Re: Problem to priorize SSH traffic

[Ludovic Leroy <ludleroy59@free.fr>]

Andy,

ip + 14? How do you get this result?

Thank you.

Ludovic

Le 17/12/2016 11:56, Andy Furniss a écrit :
> Alan Goodman wrote:
>> Hi,
>>
>> The obvious issue at present is that your upload rate isnt hitting
>> the ceiling rate you have specified, or at least the rate estimator
>> doesnt think it is.  This could be because you've set your upload
>> incorrectly (what is your sync speed) or could be because you are not
>> accounting for the overheads and ATM characteristics in your
>> connection (makes the rate estimator inaccurate).
>>
>> You should try adding stab overhead 40 linklayer atm to your root
>> qdisc.
>>
>> The overhead 40 bit will be whatever number
>> https://github.com/moeller0/ATM_overhead_detector figures out for
>> you.
>
> Just in case that just reveals the fixed overhead on IP, on eth tc sees
> ip + 14 already, so you can subtract 14, which for ipoa or pppoa vcmux
> means you should use a negative overhead.