O
> >>>>I wanted to insert artificial packet loss based on a percent so i found:
> >>>>network emulab qdisc could do it, so i compiled support into the kernel
> >>>>and tried:
> >>>>tc qdisc change dev eth0 root netem loss .1%
> >>>>
> >>>>
> > ^^^^^^
> >
> >You need to do add not change. Add will set the queue discipline
> >to netem (default is pfifo_fast). Change is for changing netem parameters
> >after it is loaded.
> >
> >
> >
> bahhh I see... the wiki has "change" instead of add. Now i'm running
> into another problem, I have an XCP qdisc that I have already added via:
> tc qdisc add dev ath0 root xcp capacity 54Mbit size 500
>
Wiki reads as a set of examples. First uses, "add" after that "change".
> therefore when I also try to incorperate loss:
> tcq disc add dev ath0 root netem loss .1%
>
> I get:
> RTNETLINK answers: File exists
>
> Is it possible to use two qdiscs on the same interface?
>
No, but netem is "classful" so you can put xcp inside netem.
Look at the token bucket example on the wiki.
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