IZ73827: LARGE RECEIVE BEHAVIOR IS DIFFERENT WITH AND WITHOUT ETHERCHANNE APPLIES TO AIX 5300-08

Obtain the fix for this APAR.

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 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 5.3

• Fixed component ID

  5765G0300

Applicable component levels

• R530 PSY U832242

     UP10/05/17 I 1000

PTF to Fileset Mapping

• U832242 devices.common.IBM.ethernet.rte 5.3.8.6