[Netkit.users] Netem on netkit

[Massimo Rimondini]

Dear Giovambattista,

try using the same command but replacing the tc executable with "orig-tc".
Netem is actually compiled in the current Netkit kernel. You can check
it in the configuration file available online
(http://wiki.netkit.org/download/netkit-kernel/netkit-kernel-config-i386-K2.8)
or inside a virtual machine:

> pc1:~# zgrep NETEM /proc/config.gz
> CONFIG_NET_SCH_NETEM=y

However, there seem to be problems with some iproute commands that are
imported from the MPLS Linux project. That is why we also provide their
original releases from Debian packages, with their name prefixed by "orig-".

Hope this helps.

Regards,
Massimo.


Giovambattista Ianni wrote:
> Dear all,
>
> I had in mind to do some delay+packet loss simulation using netkit, so I started 
> issuing some netem command in virtual machines, like:
>
> tc qdisc add dev eth0 root netem delay 100ms
>
> but, what I get is:
>
> Unknown qdisc "netem", hence option "delay" is unparsable
>
> Apparently netem is not compiled in the netkit kernel: I'm using a freshly 
> downloaded netkit copy with a "2.6.26.5-netkit-K2.8 (max a brunello) (gcc version 
> 4.3.3 (Debian 4.3.3-13)" kernel on it.
>
> Massimo reports that netem should be available in netkit:
> http://list.dia.uniroma3.it/pipermail/netkit.users/2008-May/000353.html
>
> but there is something wrong: is netem actually in? is there a way to enable it?
> should I modprobe some additional module? has netem perhaps a different qdisc 
> name? (it was 'delay' in old kernels but this doesn't work)
>
> regards, gb
>
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