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IZ91148: EXTRA NIB FAILBACK TO PRIMARY DUE TO ICMP COUNT APPLIES TO AIX 5300-11

A fix is available

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APAR status

  • Closed as program error.

Error description

  • Etherchannel NIB with lossless failover enabled could
    experience
    unexpected failover or failback before link gets stable
    due to
    network delays. This occurs when the ICMP response
    doesn't
    come through the new active channel after a
    failover/failback
    within the specified period resulting in unnecessary
    failover
    or failback.
    

Local fix

  • Disable lossless failover in Etherchannel NIB
    

Problem summary

  • Etherchannel NIB with lossless failover enabled could result
    in unexpected failover or failback before link gets stable
    due to network delays when ICMP responses doesn't come
    within the specified period
    

Problem conclusion

  • Ensure that Etherchannel counters stays in sync when there are
    network delays preventing unnecessary failover or failback
    

Temporary fix

Comments

  • 5300-10 - use AIX APAR IZ91225
    5300-11 - use AIX APAR IZ91148
    5300-12 - use AIX APAR IZ90685
    6100-03 - use AIX APAR IZ80199
    6100-04 - use AIX APAR IZ93593
    6100-05 - use AIX APAR IZ93409
    6100-06 - use AIX APAR IZ84345
    7100-00 - use AIX APAR IZ95892
    

APAR Information

  • APAR number

    IZ91148

  • Reported component name

    AIX 5.3

  • Reported component ID

    5765G0300

  • Reported release

    530

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2010-12-16

  • Closed date

    2010-12-16

  • Last modified date

    2013-04-16

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

    IZ80199

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

Fix information

  • Fixed component name

    AIX 5.3

  • Fixed component ID

    5765G0300

Applicable component levels

  • R530 PSY U840316

       UP11/02/22 I 1000

PTF to Fileset Mapping

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Document Information

Modified date:
16 April 2013