bridge and tcpdump

i have a problem with a bridge

i can create a bridge, and it work fine
i have a bridge with 3 pc and they can ping any other

but when i run 'tcpdump -n' in for example pc1 and do ping from pc2 to pc3
tcpdump don't capture anithing

why?

sorry for my bad english

--
Riccardo (http://termitano.myminicity.com, visitate e se volete partecipate
sul http://www.iltermitano.it/)

A computer is like an air conditioner,
it stops working when you open Windows.
Registered Linux user #457776

On Sep 17, 8:50*am, RicK_Murphy
<rmarfisiDA_QUI_NO_SPAM_LEVA_TOGLI_TUTTO_QUELLO@IN _MAIUSCOLO_A_QUIinwind.it>
wrote:
> i have a problem with a bridge
>
> i can create a bridge, and it work fine
> i have a bridge with 3 pc and they can ping any other
>
> but when i run 'tcpdump -n' in for example pc1 and do ping from pc2 to pc3
> tcpdump don't capture anithing
>
> why?

Because the bridge knew that the packet didn't have to go that way.

DS

RicK_Murphy wrote:


> but when i run 'tcpdump -n' in for example pc1 and do ping from pc2 to pc3
> tcpdump don't capture anithing

when, whit my linux I do this one:

brctl setageing <nomebridge> 0

I obtain a bridge, it works lika a hub and not like a switch

--
Riccardo (http://termitano.myminicity.com, visitate e se volete partecipate
sul http://www.iltermitano.it/)

A computer is like an air conditioner,
it stops working when you open Windows.
Registered Linux user #457776