SDLC Multiport Connection Only Works with One DSPU at a Time

ID: Q196237

The information in this article applies to:

Microsoft SNA Server, versions 3.0, 4.0
Microsoft SNA Server version 3.0 Service Packs 1, 2, and 3
Microsoft SNA Server version 4.0 Service Pack 1

SYMPTOMS

Only one SDLC connection to a Downstream PU (DSPU) will function correctly even though multiple SDLC connections are configured for concurrent usage to multiple DSPUs over the same SDLC adapter. Even though only one connection is actually in use at a time, SNA Server Manager shows an active status for all of the configured DSPU SDLC connections. This was reported by a customer using the IBM MPCA SDLC adapter, but can occur with any SDLC adapter that uses the SDLC "dumb card" driver interface provided by SNA Server.

RESOLUTION

SNA Server 3.0

To resolve this problem, obtain the latest service pack for SNA Server version 3.0. For additional information, please see the following article in the Microsoft Knowledge Base:

Q184307 How to Obtain the Latest SNA Server Version 3.0 Service Pack

SNA Server 4.0

This problem was corrected in the latest SNA Server version 4.0 U.S. Service Pack. For information on obtaining this Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces):


   S E R V P A C K

STATUS

Microsoft has confirmed this to be a problem in the products listed at the beginning of this article. This problem was first corrected in SNA Server 3.0 Service Pack 4.

Additional query words: MPCA DSPU

Keywords :
Version : WINDOWS:3.0,4.0
Platform : WINDOWS
Issue type : kbbug