DHCP server. Unique ID. How use only MAC address

_{Wednesday, October 25, 2017 11:17 AM}

Hello,

I have Windows Server 2012 with install DHCP role.
In "address leases" I have records with field "Unique ID" that contains not MAC address (contain more longer code)

How I can constrain DHCP server in to issue lease only by MAC address and do not accept issue by no MAC address "Unique ID" ?

_{Thursday, October 26, 2017 5:26 AM}

Hi,

Distribute DHCP Leases Based on MAC Address

More information about  MAC address filtering  ,   please refer to the following article:

https://technet.microsoft.com/en-us/library/dd759190(v=ws.11).aspx

Best Regards,

Frank

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_{Thursday, October 26, 2017 7:01 AM}

Thank you frank_song for answer. 

Maybe if I will filter by MAC, some appliance do not receive IP address ... 

I want to get rid of long "Unique IDs"

I want force appliance to give the "right" MAC-address

_{Thursday, October 26, 2017 7:51 AM}

Hi,

According to your description, my understanding is that the DHCP scope almost run out due to unique ID similar to long code（13b.....）. And this problem occurs after  reconciling.

The DHCP Server service stores detailed and summary IP address information in the DHCP database. When reconciling scopes, the detailed and summary entries are compared to find inconsistencies. After you select and reconcile scope inconsistencies, the DHCP Server service either restores those IP addresses to the original owner or creates a temporary reservation for those addresses. These reservations are valid for the lease time assigned to the scope. When the lease time expires, the addresses are recovered for future use.

So, after reconciling there would be new lease appeared and may be not in use currently. You may shorten the lease duration and check to see if these lease will disappear when lease duration expired.

Besides, have you configured the DHCP to assign IP lease to remote clients (remote access server  will obtains multi IP leases from a DHCP server at one time)?

Best Regards,
Frank

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_{Tuesday, October 31, 2017 8:45 AM}

Hi,
Just checking in to see if the information provided was helpful. Please let us know if you would like further assistance.

Best Regards,

Frank

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_{Wednesday, November 8, 2017 9:15 AM}

Hi,

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Best Regards,
Frank

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