PH67661: Z/VM 7.4 TCPIP: FEATURE PACK - FEATURE 02 FIX 00

Obtain the fix for this APAR.

APAR status

• Closed as new function.

Error description

• EQDIO Virtual NIC Simulation
  ----------------------------
  Support is provided for creating simulated EQDIO adapters.
  Support was added to TCP/IP to configure an EQDIO Virtual NIC
  by default.
  
  
  Missing output for IPv6 Router type in IFCONFIG and NETSTAT
  -----------------------------------------------------------
  IFCONFIG and NETSTAT were missing the output for IPv6 Router
  Type under certain configurations.
  
  
  IP takeover improvements
  ------------------------
  The first packet after an IP takeover event was dropped.
  
  Improvements in the handling of EQDIO buffers
  ---------------------------------------------
  Enhancements were made in the way that TCP/IP handles buffers
  with EQDIO Adapters.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of z17 and LinuxOne Emperor 5 hardware *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  ****************************************************************
  * RECOMMENDATION: APPLY PTF                                    *
  ****************************************************************
  With the applicable PTFs applied, z/VM will provide support
  for the following:
  
  EQDIO Virtual NICs
  - TCP/IP has been enhanced to support EQDIO Virtual NICs.
  - IFCONFIG was updated to include support for EQDIO
    Virtual NICs. EQDIO Virtual NICs will be used by
    default. If EQDIO support is not available in the
    configuration, a QDIO Virtual NIC will be used instead.
  - When a Virtual NIC is configured via TCP/IP's DTCPARMS
    :vnic tag, an EQDIO Virtual NIC will be used by default.
    If EQDIO support is not available in the configuration,
    a QDIO Virtual NIC will be used instead.
  
  - With the enhancement for EQDIO, TCP/IP was missing the
    output for "IPv6 Router Type" in some configurations.
    The output has been restored.
  
  IP Takeover Improvements
  - After an IP takeover event, the first packet was often
    dropped. TCP/IP was enhanced to route the first packet
    to the adapter taking over the IP traffic.
  
  Improvements in the handling of EQDIO buffers
  - Performance improvements were made in TCP/IP's handling
    of EQDIO adapter buffers. Enhancements were made to
    handle buffers in batches for more efficient operation.
  
  Help File Updates
  - The helpfile for IFCONFIG was updated for support of
    EQDIO Virtual NICs.
  

Problem conclusion

Temporary fix

Comments

• The following publications have been updated for this item:
  GC24-6286-74 z/VM: General Information
  GC24-6294-74 z/VM: Migration Guide
  SC24-6331-74 z/VM: TCP/IP Planning and Customization
  
  Additional Keywords: D/T9175
  

APAR Information

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

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

Modules/Macros

• FPEQDIO  FPEQDIO2 FPIPDOW  FPI6DOW  IFCONFIG TCEQDIO  TCPARSE
  TCPRUN   TCVMVER  7VMTCP40
  

Fix information

• Fixed component name

  TCP/IP FOR Z/VM

• Fixed component ID

  5735FAL00

Applicable component levels

• R740 PSY UO05181

     UP25/10/06 I 1000  

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.