[c-nsp] Fwd: Re: QinQ

[Rolf Mendelsohn]

Hi Steinar,

Is Spanning tree (specifcally MSTP) work over QinQ links - i.e. a topology 
like below:

i.e. STP for the Provider backbone (not for the Customer 802.1q tags).

i.e. the following is not protected by STP?? (MSTP in my case):

SW   - w 802.1q VLAN (2950/2400ME)
CSW - Core Switch with QinQ trunks (3550 w EMI / 3560)

                  /---------------------\
SW----CSW1|                     | CSW2----SW
                  \---------------------/

Regards,
/rolf

On Thursday 26 October 2006 21:27, sthaug at nethelp.no wrote:
> > Sorry I guess I have a number of vague assumptions / idea's below which
> > aren't clear questions :>).
> >
> > Could somebody have a look and let me know based on their experience with
> > QinQ?
>
> Your questions are indeed not clear.
>
> We use lots of dual tagging and lots of Martini tunnels. Switches are
> mostly Cisco and Extreme, but the routers are Juniper M series. We do
> *not* use regular STP (but we use Extreme EAPS in ring based switch
> structures). It works well for our purposes.
>
> Steinar Haug, Nethelp consulting, sthaug at nethelp.no