How to Turn Off ECN [was: internet not working with arjan's 2.6 testkernels]

Paul Morgan paul.morgan at jumanjihouse.com
Mon Nov 3 04:19:36 UTC 2003


On Sun, 2003-11-02 at 12:43, Paul Morgan wrote:
> Tim Kossack asked:
> >hm, i followed michael's advice (thank you very much) and at least my
> >laptop is working now when i turn off ECN.
> >however, it seems that i have to newly turn it off every time i
> >reboot-is this normal?
> >is there a way to switch it off forever?
> 
> Add the following line to /etc/sysctl.conf
> net.ipv4.tcp_ecn = 1

sorry, it should be net.ipv4.tcp_en=0 to disable.

> 
> RHL/Fedora reads this file on every startup and adjusts settings
> accordingly. If you make changes to /etc/sysctl.conf, you can run 
> `sysctl -p` to force the system to re-read the file without a reboot.
> 
> As root you can run `sysctl -a | less` to read all about the other
> settings available through this cool facility (such as for firewalls,
> etc.). I prefer this as opposed to echoing to proc, but it may not be
> portable to other flavors of Linux. sysctl.conf settings take effect
> earlier than they would if placed in rc.local.
> 
> HTH,
> Paul
> 
> 
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