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DHCP-TOOL: remove a lease

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3 replies

by herbert.lohninger

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Hi All !
I am looking for a Command Line Tool to delete a inactive DHCP-Lease on a WinNT Server.

Important:
not a reservation, only a lease without a reservation. A reservation e.g. I can remove with the dhcpcmd tool from the Winnt RK.

It's very important for me.
It also can be a 3rd party tool.

Please inform me, if you know something.

Bye
Herby

3 replies

by chris hirst

Why not just install the client tools from the NT 4 server cd to a workstation and use DHCP manager. I fail to see why you need to remove an inactive lease, If it is inactive it will be available for reservation, exclusion etc.
If you are trying to force a NIC to get a new lease then add the problem IP as an exclusion before connecting the NIC to the network and it will be given the next available

by herbert.lohninger

Hi Chris!
Thanks for your answer. Here my problem in the detail:

We have over 3.600 clients (all NT Workstation) and these in over 170 subnets with their own NT-Servers (PDC - own domains). If a employee from us or another person hangs in one ofthe subnets - he/she will get's an IP adress from the local DHCP Server.
If this person go on the same day away from this subnet I have a lease that is active (e.g. 3 days).
If a new PC should be installed with this ip address (that the lease have), we cannot install this client with this address.
p.s. our clients were installed over a very complex unattended installation of Windows NT.
All our Clients are numbered with a fix IP address over a reservation in the DHCP-Server.

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