Messages in this thread | | | Date | Mon, 17 Apr 2006 13:05:21 -0400 | From | George Nychis <> | Subject | Re: want to randomly drop packets based on percent |
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Stephen Hemminger wrote:
>On Mon, 17 Apr 2006 18:30:51 -0400 >George Nychis <gnychis@cmu.edu> wrote: > > > >>Stephen Hemminger wrote: >> >> >> >>>On Mon, 17 Apr 2006 03:38:33 -0400 >>>George Nychis <gnychis@cmu.edu> wrote: >>> >>> >>> >>> >>> >>>>Hey, >>>> >>>>I'm using the 2.4.32 kernel with madwifi and iproute2 version >>>>2-2.6.16-060323.tar.gz >>>> >>>>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
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?
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