FREEBSD between two trunks

[Nickolay Kritsky]

There was an old funny thing about bridging vlans: if you bridge vlanXX
interfaces without bridging parents - do not forget to put parent in up
and promiscuous mode. For 4.6 kernel it also required some patching.
What version are you running?

Nick

-----Original Message-----
From: John-Mark Gurney [mailto:gurney_j at resnet.uoregon.edu] 
Sent: Saturday, June 04, 2005 10:15 PM
To: sferreira at comcast.net
Cc: freebsd-ipfw at freebsd.org; freebsd-net at freebsd.org
Subject: Re: FREEBSD between two trunks

sferreira at comcast.net wrote this message on Fri, Jun 03, 2005 at 20:44
+0000:
> I'm trying to setup DUMMYNET to emulate long delays, such as those
encountered in satellite links. The problem is that I have to place my
freebsd host between two trunks passing vlans (2,3,4,5,6).
> 
> So the setup is:
> 
> cisco swictch trunks vlan 2,3,4,5,6 <-> freebsd <--> cisco switch
trunks vlan 2,3,4,5,6
> 
> 
> All the documents I could find  related to this subject matter has the
freebsd as an endpoint and not connecting two trunks.  Also the freebsd
has to be an invisible hop on the network, so it can not route this
traffic.  I had setup my freebsd in bridge mode but I could not get this
setup to work.

You may need to increase your mtu to allow the full sized packets to
pass
through...  or you could setup a vlan w/ and id that isn't used and let
that
adjust the mtu for you..

-- 
  John-Mark Gurney				Voice: +1 415 225 5579

     "All that I will do, has been done, All that I have, has not."
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