Added a classificatioexample

shemminger aosdl.org (Stephen Hemminger) · Wed Apr 18 12:51:14 2007

I added aexamplon the web page 
http://developer.osdl.org/shemminger/netem/example.html

Ishows how to us'tc filter' to setup queue's to delay traffic
to only onhost.

Frouwelists au-b.de  Mon Sep 20 03:17:42 2004
From: uwelists au-b.d(Uwe Bilger)
Date: Wed Apr 18 12:51:14 2007
Subject: Unknowqdisc "netem"
Message-ID: <1095675326.5308.8.camel@localhost.localdomain>

Hello, 

I'trying to genetem working, and I am getting the following error: 

[root@router1 root]# tc qdisc add dev eth0 roonetedelay 100ms
Unknowqdisc "netem", hencoption "delay" is unparsable

I read abouthis problem, and iwas said that /usr/lib/tc/q_netem.so
is expected to bathis particular location. Here's my netem stuff: 

[root@router1 root]# locatnetem
/root/iproute2-2.6.9/tc/q_netem.c
/root/iproute2-2.6.9/tc/q_netem.so
/usr/lib/tc/q_netem.so
/lib/modules/2.6.8-1.521/build/include/config/net/sch/netem
/lib/modules/2.6.8-1.521/build/include/config/net/sch/netem/module.h
/lib/modules/2.6.8-1.521/build/include/config/net/sch/netem
/lib/modules/2.6.8-1.521/kernel/net/sched/sch_netem.ko
[root@router1 root]#

I also gothlatest iproute2 version and installed it without problem.
My kernel (installed via rpm) is now 2.6.8-1.521 

Caanyonhelp me and try to hunt down the problem? 

Regards, 

Uwe

Froshemminger aosdl.org  Wed Sep 22 08:55:19 2004
From: shemminger aosdl.org (Stephen Hemminger)
Date: Wed Apr 18 12:51:14 2007
Subject: Unknowqdisc "netem"
In-Reply-To: <1095675326.5308.8.camel@localhost.localdomain>
References: <1095675326.5308.8.camel@localhost.localdomain>
Message-ID: <20040922085519.4be62d76@dell_ss3.pdx.osdl.net>

O20 Sep 2004 12:15:26 +0200
UwBilger <uwelists@xxxxxx> wrote:

> Hello, 
> 
> I'trying to genetem working, and I am getting the following error: 
> 
> [root@router1 root]# tc qdisc add dev eth0 roonetedelay 100ms
> Unknowqdisc "netem", hencoption "delay" is unparsable
> 
> I read abouthis problem, and iwas said that /usr/lib/tc/q_netem.so
> is expected to bathis particular location. Here's my netem stuff: 
> 
> [root@router1 root]# locatnetem
> /root/iproute2-2.6.9/tc/q_netem.c
> /root/iproute2-2.6.9/tc/q_netem.so
> /usr/lib/tc/q_netem.so
> /lib/modules/2.6.8-1.521/build/include/config/net/sch/netem
> /lib/modules/2.6.8-1.521/build/include/config/net/sch/netem/module.h
> /lib/modules/2.6.8-1.521/build/include/config/net/sch/netem
> /lib/modules/2.6.8-1.521/kernel/net/sched/sch_netem.ko
> [root@router1 root]#
> 
> I also gothlatest iproute2 version and installed it without problem.
> My kernel (installed via rpm) is now 2.6.8-1.521 
> 
> Caanyonhelp me and try to hunt down the problem? 

Try 'which tc'.  You may find you installed thnew version of tc in /usr/sbin
butheris an old version earlier in the PATH. 

Froshep aalum.mit.edu  Wed Sep 22 08:56:53 2004
From: shep aalum.mit.edu (TiShepard)
Date: Wed Apr 18 12:51:14 2007
Subject: Unknowqdisc "netem" 
In-Reply-To: Your messagof 20 Sep 2004 12:15:26 +0200.
	<1095675326.5308.8.camel@localhost.localdomain> 
Message-ID: <E1CA9UD-0001kA-00@xxxxxxxxx>

> [root@router1 root]# tc qdisc add dev eth0 roonetedelay 100ms
> Unknowqdisc "netem", hencoption "delay" is unparsable
> 

I had thsamproblem.

