PH04703: VSWITCH PRIORITY QUEUING - TCP/IP SUPPORT

Obtain the fix for this APAR.

APAR status

• Closed as new function.

Error description

• TCP/IP (VSwitch Controller) support required for VSwitch
  Priority Queuing (VM66219).
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users that want to exploit VSwitch Priority  *
  *                 Queuing.                                     *
  ****************************************************************
  * 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 R640 :
  PREREQ: PI99085 PH01192 PI99184 PH07752
  CO-REQ: NONE
  IF-REQ: NONE
  

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/
  

APAR Information

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

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

  UI62768

Modules/Macros

• CMNETST  TCBASTY  TCMIB    TCMON    TCPARSE  TCPIP    TCSWITCH
  TCTOOSD  TCUTIL
  

Fix information

• Fixed component name

  TCP/IP FOR Z/VM

• Fixed component ID

  5735FAL00

Applicable component levels

• R710 PSY UI62768

     UP19/05/14 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.