[AusNOG] NBN VDSL Speeds | Line Sync | Determining Max Throughput

[Nick Pratley]

I sync at 46/17 and buy 50/20. The line isn't that long so I am sure if I
purchased 100/40 it'll sync higher.

Shows max rate as my sync rate on the juniper...

On Tuesday, March 14, 2017, Robert Hudson <hudrob at gmail.com> wrote:

> Also note that given CVC costs, your sync speed is very unlikely to be
> your usable end-to-end speed...
>
> I know many people who had 100/40 services and downgraded themselves to
> 25/5 services because that's all they could get as meaningful Internet
> access anyway...
>
> On 14 March 2017 at 20:35, Damien Gardner Jnr <rendrag at rendrag.net
> <javascript:_e(%7B%7D,'cvml','rendrag at rendrag.net');>> wrote:
>
>> You'll sync at your purchased speed, with attainable rate showing your
>> line's possible maximum.  E.g. I pay for 50/20, so sync at 55/22.  When I
>> was previously paying for 100/40 on the same line, I was syncing at
>> 110/44.  Not sure on attainable rate, as the HG658 doesn't show it :\
>>
>>
>>
>> On Tue, 14 Mar 2017 at 8:31 pm, Ben Cummings <bcummings at clublinks.com.au
>> <javascript:_e(%7B%7D,'cvml','bcummings at clublinks.com.au');>> wrote:
>>
>>> Hello All,
>>>
>>> Just a quick question that will likely be a quick answer for someone
>>> with more familiarity on the subject matter.
>>>
>>> I haven't had much exposure to the inner workings of the NBN or xDSL (so
>>> please excuse my ignorance) and haven't been able to find an answer
>>> elsewhere.
>>>
>>> I'm not too far away from getting FTTN at home, and am curious as to
>>> whether my standard 25/5 plan will show me a line sync speed of let's say
>>> for arguments sake, 65000 but have a maximum throughput of 25000 set
>>> further upstream by the RSP (thus suggesting a 50Mbps plan would allow me
>>> to use up to the full 50Mbps, but that I wouldn't be able to achieve near
>>> full utilisation of a 100Mbps service) -or- would a 25/5 service show my
>>> line sync as 25000 and provide me no real indication of what I could
>>> theoretically push through the copper after attenuation, equipment choice
>>> and cable wear and tear comes in to play if the cap were taken off.
>>>
>>> Any insights or wisdom on this would be greatly appreciated.
>>>
>>> Kind Regards,
>>>
>>> Ben Cummings
>>> Clublinks
>>>
>>>
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>>
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>

-- 

 Regards,
​​
 Nick Pratley Senior Network Operator [image: Facebook]
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