NetBIOS or DNS name of the offending machine?

Sean

 

[Gerry]

If you're getting the IP conflict message, then another
device on your network has that ip address assigned as
well. Turn off the box with the IP conflict, go to
another box and see if you can still ping that IP
address. If you can, its going to be a process of going
around to all your machines and find the one that has the
ip address. Once you find it, open a command window and
do a "ipconfig /release" and then a "ipconfig /renew".
Then just type "ipconfig" and see what the new address is
assigned.

 

[CZ]

One of my XP Pro users is getting an IP CONFLICT balloon pop-up. I
checked
our DNS server and DHCP server and his machine seems to be the only one
assigned with the IP. I am in the process of checking to see if any one
statically assigned themselves the IP in question but, is there a way to
figure out the NetBIOS or DNS name of the offending machine?

Sean:

1) Review the registrations on the WINS server

or 2) Shutdown the known ws, run ping -a x.x.x.x
If the -a argument does not cause the name to display, quickly run arp -a to
display the MAC address, then check the DHCP server for the MAC address.

or 3) Use a packet sniffer

or 4) Exclude that IP address from the DHCP server's scope.

 

[TDM]

If you're getting the IP conflict message, then another
device on your network has that ip address assigned as
well. Turn off the box with the IP conflict, go to
another box and see if you can still ping that IP
address.

Another way to possibly get the name, should the IP be taken
by a PC and not some other form of network hardware like a
printer, you can open a command shell and try this :

nbtstat -A xxx.xxx.xxx.xxx

Where xxx.xxx.xxx.xxx is the IP address in question.

This should disply the Remote Machine Name table, which should
contain its own name.

TDM

 

[Steve Nielsen]

One of my XP Pro users is getting an IP CONFLICT balloon pop-up. I checked
our DNS server and DHCP server and his machine seems to be the only one
assigned with the IP. I am in the process of checking to see if any one
statically assigned themselves the IP in question but, is there a way to
figure out the NetBIOS or DNS name of the offending machine?

Sean

Get this IP scanner (free):

http://www.angryziber.com/ipscan/

and scan the subnet. It will tell you enough info about the machines and
logged-in users to help you identify the culprit.

Steve