VSWITCH PRIORITY QUEUING - TCP/IP SUPPORT
STAT= CLOSED UR1 FESN0461035- CTID= EN0313 ISEV= 4
SB18/10/30 RC18/10/30 CL19/05/13 PD SEV= 4
PE= SPEC/ATTN/Y TYPE= D
RCOMP= 5735FAL00 TCP/IP FOR Z/VM RREL= R710
FCOMP= 5735FAL00 TCP/IP FOR Z/VM PFREL= F TREL= T999
ACTION= SEC/INT= N DUP/
USPTF= UI62768 PDPTF= DUPS 0
DW18/10/30 RT18/10/30 SC FT RE
PT UP LP PV AP
EN FL LC19/05/15 RU19/05/14 OT
CT FR TD TYPE OF SOLUTION=
PROJECTED CLOSE CODE= CUST INST LVL/SU=
FAILING MODULE= TCPIP FAILING LVL/SU= 710
SYSROUTE OF: RET APAR= PS=
STATUS DETAIL= SHIPMENT RELIEF AVAILABLE=
COMP OPER ENV= 710
N
Y SPEC/ATTN/Y
TYPE OF SOLUTION=
PROJECTED CLOSE CODE= CUST INST LVL/SU=
FAILING MODULE= FAILING LVL/SU=
SYSROUTE OF: RET APAR= N PS=
STATUS DETAIL= N N N N N RELIEF AVAILABLE=
COMP OPER ENV= N
SYSRES= SYSIN= SYSOUT= CPU= RE-IPL=
OPTYPE= SPECIAL ACTIVITY= REGRESSION=
PRE-SCREEN NO.= RSCP= RS710
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/
MODULES/MACROS:
CMNETST TCBASTY TCMIB TCMON TCPARSE TCPIP TCSWITCH
TCTOOSD TCUTIL
SRLS:
SC24626701
SC24626802
GC24627001
SC24627101
SC24627201
GC24628602
GC24629402
SC24630102
RTN CODES:
APPLICABLE COMPONENT LEVEL/SU:
R710 PSY UI62768 UP19/05/14 I 1000
CIRCUMVENTION: