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PM67724: SIP REQUEST THAT EXCEEDS THE MTU VALUE MIGHT NOT SWITCH FROM UDP TO TCP.

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APAR status

  • Closed as program error.

Error description

  • Session Initiation Protocol (SIP) request that exceeds the MTU
    value might not switch from UDP to TCP.
    

Local fix

  • N/A
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All IBM WebSphere Application Server        *
    *                  Feature                                     *
    *                  Pack for Communications Enabled             *
    *                  Applications                                *
    *                  (CEA) users                                 *
    ****************************************************************
    * PROBLEM DESCRIPTION: Sending a large SIP request that        *
    *                      exceeds the MTU value does not cause    *
    *                      a transport switch from UDP to TCP.     *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    An exception is being thrown when a package exceeds the MTU
    value and a certain custom property
    ("javax.sip.strict.outbound.local.port") is false which is its
    default value. This flag does not allow sending a package over
    a listening point that is different from the one mentioned in
    the SIP message. In our case the "if" statement that checks
    the custom property value was supposed to throw the exception
    on the property "javax.sip.strict.outbound.local.port" having a
    true value and not false.
    

Problem conclusion

Temporary fix

Comments

APAR Information

  • APAR number

    PM67724

  • Reported component name

    CEA FEATUREPACK

  • Reported component ID

    5724J0855

  • Reported release

    700

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-06-27

  • Closed date

    2012-07-10

  • Last modified date

    2012-07-10

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

    PM66054

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

Fix information

  • Fixed component name

    CEA FEATUREPACK

  • Fixed component ID

    5724J0855

Applicable component levels

  • R700 PSY

       UP

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Document Information

Modified date:
10 July 2012