[LARTC] TOS in IP Header set to Minimize-Dealay - no difference

[LARTC] TOS in IP Header set to Minimize-Dealay - no difference

[ddaas]

Hi I have a 1024/128 ADSL connection.
I wanted to test the TOS field in IP Header.

So I started aMule and let it use the whole upstream (16KB).

Then I did: #iptables -A OUTPUT -t mangle -p tcp --dport 22 -j TOS 
--set-tos Minimize-Dellay (like here: 
http://lartc.org/howto/lartc.cookbook.interactive-prio.html)


Then I ssh to one of my server on the Internet. The delay was awful. I 
could use it...

So, It seams that the tos field of the iP header has no influence in 
prioritizing of my outgoing traffic !! Why? Did I miss something?


Thanks,
ddaas
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Re: [LARTC] TOS in IP Header set to Minimize-Dealay - no difference

[Andreas Unterkircher]

ddaas wrote:

> So, It seams that the tos field of the iP header has no influence in 
> prioritizing of my outgoing traffic !! Why? Did I miss something?

This will not work very well in internet, because most of all routers 
ignore TOS settings.

This is only useful in your own LAN or WAN were you have control over 
your routers
and configure them to respect the TOS settings.

For outgoing traffic shaping you should use the common tc functions of 
linux.

Cheers,
Andreas
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