Need help please! For about a week now many of our machines have been getting duplicate IP errors, which in turn have been filling DHCP leases with the 'BAD_ADDRESS' names. It seems 5-6 of the 'BAD_ADDRESS' names correspond to one machine (or one MAC, really). We have a wireless network as well, and if we switch the laptops in question to wireless they are able to pull an IP with correct scope info and everything is fine. As soon as you take them off of wireless, plug in the ethernet cable, and they machine tries to pull an IP it automatically gives a duplicate IP error, DHCP fills up with 'BAD_ADDRESS' conflicts, and no matter what we try to do we cannot get the wires connection to work with DHCP.
This seems to only be on 4-5 machines right now. 4 of them are laptops, which are either turned off at night or taken home and returned in the morning. One is a new desktop that I just installed XP on, put it on the domain, and wamm-o... IP conflict. No matter how many times I go in to DHCP, remove the IP address for the desktop, reserve the address for the MAC I see it conflicting with in event viewer, whatever... as soon as I plug the cable back in the IP address it pulls conflicts with another IP. It's like it isn't pulling new IPs, just trying to take IPs already being used.
Now, let me try and explain the network setup in DHCP. One subnet (172.18.32.0) split between two DC's, and put in two Superscopes. One has about 30 IPs to hand out (172.18.32.101 - .130) and the other has about 123 IPs to hand out (172.18.32.131 - .254). Both DC's were playing fine with DHCP between each other until about a week ago. I can't think of anything that has changed within the config of DHCP or anywhere else. I don't understand why it's happening or how to stop it.
Can anyone help??
This seems to only be on 4-5 machines right now. 4 of them are laptops, which are either turned off at night or taken home and returned in the morning. One is a new desktop that I just installed XP on, put it on the domain, and wamm-o... IP conflict. No matter how many times I go in to DHCP, remove the IP address for the desktop, reserve the address for the MAC I see it conflicting with in event viewer, whatever... as soon as I plug the cable back in the IP address it pulls conflicts with another IP. It's like it isn't pulling new IPs, just trying to take IPs already being used.
Now, let me try and explain the network setup in DHCP. One subnet (172.18.32.0) split between two DC's, and put in two Superscopes. One has about 30 IPs to hand out (172.18.32.101 - .130) and the other has about 123 IPs to hand out (172.18.32.131 - .254). Both DC's were playing fine with DHCP between each other until about a week ago. I can't think of anything that has changed within the config of DHCP or anywhere else. I don't understand why it's happening or how to stop it.
Can anyone help??