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IZ92850: 4-PORT GIGABIT ETHERNET WILL REPORT INVALID CHECKSUM WITH VLAN APPLIES TO AIX 6100-06

A fix is available

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • 4-Port Gigabit Ethernet PCI-Express Adapter
    (e4143a16e4143009) configured with checksum_offload
    and/or
    large_send will send packets with bad tcp checksum.
    This is seen only when sending vlan packets, thus coming
    from a vlan adpater or a VIO client using SEA with vlan.
    

Local fix

  • disable both checksum_offload & large_send on the
    physical
    adapter.
    

Problem summary

  • Setup vlan and enable checksum offload,there will be an initial
    delay when using the vlan interface.
    

Problem conclusion

  • Update the tx_bd_nbytes in case of vlan tagged frames.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IZ92850

  • Reported component name

    AIX 610 STD EDI

  • Reported component ID

    5765G6200

  • Reported release

    610

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2011-01-24

  • Closed date

    2011-01-24

  • Last modified date

    2013-03-24

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

    IZ91269

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

Fix information

  • Fixed component name

    AIX 610 STD EDI

  • Fixed component ID

    5765G6200

Applicable component levels

  • R610 PSY U833132

       UP11/05/06 I 1000

PTF to Fileset Mapping

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Document Information

Modified date:
24 March 2013