[AusNOG] Looks like the NBN will be a PON variant for sure...

[John Lindsay]

No Macca, the perfect place is on the network side not inside your home.

In other parts of the world you tend to get boxes called ONT

http://www.enablence.com/fttx-networks/solutions/trident7/ont

that turn the PON into one, two or four flat or trunk Ethernet port(s).

Depending on the service provider and the customer desires, users then  
either plug straight into the Ethernet for PPPoE or PPTP access or  
they get a routed layer 3 IP address via DHCP that may or may not be  
NATed.

Many parts of the world have gone down the Layer 3 to the customer  
path for NBN type networks.

I'm not at all sure what will win in Australia.  It will probably come  
down to some faceless advisor deciding during his/her morning shower.

I think you can make a very strong argument that Layer 3 is "greener"  
which also means "cheaper to operate" on the basis of needing slightly  
less boxes.

The Layer 2 thing can make life easier for LI, filtering, shaping and  
billing but it really depends on your vendor choices.

HFC networks are often operated as Layer 3 with customers even being  
able to see their neighbours at Layer 2.

ADSL networks are often operated as Layer 2 with all traffic  
encapsulated in PPP.

But IPTV is much easier and more efficient if it's Layer 3 and ADSL  
networks can do that too, even at the same time as encapsulating the  
Internet access.

jsl

On 29/04/2009, at 7:37 AM, McDonald Richards wrote:

> Mr Conroy talks splitter technology:
>
> http://www.itnews.com.au/News/101939,nbn-conroy-gets-his-geek-hat-on.aspx
>
> Let's hope they commit to using some form of open standard for CPE  
> and we
> aren't all locked in to using the "NBN Blackbox" (perfect place for
> government departments to filter and intercept your content?).
>
> I wonder how Netcomm, D-Link, Linksys and other manufacturers of  
> small home
> networking devices would respond to that.
>
> Macca
>
>
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