KnowledgeBase Archive

An Archive of Early Microsoft KnowledgeBase Articles

View on GitHub

Q129625: SNA Server: Event 18 Includes Sense Data = 00320008

Article: Q129625
Product(s): Microsoft SNA Server
Version(s): WINDOWS:2.0,2.1,2.11,3.0 (all SP),4.0,4.0 SP1,4.0 SP2,4.0 SP3
Operating System(s): 
Keyword(s): kbinterop kbnetwork
Last Modified: 13-JUN-2001

-------------------------------------------------------------------------------
The information in this article applies to:

- Microsoft SNA Server, versions 2.0, 2.1, 2.11, 3.0 SP1, 3.0 SP2, 3.0 SP3, 3.0 SP4, 4.0, 4.0 SP1, 4.0 SP2, 4.0 SP3, on platform(s):
   - the operating system: Microsoft Windows NT 
-------------------------------------------------------------------------------

SYMPTOMS
========

If the host sends an UNBIND in response to an SNA Server BIND attempt to
activate independent LU6.2 sessions, SNA Server logs the following event into
the Windows NT application event log:

  Event: 18
  Description: APPC session activation failure: BIND negative response
  or UNBIND request received:

  Sense data = 0032xxxx
  Connection = <connection name>
  LU alias = <local LU name>
  PLU alias = <remote LU name>
  Mode name = < SNASVCMG or LU6.2 mode name>

where 0032 means UNBIND, and xxxx is the unbind type. Under SNA Server 2.1, the
"unbind type" is converted internally as follows:

Event log    Actual UNBIND type
-------------------------------
0007          FE   session failure
0008          0F   cleanup
0009          06   invalid session parameters
0010          0C   unrecoverable LU failure

Under SNA Server 2.11 or 3.0, the actual unbind type is logged in the "sense
data" field in Event 18.

Note that 0032xxxx is not SNA Sense data.

NOTE: Chapter 5 of the "IBM SNA Formats Guide" lists all unbind types and their
format. The most common unbind type logged during session activation is:

  Sense data = 00320008

This indicates the route extension used by the LU-LU session has become
inoperative, thus forcing the deactivation of the identified LU-LU session.

NOTE: The Sense data field includes an SNA sense code if the host responds with
SNA sense data instead of an UNBIND. SNA sense data codes are listed in Chapter
9 of the "IBM SNA Formats Guide".

CAUSE
=====

This situation can occur when there is a configuration mismatch between SNA
Server and the host system (for example, VTAM or CICS), or when the CICS region
(matching the SNA Server Remote APPC LU name) is not running.

RESOLUTION
==========

To correct this problem, correct the configuration mismatch or ensure the CICS
region (matching the SNA Server Remote APPC LU name) is running. The SNA Server
2.1 and 3.0 Administrator's Guide includes sample VTAM and CICS parameters for
independent LU6.2 (see page 111-116 in the 2.1 Admin Guide). Follow this sample
configuration to check for configuration mismatches between SNA Server and the
host.

Additional query words: prodsna

======================================================================
Keywords          : kbinterop kbnetwork 
Technology        : kbAudDeveloper kbSNAServSearch
Version           : WINDOWS:2.0,2.1,2.11,3.0 (all SP),4.0,4.0 SP1,4.0 SP2,4.0 SP3

=============================================================================

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.