[Bridge] Disable mac address learning

matan monitz mmonitz at gmail.com
Sun Nov 28 05:27:19 PST 2010


it works
i use it for transfering a port monitor via bridge
On Sun, Nov 28, 2010 at 12:21 AM, Benjamin Vanheuverzwijn <bvanheu at gmail.com
> wrote:

> Hi,
>
> Yes that's wat i thought but reading
> http://www.linuxfoundation.org/collaborate/workgroups/networking/bridge#Showing_devices_in_a_bridge tells
> me that if i set aging time to 0, it will makes all entry permanent.
>
> The aging time is the number of seconds a MAC address will be
>
> kept in the forwarding database after having received a packet
>
> from this MAC address.
>
> The entries in the forwarding database are periodically timed out
>
> to ensure they won't stay around forever.
>
> Normally there should be no need to modify this parameter,
>
> but it can be changed with (time is in seconds).
>
>
>> # brctl setageing bridgename time
>
>
>> Setting ageing time to zero makes all entries permanent.
>
>
> My bad i did not take time to test it.
>
> Thanks for your answer i will try this!
>
> On Sat, Nov 27, 2010 at 5:16 PM, Stephen Hemminger <
> shemminger at linux-foundation.org> wrote:
>
>> On Sat, 27 Nov 2010 16:46:34 -0500
>> Benjamin Vanheuverzwijn <bvanheu at gmail.com> wrote:
>>
>> > Hi,
>> >
>> > Is there a way to disable the mac address learning in linux using
>> "brctl" or
>> > custom code so any packet sent to the bridge will be flooded in each
>> > interfaces.
>> >
>> > I would like to do something similar as OpenBSD:
>> > $ brconfig <bridge> -learn <iface>
>> > $ man brconfig
>> > ...
>> >      -learn interface
>> >              Mark interface so that the source address of packets
>> received
>> >              from interface are not entered into the address cache.
>> > ...
>> >
>> > I tried to search on google and on the mailing-list without success.
>>
>> Just set ageing time to zero no need for special config option.
>>
>
>
>
> --
> Benjamin Vanheuverzwijn
>
> Google Talk/Jabber - bvanheu at gmail.com
> http://vanheu.ca
>
>
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>
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