This article was previously published under Q174765
Windows NT 4.0 Service Pack 2 (SP2) or later provides a feature that allowsthe Dynamic Host Configuration Protocol (DHCP) Server Service to respond toBOOTP requests as well as DHCP requests. There are two types of BOOTPclients:
BOOTP clients that can request an IP address and other relevant information, such as default gateway address, name server address, and so on.
BOOTP clients that can request the location of the boot file information from which the client is to boot. This is most common with diskless workstations.
This article discusses the procedures required to configure a MicrosoftWindows NT DHCP server to provide the requested information to either ofthe above BOOTP clients.
NOTE: The following steps assume that your computer running MicrosoftWindows NT Server already has the DHCP Server Service installed andcorrectly configured for DHCP clients.
BOOTP Clients Requesting IP Address Information Only
To configure your Microsoft Windows NT DHCP Server to assign IP addressinformation to BOOTP clients, you must add a reservation for each BOOTPclient. For information about how to add a reservation, view the "ManagingClient Reservations" Help topic in DHCP Manager (Dhcpadmn.exe).
The reservation builds an association between the media access controladdress and the IP address. The clients simply request an address andWindows NT Server provides the IP address based on the client's mediaaccess control address in the BOOTP request frame. Your scope options applyto both your DHCP and your BOOTP clients, so it is imperative to verifythat your scopes are configured correctly.
BOOTP Clients Requesting Boot File Information
To configure your Microsoft Windows NT DHCP server to provide boot fileinformation to BOOTP clients, you must edit the BOOTP table in DHCPManager. The BOOTP Table is located in the Server Properties dialog boxthat can be accessed from the Server menu. For information about how toedit the BOOTP Table, view the "BOOTP Table" Help topic in DHCP Manager(Dhcpadmn.exe).
NOTE: A reservation must be configured in the appropriate scope for eachBOOTP client as specified in the section BOOTP Clients Requesting IPAddress Information Only above.
The downloading of the image file by the client is performed using TrivialFile Transfer Protocol (TFTP). Microsoft Windows NT does not include a TFTPServer service. To use your Windows NT DHCP Server with BOOTP clients whomust boot from an image file (usually diskless workstations), a third-partyTFTP server is required.
For more information on BOOTP see the following articles in the MicrosoftKnowledge Base:
ARTICLE-ID: 142373 TITLE : TFTP Server Not Included With Windows NT
ARTICLE-ID: 164394 TITLE : BOOTP Service Does Not populate ARP cache
ARTICLE-ID: 167708 TITLE : BOOTP Client Name Disappear in DHCP Manager
For more information about BOOTP, see RFC 1532, RFC 2131, and RFC 2132.
RFCs may be obtained through the Internet as follows:
Paper copies of all RFCs are available from the NIC, either individually oron a subscription basis (for more information, contact NIC@NIC.DDN.MIL).Online copies are available through FTP or Kermit from NIC.DDN.MIL asrfc/rfc####.txt or rfc/rfc####.PS (#### is the RFC number without leadingzeros).