em driver + VLAN's

Dave Raven dave at raven.za.net
Wed Jan 18 07:06:07 PST 2006

FreeBSD 4.9 - char em_driver_version[] = "1.7.16";

I've tried multiple bridge configurations - from bridging just em0,em1 to
bridging two vlan's attached to each card. Unfortunately I don't have access
to the box at the moment - if its still necessary I will fetch the
information tomorrow (ifconfig etc) 

To sum up its something like the following

Or vlan0,vlan1 with:
	ifconfig vlan0 create
	ifconfig vlan1 create
	ifconfig vlan0 vlan 100 vlandev em0
	ifconfig vlan1 vlan 100 vlandev em1

If I change to using fxp it immediately works..

Thanks for the help

-----Original Message-----
From: Gleb Smirnoff [mailto:glebius at FreeBSD.org] 
Sent: 18 January 2006 04:59 PM
To: Dave Raven
Cc: freebsd-net at FreeBSD.org
Subject: Re: em driver + VLAN's

On Wed, Jan 18, 2006 at 03:12:27PM +0200, Dave Raven wrote:
D> Hi all,
D> 	I'm having an interesting problem at the moment. I want to bridge 
D> between two cisco switches on trunk ports. Basically bridging vlans - 
D> if I bridge my two main interfaces it works fine if they are fxp, but 
D> not when I use em cards...
D> Could this be related to the driver, or BSD in some way?

This probably can. What FreeBSD version are you using? Can you please show
ifconfig output and bridge configuration?

Totus tuus, Glebius.

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