DCHP - clients changing VLANS - get old addy

Anyone have a work around for this? We have each floor
of our dormatories on separate VLANs. We have the proper
scopes setup on our DHCP server, and everyone gets the
proper addresses. We have a problem with Windows
clients, though, who change rooms and therefore end up in
a different VLAN. Those students continue to receive
DHCP their original ip addy from their old scope. We
have them do an ipconfig /release and /renew, and they
end up with their old address. We have to delete their
old lease in the original scope, and temporarily disable
the old scope, have them do the /renew, and then they
will get a valid addy. Any help would be greatly
appreciated!

By default, when a dhcp client first boots it will try to renew the IP
Address it had the last time it was up. If your environment is Windows
2000 or later, you can configure the clients to release their IP Adresses
when they do a proper shutdown and therefore they would just request an IP
Address the next time they boot. Your other option would be to consider
short term leases however that would generate additional network traffic
due to the quicker renewals.

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David Thompson [MSFT]
Microsoft Server Setup Team

Search our Knowledge Base at http://support.microsoft.com/directory
Visit the Windows 2000 Homepage at
http://www.microsoft.com/windows2000/default.asp
See the Windows NT Homepage at http://www.microsoft.com/ntserver/

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