DHCP Subnet problem

[burlgoat]

Just recently moved across to 2K from a mixed NT4/Novell environment, also changed IP ranges throughout the company. Now using DHCP on DC's in all locations, however the 2 sites that ran NT4 exclusively before using DHCP, used the subnet 255.0.0.0. Our new address has a subnet 255.255.254.0.

When a new address is leased to the users on these 2 sites they are given the old subnet which of course is giving access problems, when we release and renew they are given the correct subnet, has anyone seen this before?

 

[MJewell]

Yep.. I had to do a release/Renew on all our machines when our subnet changed w/ an NT4 DHCP server for some reason... never did figure it out but renewing it worked fine...



-Mike

 

[karmic]

Do you by chance have anything else on the network performing dhcp? maybe a router/firewall? i've seen this problem occur that way.

Another thing to try is to check the lmhost file, not sure which operating system you are using. The network information may be hard coded there. Search the workstation for lmhost*.* depending on the operating system and edit it with notepad.

Good luck

~ K.I.S.S - Don't make it any more complex than it has to be ~

 

[burlgoat]

Thanks for your reply guys...

Karmic - Nothing else is set to give our DHCP addresses.

It is occuring mostly with Win 95/98 clients. I know we were supposed to remove all hosts files when we went round each PC, I am checking this step was completed (discovered one already which wasn't removed).

Thanks again for your help, willr eport back if it solves the problem...