DHCP Authorization and Conflicts
Applies To: Windows Server 2008 R2
When configured correctly and authorized for use on a network, Dynamic Host Configuration Protocol (DHCP) servers provide a useful administrative service. However, a misconfigured or unauthorized DHCP server can cause problems. For example, if an unauthorized DHCP server starts, it might begin either leasing incorrect IP addresses to clients or negatively acknowledging DHCP clients that attempt to renew current IP address leases.
To resolve these issues, DHCP servers are verified as authorized in Active Directory Domain Services before they can service clients. This prevents most of the accidental damage caused by either misconfigured DHCP servers or correctly configured DHCP servers running on the wrong network.
Events
| Event ID | Source | Message |
|---|---|---|
Microsoft-Windows-DHCP-Server |
The DHCP/BINL service on the local computer has determined that it is authorized to start. It is servicing clients now. | |
Microsoft-Windows-DHCP-Server |
The DHCP/BINL service on the local computer, belonging to the Windows Administrative domain %2, has determined that it is authorized to start. It is servicing clients now. | |
Microsoft-Windows-DHCP-Server |
The DHCP/BINL service on the local computer has determined that it is not authorized to start. It has stopped servicing clients. The following are some possible reasons for this: %tThis computer belongs to a workgroup and has encountered another DHCP server (belonging to a Windows Administrative Domain) servicing the same network. %tAn unexpected network error occurred. |
|
Microsoft-Windows-DHCP-Server |
The DHCP/BINL service on the local computer has determined that it is authorized to start. It is servicing clients now. The DHCP/BINL service has determined that the computer was recently upgraded. If the computer is intended to belong to a directory service enterprise, the DHCP service must be authorized in the directory service for it to start servicing clients. (See help on DHCP Service Management Tool for authorizing the server). |
|
Microsoft-Windows-DHCP-Server |
The DHCP/BINL service has determined that it is not authorized to service clients on this network for the Windows domain: %2. All DHCP services that belong to a directory service enterprise must be authorized in the directory service to service clients. (See help on the DHCP Service Management Tool for authorizing a DHCP server in the directory service). | |
Microsoft-Windows-DHCP-Server |
The DHCP/BINL service on this workgroup server has encountered another server with IP Address, %1, belonging to the domain %2. | |
Microsoft-Windows-DHCP-Server |
The DHCP/BINL service on this computer running Windows Server 2003 for Small Business Server has encountered another server on this network with IP Address, %1, belonging to the domain: %2. | |
Microsoft-Windows-DHCP-Server |
The DHCP/BINL service is not authorized in the directory service domain "%2" (Server IP Address %1) | |
Microsoft-Windows-DHCP-Server |
The DHCP/BINL service is authorized in the directory service domain "%2" (Server IP Address %1) | |
Microsoft-Windows-DHCP-Server |
The DHCP/BINL service has not determined if it is authorized in directory domain "%2" (Server IP Address %1) | |
Microsoft-Windows-DHCP-Server |
Authorization succeeded%0 | |
Microsoft-Windows-DHCP-Server |
Authorization failed%0 | |
Microsoft-Windows-DHCP-Server |
Authorization failure, stopped servicing%0 |