Microsoft KB Archive/309150

= PRB: Host Integration Server and SNA Server send incorrect Format 3 XID commands over a channel connection =

Article ID: 309150

Article Last Modified on 12/4/2007

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APPLIES TO


 * Microsoft Host Integration Server 2004 Standard Edition
 * Microsoft Host Integration Server 2000 Standard Edition
 * Microsoft SNA Server 4.0
 * Microsoft SNA Server 3.0 Service Pack 4

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This article was previously published under Q309150



SYMPTOMS
Microsoft Host Integration Server and Microsoft SNA Server use exchange identification (XID) commands to negotiate their link roles. Format 3 XID commands contain a setting for a data link control (DLC) type.

When you connect through a channel connection, Host Integration Server and SNA Server may incorrectly mark outgoing format 3 XID commands with a DLC type of SDLC (0x01) instead of System/370 channel to controller (0x02).



CAUSE
If you do not configure the Local Node ID setting on a channel connection, the SNA Server service incorrectly sends out the format 3 XID command with a DLC type of SDLC (0x01).



RESOLUTION
To resolve this problem, configure a Local Node ID on the System Identification tab of the channel connection. You must do this even if the remote host system does not require a Local Node ID. In most cases, you can use the default Local Node ID of 05D FFFFF.



MORE INFORMATION
Byte 17 of the format 3 XID command represents the DLC type. For more information on XID commands, refer to the IBM SNA Formats documentation (IBM Document GA27-3136-12).

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 HIS2004

Keywords: kbprb KB309150

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