PK77195: EZZ6034I TELNET CONN 000102BC LU **N/A** CONN DROP ERR 3003

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• TN3270 mode connection dropped with RC 3003 (RC_LU_ALL_IN_USE)
  following logon attempt to a target host application.  Several
  LUs were available for use.
  

Local fix

• Specify SEQUENTIALLU in the Telnet server profile.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of Communications Server for       *
  *                 z/OS Version 1 Release 8,                    *
  *                 z/OS Version 1 Release 9,                    *
  *                 z/OS Version 1 Release 10 IP Telnet          *
  *                 facilities.                                  *
  ****************************************************************
  * PROBLEM DESCRIPTION: Client connection drops;                *
  *                      EZZ6034I message issued with            *
  *                      CONN DROP ERR 3003                      *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The problem may be summarized as follows:
  
  1. The following statements were specified in the profile
     for the Telnet server:
  
     NOSEQUENTIALLU
     NOTN3270E
  
     IPGROUP IPALL
       0.0.0.0:0.0.0.0
     ENDIPGROUP
  
     LUGROUP  GRPTEST
       TCPM1051..TCPM1054
     ENDLUGROUP
  
     LUMAP    GRPTEST  IPGRP,IPALL
  
     ALLOWAPPL TSO*
       LU TCPM1051
       LU TCPM1052
       LU TCPM1053
       LU TCPM1054
  
  2. A TN3270 mode connection was started with Telnet server.
     When a logon applid(tso) was issued from the client, the
     Telnet server assigned LU TCPM1051 to the client.  The
     logon was successful.
  
  3. A second TN3270 mode connection was established with the
     Telnet server.  When a logon applid(tso) command was issued
     the second connection dropped with:
  
     RCODE: 3003-00  LUs are all in use.
  
     LUs TCPM1052 through TCPM1054 should have been available.
     The problem does not occur if either TN3270E mode
     connections are used or SEQUENTIALLU is specified.
  +-------------------------------------------------------------+
  + Please check our Communications Server for OS/390 homepages +
  + for common networking tips and fixes.  The URL for these    +
  + homepages can be found in Informational APAR II11334.       +
  +-------------------------------------------------------------+
  

Problem conclusion

• To resolve this problem, module EZBTPGLP has been corrected
  to avoid prematurely exiting an LU range search for an
  available LU.  Module EZBTDALU has been added for maintenance
  purposes only.
  
  * Cross Reference between External and Internal Names
  

Temporary fix

• *********
  * HIPER *
  *********
  

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

  UK42856 UK42857 UK42858

Modules/Macros

• EZBTDALU EZBTPGLP
  

Fix information

• Fixed component name

  TCP/IP V3 MVS

• Fixed component ID

  5655HAL00

Applicable component levels

• R1A0 PSY UK42856

     UP09/02/26 P F902

• R180 PSY UK42857

     UP09/02/26 P F902

• R190 PSY UK42858

     UP09/02/26 P F902

Fix is available

• Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.