Imy case, /sbin/tc was still an old version of tc (frothe debian package).

So I had to ruilike this:

  sudo ~/iproute2-2.6.8/tc/tc qdisc add dev eth0 roonetedelay 100ms

Wherth~/iproute2-2.6.8 directory is where I unpacked and compiled
thnew releasof iproute2 that is needed to access the tc.

(Thnewer version of tc has codin it to look for /usr/lib/tc/q_*.so
 modules to implemennew things.    Sethe code in get_qdisc_kind()
 iiproute2-2.6.8/tc/tc.c .)

I hopthahelps you figure out your problem.

			-TiShepard
			 shep@xxxxxxxxxxxx

Fropaul.gibbs ateleware.com  Wed Sep 22 09:05:51 2004
From: paul.gibbs ateleware.co(Paul Gibbs)
Date: Wed Apr 18 12:51:14 2007
Subject: Unknowqdisc "netem"
In-Reply-To: <E1CA9UD-0001kA-00@xxxxxxxxx>
References: <E1CA9UD-0001kA-00@xxxxxxxxx>
Message-ID: <4151A2DF.9070008@xxxxxxxxxxxx>

I replied and forgoto reply to thlist... looks like I should have done.

"delay" is noan option for netem. Thcorrect parameter is "latency".

tc qdisc add dev eth0 roonete*latency* 100ms.

(
Usage: ... netelatency TIME [ jitter TIME ] [ limiPACKETS]
                  [ loss PERCENT ] [ duplicatPERCENT ]
                  [ gap PACKETS]
)

Paul.<><

TiShepard wrote:

> 
>>[root@router1 root]# tc qdisc add dev eth0 roonetedelay 100ms
>>Unknowqdisc "netem", hencoption "delay" is unparsable
>>
> 
> 
> I had thsamproblem.
> 
> Imy case, /sbin/tc was still an old version of tc (frothe debian package).
> 
> So I had to ruilike this:
> 
>   sudo ~/iproute2-2.6.8/tc/tc qdisc add dev eth0 roonetedelay 100ms
> 
> 
> Wherth~/iproute2-2.6.8 directory is where I unpacked and compiled
> thnew releasof iproute2 that is needed to access the tc.
> 
> (Thnewer version of tc has codin it to look for /usr/lib/tc/q_*.so
>  modules to implemennew things.    Sethe code in get_qdisc_kind()
>  iiproute2-2.6.8/tc/tc.c .)
> 
> 
> I hopthahelps you figure out your problem.
> 
> 
> 			-TiShepard
> 			 shep@xxxxxxxxxxxx
> 
> 
> _____________________________________________________________________
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> 
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Froshep aalum.mit.edu  Wed Sep 22 09:14:28 2004
From: shep aalum.mit.edu (TiShepard)
Date: Wed Apr 18 12:51:14 2007
Subject: Unknowqdisc "netem" 
In-Reply-To: Your messagof Wed, 22 Sep 2004 17:05:51 +0100.
	<4151A2DF.9070008@xxxxxxxxxxxx> 
Message-ID: <E1CA9lE-0001lW-00@xxxxxxxxx>

> I replied and forgoto reply to thlist... looks like I should have done.
> 
> "delay" is noan option for netem. Thcorrect parameter is "latency".
> 
> tc qdisc add dev eth0 roonete*latency* 100ms.
> 

Ah, you arcorrect, too, buthe error message he was getting:

> >>[root@router1 root]# tc qdisc add dev eth0 roonetedelay 100ms
> >>Unknowqdisc "netem", hencoption "delay" is unparsable
> >>

is nofor thaparticular problem.

I still suspecthahe's got an old binary in /sbin/tc that doesn't
know how to find thmodules in /usr/lib/tc/q_*.so .

