combining network interfaces

[Frederique Rijsdijk]

Lowell Gilbert wrote:
> Jacques Manukyan <mlfreebsd at streamingedge.com> writes:
>> Frederique Rijsdijk wrote:
>>> Hello,
>>>
>>> Is there a way in FreeBSD to combine a number of network interfaces to
>>> one virtual interface on which I can tcpdump all the traffic of those
>>> interfaces at once?
>>>   
>> You're talking about bridging. Look at
>> http://www.freebsd.org/doc/en/books/handbook/network-bridging.html
>>
>> Section 31.5.7.1 is what you're asking for.
> 
> I don't think he wants to forward the traffic between those interfaces,
> though; just dump them all together.  I'm not sure, though.
> 

You're right.

> If I'm right, I don't think tcpdump can do that directly.  One idea
> might be to run a firewall to choose the packets and to forward a copy
> to a dummy interface that can be monitored.
 >

It might be an idea. Somehow I think it should be possible in a more 
simple way. Now reading 'man 4 lagg'...



-- Frederique