I am currently running WINNT 4.0 w/SP3 on several NT servers, on a single subnet, in a single domain. We use mostly Win95 clients, with the exception of a few WINNT 4.0 SP3 clients. We are handing out fake-net IP addresses via DHCP. We are trying to use two scopes:
PDC 172.16.21.1 - 172.16.40.255
BDC 172.16.41.1 - 172.16.60.255
For a month everything was working fine. Both scopes were working without a problem.
Then, without warning, our BDC decided to stop handing out IP addresses. And since it is the lesser burdened of the two DHCP servers, it would typically beat the PDC to answering requests, thus, nobody was getting their IPs.
We decided to stop the MS DHCP service on the BDC. The PDC went back to handing out IPs without error. Meanwhile we tried to figure out what had changed to cause the BDC to stop handing out IPs. No luck. We tried deleting and rebuilding the scope - that didn't work. I tried following the Resource Guide's suggestion of deleting J50.LOG, J50#####.log, and Dhcp.mdb from the \systemroot\System32\Dhcp directory - didn't work. Tried uninstalling and reinstalling the DHCP server service (than reapplying SP3)- no luck.
When the service is active on the BDC user's do not receive an IP address. WINIPCFG yield's an IP address of 0.0.0.0. When you try to release and renew you receive the following error message:
Error - Access Denied: Renewing Adapter""
When I check the scope on the PDC it appears that it has handed out a few IP addresses but there is no user name to the right of the address to indicate who it has been assigned to.
Any help would be greatly appreciated.