Consultor Eletrônico

SUMMARY:

Media Sense, a function within all Windows 2000 series operating systems, can potentially shutdown the AdminServers on those machines. You might wish to disable the Media Sense capability of the operating system if your machine is a development machine.

EXPLANATION:

In a true production environment if the network is sensed as down, chances are that the immediate shutdown of the AdminServer won't complicate matters since there isn't a network available for it to interact with. However, in a development environment where the machine might never be connected to the network, the inability to run the AdminServer is a significant drawback.

SOLUTION:

Microsoft published document Q239924 which discusses a modification to the Registry that will disable the Network Media Sense function and allow the AdminServer to continue running with or without the network connected.

NOTE: Please remember to backup your registry and potentially your machine if you plan on editing the registry.

This modification only applies to TCP/IP since NetBEUI and IPX do not monitor Media Sense.

1) Use either regedit.exe or regedt32.exe to modify the following
registry key:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters

2) Add the following key within the Parameters section:

DWORD Name DisableDHCPMediaSense
Value 1

3) Reboot the machine.

At this point, if you disconnect your network cable and you check the network connectivity with ipconfig you will be informed that cable is disconnected. Windows 2000 will no longer be wiping the routing table or performing some of the other tasks which were severing the AdminServer.

NOTE: If you have multiple NICs and one NIC fails, then all routing through the disabled NIC will now route through the remaining active NIC.

There are some other side effects which may be important to some users (for instance, mobile users).


References to Written Documentation:

Microsoft Knowledge Base Q239924