Microsoft KB Archive/131667

= Problems Clearing and Adding To Routing Tables Using ROUTE.EXE =

Article ID: 131667

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows NT Advanced Server 3.1
 * Microsoft Windows NT Server 3.5
 * Microsoft Windows NT Server 3.51
 * Microsoft Windows NT Workstation 3.1
 * Microsoft Windows NT Workstation 3.5
 * Microsoft Windows NT Workstation 3.51
 * Microsoft Windows NT Advanced Server 3.1
 * Microsoft TCP/IP for Windows for Workgroups 3.11

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This article was previously published under Q131667



SYMPTOMS
You may experience problems configuring static routing tables in Windows NT and TCP/IP-32 for Windows for Workgroups when using the following ROUTE.EXE commands:

  ROUTE -F      (clears routing tables for all gateway entries) ROUTE ADD    (adds a route to the routing tables)

ROUTE -F
On a multihomed computer, the default gateway IP addresses of 0.0.0.0 for all network interface cards (NICs) are lost when you use the ROUTE -F command.

If you add the default gateway using the ROUTE ADD command, the default gateway route for only the first NIC is applied. The default gateway routes of 0.0.0.0 for other NICs are lost.

ROUTE ADD
If you use the ROUTE ADD command and add an incorrect entry, the entry is not added to the route table. No message is displayed indicating that the entry is incorrect and has not been added.



MORE INFORMATION
The correct format for the ROUTE ADD command is:

route add MASK



STATUS
Microsoft has confirmed this to be a problem in Windows NT versions 3.1, 3.5, and 3.51 and in TCP/IP-32 for Windows for Workgroups version 3.11. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.

Additional query words: prodnt wfw wfwg tcpip prodtcp32

Keywords: kbnetwork KB131667

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