PN71412: MSGEZB4699E A220 : DEVICE DROPPING TOO LARGE OUTPUT PACKET.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• HYPERCHANNEL LINK on GATEWAY statement in profile.tcpip coded
  with a packet size of 65535 (64K). LARGEENVELOPEPOOLSIZE also
  equal to 65535. However, any packet above 32768 (32K) receives :
  msgEZB4699E A220 : Device dropping too large output packet.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: HiPPI users with large packets.              *
  ****************************************************************
  * PROBLEM DESCRIPTION: Packets of 32768 or greater are not     *
  *                      processed by TCP/IP. The maximum size   *
  *                      for buffers is set in TCBASTY at 32K    *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When TCP/IP receives a packet of >32K or larger it will cause a
  RESET. The maximum packet is set in the TCBASTY definitions at
  32768.
  

Problem conclusion

• Rather than just allowing for the documented 32K packets this
  APAR fix will provide for up to 65535 byte packets. That will
  satisfy this problem in the same way as the fix for PN73460 is
  to satisfy the requirement for HiPPI.
  

Temporary fix

• Customer testing required for 65535.
  

Comments

APAR Information

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

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

  UN82481

Modules/Macros

• EZAAI013 EZABB03J
  

Fix information

• Fixed component name

  TCP/IP V3 MVS

• Fixed component ID

  5655HAL00

Applicable component levels

• R310 PSY UN82481

     UP95/10/11 P F510

Fix is available

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