[LARTC] Re: RED to use ECN (or work at all?)

[Christian Benvenuti <christian.benvenuti@libero.it>]

Hi Daniel,

>Dear Community,
>
>sorry for the somewhat dumb question.  Maybe someone has any pointer  
>to how to setup the RED queue to mark pakets with ECN. In particular  
>what are appropriate parameter settings for limit, min, max, etc.
>
>All my trials end up with either "RTNETLINK answers: Invalid  
>argument", although the command line (at least for me) looks fine in  
>regard to what is said on the man page.
>
>"tc qdisc replace dev lo red limit 10kb min 2kb max 8kb avpkt 1000  
>burst 12 ecn" being one such example.

You did not specify where to attach the qdisc:
(see the keyword "root")

tc qdisc replace dev lo root \
        red limit 10kb min 2kb max 8kb avpkt 1000 burst 12 ecn

>I am using kernel version 2.6.16.29 and the most recent iproute2  
>package.
>
>Thanks in advance,
>Daniel

Regards
/Christian
[ http://benve.info ]


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