VM66219: VSWITCH PRIORITY QUEUING

Obtain the fix for this APAR.

APAR status

• Closed as new function.

Error description

• VSwitch support is updated to exploit the OSA-Express feature's
  Priority Queuing capabilities.  In addition, z/VM is enhanced
  to improve data transmission from a virtual NIC to a physical
  network via the VSwitch Uplink Port.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of VSwitch networks                *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  ****************************************************************
  * RECOMMENDATION: APPLY PTF                                    *
  ****************************************************************
  With the PTFs for APARs VM66219 and PH04703, z/VM
  provides support for VSwitch Priority Queuing.
  

Problem conclusion

Temporary fix

• FOR RELEASE VM/ESA CP/ESA R710 :
  PREREQ: NONE
  CO-REQ: NONE
  IF-REQ: UI62768(PH04703-7VMTCP10)
  

Comments

• Virtual Switch Priority Queuing Enhancement
  
  z/VM is enhanced to improve data transmissions from a virtual
  NIC to a physical network via the virtual switch uplink port.
  Internal virtual switch data transmission is changed from a
  first-in, first-out (FIFO) order to a four-level priority
  queuing scheme.  By default, the virtual switch will distinguish
  between virtual switch and virtual NIC transmissions to the
  physical network. Virtual switch transmissions required to
  manage an uplink port or virtual NIC are sent to the physical
  network ahead of any virtual NIC transmissions. This will insure
  virtual switch management is maintained during high bandwidth
  uplink port usage.
  Virtual switch support is added to exploit OSA-Express feature's
  priority queuing capabilities.  By turning on Virtual Switch
  Priority Queuing, instead of activating a single QDIO output
  queue on the uplink port, the z/VM virtual switch will
  establish four QDIO output queues for outbound data
  transmissions.  The four QDIO output queues provide four
  independent interfaces to the OSA-Express feature, one for each
  priority.  The highest priority queue (Queue 0) is used by the
  z/VM virtual switch to provide switch management communications
  and the other three priorities (Queue 1-3) may be configured by
  a system administrator to prioritize outbound transmissions to
  the physical network for virtual NICs connected to the virtual
  switch.
  
  Refer to z/VM Connectivity Version 7 Release 1 (SC24-6267-01)
  for more information.
  
  DIRMAINT support for VSwitch Priority Queuing requires VM66223.
  
  To support APARS VM66219 and PH04703, new editions of the
  following publications are available:
      SC24-6267-01: Connectivity
      SC24-6268-02: CP Commands and Utilities Reference
      GC24-6270-01: CP Messages and Codes
      SC24-6271-01: CP Planning and Administration
      SC24-6272-01: CP Programming Services
      GC24-6286-02: General Information
      GC24-6294-02: Migration Guide
      SC24-6301-02: Performance
  
  Additional information can be found at
  http://www.vm.ibm.com/virtualnetwork/
  
  ×**** PE20/03/25 PTF IN ERROR. SEE APAR VM66363  FOR DESCRIPTION
  

APAR Information

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

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

  UM35465

Modules/Macros

• CBITABLE CHPID    CONTROLL CPLOAD   HCPCBI   HCPCCLBK HCPCPL
  HCPCSIBK HCPDDEV  HCPDGQ   HCPDIR   HCPIDX   HCPIOX   HCPIPP
  HCPIPY   HCPIQD   HCPIQE   HCPIQQ   HCPIQR   HCPIVA   HCPIVC
  HCPIVD   HCPIVH   HCPLAN   HCPLANBK HCPLLX   HCPMDLAT HCPMES
  HCPMESA  HCPMESB  HCPMNO   HCPMPA   HCPMTF   HCPMVN   HCPMXD
  HCPMXI   HCPMXRBK HCPMYN   HCPNDF   HCPNDM   HCPNDMBK HCPNDQ
  HCPNET   HCPNIC   HCPNICBK HCPNID   HCPNIDBK HCPNTLBK HCPOM1
  HCPRDEV  HCPRLF   HCPRLI   HCPSCFBK HCPSWA   HCPSWB   HCPSWC
  HCPSWD   HCPSWF   HCPSWG   HCPSWH   HCPSWI   HCPSWIBK HCPSWK
  HCPSWL   HCPSWM   HCPSWQ   HCPSWS   HCPSWY   HCPUCP   HCPUCQ
  HCPVDEV  HCPVLC   HCPVLF   HCPVLQ   HCPVLS   HCPVLU   HCPVNABK
  HCPVNC   HCPVNET  HCPVNS   HCPVQA   HCPVQB   HCPVQS   HCPVQT
  HCP1882E HCP1982I HCP2832E HCP2838I HCP3022E HCP3224I HCP3230I
  LAN      LGRNETWK MRIODBPA MRIODBPS MRIODVSR MRIODVSW MRVNDLSD
  MRVNDLSU MRVNDSES VIRTNIC  VMLAN    VMRELOCA VSWITCH
  

Fix information

• Fixed component name

  VM CP

• Fixed component ID

  568411202

Applicable component levels

• R710 PSY UM35465

     UP19/05/22 P 1902  

Fix is available

• Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.