netdev - Re: [RFC PATCH bridge 0/5] Add basic VLAN support to bridges

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Message-ID: <20120824134410.75827e0d@nehalam.linuxnetplumber.net>
Date:	Fri, 24 Aug 2012 13:44:10 -0700
From:	Stephen Hemminger <shemminger@...tta.com>
To:	vyasevic@...hat.com
Cc:	Nicolas de Pesloüan 
	<nicolas.2p.debian@...il.com>, netdev@...r.kernel.org
Subject: Re: [RFC PATCH bridge 0/5] Add basic VLAN support to bridges

On Thu, 23 Aug 2012 22:52:02 -0400
Vlad Yasevich <vyasevic@...hat.com> wrote:

> On 08/23/2012 05:03 PM, Nicolas de Pesloüan wrote:
> > Le 23/08/2012 21:29, Vlad Yasevich a écrit :
> >> This series of patches provides an ability to add VLAN IDs to the bridge
> >> ports.  This is similar to what can be found in most switches.  The
> >> bridge
> >> port may have any number of VLANs added to it including vlan 0 for
> >> untagged
> >> traffic.  When vlans are added to the port, only traffic tagged with
> >> particular
> >> vlan will forwarded over this port.  Additionally, vlan ids are added
> >> to FDB
> >> entries and become part of the lookup.  This way we correctly identify
> >> the FDB
> >> entry.
> >>
> >> There are still pieces missing.  I don't yet support adding a static
> >> fdb entry
> >> with a particular vlan.  There is no netlink support for carrying a
> >> vlan id.
> >>
> >> I'd like to hear thoughts of whether this is usufull and something we
> >> should
> >> persue.
> >>
> >
> > Do you think this might allow for per VLAN spanning tree (having ports
> > in forwarding state or blocking state depending on the VLAN) in the future?
> >
> >      Nicolas.
> 
> sure, why not.

The vlan map table would be helpful, but the Spanning Tree implementation
doesn't have a clue about what it means.
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