A fix is available
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 number
VM66219
Reported component name
VM CP
Reported component ID
568411202
Reported release
710
Status
CLOSED UR1
PE
NoPE
HIPER
NoHIPER
Special Attention
YesSpecatt / New Function / Xsystem
Submitted date
2018-10-30
Closed date
2019-05-14
Last modified date
2020-03-25
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
SC24626701 | SC24626802 | GC24627001 | SC24627101 | SC24627201 |
GC24628602 | GC24629402 | SC24630102 |
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.
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Document Information
Modified date:
25 March 2020