IBM Support

MF57230 - OSP-MSGTCP26A2-PAR-940XCOM TCP26A2 MESSAGES ARE BEING POSTED

PTF Cover Letter


PTF ( Program Temporary Fixes ) Cover letter


Order this fix

Abstract

OSP-MSGTCP26A2-PAR-940XCOM TCP26A2 MESSAGES ARE BEING POSTED


Pre/Co-Requisite PTF / Fix List

REQ  LICENSED      PTF/FIX  LEVEL

TYPE PROGRAM  REL  NUMBER   MIN/MAX  OPTION
---- -------- ---  -------  -------  ------
PRE  5770999  710  MF52888   00/00    0000
CO   5770999  710  MF55850   00/00    0000



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

-----------------------------------------------
TCP26A2 messages are being posted many times per day

CORRECTION FOR APAR MA42941 :
-----------------------------
TCP26A2 was being issued whenever the system switched from
IGMPv3 (Internet Group Management Protocol version 3) or MLDv2
(Multicast Listener Discovery version 2)  to an earlier IGMP/MLD
version for compatibility with an older router, to notify the
administrator that the system would not be able to notify a
possible SSM (source specific multicast) router of source
filters used when starting SSM channels. When no queries from
the older IGMP/MLD router have been received for several
minutes, the system reverts to IGMPv3 or MLDv2 mode. In some
cases, this switch was happening several times per day.

Processing has been changed to now issue the TCP26A2 message at
most once per line per STRTCP (or IPL).

CIRCUMVENTION FOR APAR MA42941 :
--------------------------------
None.


Activation Instructions


None.




Special Instructions


None.


Default Instructions

THIS PTF CAN BE APPLIED IMMEDIATE OR DELAYED.



Supersedes

PTF/FIX NO(S).  APAR TITLE LINE
--------------  ------------------------------------------------------------
   MF55851      OSP-COMM-TCPIP-OTHER-UNPRED TCP TIMESTAMP OPTION
   MF54194      LIC-COMM-TCPIP Repeated TCP26A2 SSM error messages received
   MF52889      LIC-COMM-TCPIP-CFG new ipconfig macro options
   MF51735      LIC-COMM-TCPIP-WAIT DEADLOCK
   MF49394      LIC-COMM-TCPIP Support RFC 5746
   MF48092      OSP-COMM-TCPIP-OTHER-INCORROUT IGMP and MLD issues

Summary Information

System..............................i
Models..............................
Release.............................V7R1M0
Licensed Program...............5770999
APAR Fixed..........................View details for APAR MA42941
Superseded by:......................View fix details for PTF MF99011
Recompile...........................N
Library.............................QSYS
MRI Feature ........................NONE
Cum Level...........................C3298710


System i Support

IBM disclaims all warranties, whether express or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. By furnishing this document, IBM grants no licenses to any related patents or copyrights. Copyright © 1996,1997,1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 IBM Corporation. Any trademarks and product or brand names referenced in this document are the property of their respective owners. Consult the Terms of use link for trademark information.

[{"Type":"MASTER","Line of Business":{"code":"LOB57","label":"Power"},"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SWG60","label":"IBM i"},"Platform":[{"code":"PF012","label":"IBM i"}],"Version":"7.1.0"},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG15V","label":"PTF Cover Letters - OS\/400 General"},"Component":"","ARM Category":[],"Platform":[{"code":"PF012","label":"IBM i"}],"Version":"V7R1M0","Edition":"","Line of Business":{"code":"","label":""}}]

Document Information

Modified date:
03 July 2013