RE: TCP/IP tuning

MTU: TCP should be configured for *LIND and the Ethernet line should be
configured for whatever your LAN does.  1496, for instance, if you don't
do Jumbo frames.  Use 8996 for Jumbo frames if your switch supports it.

Also consider CHGTCPA (CFGTCP/3) and up the send & receive buffers to
1MB: 1048576 if you're running at Gb speed. 


John A. Jones, CISSP
Americas Information Security Officer
Jones Lang LaSalle, Inc.
V: +1-630-455-2787 F: +1-312-601-1782
john.jones@xxxxxxxxxx

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Condon, Mike
Sent: Thursday, June 01, 2006 10:17 AM
To: Midrange Systems Technical Discussion
Subject: RE: TCP/IP tuning

What about settings for TOS and MTU?

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of rob@xxxxxxxxx
Sent: Thursday, June 01, 2006 10:10 AM
To: Midrange Systems Technical Discussion
Subject: RE: TCP/IP tuning


WRKSYSVAL QSTRUPPGM
see also RTVCLSRC

Rob Berendt
--
Group Dekko Services, LLC
Dept 01.073
PO Box 2000
Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com





"Don Cavaiani" <dcavaiani@xxxxxxxxxxxxx> 
Sent by: midrange-l-bounces+rob=dekko.com@xxxxxxxxxxxx
06/01/2006 10:50 AM
Please respond to
Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>


To
"Midrange Systems Technical Discussion" <midrange-l@xxxxxxxxxxxx>
cc

Subject
RE: TCP/IP tuning






Thank you.  I'm not sure where to find the "start up" program ?? 

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Chris Bipes
Sent: Thursday, June 01, 2006 9:22 AM
To: Midrange Systems Technical Discussion
Subject: RE: TCP/IP tuning

Add to you start up program, chglind ....

Change the line description now to online at IPL *NO.  You can make that
change with it live.

As to performance increase, that depends on you network traffic.  BUT at
10M most switches are only half duplex so make sure you can run 100M
Full duplex on the hubs / switches as well as the adapter card.  Also
make sure the AS400 is plugged into a switch, not a hub.  Big difference
will be see there. 


Christopher Bipes
Information Services Director
CrossCheck, Inc.


-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Don Cavaiani
Sent: Thursday, June 01, 2006 7:10 AM
To: Midrange Systems Technical Discussion
Subject: TCP/IP tuning

I see that my Line Description for my Ethernet adapter is set to Half
Duplex.  I as using unmanaged Hubs/switches which will adjust to the
AS/400 settings.  Will it be a noticeable performance improvement to
switch that to Full Duplex?  It looks like all LAN users will need to
off of the AS/400 system as TCP/IP must be stopped before this parameter
may be changed.

--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing
list To post a message email: MIDRANGE-L@xxxxxxxxxxxx To subscribe,
unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx Before posting, please take a
moment to review the archives at http://archive.midrange.com/midrange-l.