Re: FTP limitation

From the V5R4 help panel, CHGFTPA sets both. The V6R1 help panel is the

same.

Change FTP Attributes (CHGFTPA)
........................................................................
Inactivity timeout (INACTTIMO) - Help

Specifies the number of seconds the system allows an FTP control and
data connection to remain inactive before it is ended. When an FTP
connection is inactive longer than the specified length of time, it is
ended.

Notes:

1. The system may wait an additional 1 to 120 seconds to end the
inactive connection.



On Thu, May 17, 2012 at 7:56 AM, Vern Hamberg <vhamberg@xxxxxxxxxxx> wrote:

There are actually 2 timeout setting - one for data and one for
inactivity, as I recall. Only one is set in the CHGFTPA command.

http://search400.techtarget.com/tip/Setting-FTP-time-outs has some
really good information - in short, to set both timeouts to 5 minutes
from your Windows client, find a way to run this --

QUOTE TIME 900 900

HTH
Vern

On 5/17/2012 7:11 AM, John Jones wrote:

FTP has a "control channel" and a "data channel". What could be

happening

is the transfer is taking long enough that the control channel is timing
out and aborting the transfer even though the data channel is busy. This
timeout is controlled in the FTP server settings. There could also be a
firewall timeout issue at play. We used to encounter this when FTPing
large files but I can't remember if it was the firewall or server that

was

at fault. Wait .. Spot-checking our dev LPAR I see we raised our
inactivity timeout (default: 5 minutes) to the max value. CHGFTPA/F4

lets

you see the settings.

Alternate: Have you tried any other FTP clients?
http://filezilla-project.org/ is free. There's also CuteFTP and a host

of

others.

A final thought which is something of a longshot but does your

environment

have an IDS/IPS or DLP network monitor? Basically an appliance that

might

be finding something in the data that it thinks should be blocked.

On Wed, May 16, 2012 at 11:31 AM, Dave Snyder<DSnyder@xxxxxxxx> wrote:

I have been struggling with an issue for several months and am getting

no

resolution from those I am working with, on all ends.
I am trying to FTP (using WS-FTP) a text file from an FTP server to a
local machine - have tried Windows XP and 7 with no differences. The

file

gets "truncated", chopped down to 3,260,000 bytes if it is more than

that.

We get the entire thing if it is less. I get no errors on either end.
Anyone have any idea what might be restricting this file transmission

size?

I tried it from my home and it worked so I am guessing there is

something

network related on our front doing it, but we cannot figure it out. Any
help is appreciated.

Dave

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