NetworkAddress Parameter Not Supported for a Modem

 Last reviewed: March 26, 1997
Article ID: Q142684
The information in this article applies to:
  • Microsoft Windows NT Workstation versions 3.51 and 4.0
  • Microsoft Windows NT Server versions 3.51 and 4.0

SYMPTOMS

Assigning a specific media access control address with the parameter 

   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\NdisWAN\Parameters\
   NetworkAddress
for the modem used for a RAS connection is not supported. Every time a RAS connection is made, the assigned media access control address is set randomly.

CAUSE

There are two reasons why assigning a specific media access control address is not supported. The first reason is that a modem uses Serial.sys, and serial is not a device that NetworkAddress is relative to. The second reason is that the NetworkAddress registry override parameter is an optional value that is enforced only for Token Ring. So, if Serial.sys supported the NetworkAddress parameter, assigning a specific media access control address could be done. However, this would get more complicated with multiple serial devices in a machine. So, although a modem is a WAN device, it does not use a network device driver, which is where the optional NetworkAddress registry override parameter would be managed.

Additional query words: prodnt
Keywords : kbenv ntras ntregistry NTSrvWkst
Version : 3.51 4.0
Platform : WinNT

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Last reviewed: March 26, 1997
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