Article: Q161190
Product(s): Microsoft SNA Server
Version(s): WINDOWS:2.0,2.1,2.11,2.11 SP1
Operating System(s):
Keyword(s): kbnetwork
Last Modified: 12-JUN-2001
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The information in this article applies to:
- Microsoft SNA Server, versions 2.0, 2.1, 2.11, 2.11 SP1
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SYMPTOMS
========
The TN3270 client loses its session, receiving an error 520. The Application
Event Logs on the computer running SNA Server show an event 603 with the
following description:
TN3270E Service Error 520
Internal LU session state error in FirstInboundByteProcess.
State error id - 2 (expected CONT,SND,RCV).
Current state - LU-LU, SNDNXMT
The TN3270 Server traces show the following:
>09/24 10:33:35.850 (+ smidgen ) Event=TEV_DataFromSNA
Thread = 0x0000010B Session = 0x00180478 Socket = 0x00000238
VCB address=0x00180684
verb_length=0x0044 verb=0x0052 (RUI) opcode=0x8004 (WRITE)
sid=0x000000A8 correlator=0x00180478 post_handle=0x00000150
prim_rc=LUA_OK sec_rc=LUA_SEC_RC_OK
lu_norm lua_data_length=0x00000000
TH Only efi=0 oadi=0 daf=00 oaf=00 snf=0002
RH +RSP FMD fi=0 sdi=0 bci=1 eci=1 (Only)
83 80 00 dr1=1 dr2=0 ri=0 qri=0 pi=0
bbi=0 ebi=0 cdi=0 csi=0 edi=0 pdi=0
>09/24 10:33:35.850 (+ smidgen ) Event=TEV_CRTOutboundWriteComplete
Thread = 0x0000010B Session = 0x00180478 Socket = 0x00000238
State = OPER InputState = IGNORE OutputState = SNAREAD
Toggle = LU-LU LU State = SND CanQueue = DATAPEND
Bracket = INB DTActive
>09/24 10:33:35.860 (+ 10 msecs) Event=TEV_LogicError
FirstInboundByteProcess
LUSessionStateConfused
CAUSE
=====
A session status flag in the TN3270 Server is not being reset when the host
unbinds and rebinds a session.
RESOLUTION
==========
To resolve this problem, obtain the hotfix mentioned below.
STATUS
======
Microsoft has confirmed this to be a problem in SNA Server versions 2.0, 2.1,
2.11, and 2.11 Service Pack 1. This problem was corrected in the latest
Microsoft SNA Server 2.11 U.S. Service Pack. For information on obtaining the
service pack, query on the following word in the Microsoft Knowledge Base
(without the spaces):
S E R V P A C K
Additional query words: sp1 prodsna
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Keywords : kbnetwork
Technology : kbAudDeveloper kbSNAServSearch kbSNAServ200 kbSNAServ211 kbSNAServ210 kbSNAServ211SP1
Version : WINDOWS:2.0,2.1,2.11,2.11 SP1
Issue type : kbbug
Solution Type : kbfix
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