vlan/bridge problems..

Julian Elischer julian at elischer.org
Sat May 13 00:54:25 UTC 2006


Evren Yurtesen wrote:

> Doug Ambrisko wrote:
>
>> Evren Yurtesen writes:
>> | I tried to bridge vlan with ethernet but I am having troubles.
>> | | net.link.ether.bridge_cfg: fxp0:2,fxp3:2,fxp2:3,vlan0:3
>> | net.link.ether.bridge: 1
>> | net.link.ether.bridge_ipfw: 0
>> | net.link.ether.bridge_ipf: 0
>> | net.link.ether.bridge_ipfw_drop: 0
>> | net.link.ether.bridge_ipfw_collisions: 0
>> | | fxp0 - fxp3 bridge works fine
>> | vlan0 is attached to fxp3 (trunk)
>> | | vlan0 - fxp2 bridge doesnt work! I can ping IP of fxp2 but not to 
>> any | host connected to fxp2.
>> | | Can this be because I am using fxp3 as a normal interface + a 
>> vlan trunk | at the same time?
>>
>> It wouldn't work for me since the if_vlan device call the device 
>> driver's output mechanism direct and the SW input path would ignore 
>> handling of VLAN
>> packets ... or atleast this used to be issues.  My machine's that I 
>> needed
>> this for are patched locally to make it work.
>>
>> I don't know the current state of this.  It gets to be a bit of
>> a mess re-injection the packet into the stack on output with loops etc.
>> The ordering of post netgraph/bridge has some issues.  It probably
>> should be tagged and use that to prevent loops.
>>
>> Doug A.
>
>
> Well, I think vlans do not bridge on 4.x


that may or may not be true.. I think I have seen it working..
I think netgraph bridging should work.

it may depend of whether you are doing hardware vlan tagging.

>
> Bridging works in 5.x/6.x but not the way that I explained here
>
> I cant bridge 1 interface and its vlan interface at the same time.
>
> Thanks,
> Evren
>
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