It could be related to your XP USB Driver, or try the
following:
http://support.microsoft.com/default.aspx?scid=kb;EN-
US;239924
How to Disable Media Sense for TCP/IP in Windows
View products that this article applies to.
This article was previously published under Q239924
IMPORTANT: This article contains information about
modifying the registry. Before you modify the registry,
make sure to back it up and make sure that you understand
how to restore the registry if a problem occurs. For
information about how to back up, restore, and edit the
registry, click the following article number to view the
article in the Microsoft Knowledge Base:
256986 Description of the Microsoft Windows Registry
SUMMARY
Windows contains the "Media Sensing" feature. You may use
this feature on a Windows-based computer using
Transmission Control Protocol/Internet Protocol (TCP/IP)
to detect whether or not your network media is in a "link
state". A "link state" is defined as the physical media
connecting or inserting itself on the network. For
example, assuming a 10bt or 100bt physical media,
Ethernet network adapters and hubs typically have
a "link" light to indicate the current connection status.
This is the same condition in which Windows can detect a
link. Whenever Windows detects a "down" state on the
media, it removes the bound protocols from that adapter
until it is detected as "up" again. There may be
situations where you may not want your network adapter to
detect this state, and you can configure this by editing
the registry.
NOTE: 10b2 or coaxial (RG-58) Ethernet cable is not a
connection-based media. Because of this, Windows does not
attempt to detect a "connect" state if this type of
cabling is used.
MORE INFORMATION
WARNING: If you use Registry Editor incorrectly, you may
cause serious problems that may require you to reinstall
your operating system. Microsoft cannot guarantee that
you can solve problems that result from using Registry
Editor incorrectly. Use Registry Editor at your own risk.
To prevent your network adapter from detecting the link
state:
NOTE: NetBEUI and IPX do not recognize Media Sense.
Use Registry Editor (Regedt32.exe) to view the following
key in the registry:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip
\Parameters
Add the following registry value:
Value Name: DisableDHCPMediaSense
Data Type: REG_DWORD -Boolean
Value Data Range: 0, 1 (False, True) Default: 0 (False)
Description: This parameter controls DHCP Media Sense
behavior. If you set this value data to 1, DHCP, and even
non-DHCP, clients ignore Media Sense events from the
interface. By default, Media Sense events trigger the
DHCP client to take an action, such as attempting to
obtain a lease (when a connect event occurs), or
invalidating the interface and routes (when a disconnect
event occurs).
Restart your computer.
NOTE: There are some side effects of disabling the "Media
Sensing" feature. For example, if you have a machine with
two network adapters, and you have the "Media Sensing"
feature enabled, if one network adapter does not work, it
is unbound, and associated routes are removed so that all
traffic goes through the other network adapter (assuming
a default gateway is there). Also, if you are a roaming
(portable) user, the "Media Sensing" feature is what
provides the ability to connect to any network and have
everything work, without restarting, release and
renewing, and so on. After disabling Media Sense and
restarting, Windows still shows the "Network
Disconnected" icon on the TaskBar and the 'ipconfig'
command still shows a "Media State .....: Cable
Disconnected" message when the cable is disconnected.
However, the Network Interface is bound to TCP/IP and you
can verify this by looking at the route table --you can
use the "route print" command-- which shows the interface
IP address (you are also able to ping the IP address
assigned to the NIC).
The information in this article applies to:
Microsoft Windows Server 2003, Standard Edition
Microsoft Windows 2000 Server
Microsoft Windows 2000 Advanced Server
Microsoft Windows 2000 Professional
Microsoft Windows 2000 Datacenter Server
