[Olsr-users] olsrd test-bed

[Liam J. Foy]

Henning Rogge wrote:
> Am Montag 01 Juni 2009 10:10:34 schrieb Liam J. Foy:
>> Hello folks,
>>
>> We're looking at trying to create a test-bed using olsrd on four virtual
>> machines (using OpenVZ). However, documentation is hard to find. Could
>> someone point us to some good documentation? Any heads up when using
>> OpenVZ? If anyone has experience with this kind of setup we would be
>> happy to hear from you.
> 
> you will find all information about OpenVZ on their webpage:
> http://wiki.openvz.org/Main_Page
> 
> With OpenVZ (or other virtual machines like KVM, XEN, VMWare) each VM will 
> install one or several pseudo-ethernet devices on your host-machine, that 
> connect to the interface inside the VM.
> 
> "All" you have to do is to connect them.
> 
> The easiest way is to use a linux network "bridge" to connect them and use 
> ebtables to control which VM can hear a specific VM. This way you can only 
> emulate perfect links.
> 

Yeah. I have tried this but I get:

deb-olsrd1:/# brctl addbr br0
add bridge failed: Operation not permitted

so its some OpenVZ issue. *sigh*.

> Theoretically you could use the tc (traffic control) command of linux and the 
> "netem" (network emulator) inside the kernel to emulate packet loss and delay 
> on a link. If you get this running please contact me, I would like to use tc 
> too.

I'll let you know if I do :)

> 
> Another method to connect the VMs would be using a userspace tool to connect 
> the virtual ethernet ports. You will find a small tool for static networks in 
> the contrib directory of the OLSR repository. Another option might be the MANE 
> emulation software of the NRL (http://cs.itd.nrl.navy.mil/work/mane/index.php) 
> or similar network emulation software.
> 
> Henning
> 
> 

Thanks, Liam.