DLC Link Service Adapter Dropdown List Empty if More Than 11 Adapters Configured

• Microsoft SNA Server, versions 3.0, 3.0 SP1, 3.0 SP2, 3.0 SP3, 3.0 SP4, 4.0, 4.0 SP1, 4.0 SP2

SYMPTOMS

If there are more than 11 network adapters configured in Windows NT, with the DLC protocol bound to them, the Adapter dropdown list in the 802.2 DLC Link Service properties within SNA Manager is blank.

CAUSE

The 802.2 DLC link configuration uses a small buffer size to hold the list of adapter names. The drop-down list is being incorrectly blanked out because there are too many adapter names to fit in the buffer.

RESOLUTION

To resolve this problem, obtain the latest service pack for SNA Server version 4.0. For additional information, please see the following article in the Microsoft Knowledge Base:

Q215838 How to Obtain the Latest SNA Server Version 4.0 Service Pack

WORKAROUND

In the Control Panel, double-click Network, click the Bindings tab, and unbind the DLC protocol from some of the network adapters until there are 11 or fewer bound with DLC. The remaining network adapters that do have DLC bound to them now appear in the Adapter dropdown list in the 802.2 Link Service properties.

STATUS

Microsoft has confirmed this to be a problem in Microsoft SNA Server versions 3.0, 3.0Sp1, 3.0SP2, 3.0SP3, 3.0SP4, 4.0, 4.0SP1, and 4.0SP2. This problem was first corrected in SNA Server version 4.0 Service Pack 3.

MORE INFORMATION

The buffer size has been increased from 256 to 4096 to prevent this problem from occurring.

Additional query words:

Keywords : sna4sp3fix sna3 sna3sp1 sna3sp2 sna3sp3 sna3sp4 sna4 sna4sp1 sna4sp2
Version : WINDOWS:3.0,3.0 SP1,3.0 SP2,3.0 SP3,3.0 SP4,4.0,4.0 SP1,4.0 SP2
Platform : WINDOWS
Issue type : kbbug