A fix is available
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
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 number
PH04703
Reported component name
TCP/IP FOR Z/VM
Reported component ID
5735FAL00
Reported release
710
Status
CLOSED UR1
PE
NoPE
HIPER
NoHIPER
Special Attention
YesSpecatt / New Function / Xsystem
Submitted date
2018-10-30
Closed date
2019-05-13
Last modified date
2019-09-26
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
SC24626701 | SC24626802 | GC24627001 | SC24627101 | SC24627201 |
GC24628602 | GC24629402 | SC24630102 |
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.
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Document Information
Modified date:
26 September 2019