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IZ72187: LARGE RECEIVE BEHAVIOR IS DIFFERENT WITH AND WITHOUT ETHERCHANNE APPLIES TO AIX 6100-05

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APAR status

  • Closed as program error.

Error description

  • On a VIO server, large_receive setting on the adapter is
ON by default
but its OFF by default on the Shared Ethernet Adapter
(SEA).
Normally this results in LRO being off for the system.
However when an etherchannel is used instead of a stand
alone
adapter even if LRO settings are off on SEA it can result
in large_receive being performed contrary to
documentation.

Local fix

  • Disable LRO off on the real adapter explicitly.
Remove the adapter from the Ethchan config to change this
and add back to Ethchan.

Problem summary

  • When SEA is created over etherchannel, the LRO setting
(off by default for SEA) doesn't propogate to the underlying
physical adapters.

Problem conclusion

  • Etherchannel driver should propogate the LRO settings
to the underlying adapters.

Temporary fix

  • 



Comments


    

  • 5300-08 - use AIX APAR IZ73827
5300-09 - use AIX APAR IZ73803
5300-10 - use AIX APAR IZ73730
5300-11 - use AIX APAR IZ73642
5300-12 - use AIX APAR IZ72175
6100-01 - use AIX APAR IZ72374
6100-02 - use AIX APAR IZ72383
6100-03 - use AIX APAR IZ65739
6100-05 - use AIX APAR IZ72187
6100-04 - use AIX APAR IZ72536
6100-05 - use AIX APAR IZ72187
6100-06 - use AIX APAR IZ72612
7100-01 - use AIX APAR IV00567

    



APAR Information




    

  • APAR number
    IZ72187
    • 

  • Reported component name
    AIX 610 STD EDI
    • 

  • Reported component ID
    5765G6200
    • 

  • Reported release
    610
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Submitted date
    2010-03-04
    • 

  • Closed date
    2010-03-04
    • 

  • Last modified date
    2013-04-07
    • 





    

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

    
IZ65739
    

    • 

  • 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  U823597
       UP10/04/16  I  1000
    • 



PTF to Fileset Mapping








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            07 April 2013
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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