[LINK] NBN layer 3 services

[Paul Brooks]

Glen Turner wrote:
> Anyway, my view is somewhat different to both the NBN and
> Cisco.  I'd like to see the interface between NBN and upstream
> defined as a tunnel to a IPv6 endpoint on the customer's
> set-top box.
>   
Glen, the interface between NBN and an upstream provider is defined as a 
Q-in-Q ethernet-framed tunnel.
It could go to an IPv6 endpoint at the customer - but it could go to 
something else as well.

> But more importantly is the policy issue. At one extreme,
> a GPON interconnect means that only telcos in a position
> to make a large up-front investment can be upstreams to
> the NBN. This will restrict competition, as there are only
> a few telcos with the capital, and it will inhibit
> innovation, as no one will take a punt on a high up-front
> capital to test and develop an idea.  Practically, you
> won't see cheap services (even established services such
> as pay TV) with this model.
>   
Glen, I'm not sure I follow you here. The GPON is just an access network 
technology that NBN takes care of. The service provider interconnect to 
the NBN is currently thought to be double-tagged ethernet 
(gig/10gig/100gig).
Upstream service providers need not know anything about GPON or direct 
fibre, and whether an upstream service provider needs to make a large or 
small investment to connect into NBN is a function of where the closest 
interconnect point might be, nothing to do with PON/GPON. As long as a 
small provider can connect into NBN using a GigE port, they can connect 
to an IPv6 settop box at the customer end, and assign the IPv6 address 
too if they wish.

Paul.