DOCUMENT:Q187742 09-AUG-2001 [winnt] TITLE :Methods of Setting DHCP Options PRODUCT :Microsoft Windows NT PROD/VER:WinNT:3.51,4.0 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows NT Server versions 3.51, 4.0 ------------------------------------------------------------------------------- SUMMARY ======= The purpose of this article is to explain the differences between the four methods of setting Dynamic Host Configuration Protocol(DHCP) options. The four methods that can be used to set DHCP options are; Default, Global, Scope, and Client. MORE INFORMATION ================ The following is a brief description of the four methods that can be used to set DHCP options: Default ------- Setting a default DHCP option modifies the default value for one of the DHCP options. When a default value is set, the default value becomes the default that was set during administration rather than the DHCP default that was set during installation of DHCP. This method may be accessed through DHCP Manager, click "DHCP Options," then click "Defaults". Global ------ When you set a global DHCP option, the option takes affect for all DHCP scopes defined on the selected DHCP server. Global DHCP options appear in DHCP Manager with a globe icon proceeding them. This method may be accessed through DHCP Manager, from the DHCP Options menu, click Global. Scope ----- Setting a scope DHCP option will set the option only for the Selected scope on the Options Scope menu. DHCP options configured for a scope are displayed with a series of computer icons proceeding them in DHCP Manager. This method may be accessed through DHCP Manager, from the DHCP Options menu, click Scope. Client ------ This method can be used to configure one or more of the DHCP options for a specific DHCP client. DHCP options can be set for a client only if the DHCP client has a reserved IP address(a Reservation). The only way to see if a DHCP option is set for a DHCP client is to view the properties of an active client lease through DHCP Manager. To do this, perform the following steps: 1. On the Scope menu, click Active Leases. 2. Select the individual client, click Properties, and then click Options. NOTE: If the Options button is not available, no reservation for the client exists. NOTE: If a DHCP option is set by more than one method, precedence is in the following order: 1. Client Overrides... 2. Scope Overrides... 3. Global Overrides... 4. Default. Additional query words: kbDSupport ====================================================================== Keywords : Technology : kbWinNTsearch kbWinNT351search kbWinNT400search kbWinNTSsearch kbWinNTS400search kbWinNTS400 kbWinNTS351 kbWinNTS351search Version : WinNT:3.51,4.0 Issue type : kbinfo ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2001.