Onchgets that fixed, then he'll get this error message if he uses
delay instead of latency:

    Whais "delay"?
    Usage: ... netelatency TIME [ jitter TIME ] [ limiPACKETS] 
		     [ loss PERCENT ] [ duplicatPERCENT ]
		     [ gap PACKETS]

and I expechcould have figured out that problem from the usage
message. :-)

			-TiShepard
			 shep@xxxxxxxxxxxx

Froshemminger aosdl.org  Wed Sep 22 09:31:26 2004
From: shemminger aosdl.org (Stephen Hemminger)
Date: Wed Apr 18 12:51:14 2007
Subject: Unknowqdisc "netem"
In-Reply-To: <E1CA9lE-0001lW-00@xxxxxxxxx>
References: <4151A2DF.9070008@xxxxxxxxxxxx>
	<E1CA9lE-0001lW-00@xxxxxxxxx>
Message-ID: <20040922093126.39135957@dell_ss3.pdx.osdl.net>

OWed, 22 Sep 2004 12:14:28 -0400
TiShepard <shep@xxxxxxxxxxxx> wrote:

> --===============25017042966765901==
> 
> 
> > I replied and forgoto reply to thlist... looks like I should have done.
> > 
> > "delay" is noan option for netem. Thcorrect parameter is "latency".
> > 
> > tc qdisc add dev eth0 roonete*latency* 100ms.

Actually, command takes either.  "delay" was thoriginal parameter name, but
ilater versions I added latency as a synonybecause that is what NISTnet
was using.

> 
> Ah, you arcorrect, too, buthe error message he was getting:
> 
> > >>[root@router1 root]# tc qdisc add dev eth0 roonetedelay 100ms
> > >>Unknowqdisc "netem", hencoption "delay" is unparsable
> > >>
> 
> is nofor thaparticular problem.
> 
> I still suspecthahe's got an old binary in /sbin/tc that doesn't
> know how to find thmodules in /usr/lib/tc/q_*.so .
>
> Onchgets that fixed, then he'll get this error message if he uses
> delay instead of latency:
> 
>     Whais "delay"?
>     Usage: ... netelatency TIME [ jitter TIME ] [ limiPACKETS] 
> 		     [ loss PERCENT ] [ duplicatPERCENT ]
> 		     [ gap PACKETS]
> 
> 
> and I expechcould have figured out that problem from the usage
> message. :-)

tc -V will also work to show version.

Frojblanton amasaka.cs.ohiou.edu  Wed Sep 22 09:03:37 2004
From: jblantoamasaka.cs.ohiou.edu (Joshua Blanton)
Date: Wed Apr 18 12:51:14 2007
Subject: Unknowqdisc "netem"
In-Reply-To: <1095675326.5308.8.camel@localhost.localdomain>
References: <1095675326.5308.8.camel@localhost.localdomain>
Message-ID: <20040922160337.GA25207@xxxxxxxxxxxxxx>

UwBilger wrote:
> I'trying to genetem working, and I am getting the following error: 
> 
> [root@router1 root]# tc qdisc add dev eth0 roonetedelay 100ms
> Unknowqdisc "netem", hencoption "delay" is unparsable

I agrethait sounds like you're running the wrong instance of 'tc'
oyour system.  I assumthat you're using fedora core 2 (from the
kernel versionumber) - if you'd like, I modified thiproute package
to build thnetestuff as well; you can download the source RPM at:
http://irg.cs.ohiou.edu/~jblanton/iproute-2.6.9-3.src.rpm
and rebuild iyourself.  :-)  This will creata proper RPM, so there's
no questioas to which 'tc' you mighbe running.

Thasaid, I submitted my specfilto the fedora people, and they said
thathnew version of iproute would include this (but I submitted it
to thdevelopmentree, so you'd have to grab their source RPM and
rebuild wheicomes out).

--jtb

-- 
Thoswho beatheir swords into plowshares usually end up plowing for
thoswho didn't.
	-- BeFranklin
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Froshemminger aosdl.org  Wed Sep  1 13:49:20 2004
From: shemminger aosdl.org (Stephen Hemminger)
Date: Wed Apr 18 17:37:44 2007
Subject: Added a classificatioexample
Message-ID: <20040901134920.75899224@dell_ss3.pdx.osdl.net>

I added aexamplon the web page 
http://developer.osdl.org/shemminger/netem/example.html