Re: FTP from AIX to Win Issue - Intermittent Connection Abort

From: Green, Simon (Simon.Green_at_EU.ALTRIA.COM)
Date: 07/29/05

  • Next message: Colin Jenkins: "rootvg disk failure" 
    Date:         Fri, 29 Jul 2005 12:16:32 +0200
To: aix-l@Princeton.EDU

    If that does prove to be the problem, (I'm not suggesting it is or isn't),
    there are some network options in AIX that can help: I think I posted
    something about that last year.
    The parameters were "tcp_nodelayack" and "tcp_finwait2". I changed
    "tcp_nodelayack" to 1 (default 0) and "tcp_finwait2" from the default of
    1200 to 120. (That's in half-seconds, I think, so the default was 10
    minutes and I cut it to 1 minute.)
    However, check that's really the problem before messing with it. 

    -- 
Simon Green
Altria ITSC Europe s.a.r.l.
AIX-L Archive at https://new-lists.princeton.edu/listserv/aix-l.html
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-----Original Message-----
From: IBM AIX Discussion List [mailto:aix-l@Princeton.EDU] On Behalf Of
Thomas Rupp
Sent: 29 July 2005 07:52
To: aix-l@Princeton.EDU
Subject: AW: FTP from AIX to Win Issue - Intermittent Connection Abort
Hi Alexandre,
 
I once had a similar problem with sending files from our IBM mainframe (VM)
to AIX.
Ours was caused by TCP/IP keeping too many connections open till all
possible connections were exhausted.
Have a look at netstat -a (or something similar) and count the number of
connections in state "CLOSE WAIT".
If I remember correctly this connections wait about 5 minute before they are
closed.
I think we solved the problem by reducing the wait time.
  • Next message: Colin Jenkins: "rootvg disk failure"

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