Fwd: [LARTC] tc and multiple ip on a device

[Vincent Dautremont]

well, it's kind of odd
the default gateway of my PC1 to 5 is configured as PC6.
that way, i can only begin a file transfert from PC1 to PC7 if PC6 is  
up and running.
now, i made a large upload from PC1 to PC7 with scp, turned off PC6  
during the file transfert, and the scp file transfer continue while  
PC6 is halted.

so it's finally not a tc problem, but is this normal ? i find it  
weird. should i revise my TCP/IP basics? it seams like PC6 was used  
only for the startup of the the TCP session of scp and that every  
packet dring file transfert is ging directly from PC1 to PC7 !!!!

perhaps it's a virtualisation issue that i don't get afterall.

Vincent.

Début du message réexpédié :

> De : Vincent Dautremont <vdautrem at ulb.ac.be>
> Date : 12 août 2007 01:51:52 GMT+02:00
> À : lartc at mailman.ds9a.nl
> Objet : [LARTC] tc and multiple ip on a device
>
> Hi,
> i'm sort of testing a configuration and things are not working sa i  
> planned.
>
> i have the following network diagram: PC1 to 7 cnneced on the same  
> ethernet hub.
>
> PC1  PC2 PC 3 PC4 PC5 PC6 on network 192.168.5.0
> PC6 and PC7 on network 192.168.1.0
>
> so PC6 work as a router. in addition, PC6 is connected to both  
> network on the same device eth0.
>
>
> now on PC6, put a tbf on dev eth0 root with a rate 100ko/s
>
> send data from PC1 to PC7.  is the data shaped by the tbf ? i'd say  
> yes but it does not !!!
> can someone explain me how ? is that normal ? would that happen too  
> if PC6 was connected to both network with different devices ?
>
> I did this test in virtualisation with these 7 machines on my  
> macbookpro because i don't have the necessary hardware.
> i think it doesn't change the initial problem but i'm ot 100% sure.
>
> Thanks.
> Vincent
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