RE: TCPIP Configuration change

Bryan is correct that is on the line description and the line must be varied
off to change it. Still simple and very safe.

The TCP buffer size you can change anytime.

I would however offer some caution. Laine states the mainframe uses jumbo
frames already so most likely this will not apply to Laine, but for the
others on the list, if you start using jumbo frames, make sure all of the
switches, routers, and other network equipment is able to handle them as
well. Otherwise the switch will just bust the jumbo frame into smaller
ones, send them and then on the other side rebuild them. Not efficient at
all.

Also if you are using network installation for the OS or PTFs that line must
be set at 1496. It will not use jumbo frames on the "short stack" in the
LIC.

--
Jim Oberholtzer
Chief Technical Architect
Agile Technology Architects


-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of
Laine, Rogers
Sent: Thursday, September 11, 2014 2:28 PM
To: 'Midrange Systems Technical Discussion'
Subject: RE: TCPIP Configuration change

Bryan,

You may be on to something here.

From what I have read this would improve the transmission speeds both ways.

Both my options are set at 8192 so I may change them to *DFT (65,535).
Is this change just for FTP or also used for interactive users?
Still concerned of changing, so I may wait to the weekend while the system
is quite.
Thanks for your input.
Rogers

-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Bryan
Dietz
Sent: Thursday, September 11, 2014 2:05 PM
To: Midrange Systems Technical Discussion
Subject: Re: TCPIP Configuration change

as I recall that change(MTU) is at the LIND level, so any interface using
that line would need to be down.

One other thing I would look at is the Change TCP/IP Attributes
(CHGTCPA) command

the following might help transmissions.

TCP receive buffer size . . . . TCPRCVBUF TCP send buffer size . . . . . .
TCPSNDBUF

I think those changes take effect with the next time a connection is made.

--
Bryan




************************************************
This E-Mail transmission (and/or the documents accompanying it) may contain
information belonging to the sender which is confidential, privileged and/or
exempt from disclosure under applicable law. The information is intended
only for the use of the individual(s) or entity named above. If you are not
the intended recipient, you are hereby notified that any disclosure,
copying, distribution or the taking of any action in reliance on the
contents of this information is strictly prohibited. If you have received
this E-Mail transmission in error, please immediately notify us by return
E-Mail or telephone to arrange for return of its contents including any
documents.

--
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.