[FUG-BR] vlan sobre bridge

[renato martins]

voce já tentou com lag ?

2009/3/12 Luiz Gustavo S. Costa <luizgustavo em luizgustavo.pro.br>

> Salve lista,
>
> Eu estou tentando implementar uma bridge para redundância de interface
> (usando spanning tree) só que estou esbarrando na barreira de
> implementar vlan sobre bridge.
>
> ao tentar fazer testes, tive o seguinte diagnostico:
>
> # ifconfig bridge0 create
> # ifconfig bridge0 addm le1 addm le2 (usei bridge normal por causa que
> é um teste)
> # ifconfig brigde0 up
> # ifconfig vlan10 create
> # ifconfig vlan10 vlan 10 vlandev bridge0
> ifconfig: SIOCSETVLAN: Protocol not supported
>
> Então é isso mesmo ? bridge não suporta vlan :( ....
>
> Eu encontrei isso no man do bridge (# man bridge):
>
> The packets destined to the bridging host will be seen by the filter on
>     the interface with the MAC address equal to the packet's destination
> MAC.
>     There are situations when some of the bridge members are sharing the
> same
>     MAC address (for example the vlan(4) interfaces: they are currenly
> shar-
>     ing the MAC address of the parent physical interface).  It is not
> possi-
>     ble to distinguish between these interfaces using their MAC address,
>     excluding the case when the packet's destination MAC address is equal
> to
>     the MAC address of the interface on which the packet was entered to the
>     system.  In this case the filter will see the incoming packet on this
>     interface.  In all other cases the interface seen by the packet filter
> is
>     chosen from the list of bridge members with the same MAC address and
> the
>     result strongly depends on the member addition sequence and the actual
>     implementation of if_bridge.  It is not recommended to rely on the
> order
>     chosen by the current if_bridge implementation: it can be changed in
> the
>     future.
>
> Mas e no caso de usar stp (spanning tree) não cairia nesse caso, pois
> somente uma interface estaria em uso....
>
> Eu encontrei esse site:
> http://blogs.freebsdish.org/thompsa/2007/06/14/bridging-a-vlan-trunk/
>
> mas não tive muito avanço até agora....
>
> estou pensando em usar a interface lagg0 para solucionar isso (nos
> testes funcionou com vlan) no modo failover.
>
> O que acham ????
>
> Obrigado.
>
> --
> Luiz Gustavo Costa
>
> mundoUnix - Consultoria em Software Livre
> http://www.mundounix.com.br
> ICQ: 2890831 / MSN: gustavo.bsd em gmail.com
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