DLC 802.2 Connection Stays Pending After Remote System Restart (185449)

SYMPTOMS

When the remote system (for example, an IBM host or AS/400) is brought down and back up again, one or more SNA Server Token Ring or Ethernet 802.2 DLC connections may stay in a Pending state and fail to automatically recover. If the SNA Server 802.2 DLC connection is manually stopped and started, the connection goes to an Active state.

This problem may occur when two or more 802.2 connections share the same SNA 802.2 DLC link service, which is common when using the SNA Server 802.2 DLC MultiSap link service included with SNA Server 3.0 Service Pack 2 and later versions.

CAUSE

The SNA 802.2 DLC link service (Snadlc.dll) incorrectly cancels a DLC timer associated with an outstanding TEST or XID request. The timer is cancelled improperly after a Close Link occurs on a different connection.

RESOLUTION

SNA Server 3.0

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

184307 How to Obtain the Latest SNA Server Version 3.0 Service Pack

SNA Server 4.0

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

   S E R V P A C K

WORKAROUND

To work around this problem you can configure separate 802.2 DLC link services for each connection, but this is not recommended.

STATUS

Microsoft has confirmed that this is a problem in SNA Server, versions 3.0, 3.0 SP1, 3.0SP2, 3.0 SP3, and4.0. This problem was first corrected in SNA Server 3.0 Service Pack 4.