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PI93796: SIP Container uses a wrong interface for a loopback request

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APAR status

  • Closed as program error.

Error description

  • In a multi-homed environment when an ACK request arrives from th
    

Local fix

  • N/A
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All Session Initiation Protocol (SIP)       *
    *                  container users of IBM WebSphere            *
    *                  Application                                 *
    *                  Server                                      *
    ****************************************************************
    * PROBLEM DESCRIPTION: In a multi-homed environment when a     *
    *                      request arrives from the SIP Container  *
    *                      internal queue (a.k.a. a loopback       *
    *                      request), the SIP Container might       *
    *                      choose a wrong interface when trying    *
    *                      to send a request to the destination.   *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    In a multi-homed environment when a request arrives from the
    SIP Container internal queue (a.k.a. a loopback request), the
    SIP
    Container might choose a wrong interface when trying to send a
    request to the destination.
    

Problem conclusion

  • A fix was made in the SIP Container code so the IBM proprietary
    IBM-PO header field which was causing the issue is not added to
    loopback requests. The following SIP Container custom property
    should be applied to the server:
    
    Name: add.ibm-po.loopback.msg
    Value: false
    
    Log into the WebSphere administrative console.
    Click Application servers > <server_name> > SIP container >
    Custom properties
    Add the new custom property by clicking on New
    In the Name field enter: add.ibm-po.loopback.msg
    In the Value field enter: false
    Click on the OK button
    Restart the server
    
    The fix for this APAR is currently targeted for inclusion in
    fix packs 8.5.5.14 and 9.0.0.8. Please refer to the Recommended
    Updates page for delivery information:
    http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
    

Temporary fix

Comments

APAR Information

  • APAR number

    PI93796

  • Reported component name

    WEBSPHERE APP S

  • Reported component ID

    5724J0800

  • Reported release

    850

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2018-02-14

  • Closed date

    2018-03-17

  • Last modified date

    2018-03-17

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

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

Fix information

  • Fixed component name

    WEBSPHERE APP S

  • Fixed component ID

    5724J0800

Applicable component levels

  • R850 PSY

       UP

  • R900 PSY

       UP

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Document Information

Modified date:
17 March 2018