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Solved Win2K DHCP not handing out available addresses..

March 28, 2013 at 14:39:37
Specs: Windows 2000
Hey all -- This has got me stumped. First off, I'm walking into this very poorly structured/maintained network, so I have no idea where it's come from.

So the Win2k DHCP is reporting 100% of its addresses are taken, but looking thru the leases, there are gaps of addresses available - about 50 available IPs. Pinging most of the IPs gives a "destination host unreachable" (some ping back, so I'm assuming that those are statically assigned? but they're not reserved, so why wouldn't DHCP assign them and just cause a conflict??)..

Thoughts? Suggestions? I'm confused.

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March 28, 2013 at 20:46:20
Some people make the mistake of assigning static IPs, in the DHCP range, instead of reserving them. However, if they are statically assigned, you should have a ping response.

How do you know when a politician is lying? His mouth is moving.

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March 29, 2013 at 01:57:20
You've checked that these addresses are included in the zone? Other than that, and reservations, there's no reason that they shouldn't be available - other than a corrupt leases file. A little basic troubleshooting advice here:

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March 29, 2013 at 06:31:23
✔ Best Answer
This problem may have worked itself out, oddly enough..

A maintenance guy accidentally shut off a circuit breaker to the server room, which, eventually (when the UPS died), shut down the Win2k server. When it came back up, there were 84 leases with the IP address listed as the device name.. along with the correct lease (shown with the computername.domain.loc).. the IP-address-named leases were not shown before the reboot..

I deleted the IP-address-named leases and am cautiously optimistic as it's an hour into the business day and we still have 82 leases available.

Murphy's law - it only hurts until you go to the doctor.. or until the maintenance guy shuts off the power to the server room.

Thanks for the replies.

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