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Q309150: PRB: SNA Server Sends Incorrect Format 3 XID Commands

Article: Q309150
Product(s): Microsoft SNA Server
Version(s): 3.0,4.0
Operating System(s): 
Keyword(s): kbsna300sp1 kbsna300sp2 kbsna300sp3 kbsna300sp4 sna4 kbsna400sp1 kbsna400sp2 kbsna400sp
Last Modified: 07-JAN-2002

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The information in this article applies to:

- Microsoft SNA Server, versions 3.0, 4.0 
- Microsoft Host Integration Server 2000 
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SYMPTOMS
========

SNA Server and Host Integration Server 2000 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, SNA Server and Host Integration
Server 2000 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 discussed in this article are manufactured by vendors
independent of Microsoft; we make no warranty, implied or otherwise, regarding
these products' performance or reliability.


Additional query words: HIS 2000

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Keywords          : kbsna300sp1 kbsna300sp2 kbsna300sp3 kbsna300sp4 sna4 kbsna400sp1 kbsna400sp2 kbsna400sp3 kbsna400sp4 Kbhostintegserv2000 
Technology        : kbAudDeveloper kbSNAServSearch kbHostIntegServ2000 kbSNAServ300 kbSNAServ400 kbSNAServ300SP3 kbSNAServ300SP1 kbSNAServ400SP1 kbSNAServ400SP2 kbSNAServ400SP3 kbSNAServ400SP4 kbSNAServ300SP2 kbSNAServ300SP4
Version           : :3.0,4.0
Issue type        : kbprb

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