Microsoft KB Archive/296083

= SNA Server DLC Connection Fails Through Cisco DLSw and VLAN =

Article ID: 296083

Article Last Modified on 2/22/2007

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APPLIES TO


 * Microsoft SNA Server 3.0 Service Pack 4
 * Microsoft SNA Server 4.0
 * Microsoft Host Integration Server 2000 Standard Edition

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This article was previously published under Q296083



SYMPTOMS
If a Data Link Control (DLC) connection is activated in SNA Server or Host Integration Server (HIS) 2000 and the connection is through a Cisco Systems router that is implementing Data Link Switching (DLSw) (DLC protocol tunneled in IP) in a virtual LAN (VLAN) Ethernet environment, the connection attempt may fail. The application event log may post an event 230, &quot;remote station not responding.&quot; If the VLAN software is shut down so only DLSw is operational, the connection attempt will be successful. If several Host Integration Server 2000 or SNA Server servers are on one segment, another symptom is that some but not all of the servers will connect, but not the same servers each time.



CAUSE
SNA Server or Host Integration Server 2000 is sending polls to the destination address specified in the connection configuration, but no response is returned from the destination.



RESOLUTION
Update the Cisco routers that are implementing the VLAN and switching &quot;fabric&quot; to IOS release 12.1.6.

The third-party products that are discussed in this article are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.

Additional query words: HIS 2000

Keywords: kbinfo KB296083

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