Event ID 1000 — DHCP Client Option Configuration
Applies To: Windows Server 2008 R2
Dynamic Host Configuration Protocol (DHCP) uses options to pass additional Internet Protocol (IP) settings to DHCP clients on a network. Examples of DHCP options include:
- The default gateway IP address
- The Domain Name System (DNS) server IP address
- The DNS domain name
You can configure options for an entire server, a scope, or for a single reserved client. If the server does not recognize the options sent by the client, it ignores the options.
Product: | Windows Operating System |
ID: | 1000 |
Source: | Microsoft-Windows-DHCP-Server |
Version: | 6.1 |
Symbolic Name: | EVENT_SERVER_UNKNOWN_OPTION |
Message: | The DHCP service received the unknown option %1, with a length of %2. The raw option data is given below. |
Configure the DHCP server to recognize all options that the client sends.
To perform these procedures, you must be a member of the Administrators group, or you must have been delegated the appropriate authority.
To identify the DHCP options requested by the client:
Caution: Incorrectly editing the registry might severely damage your computer. Before making changes to the registry, back up any valued data.
- At the DHCP client, click Start, in Start Search type cmd, and then press ENTER.
- Type regedit, and then press ENTER.
- Navigate the registry tree to the following entry: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Dhcp\Parameters\options
- Under options, compare the option number requested by the client with the options configured on the DHCP server.
- After comparing the option numbers, you can manage your DHCP options on the server or client so that they match.
Verify that your server options, scope-level options, and reserved client options match the client options.
To perform these procedures, you must be a member of the Administrators group, or you must have been delegated the appropriate authority.
To view server options:
- At the DHCP server, click Start, point to Administrative Tools, and then click DHCP.
- Right-click Server Options, and then click Configure Options.
- In the Server Options dialog box, verify that the options selected match the client options.
- In the Data Entry section of the Server Options dialog box, verify that the options parameters match the client, and then click OK.
To perform these procedures, you must be a member of the Administrators group, or you must have been delegated the appropriate authority.
To view scope-level options:
- At the DHCP server, click Start, point to Administrative Tools, and then click DHCP.
- Right-click Scope Options, and then click Configure Options.
- In the Scope Options dialog box, verify that the options selected match the client options.
- In the Data Entry section of the Scope Options dialog box, verify that the option parameters match the client, and then click OK.
To perform these procedures, you must be a member of the Administrators group, or you must have been delegated the appropriate authority.
To view reserved client options:
- At the DHCP server, click Start, point to Administrative Tools, and then click DHCP.
- Expand the scope that holds the reservation for which you want to verify options, and then expand Reservations.
- Right-click the reservation you want to verify, and then click Configure Options.
- In the Reservation Options dialog box, verify that the options selected match the client options.
- In the Data Entry section of the Reservation Options dialog box, verify that the option parameters match the client, and then click OK.