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DHCP not Automatically renewed

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9 replies

by charl 2 views

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I have 2 sites, both connected to each other via Intel VPN boxes. I have a user that moves between the sites. He has a Windows 2000 Pro laptop. When he sets up at home-office, he gets an IP address from DHCP server 1 (NT4), but when he moves to the new office, he has to do an ipconfig /release, ipconfig /renew each time before he gets the new IP address from DHCP server 2 (NT4) (both sites are on different IP subnets, with a Router inbetween). I don't want to make the lease expire too soon, is there another way to froce the laptop to get a new IP address each time it reboots to make this transparent to the user?

Thanks, and keep up the good work on TechRepublic.

Charl@systechusa.com

9 replies

by baadil

One of the easiest way that I can think of is to create a batch file which releases and renews IP and put it into startup folder.
HTH

by charl

I have done this already, I just wished there was another, more seamless way.

Thanks

by flan

what's wrong with setting the lease to one day? dhcp requests / renews don't take that long and are done by the time the computer is booted up.

by curlergirl

I suggest having him use static IPs instead of DHCP. In this type of situation, it's really hard to force the laptop to get a new IP, espec. since you are on two completely separate subnets. You can't control his release/renew cycle separately from everyone else's, either. However, with static IPs, you can simply multi-home his NIC and add an exclusion for his assigned IP address on each DHCP server. Then he never has to worry about renewing or releasing at either location. Hope this helps!

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