Score:1

Windows DHCP not showing the accurate leases

ke flag

In Windows System Event log, there are DHCP server warnings that IP address range of a scope (10.40.0.0) that available is low.

Windows Event Log

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But in the DHCP program, the Address Leases is only showing 4 or 5 leases. Based on the settings it should allow 235 leases in total.

DHCP Address Leases DHCP scope properties

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There is only 4 for reservation. enter image description here

Is it the Windows System Event log warning is inaccurate? Or is it the DHCP program's Address Leases inaccurate? How do I resolve this to see accurate information?

This is in a Windows Server 2012 R2.

de flag
Please check network mask for that DHCP scope.
Boon Chye Phang avatar
ke flag
Hi @ZoranJankov are you referring to check the Subnet mask? I added a screenshot of the Subnet mask, what should I check in there?
de flag
Hi @Boon Chye Phang! Yes I was referring to the subnet mask. I thought you accidentally put wrong subnet mask, but it is fine. What about your address reservations? Check if you have any. They will count as leased addresses.
Boon Chye Phang avatar
ke flag
Hi @ZoranJankov, I have checked there is only 4 IPs for reservation. Added the screenshot of it too.
Score:2
cn flag

Is it the Windows System Event log warning is inaccurate?

No the event log is accurate. 27 days ago on October 21 that was the status of the DHCP scope available leases.

Boon Chye Phang avatar
ke flag
Hi Greg, the screenshots of the DHCP address lease was also taken around the time, that is why I cannot understand why the lease is only a few. Do you have any idea why?
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