MF60107 - LIC-COMM-TCPIP-PERFM Remote support VPN excessive gate conte

TYPE PROGRAM  REL  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

-----------------------------------------------
Excessive gate contention was seen on an IP filtering cache gate
when a remote support VPN connection was established. The
customer had no other filter rules.

CORRECTION FOR APAR MA44597 :
-----------------------------
The IP filtering threshold for using the cache was mistakenly
set too low causing unnecessary gate contention. This threshold
has been increased which will remove this gate contention when
the only rules are due to a remote support VPN connection.

If the system has numerous other filter or VPN connection rules,
the filter cache gate will still be used, so no performance
change should be expected.

CIRCUMVENTION FOR APAR MA44597 :
--------------------------------
None.


Activation Instructions


None.




Special Instructions


********************************************************************
THE FOLLOWING ARE SUPERSEDED SPECIAL INSTRUCTIONS. IF THE SUPERSEDED
PTF HAS ALREADY BEEN APPLIED AND ITS SPECIAL INSTRUCTION FOLLOWED,
IT IS NOT NECESSARY TO FOLLOW THAT SPECIAL INSTRUCTION AGAIN.
********************************************************************

SPECIAL INSTRUCTIONS FOR SUPERSEDED PTF MF56430 :
=================================================

o clean up leaked memory, restart tcpip after applying this PTF:
endtcp
strtcp

SPECIAL INSTRUCTIONS FOR SUPERSEDED PTF MF49151 :
=================================================

If VPN is active on this system, perform the following process when PTF
is applied/removed

endtcpsvr *vpn
apply/remove PTF
strtcpsvr *vpn

SPECIAL INSTRUCTIONS FOR SUPERSEDED PTF MF55785 :
=================================================

after apply/remove of this PTF, perform the following:
endtcp
strtcp

SPECIAL INSTRUCTIONS FOR SUPERSEDED PTF MF53862 :
=================================================

Perform the following to apply/remove this PTF:
> remove all filter rules
> apply/remove PTF
> reapply filter rules.

SPECIAL INSTRUCTIONS FOR SUPERSEDED PTF MF51249 :
=================================================

After Apply/remove this PTF, perform the following:
endtcpsvr *vpn
strtcpsvr *vpn

SPECIAL INSTRUCTIONS FOR SUPERSEDED PTF MF53802 :
=================================================

Before remove/apply this PTF, perform the following:
- remove any packet rules (rmvtcptbl *all)
- apply/remove PTF
- reapply packet rules.


Default Instructions

THIS PTF CAN BE APPLIED IMMEDIATE OR DELAYED.



Supersedes

PTF/FIX NO(S).  APAR TITLE LINE
--------------  ------------------------------------------------------------
   MF59522      LIC-COMM-TCPIP-UNPRED IPv6 IPsec connection fails
   MF54648      TCPIP-OTHER Ipsec Performance Improvement
   MF56430      TCPIP-INCORROUT memory leak in ipsec inbound processing
   MF49151      TCPIP-INCORROUT  memory leak in ESP crypto
   MF56397      INCORROUT-TCPIP timing window with rule load and ifc end
   MF55785      TCPIP-INCORROUT ipv6 ping fails if ipv4 ipsec and permitalli
   MF55785      TCPIP-INCORROUT ipv6 ESP packets hang TCP if no filter rules
   MF53862      TCPIP-INCORROUT IKE packets not returned if NAT rules applie
   MF51249      TCPIP-INCORROUT IPv6 Tunnel mode fragmentation issue
   MF53802      TCPIP-OTHER NAT rules performance issues

Summary Information

System i Support