[plug] VLAN support (trunking)

[Tony Breeds]

On Thu, Oct 30, 2003 at 09:09:25PM +0800, Bernard Blackham wrote:
> On Thu, Oct 30, 2003 at 08:42:53PM +0800, Tony Breeds wrote:
> > The nice thing is your card itself doesn't need to support VLANs any old
> > NIC will work.
> 
> Well, nearly. In my experience, a lot of cards don't account for the
> fact a VLAN tagged packet is 4 bytes larger, so packets start
> getting awfully fragmented and suddenly you're transferring 4kb/s
> over 100Mbit ethernet.

Ahh yes I forgot about that.
 
> One card that definitely deals with this transparently for you is
> the Intel EtherExpress PRO's. (Some tulips claim to, but none that
> I've ever tried). There are probably others too, but I can't say
> much about them.
 
> Or have I missed some vital command all my life that resolves this
> for other cards? :)

Nup many drivers have external patches that resovle the issue BUT the
rule from Ben (the 802.1q maintainer) is use Intel or 3Com in that
order.

Yours Tony

        Linux.Conf.AU       http://conf.linux.org.au/
        Jan 12-17 2004      The Australian Linux Technical Conference!
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