Knowledge Base

DHCP Client XIDs Differ in DISCOVER and REQUEST Packets

Article ID: 183180

Article Last Modified on 10/31/2006

Microsoft Windows NT Server 3.51
Microsoft Windows NT Server 4.0 Standard Edition
Microsoft Windows NT Workstation 3.51
Microsoft Windows NT Workstation 4.0 Developer Edition

This article was previously published under Q183180

SYMPTOMS

When you capture a network trace using a network analyzer, such as Microsoft Network Monitor, you may see Dynamic Host Control Protocol (DHCP) traffic where the DHCP client does not use the same xid in its DISCOVER and REQUEST packets.

RESOLUTION

To resolve this problem, obtain the latest Windows NT 4.0 Service Pack.

STATUS

Microsoft has confirmed this to be a problem in Windows NT version 4.0. This problem has been corrected in the latest U.S. Service Pack for Windows NT version 4.0. For information on obtaining the Service Pack, query on the following word in the Microsoft Knowledge Base:

   SERVPACK

Microsoft has confirmed this to be a problem in Windows NT 3.51. We are researching this problem and will post additional information here in the Microsoft Knowledge Base as it becomes available.

MORE INFORMATION

The xid is the transaction identifier and is used by computers to synchronize communications and to identify which packet is the correct response to a request.

REFERENCES

For more information, please see RFC1541.

RFCs may be obtained through the Internet as follows:

Paper copies of all RFCs are available from the NIC, either individually or on a subscription basis (for more information, contact NIC@NIC.DDN.MIL). Online copies are available through FTP or Kermit from NIC.DDN.MIL as rfc/rfc####.txt or rfc/rfc####.PS (#### is the RFC number without leading zeros).

Keywords: kbbug kbfix KB183180