Network Traffic Generation

[Shachar Shemesh]

Oleg Goldshmidt wrote:

>
>
> Let me first make a disclaimer that I have not tried it myself in this
> configuration, but here is what *might* point you towards a
> solution. It may also turn out a dead end, mind you.
>   
I'm sorry, my money is on the later.
>
> http://www.clintoneast.com/articles/multihomed.php
> http://lartc.org/howto/lartc.rpdb.multiple-links.html
> http://linux-ip.net/html/adv-multi-internet.html
> http://kindlund.wordpress.com/2007/11/19/configuring-multiple-default-routes-in-linux/
>
>   
None of those links say anything about causing a packets destined for a 
LOCAL ip to actually go out. I'd love to be proven wrong as, as I've 
said, I need a similar thing myself.
> Once again, I am not saying it is a solution for you problem, just
> something that might help you work it out, if it is at all possible.
>
>   
It is, indeed, worth a try.
>> The most immediate solution is to run a virtual machine, and give it
>> exclusive access to one of the NICs. This way you can configure, for
>> example, the 100 address in the real machine and the 101 address in
>> the virtual one.
>>     
>
> But this does not necessarily mean packets will go out of the machine
> - hypervisors include local (in-box) switching nowadays.
>
>   
Switching is fine, as long as they are only layer 2 aware. So long as 
you actually have two actual physical network cards, there is no reason 
for the packet not to go out. A layer 3 switch might notice the short 
path, but a layer 2 switch should work fine.

Shachar


-- 
Shachar Shemesh
Lingnu Open Source Consulting Ltd.
http://www.lingnu.com

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