Linux Bridging of Tagged-VLAN (802.1q) Ethernet Traffic

[shimi]

On Mon, Jan 24, 2011 at 11:26 PM, Oron Peled <oron at actcom.co.il> wrote:
> On Monday, 24 בJanuary 2011 21:47:20 shimi wrote:
>> I'm trying to run a Linux Bridge in order to manipulate traffic
>> running between trunk ports on two switches.
>>
>> The ports on both ends pass all their traffic with VLAN tagging to
>> both ends (i.e. both switches has the port set to 802.1q/trunk, and
>> the traffic flow between the switches encapsulates many subnets on
>> different VLANs)
>
> Short googling turned out the following related links:
>  - [LARTC] linux bridging vlans?
>       http://mailman.ds9a.nl/pipermail/lartc/2006q1/018537.html
>  - 802.1Q VLAN Tagging and Untagging on Linux?
>       http://www.linuxsa.org.au/pipermail/linuxsa/2006-July/084589.html
>
> The point mentioned is that you should vconfig the *physical* interfaces
> and then bridge the result. The reason given for this is that it is more
> flexible (although more complex) -- e.g: you can bridge a physical
> non-vlan capable interface to a specific vlan.
>
> I didn't test any of this personally...
>

Thanks, but, quoting my original message:

I also tried intercepting VLAN traffic by creating VLANs on the
physical interfaces with vconfig, then adding them to the br0 and also
tried setting them up in promisc mode. This also didn't seem to have
any effect.

Any other idea?

-- Shimi