Win2K admin help: multiple dhcp servers

[lord_moose]

OK, here's the situation I'm looking at and would appreciate any help you guys have to offer.

Windows 2000 mixed network. I have 2 DHCP servers servering different subnets on different sides of a router. DHCP server (a) has a scope of 192.168.5.1 -> 192.168.6.254. DHCP server (b) has a scopt of 192.168.7.150 -> 192.168.7.220.

Everything works fine, users on subnet (a) can see resources on subnet (b) and vice-versa. The problem is (exclusively) when a user on scope (b) shuts down and moves over to the same side of the router as scope (a). Their computer drops it's lease and leaves the IP at 0.0.0.0 and mask at 0.0.0.0. The lease on server (b) is not released and the client will not pick up a lease from server (a) [who's subnet it is now on].

Usually the computer needs to be rebooted a random number of times and/or remove the NIC. Then it will pick up a lease from scope (a) and everything is happy.... until this happens again.

Any ideas would be totally appreciated.

Thanx all!!

[engjohn]

what os are the clients?
do you do a ipconfig /release before removing it from one subnet to the other?
If it is 2k/XP you can right click on the NIC and disable it, then do the same to enable it and all should be well.

[lord_moose]

Originally posted by engjohn
what os are the clients?
do you do a ipconfig /release before removing it from one subnet to the other?
If it is 2k/XP you can right click on the NIC and disable it, then do the same to enable it and all should be well.

Haven't trie dth /releases before the shut down off that subnet. It's worth a try, but leaving *anything* upto the users is kind of like giving a toddler a lighter and stick of dynamite... eventually they'll blow themselves up.

Clients are all 2K. i'm not sure why, but some users can enable/disable the adapter but some aren't. Probably some inconsistant usersetting. Powerusers should be able to do that right?

I was thinking about creating an identical scope on each system .5.1 -> .7.220 on each, but on server (a) "exclude" what was originally on server (b), ande vice versa. Any thoughts on that?

Thanks again, I think I'll further into the dis/enable part, see if I can create an easy batchfile for that. Most of my users are really lame.