IV04325: SHUTDOWN OF VIOS SLOW WITH 10GB CT3 ADAPTER AND SEA FAILOVER APPLIES TO AIX 5300-12

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• When SEA failover is setup over 10Gb CT3 ethernet adapter
  (10 Gigabit Ethernet-SR PCI-Express Host Bus Adapter
  (2514300014108c03)), a graceful shutdown of the VIOS
  could take a long time.
  
  With certain switch configurations, such as Cisco Nexus
  switch, the switch port could get disabled due to
  "pause rate limit err disable".
  This indicates that the switch received a lot of
  "pause frames" in a short time duration. The switch stats
  will indicate very high number under
  Rx pause counters.
  

Local fix

• Problem is unique to the 10Gb CT3 adapter with SEA
  failover.
  So a setup that does not use the 10Gb CT3 adapter under
  SEA
  failover will work fine.  (so use a different type of
  ethernet adapter)
  

Problem summary

• When SEA failover is setup over 10Gb CT3 ethernet adapter
  (10 Gigabit Ethernet-SR PCI-Express Host Bus Adapter
  (2514300014108c03)), a graceful shutdown of the VIOS
  could take a long time.
  With certain switch configurations, such as Cisco Nexus
  switch, the switch port could get disabled due to
  "pause rate limit err disable".
  This indicates that the switch received a lot of
  "pause frames" in a short time duration. The switch stats
  will indicate very high number under Rx pause counters.
  

Problem conclusion

• Proper initialization of hardware is done at adapter
  enable/disable ioctls.
  

Temporary fix

Comments

APAR Information

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

  IV02351

• 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 U844666

     UP11/10/10 I 1000

PTF to Fileset Mapping

• U844666 devices.ethernet.ct3.rte 5.3.12.4