Re: VPLS model for L2VPN Framework document

Ali,

> With respect to IEEE, the proper model is single bridge in a PE; however, 
> if Ethernet access network is not used or IEEE control protocols is not 
> used in the MPLS/IP access network, then one can use multiple bridges model 
> where each bridge is simple 1980-style bridge (e.g., VSI). Although the 
> later model is not recommended because of its restrictions.

I'm not sure relation ship between the above and MSTP issue in the 
framework model.

If a Bridged LAN consists of 1980-style bridges that don't support xSTP,
it is logically equivalent a LAN segment from a viewpoint of Bridges that
support xSTP, so I think there is no xSTP related issue.

I still don't understand the issue in the framework model. I'm still 
waiting answers to the following questions as I posted over two weeks ago.

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(1) Could you clarify what the mistake is in the Eric's model, and
and how your model resolved it? 

(2) Could you clarify what the right part from "A" means? I my understanding
it must be a MAC entity or a part of a MAC relay entity that distributed PEs.

(3) Could you clarify why the above model is consistent with the following 
Mick's interpretation of the Bridge protocol architecture.
---

Thanks,


Muneyoshi Suzuki
Nippon Telegraph and Telephone Corp.