I’m fairly certain that billing systems of this scale are pretty doable and not 
a limiting factor and isn’t a reason to not do this. 

I don’t agree backhaul providers would have to change - many people who emailed 
me are already paying for fixed wavelength type services - this just makes 
their job a little easier.

MMC

> On 30 Jul 2017, at 4:37 pm, Paul Brooks <pbrooks-aus...@layer10.com.au> wrote:
> 
> Back in the day*, one of the considerations in designing the NBN was avoiding 
> the
> costs of putting in a mother-of-all traffic monitoring and measurement system 
> that
> would retrieve and store usage data on all the 10+million endpoints. By 
> keeping the
> product suite a set of one-time-charge and fixed monthly values, no 
> measurement was
> required, the billing was kept simple, and periodic counter polling and 
> associated
> data reduction, processing, storage, and robustness of systems was avoided.
> Clearly that has been superseded at least on the satellite links, where NBN 
> are
> tracking usage anyway.
> 
> Now you are talking about the CVC layer, not end-user, so theres a few orders 
> of
> magnitude reduction in polling and storage required to do traffic monitoring 
> to
> implement a p95 rating system just on CVCs - but the current system for all 
> its faults
> has the benefits that the costs and complexity of polling, calculating and 
> billing on
> usage are avoided, and billing disputes between RSPs and NBN are fairly 
> binary with
> the biggest possible area of contention being what date a billable element 
> become
> billable or not.
> 
> Also, for most PoIs, NBN switching to a p95 model of billing would require the
> backhaul network transmission providers to also switch to a p95 model to 
> become
> effective. If the backhaul providers are selling transmission between 
> capital-city and
> POI in fixed increments that take 6 weeks to upgrade , then the NBN's 
> charging model
> is almost irrelevant, and the incentive to delay upgrading the backhaul 
> transmission
> retains the same problem.
> In fact, its arguable how much of the congestion is caused by CVC and how 
> much by
> unwillingness to increase backhaul capacity to manage cost.
> 
> (*'Back in the day' means before the CVC/AVC and commercial structure was a 
> twinkle in
> someone's eye)
> 
> Paul.
> 
> 
> 
> 
> 
> On 30/07/2017 6:36 AM, Matthew Moyle-Croft wrote:
>> Hi,
>> So, feel free to shoot me here.  But curious for response either here or 
>> privately.  I don’t live in Australia but I still do care deeply about 
>> broadband in Oz having something to do with it for quite a few years.
>> 
>> The big issue with NBN at the moment appears to be congestion related to the 
>> amount of CVC being purchased by ISPs.  The congestion is artificial because 
>> CVCs are bought, as I still understand it, in fixed amounts. (ie. we haven’t 
>> moved on from TW ADSL wholesale arrangements).
>> 
>> Is buying the CVC in fixed amounts the right model?  What if it moved to a 
>> “transit” like p95 kind of model?  I get that there is some level of risk 
>> for the ISP that CVC cost could jump up a lot, but presumably it would be 
>> related to customer growth at a POI.  It might also allow connecting to new 
>> POIs where you have less customers.  I can see some guardrails around this - 
>> ie. a maximum amount maybe per POI? 
>> 
>> At least if you were smart about this it’d allow ISPs to avoid congestion as 
>> customer bases are growing as more houses are onboarded.
>> 
>> Given the nature of users I don’t think a p95 number could be gamed 
>> particularly, but it would ease some of the peaks a bit. 
>> 
>> Thoughts?
>> 
>> MMC
>> _______________________________________________
>> AusNOG mailing list
>> AusNOG@lists.ausnog.net
>> http://lists.ausnog.net/mailman/listinfo/ausnog
> 
> 

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