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MF58513 - LIC-COMM-TCPIP-LOOP SYSTEM HANG WITH TR8

PTF ( Program Temporary Fixes ) Cover letter


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Abstract

LIC-COMM-TCPIP-LOOP SYSTEM HANG WITH TR8


Pre/Co-Requisite PTF / Fix List

REQ  LICENSED           PTF/FIX  LEVEL

TYPE PROGRAM  RELEASE   NUMBER   MIN/MAX  OPTION
---- -------- --------- -------  -------  ------
NONE



NOTICE:
-------
Application of this PTF may disable or render ineffective programs that
use system memory addresses not generated by the IBM translator,
including programs that circumvent control technology designed to limit
interactive capacity to purchased levels.  This PTF may be a prerequisite
for future PTFs.  By applying this PTF you authorize and agree to the
foregoing.

This PTF is subject to the terms of the 'IBM License Agreement for Machine
Code', the terms of which were provided in a printed document that was
delivered with the machine.

SUBJECT TO ANY WARRANTIES WHICH CAN NOT BE EXCLUDED OR EXCEPT AS EXPLICITLY
AGREED TO IN THE APPLICABLE LICENSE AGREEMENT OR AN APPLICABLE SUPPORT
AGREEMENT, IBM MAKES NO WARRANTIES OR CONDITIONS EITHER EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OR CONDITIONS OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON INFRINGEMENT,
REGARDING THE PTF.





APAR Error Description / Circumvention

-----------------------------------------------
After putting on TR8, system locks up after just a couple of
users get signed on.
MSD shows all processors running the same code - #toirhdl

CORRECTION FOR APAR MA43735 :
-----------------------------
When using proxy ARP for a Virtual IP address (VIPA) where the
VIPA is set as the associated local interface for the physical
interface addresses, packets sent with the VIPA as the source
address attempt to prefer routes bound to the VIPA's proxy agent
when selecting from duplicate routes. An error in this route
selection caused an infinite loop, which is now fixed.

CIRCUMVENTION FOR APAR MA43735 :
--------------------------------
Setting different route priorities for the duplicate routes will
prevent the loop.


Activation Instructions


None.




Special Instructions


None.


Default Instructions

THIS PTF CAN BE APPLIED IMMEDIATE OR DELAYED.



Supersedes

PTF/FIX NO(S).  APAR TITLE LINE
--------------  ------------------------------------------------------------
   MF57898      LIC-COMM-TCPIP VIPA outbound route selection

Summary Information

System.............................. i
Models..............................
Release............................. V7R2M0
Licensed Program............... 5770999
APAR Fixed.......................... View details for APAR MA43735
Superseded by:...................... View fix details for PTF MF59766
Recompile........................... N
Library............................. QSYS
MRI Feature ........................ NONE
Cum Level........................... C4276720


System i Support

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Document information

More support for: i family

Software version: V7R2M0

Operating system(s): OS/400

Reference #: MF58513

Modified date: 30 April 2014