Hello ,

We want to Monitor active Leases in DHCP with CheckMK.
It works so far .
We create an own Scope . In this Scope there are two IP Adresses .
When an Server becomes one of this both IP Adresses the we become an active Lease .
This Lease brings the Monitoring Software to an Alarm .
We setup an Leasetime for this Lease under the Scope Settings to 5 minutes.

The Target should be that the Monitoring Software brings an Alarm when one of this two Leases or both are aktive.
But we want to become back an green ( good ) Monitoring Message , when the Server who becomes the IP Address is shut down and the Lease Time from 5 Minutes are gone .
Means then there are no active Leases at all .

But now our Problem .
We shut down the Server and after 5 Minutes aktive leases under DHCP Server was empty .
BUT
When i put in this command : “netsh dhcp server show mibinfo” then i become back this info :

C:>netsh dhcp server show mibinfo

MIBCounts:
Discovers = 5167.
Offers = 5167.
Delayed Offers = 0.
Requests = 246250.
Acks = 246422.
Naks = 7.
Declines = 0.
Releases = 63.
ServerStartTime = Freitag, 5. Juli 2024 23:00:21
Scopes = 24.
Scopes with Delay configured= 0.
Subnet = x.x.x.x.
No. of Addresses in use = 1.
No. of free Addresses = 1.
No. of pending offers = 0.

Means the System think that there is already an active IP but the GUI dont show it .

How is it possible to bring back the No. of Addresses in use back to zero ?

Thanks
Michael

​Hello ,We want to Monitor active Leases in DHCP with CheckMK.It works so far .We create an own Scope . In this Scope there are two IP Adresses .When an Server becomes one of this both IP Adresses the we become an active Lease .This Lease brings the Monitoring Software to an Alarm .We setup an Leasetime for this Lease under the Scope Settings to 5 minutes.The Target should be that the Monitoring Software brings an Alarm when one of this two Leases or both are aktive.But we want to become back an green ( good ) Monitoring Message , when the Server who becomes the IP Address is shut down and the Lease Time from 5 Minutes are gone .Means then there are no active Leases at all .But now our Problem .We shut down the Server and after 5 Minutes aktive leases under DHCP Server was empty .BUTWhen i put in this command : “netsh dhcp server show mibinfo” then i become back this info :C:>netsh dhcp server show mibinfoMIBCounts:Discovers = 5167.Offers = 5167.Delayed Offers = 0.Requests = 246250.Acks = 246422.Naks = 7.Declines = 0.Releases = 63.ServerStartTime = Freitag, 5. Juli 2024 23:00:21Scopes = 24.Scopes with Delay configured= 0.Subnet = x.x.x.x.No. of Addresses in use = 1.No. of free Addresses = 1.No. of pending offers = 0.Means the System think that there is already an active IP but the GUI dont show it .How is it possible to bring back the No. of Addresses in use back to zero ?ThanksMichael  Read More

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