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<p class=MsoNormal><span style='color:#1F497D'>“</span>but will be forced
to travel all the way out to an interconnect point and through RSP1, then be
handed over to RSP2”<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>That’s just the nature of the beast, if factory #1 was
really serious about exchanging large volumes of traffic to the premises next
door wouldn’t they be eligible to purchase a layer2 style of service from
an RSP? I haven’t seen any thing so far that mandates that providers must
only sell layer3 services. Surely the RSP could apply for a VLAN to be mapped
between port X on customers ONT and mapped to another port on another ONT?<o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:windowtext'>From:</span></b><span style='font-size:10.0pt;font-family:
"Tahoma","sans-serif";color:windowtext'> ausnog-bounces@lists.ausnog.net
[mailto:ausnog-bounces@lists.ausnog.net] <b>On Behalf Of </b>Paul Brooks<br>
<b>Sent:</b> Thursday, 22 April 2010 2:10 PM<br>
<b>To:</b> ausnog@lists.ausnog.net<br>
<b>Subject:</b> Re: [AusNOG] NBN Co Layer 2 vs. Layer 3 Services<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I've had several people bend my ear as to why they think
NBNCo should be layer 3/IP, coming mainly from ATUG and end-user land.<br>
Most of it was from several months ago before CA and NBNCo put out the
consultation papers outlining why we thought Layer 2 was the way to go.<br>
<br>
I haven't heard any particularly persuasive arguments, or a clear articulation
of the problem that would be solved by NBNCo being 'Layer 3', and I would have
hoped that the consultation papers would explain why NBNCo doing Layer 2 didn't
mean the Layer 3 services from RSPs would be limited. <br>
<br>
For fairness, one of the arguments was around traffic efficiency - that in a
Layer-2 model, traffic from (say) a factory connected to one RSP that wanted to
get to (say) a business partner located physically right next door that was
connected to a different RSP would not follow an optimal path across the
street, but will be forced to travel all the way out to an interconnect point
and through RSP1, then be handed over to RSP2, then have to travel all the way
back to the recipient - possibly hundreds of kilometres. The guys
advocating for Layer3 seem to assume that NBNCo's routers would allow the
traffic to cut-through and stay entirely local, and would not have to hit
either of the RSPs core networks at all. I remain unconvinced.<br>
<br>
I note Phil Dobbie has just released a Twisted Wire episode looking at Layer 3,
that I haven't listened to yet - Skeeve, is the Twisted Wire podcast that led
to your question?<br>
<br>
P.<br>
<br>
<br>
On 22/04/2010 9:22 AM, McDonald Richards wrote: <o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>I’ve been to a couple of
their workshops now and from what I can tell, NBN Co have no intention of
providing a layer 3 service. Where are the other voices and are they people
with clue or just opinion pieces from industry commentators?</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>Macca</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <a
href="mailto:ausnog-bounces@lists.ausnog.net">ausnog-bounces@lists.ausnog.net</a>
[<a href="mailto:ausnog-bounces@lists.ausnog.net">mailto:ausnog-bounces@lists.ausnog.net</a>]
<b>On Behalf Of </b>Skeeve Stevens<br>
<b>Sent:</b> Thursday, 22 April 2010 9:03 AM<br>
<b>To:</b> <a href="mailto:ausnog@ausnog.net">ausnog@ausnog.net</a><br>
<b>Subject:</b> [AusNOG] NBN Co Layer 2 vs. Layer 3 Services</span><o:p></o:p></p>
</div>
</div>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><span style='color:#002060'>Hey all,</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#002060'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#002060'>Just a quick question. </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#002060'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#002060'>At the moment there is a lot of
talk of NBN and whether they are going to deliver Layer 2 or Layer 3 services.</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#002060'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#002060'>I am a little confused about
what is meant by that. In that as ISP’s, I would assume that we
would only want Layer 2 services from them? Just in kind of a DSL
Wholesale/Ethernet wholesale/etc situation that we already have.</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#002060'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#002060'>Most of our ISP customers would
be happy if the NBN operated just like the current wholesale models out there
at the moment. Little ISP calls his aggregator and says he wants a NBN
VLAN to this address which they get from NBNCo (if directly if you are big
enough and can afford to interconnect yourself), which is turned on and
presented at an aggregation port... very much like taking wholesale ethernet
from Pipe, Nextgen, Telstra and others today.</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#002060'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#002060'>This makes sense to me.</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#002060'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#002060'>But there is a bunch of voices
saying they want the NBN Co to do Layer 3... and I am not quite sure what is
meant by that? Users buy bandwidth off the NBN Co? Turning them into a
retail ISP?</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#002060'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#002060'>If this seems like a stupid
question, I am sorry about that... but there are some voices who have access to
presenting their views and are doing so about NBN should be doing Layer 3... and
I am trying to find some understanding about what is actually being suggested.</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#002060'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#002060'>...Skeeve</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#002060'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#002060'>--</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#002060'>Skeeve Stevens,
CEO/Technical Director</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#002060'>eintellego Pty
Ltd - The Networking Specialists</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#002060'><a
href="mailto:skeeve@eintellego.net">skeeve@eintellego.net</a> / <a
href="http://www.eintellego.net">www.eintellego.net</a></span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#002060'>Phone: 1300 753
383, Fax: (+612) 8572 9954</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#002060'>Cell +61 (0)414
753 383 / <a href="skype://skeeve">skype://skeeve</a></span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#002060'><a
href="http://www.linkedin.com/in/skeeve">www.linkedin.com/in/skeeve</a> ; facebook.com/eintellego</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#002060'>--</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#002060'>NOC, NOC, who's
there?</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#002060'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:8.0pt;color:#002060'>Disclaimer:
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<pre><o:p> </o:p></pre><pre><o:p> </o:p></pre><pre>_______________________________________________<o:p></o:p></pre><pre>AusNOG mailing list<o:p></o:p></pre><pre><a
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<br>
<br>
<o:p></o:p></span></p>
<pre>-- <o:p></o:p></pre><pre>Paul Brooks | Mob +61 414 366 605<o:p></o:p></pre><pre>Layer 10 Advisory | Ph +61 2 9402 7355<o:p></o:p></pre><pre>-------------------------------------------------------<o:p></o:p></pre><pre>Layer 10 - telecommunications strategy & network design<o:p></o:p></pre></div>
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