vlan/bridge problems..

Doug Ambrisko ambrisko at ambrisko.com
Sat May 13 02:52:29 UTC 2006


Julian Elischer writes:
| 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.
| >
| > 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.

Only if doing netgraph vlan.  Not if_vlan.
 
| it may depend of whether you are doing hardware vlan tagging.

I disable HW vlan support.

Doug A.


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