Linux Ethernet Bridging - Sep 2012 - [Bridge] Questions about MSTP support.

Hi all.

I need to use STP (ideally MST) on centos 6.3. I've read that it's
supported
in linux kernel as part of IEEE 802.1Q standard, but can't find any 
information on configuring miltiple spanning trees.
So - help? suggestions? rtfm (as long as you point me to actual manual)? 
anything?

Thank you,
- V

On Thursday 27 September 2012 16:32:21 v g wrote:
> Hi all.
>
> I need to use STP (ideally MST) on centos 6.3. I've read that it's
> supported in linux kernel as part of IEEE 802.1Q standard,
Kernel has no support for the MSTP. It only implements 802.1d-1998 plain old 
STP.
> but can't find any information on configuring miltiple spanning trees.
> So - help? suggestions? rtfm (as long as you point me to actual manual)?
> anything?
>
Take a look at open-source MSTP user-space demon here: 
http://sourceforge.net/p/mstpd/wiki/Home/
You can use it to get 802.1Q-2005 compatible RSTP/STP support with the 
standard kernel. Although It is still in alpha stage, I have a couple of 
reports about successfull RSTP implementations using it.

As for MST - you need extra MSTP-aware hardware + specialized driver for that 
hardware. Alternatively you could modify the bridge subsystem code in kernel. 
In current state without modifications it has no support for the per-MST port 
states.

-- 
With Best Regards,
Vitalii Demianets