Problem Using Same IP address for RAS and Network Card (132504)
The information in this article applies to:
- Microsoft Windows 2000 Server
- Microsoft Windows 2000 Advanced Server
- Microsoft Windows 2000 Professional
- Microsoft Windows NT Workstation 3.5
- Microsoft Windows NT Workstation 3.51
- Microsoft Windows NT Workstation 4.0
- Microsoft Windows NT Server 3.5
- Microsoft Windows NT Server 3.51
- Microsoft Windows NT Server 4.0
This article was previously published under Q132504 SUMMARY
When you configure a network adapter card driver (including the MS Loopback
driver) under Windows NT 3.51 to use the same IP address as the IP address
of your RAS connection, you are unable to send network traffic over the RAS
connection.
This is not true under Windows NT 3.5.
MORE INFORMATION
The configuration mentioned above does not work under Windows NT 3.51 by
design. A RAS PPP connection is a distinct interface from the network card
or the MS Loopback adapter driver. Therefore, a unique IP address is
required for both the LAN interface and the PPP connection. You are able to
use the same IP address under Windows NT 3.5 due to a problem with the
RASIPHLP.DLL file. This problem was corrected in Windows NT version 3.51.
If you are not running the TCP/IP protocol on your local LAN, you are not
required to bind TCP/IP to your network card. To disable the TCP/IP binding
to the network card, run Control Panel and choose Network.
If you are required to use the TCP/IP protocol to participate on your local
LAN, you must assign an IP address to your network card that is different
than the IP address you are using for your RAS PPP connection.
| Modification Type: | Major | Last Reviewed: | 5/7/2003 |
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| Keywords: | kbnetwork KB132504 |
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