regarding TCP_FIN_TIMEOUT

Wed Jul 28 08:03:05 UTC 2010

Yes, you can write the value in all files, but it hasn't any real effect....

I've tried write values manually (echo 15 > 
/proc/sys/net//ipv4/tcp_fin_timeout ), also I've tried with sysctl 
(sysctl -w net.ipv4.tcp_fin_timeout=15).

Then, I see the files with:

cat   ------>         cat /proc/sys/net//ipv4/tcp_fin_timeout

or

sysctl ----->          sysctl net.ipv4.tcp_fin_timeout

All methods write and show correctly my own value (15), but SO continue 
using his defaults value (60 seconds).

I've tried to restarting the network service and restarting the system 
(doing before permanent, these change) , but nothing change.

Regards and Thank you.

El 28/07/2010 7:41, amiteshsahay at aol.com escribió:
>   Hello,
>
> I myself tried to do the steps that you had mentioned the email, but it was of no use.
>
> I then did the following steps as shown in the screenshot , I think I have got it.
>
> [root at amit ~]# cat /proc/sys/net//ipv4/tcp_fin_timeout
> 60
> [root at amit ~]# cat>  /proc/sys/net//ipv4/tcp_fin_timeout
> 30
> [root at amit ~]# cat /proc/sys/net//ipv4/tcp_fin_timeout
> 30
>
>
> To make sure that the changes are made in the right file, I went all the way don to the TCP_FIN_TIMEOUT file, and saw that the changes were there.
>
>
> [root at amit ~]# /sbin/service network restart
> Shutting down interface eth0:                              [  OK  ]
> Shutting down loopback interface:                          [  OK  ]
> Bringing up loopback interface:                            [  OK  ]
> Bringing up interface eth0:
> Determining IP information for eth0... done.
>                                                             [  OK  ]
> [root at amit ~]# cat /proc/sys/net//ipv4/tcp_fin_timeout
> 30
> [root at amit ~]# cd /proc/sys/net//ipv4/
> [root at amit ipv4]# cd tcp_fin_timeout
> bash: cd: tcp_fin_timeout: Not a directory
> [root at amit ipv4]# vi tcp_fin_timeout
>
> 30
> ~
> ~
> ~
> ~
> ~
> ~
> ~
> ~
> ~
> ~
> ~
> ~
> ~
> ~
> ~
> ~
> ~
> ~
> ~
> ~
> ~
> ~
> ~
> ~
> ~
> ~
> ~
> ~
> ~
> ~
> ~
> ~
> ~
> ~
> ~
> ~
> ~
> ~
> "tcp_fin_timeout" 1L, 3C
>
> [root at amit ipv4]# cat tcp_fin_timeout
> 30
>
> As you could see that the changes are there, so I guess that you can make it to 15 sec.
>
>
> Try it and let us know
>
>
> Regards,
>
> Amitesh Sahay
>
>
>
>
>
>
>
>
>
>
>
>
>
> -----Original Message-----
> From: redhat-list-request<redhat-list-request at redhat.com>
> To: redhat-list<redhat-list at redhat.com>
> Sent: Mon, Jul 26, 2010 9:31 pm
> Subject: redhat-list Digest, Vol 77, Issue 23
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> Today's Topics:
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>     1. Reduce Time_Wait timeout doesn't work...
>        (Francisco J. M?rquez G?mez)
>     2. Reduce TIME_WAIT timeout doesn't work...
>        (Francisco J. M?rquez G?mez)
>     3. wget (Sir June)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 23 Jul 2010 13:38:09 +0200
> From: "Francisco J. M?rquez G?mez" 	<fjmarquez at chguadalquivir.es>
> To: redhat-list at redhat.com
> Subject: Reduce Time_Wait timeout doesn't work...
> Message-ID:<4C497F21.8080105 at chguadalquivir.es>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> Hello!
>
> I'm new in this list. I hope you can help me and I can help to other
> from now.
>
> I'm trying reduce the timeout of TIME_WAIT tcp connections status, but I
> don't get it.
>
> I set the value of /proc/sys/net/ipv4/tcp_fin_timeout to 15:
>
> echo 15>  /proc/sys/net/ipv4/tcp_fin_timeout
>
> I think that this should be sufficient, but the SO continue kill
> connections after 60 seconds of TIME_WAIT, instead of 15...
>
> Can you help me?
>
>
>
> ------------------------------
>
> Message: 2
> Date: Mon, 26 Jul 2010 09:24:13 +0200
> From: "Francisco J. M?rquez G?mez" 	<fjmarquez at chguadalquivir.es>
> To: redhat-list at redhat.com
> Subject: Reduce TIME_WAIT timeout doesn't work...
> Message-ID:<4C4D381D.1050204 at chguadalquivir.es>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> Hello!
>
> I'm new in this list. I hope you can help me and I can help to other
> from now.
>
> I'm trying reduce the timeout of TIME_WAIT tcp connections status, but I
> don't get it.
>
> I set the value of /proc/sys/net/ipv4/tcp_fin_timeout to 15:
>
> echo 15>  /proc/sys/net/ipv4/tcp_fin_timeout
>
> I think that this should be sufficient, but the SO continue kill
> connections after 60 seconds of TIME_WAIT, instead of 15...
>
> Can you help me?
>
>
>
> ------------------------------
>
> Message: 3
> Date: Mon, 26 Jul 2010 08:37:30 -0700 (PDT)
> From: Sir June<sir_june at yahoo.com>
> To: General Red Hat Linux discussion list<redhat-list at redhat.com>
> Subject: wget
> Message-ID:<220823.65532.qm at web65709.mail.ac4.yahoo.com>
> Content-Type: text/plain; charset=us-ascii
>
> Hi,
>
> I've been trying some wget options to download
> "http://archive.kernel.org/fedora-archive/core/updates/5/i386/"  (only the
> contents of i386)
> to my current directory but it only downloads index.html and robots.txt
>
>
> # pwd
> /5/i386
> # wget -r  -nc http://archive.kernel.org/fedora-archive/core/updates/5/i386/
>
> it creates the directory hierarchy and downloads index and robots only.  I just
> want to get all the files that are inside the i386.
>
> what options should i use?
>
>
> thanks,
> Sir June
>
>
>
>
>
>
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-- 

Francisco J. Márquez Gómez
Servicio de Informática (Área de sistemas)
Confederación Hidrográfica del Guadalquivir
Tel.: 954.348.778
fjmarquez at chguadalquivir.es
www.chguadalquivir.es