IBM Support

IV52500: MPING VERIFICATION IGNORES CUSTOM MCAST IP AT FIRST SYNC

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APAR status

  • Closed as program error.

Error description

  • This problem occurs even if the fix of PowerHA 712
    apar IV33964 (or equivalent for other releases) is
    already installed.
    During the initial cluster configuration, the first
    Verification and Synchronization will fail during the
    mping check with these messages:
     Verifying multicast communication with mping.
     --- 228.168.101.43 mping statistics ---
     5 packets transmitted, 0 packets received,
        100% packet loss
     ERROR: Multicast communication with node <nodename>
         using mping failed
    
    This problem can only occur when the nodes are not part
    yet of the CAA cluster.
    

Local fix

  • Enable multicast on the network also for the IP
    address 228.168.101.43/4098
    

Problem summary

  • During the initial cluster configuration, the first
    Verification and Synchronization will fail during the
    mping check with these messages:
    Verifying multicast communication with mping.
    --- 228.168.101.43 mping statistics ---
    5 packets transmitted, 0 packets received,
    100% packet loss
    ERROR: Multicast communication with node <nodename>
    using mping failed
    
    This problem can only occur when the nodes are not part
    yet of the CAA cluster.
    

Problem conclusion

  • Added a check to ensure customer configured multicast IP
    address is used,if exists, with mping during initial cluster
    verify & sync.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV52500

  • Reported component name

    POWERHA SYSMIR

  • Reported component ID

    5765H3900

  • Reported release

    711

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2013-11-23

  • Closed date

    2013-11-23

  • Last modified date

    2014-02-07

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

    IV45509

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

Fix information

  • Fixed component name

    POWERHA SYSMIR

  • Fixed component ID

    5765H3900

Applicable component levels

  • R711 PSY U855261

       UP14/02/07 I 1000

PTF to Fileset Mapping

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Document Information

Modified date:
20 October 2021