PQ51208: EZZ6649I NOT ABLE TO CREATE GROUP XXXX

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• DNS issuing message EZZ6649I message indicating a group
  can not be created or connections only being routed to one
  system when multiple systems are registered.  DNS will not
  create th group or route the work because not all the IP
  addresses for the TCPIP stacks are registered with WLM.
  The IP address was deregistered when the device for the IP
  address was stopped.  However, when the device was
  restarted, the IP address is not registered again.  The WLM
  registration is called from routine Send_LinkTrap.  This
  routine is not being called when the device activates
  because the DIFSAP_RetryCount is non-zero.  This prevents a
  SNMP Linkup trap being sent and WLM from being updated with
  the active IP addresses.  The DIFSAP_RetryCount is non-zero
  because we have entered recovery code, due to a CM_CLEAR_IND
  being returned from the device.
  .
  VERIFICATION STEPS:
  1) A dns -d 11 trace will show message no intersect when
     trying to process a group.  The list of IP addresses from
     TCPIP will also lose an IP address when the device is
     restarted.
  2) A Ctrace with options IOCTL,VTAM, CLAW will show a call
     to WLM Registration when the device stops.  However,
     there will not be another call to WLM Registration
     when the device starts again.  When the device starts,
     ctrace record Device Initialization Complete will be
     written.  The DIF prior to that will show a non-zero
     value at offset 112, the DIFSAP_RetryCount.
  .
  Additional Symptoms
  SNMP traps not being sent for device activation
  DNS/WLM balancing not occurring
  .
  KEYWORDS:
  DNS CLAW device wlm tcpip
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of the IBM Communications Server   *
  *                 for z/OS Version 1 Release 2 IP:             *
  *                 CLAW and WLM                                 *
  ****************************************************************
  * PROBLEM DESCRIPTION: Following a device failure a CLAW       *
  *                      device may not be re-registered with    *
  *                      WLM after successful connection         *
  *                      recovery.                               *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  While executing CM_CLEAR_IND connection recovery logic for a
  CLAW device, EZBIFIRE, an automatic recovery timer, initiated an
  additional recovery attempt. The additional recovery processing
  resulted in a failure to invoke WLM registration logic which
  also performs a DNS update. A named message:EZZ6649E named: WLM
  group not created indicated a problem with a member of that
  particular group. All connections were routed to a single
  system.
  +-------------------------------------------------------------+
  + 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

• EZBIFIRE's device connection recovery logic is amended to
  correctly invoke the WLM registration operation after
  successful connection versus SAP recovery processing.
  
  * Cross Reference between External and Internal Names
  

Temporary fix

Comments

APAR Information

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

  PQ49263

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

  UQ56868

Modules/Macros

• EZBIFIUT
  

Fix information

• Fixed component name

  TCP/IP V3 MVS

• Fixed component ID

  5655HAL00

Applicable component levels

• R120 PSY UQ56868

     UP01/09/17 P F109

Fix is available

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