DOCUMENT:Q140989 08-AUG-2001 [winnt] TITLE :PRB: DHCP Skips Addresses If Exclusion Range Included in Scope PRODUCT :Microsoft Windows NT PROD/VER:3.5 3.51 4.0 OPER/SYS: KEYWORDS:kbnetwork ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows NT Server versions 3.5, 3.51, 4.0 ------------------------------------------------------------------------------- SYMPTOMS ======== When you use an exclusion range with DHCP, addresses offered to clients may not begin at the first address in the scope. STATUS ====== This behavior is by design. MORE INFORMATION ================ Leases offered to clients from a DHCP scope will be offered consecutively, starting with the first address in the IP address pool. But if an exclusion range is added to the scope, the first lease offered may not be the first address in the IP address pool. For example, if a scope is created using a starting address of 165.224.113.11 and an ending address of 165.224.113.249, the first lease address offered to clients will be 165.224.113.11. Alternatively, if an exclusion range of 165.224.113.100 to 165.224.113.120 is added to the scope, the first lease address offered will be 165.224.113.75. Leases will be offered consecutively through 165.224.113.249, skipping the excluded range. After 165.224.113.249, the next leases offered will be 165.224.113.11 through 165.224.113.74 consecutively. This may also occur when multiple ranges of addresses are included in the DHCP scope. Additional query words: prodnt tcpip ====================================================================== Keywords : kbnetwork Technology : kbWinNTsearch kbWinNT351search kbWinNT350search kbWinNT400search kbWinNTSsearch kbWinNTS400search kbWinNTS400 kbWinNTS351 kbWinNTS350 kbWinNTS351search kbWinNTS350search Version : 3.5 3.51 4.0 Issue type : kbprb ============================================================================= 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.