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PM29360: ENTERPRISE EXTENDER CSM 4K ECSA GROWTH EEDIAG,TEST=YES

A fix is available

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APAR status

  • Closed as program error.

Error description

  • CSM 4K ECSA growth SP231, KEY6 due to stranded EE Connectivity
    test response datafollowing repeated / automated
    EEDIAG,TEST=YES commands.
    Stranded storage will be in one of the segments within the 4K
    page and will have an eyecatcher of EE Connectivity Test.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All users of the IBM Communications Server   *
    *                 for z/OS Version 1 Release(s) 10, 11, and    *
    *                 12 IP:  Enterprise Extender                  *
    ****************************************************************
    * PROBLEM DESCRIPTION: Enterprise Extender CSM 4K ECSA storage *
    *                      leak processing EEDIAG,TEST=YES.        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    Enterprise Extender (EE) CSM 4K ECSA storage leak processing
    EEDIAG,TEST=YES.
    The storage leak occurs when the EE endpoint is IP connected
    via the IUTSAMEH (SAMEHOST) link.  The EE probe response is
    built in a 4K CSM ECSA buffer allocated by the EE endpoint
    TCP/IP stack.  The CSM ownership of the buffer is assigned to
    the TCP/IP routing stack when the packet is forwarded over
    the SAMEHOST link.  The TCP/IP routing stack fails to copy the
    CSM token when the packet is received over the SAMEHOST link,
    thus preventing the storage from being returned to CSM when
    the packet is forwarded to the IP network.
    This problem can only occur when running in a Common INET
    (CINET) environment with two or more TCP/IP stacks active and
    interconnected via the SAMEHOST link.
    
    
        +----+                                        +----+
        | EE |                                        | EE |
        +----+                                        +----+
          ||                                 ()         ||
      +--------+              +--------+    (  )    +--------+
      | TCP/IP |---IUTSAMEH---| TCP/IP |---(    )---| TCP/IP |
      +--------+              +--------+    (  )    +--------+
                                             ()
                                                    D NET,EEDIAG
    
    +-------------------------------------------------------------+
    + 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

  • EZBIFINB has been amended to copy the CSM token associated with
    the buffer containing the EEDIAG response packet when it is
    received over the SAMEHOST link.
    
    * Cross Reference between External and Internal Names
    

Temporary fix

Comments

APAR Information

  • APAR number

    PM29360

  • Reported component name

    TCP/IP V3 MVS

  • Reported component ID

    5655HAL00

  • Reported release

    1A0

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2010-12-21

  • Closed date

    2011-01-17

  • Last modified date

    2011-03-02

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

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

    UK64032 UK64033 UK64034

Modules/Macros

  • EZBIFINB EZBIFOUT EZBUDBYP TPSTMSG1
    

Fix information

  • Fixed component name

    TCP/IP V3 MVS

  • Fixed component ID

    5655HAL00

Applicable component levels

  • R1A0 PSY UK64032

       UP11/02/17 P F102

  • R1B0 PSY UK64033

       UP11/02/17 P F102

  • R1C0 PSY UK64034

       UP11/02/17 P F102

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.

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Document Information

Modified date:
02 March 2011