DOCUMENT:Q177824  09-AUG-2001  [winnt]
TITLE   :DHCP Client Is Assigned Subnet Broadcast Address
PRODUCT :Microsoft Windows NT
PROD/VER:WinNT: 4.0
OPER/SYS:
KEYWORDS:kbinterop kbnetwork

======================================================================
-------------------------------------------------------------------------------
The information in this article applies to:

 - Microsoft Windows NT Workstation version 4.0 
 - Microsoft Windows NT Server version 4.0 
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SYMPTOMS
========

One or more of your Dynamic Host Control Protocol (DHCP) clients may experience
problems communicating on the network using TCP/IP. These problems may include
one or more of the following:

 - The inability to successfully ping other TCP/IP hosts.

   -or-

 - The inability to resolve NetBIOS or Host names of other TCP/IP hosts.

CAUSE
=====

Your DHCP server may have assigned the client a subnet broadcast address instead
of a valid IP address.

RESOLUTION
==========

To resolve this issue, use one of the following:

 - When creating scopes, do not include the subnet broadcast address. For
   example:

   Creating a scope of 192.168.1.1-255 with Mask 255.255.255.0 may result in a
   DHCP client being offered the 192.168.1.255 address, which is the subnet
   broadcast address. Instead, you should create the scope 192.168.1.1-254 with
   Mask 255.255.255.0.

   -or-

 - To modify an existing scope, create an exclusion for the subnet broadcast
   address.


For additional information, please see the following article in the Microsoft
Knowledge Base:

ARTICLE-ID: Q164015
TITLE : Understanding TCP/IP Addressing and Subnetting Basics

STATUS
======

Microsoft has confirmed this to be a problem in Windows NT version 4.0. We are
researching this problem and will post new information here in the Microsoft
Knowledge Base as it becomes available.
======================================================================
Keywords          : kbinterop kbnetwork 
Technology        : kbWinNTsearch kbWinNTWsearch kbWinNTW400 kbWinNTW400search kbWinNT400search kbWinNTSsearch kbWinNTS400search kbWinNTS400
Version           : WinNT: 4.0
Issue type        : kbbug

=============================================================================

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