Re: Difference between services provided by Q-in-Q and VPLS.

On Tue, Oct 9, 2012 at 3:37 PM, Torleif Solli <rgi_at_stord.as> wrote:
> Isn't QinQ point to point and VPLS is point to multipoint ?

Not really, no. Q-in-Q and VPLS are really not directly comparable as
services, as one is designed to operate in a pure switched environment
and scale the relatively limited number of VLANs (QinQ), while the
other is designed to provide end-to-end multipoint L2 connectivity
over the MPLS packet core.

In many cases, QinQ and VPLS are actually used together, where SPs
don't support MPLS in the access layer in a design topology referred
to as "Hierarchical VPLS".

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Marko Milivojevic - CCIE #18427 (SP R&S)
Senior CCIE Instructor - IPexpert
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