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IP Address Conflict

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9 replies

by jdick

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I am using DHCP from an NT 4.0 server with mixed NT 4.0 and 98 workstations. My 98 workstation keep getting IP address conflicts on their DHCP assigned addresses. Please help, one of the 98 workstations is the CFO. Thanks,
John

9 replies

by idtent

You didn't give alot of info so I will keep it simple. On the 98 box go to start | run and then type winipcfg. Click on release all and then renew all (better yet reboot or log off). The server assigns the IP and the machine holds on to it for a while and tries to get the same one back if its available. If I understand what you need help with this should do the trick. Good luck!

by russ werner

You didn't mention anything about the set up of your DHCP, but try extending the lease time on your DHCP. This may help assure the same ip number is being given to the same 98 computer when it logs in.

by rcc

Make sure you do not have overlaping ranges and.or static IP's (I know, is obvious).
Check your IP lease time (try setting it to something like 3 days, the client will request renewal anyway after 1.5 days).
Make sure you have (re)applied latest service pack for NT, as I went through a lot of grief one stage getting the same errors...done some componenet changes and did not applied the service pack.
See http://support.microsoft.com/support/kb/articles/Q120/7/52.asp (no spaces in the URL!)
http://support.microsoft.com/support/kb/articles/Q190/5/34.ASP
I hope this helps.
Regards,
Radu

by Former member

Good answers, the lease time on the DHCP server should not be multiples of your working hours (8,16, etc.). We use 8hrs 7min, this works well with our shift changes. I know it has been mentioned but I'd double check those static addresses also.

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