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PM51856: SIP PROXY MUST RESPOND WITH AN ERROR WHEN SESSIONS BECOME UNREACHABLE

Fixes are available

7.0.0.23: WebSphere Application Server V7.0 Fix Pack 23
8.0.0.4: WebSphere Application Server V8.0 Fix Pack 4
7.0.0.25: WebSphere Application Server V7.0 Fix Pack 25
8.0.0.5: WebSphere Application Server V8.0 Fix Pack 5
7.0.0.27: WebSphere Application Server V7.0 Fix Pack 27
8.0.0.6: WebSphere Application Server V8.0 Fix Pack 6
7.0.0.29: WebSphere Application Server V7.0 Fix Pack 29
8.0.0.7: WebSphere Application Server V8.0 Fix Pack 7
8.0.0.8: WebSphere Application Server V8.0 Fix Pack 8
7.0.0.31: WebSphere Application Server V7.0 Fix Pack 31
7.0.0.27: Java SDK 1.6 SR13 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.33: WebSphere Application Server V7.0 Fix Pack 33
8.0.0.9: WebSphere Application Server V8.0 Fix Pack 9
7.0.0.35: WebSphere Application Server V7.0 Fix Pack 35
8.0.0.10: WebSphere Application Server V8.0 Fix Pack 10
7.0.0.37: WebSphere Application Server V7.0 Fix Pack 37
8.0.0.11: WebSphere Application Server V8.0 Fix Pack 11
7.0.0.39: WebSphere Application Server V7.0 Fix Pack 39
8.0.0.12: WebSphere Application Server V8.0 Fix Pack 12
7.0.0.41: WebSphere Application Server V7.0 Fix Pack 41
8.0.0.13: WebSphere Application Server V8.0 Fix Pack 13
7.0.0.43: WebSphere Application Server V7.0 Fix Pack 43
8.0.0.14: WebSphere Application Server V8.0 Fix Pack 14
7.0.0.45: WebSphere Application Server V7.0 Fix Pack 45
8.0.0.15: WebSphere Application Server V8.0 Fix Pack 15
7.0.0.23: Java SDK 1.6 SR10 FP1 Cumulative Fix for WebSphere
7.0.0.25: Java SDK 1.6 SR11 Cumulative Fix for WebSphere Application Server
7.0.0.27: Java SDK 1.6 SR12 Cumulative Fix for WebSphere Application Server
7.0.0.29: Java SDK 1.6 SR13 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.45: Java SDK 1.6 SR16 FP60 Cumulative Fix for WebSphere Application Server
7.0.0.31: Java SDK 1.6 SR15 Cumulative Fix for WebSphere Application Server
7.0.0.35: Java SDK 1.6 SR16 FP1 Cumulative Fix for WebSphere Application Server
7.0.0.37: Java SDK 1.6 SR16 FP3 Cumulative Fix for WebSphere Application Server
7.0.0.39: Java SDK 1.6 SR16 FP7 Cumulative Fix for WebSphere Application Server
7.0.0.41: Java SDK 1.6 SR16 FP20 Cumulative Fix for WebSphere Application Server
7.0.0.43: Java SDK 1.6 SR16 FP41 Cumulative Fix for WebSphere Application Server

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APAR status

  • Closed as program error.

Error description

  • Session Initiation Protocol (SIP) proxy must respond with an
    error when sessions become unreachable.
    

Local fix

  • NA
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server V7.0 and V8.0 Session Initiation     *
    *                  Protocol (SIP) Proxy.                       *
    ****************************************************************
    * PROBLEM DESCRIPTION: SIP Proxy does not respond with an      *
    *                      error if a UDP message can not be       *
    *                      delivered to an application server.     *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    SIP UDP requests that are addressed to a specific partition ID
    are dropped at the SIP Proxy if the corresponding application
    server is not functioning.   No error response is generated.
    

Problem conclusion

  • Previously, the SIP Proxy dropped UDP requests when the
    Application Server was not reachable, instead of responding
    with an error.   Most of the time, a failover occurs and the
    retransmitted UDP packets are delivered to the proper
    application server.
    
    The SIP Proxy will now drop UDP requests for a certain amount
    of time.   If the partition ID does not failover within this
    time, the SIP Proxy will respond with an error.
    
    To enable this functionality, please add this new timeout
    value to the SIP Proxy custom properties --->
    udpLSNFailoverTimeout.   The SIP Proxy custom properties are
    located here ---> WebSphere proxy servers > proxy1 > SIP proxy
    settings > Custom properties.  Set this property to the amount
    of time the SIP Proxy should wait for the failover to occur.
    
    The fix for this APAR is currently targeted for inclusion in
    fix packs 7.0.0.23 and 8.0.0.4.  Please refer to the
    Recommended Updates page for delivery information:
    http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
    

Temporary fix

  • N/A
    

Comments

APAR Information

  • APAR number

    PM51856

  • Reported component name

    WEBS APP SERV N

  • Reported component ID

    5724H8800

  • Reported release

    700

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2011-11-09

  • Closed date

    2012-02-22

  • Last modified date

    2012-02-22

  • 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

    WEBS APP SERV N

  • Fixed component ID

    5724H8800

Applicable component levels

  • R700 PSY

       UP

  • R800 PSY

       UP



Document information

More support for: WebSphere Application Server
General

Software version: 7.0

Reference #: PM51856

Modified date: 22 February 2012