Re: VPLS model for L2VPN Framework document

> I thought the framework model was that the PE contain a single Bridge. 
> Certainly, if it contains multiple Bridges, it is impossible to run
> an MSTP instance among the Bridges. However, why multiple Bridges are 
> needed in a single PE? If it is single, I think there is no problem. 

I didn't  have the MSTP stuff  clear in my mind  when I wrote  up the model,
which is why the text is subject to different interpretations.

The  way the  framework document  is written,  it seems  to suggest  that an
"emulated LAN"  is the as a "VPLS  instance", which in turn  suggests that a
single  MSTP instance  cannot govern  multiple  VPLS instances.   So I  just
wanted to  make it clearer that  an emulated LAN  could consist of a  set of
VPLS instances plus  an MSTP instance; I think this  would remove Mick's and
Norm's objection.  

But I  didn't want to  require that  if there is  an MSTP instance,  it must
govern all the VPLS instances; this  seems to me to be a deployment decision
which need not be mandated by the framework.