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IV67318: ETHERCHANNEL TOTAL FAILURE IN 802.3AD MODE WITH BACKUP ADAPTER APPLIES TO AIX 7100-03

A fix is available

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APAR status

  • Closed as program error.

Error description

  • 802.3ad link aggregation with a backup adapter defined
    where the switch port connected to the backup adapter is
    not configured as 802.3ad mode experiences etherchannel
    total failure if the below condition is met;
    
    1) all main adapters get link down,
    2) backup adapter becomes the active channel,
    3) then later one of main adapters's link becomes up but
    LACP negotiation on this port is not completed
    

Local fix

  • Configure switch port of backup adapter as 802.3ad mode
    

Problem summary

  • In IEEE802.3ad mode, force failover from backup to primary
    channel may not work and hence backup will remain active
    until etherchannel is rebuild(rmdev/mkdev).
    This behavior will lead to total etherchannel
    failure when backup goes down while primary link is up.
    

Problem conclusion

  • Etherchannel driver code is fixed to allow force failover from
    backup to primary.
    

Temporary fix

Comments

  • 6100-08 - use AIX APAR IV70151
    6100-09 - use AIX APAR IV64034
    7100-02 - use AIX APAR IV70271
    7100-03 - use AIX APAR IV67318
    

APAR Information

  • APAR number

    IV67318

  • Reported component name

    AIX V7.1

  • Reported component ID

    5765H4000

  • Reported release

    710

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2014-11-27

  • Closed date

    2015-02-21

  • Last modified date

    2015-09-30

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

    IV64034

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

Fix information

  • Fixed component name

    AIX V7.1

  • Fixed component ID

    5765H4000

Applicable component levels

  • R710 PSY U865692

       UP15/05/19 I 1000

PTF to Fileset Mapping



Document information

More support for: AIX Enterprise Edition

Software version: 710

Operating system(s): AIX

Reference #: IV67318

Modified date: 30 September 2015