Microsoft KB Archive/151234

= Packets Misrouted on RAS Client w/Multiple Outbound Connection =

Article ID: 151234

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows NT Workstation 3.5
 * Microsoft Windows NT Workstation 3.51
 * Microsoft Windows NT Server 3.5
 * Microsoft Windows NT Server 3.51

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This article was previously published under Q151234





SYMPTOMS
When you use a Windows NT Remote Access client to make multiple simultaneous outbound connections to different remote TCP/IP networks, some packets may not be sent or may be sent via the wrong modem.

This problem only occurs if two or more modems are attempting to send packets to their respective remote networks at the same time.



CAUSE
The cause is currently under investigation.



RESOLUTION
There is currently no resolution or workaround to this problem.



STATUS
Microsoft has confirmed this to be a problem in Windows NT version 3.51. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.



MORE INFORMATION
To illustrate, suppose your RAS client has three modems, A, B, and C. Modem A dials RAS server A, modem B dials RAS server B, and modem C dials RAS server C. The IP addresses for both ends of the RAS connection are as follows:

  Modem A (192.1.1.2) -/\/\/\/\/\/\/\/-> Server A (192.1.1.1)

  Modem B (193.1.1.2) -/\/\/\/\/\/\/\/-> Server B (193.1.1.1)

  Modem C (194.1.1.2) -/\/\/\/\/\/\/\/-> Server C (194.1.1.1)

If modem A is in the process of sending a ping to the address of RAS server A, modem B and modem C would be unable to successfully ping RAS server B and RAS server C (respectively).

If modem B attempts to ping RAS server B while modem A is in the process of pinging RAS server A, the ping would be unsuccessful and either four instances of "HARDWARE ERROR" or four instances of "DESTINATION HOST UNREACHABLE" are returned for the results of the ping to server B.

"DESTINATION HOST UNREACHABLE" is returned because the ping that should have been sent to RAS server B is instead sent to the IP address of server A, which modem B has no connection to.

For example, the ping command would be "PING 193.1.1.1", but the result would look like the following:

Reply from 192.1.1.1: DESTINATION HOST UNREACHABLE Reply from 192.1.1.1: DESTINATION HOST UNREACHABLE Reply from 192.1.1.1: DESTINATION HOST UNREACHABLE Reply from 192.1.1.1: DESTINATION HOST UNREACHABLE

Additional query words: prodnt

Keywords: kbnetwork KB151234

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