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IV66999: FC 5287 ADAPTER SENDING LLDP MULTICAST CAUSES NETWORK FAILURE APPLIES TO AIX 7100-03

A fix is available

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APAR status

  • Closed as program error.

Error description

  • FC 5287 network adapter by default sends LLDP multicast
    packet.
    If an etherchannel is configured using this adapter
    without
    custom MAC address, network communication thru this
    etherchannel
    stop working after etherchannel failover to the backup
    adapter
    occurs. The reason is that the primary adapter keep
    sending LLDP
    multicast packet containing its MAC address while the
    backup
    adapter also uses the primary MAC address after failover
    and
    this confuses the network switch since they sees the same
    valid
    MAC address from two port (primary and backup) at the
    same time.
    

Local fix

  • Disable LLDP function of the network switch.
    

Problem summary

  • FC 5287 network adapter by default sends LLDP multicast
    packet. If an etherchannel is configured using this adapter
    without custom MAC address, network communication thru this
    etherchannel stop working after etherchannel failover to the
    backup adapter occurs.
    

Problem conclusion

  • ODM attribute introduced to enable or disable LLDP on need
    basis.
    

Temporary fix

Comments

  • 6100-08 - use AIX APAR IV69979
    6100-09 - use AIX APAR IV66995
    7100-02 - use AIX APAR IV63948
    7100-03 - use AIX APAR IV66999
    

APAR Information

  • APAR number

    IV66999

  • Reported component name

    AIX V7.1

  • Reported component ID

    5765H4000

  • Reported release

    710

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2014-11-17

  • Closed date

    2014-11-17

  • Last modified date

    2015-09-30

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

    IV63948

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

    U869574

Fix information

  • Fixed component name

    AIX V7.1

  • Fixed component ID

    5765H4000

Applicable component levels

  • R710 PSY U869574

       UP15/05/20 I 1000



Document information

More support for: AIX Enterprise Edition

Software version: 710

Operating system(s): AIX

Reference #: IV66999

Modified date: 30 September 2015