[AusNOG] NBN VDSL Speeds | Line Sync | Determining Max Throughput
Damien Gardner Jnr
rendrag at rendrag.net
Wed Mar 15 06:16:13 EST 2017
Just to add privately. If you don't have access to an SQ tool, and you're
on a Telstra PSTN line, I'm happy to run an SQ for you if you don't mind
shooting me your landline number :)
On 15 March 2017 at 06:15, Damien Gardner Jnr <rendrag at rendrag.net> wrote:
> Your ADSL sync won't really help give you any idea as to your likely VDSL
> sync, as ADSL is you->pillar->exchange (or you->pillar->rim, or in some
> cases you->pillar->rim->exchange), where as VDSL will be you->pillar->node.
> If you have access to an SQ tool which provides cabling detail, you can
> punch your phone number in and pull back your cabling records, to see how
> far from the pillar you are. The node is usually < 100m from the pillar.
> Once you have the distance, and the number of joints, you have a pretty
> good idea of your sync speed :)
>
> On 15 March 2017 at 00:08, Ben Cummings <bcummings at clublinks.com.au>
> wrote:
>
>> Thank you all for taking the time to reply, I really appreciate your
>> quick and informative responses.
>>
>> So my understanding now is that Maximum Line Rate/Attainable Rate ≠ Line
>> Sync Rate.
>> And to avoid a hypothetical scenario where I get stuck on a contract
>> paying for a 50Mbps service, that will only ever allow me to see 30Mbps - I
>> need to connect a modem that shows the maximum attainable rate, to see what
>> I can actually achieve.
>>
>> Unfortunately it doesn't appear my new learning project provides that
>> information (unless a VDSL connection shows detail than a ADSL connection
>> does) - so I'll have to borrow something to examine that further.
>>
>> But I'm very much looking forward to being able to push through more than
>> 13/0.8 !
>>
>> bcummings at the320> show interfaces at-2/0/0 extensive
>> --snip--
>> ADSL status:
>> Modem status : Showtime (Adsl2plus)
>> DSL mode : Auto Annex A
>> Last fail code: None
>> Subfunction : 0x00
>> Seconds in showtime : 73848
>> ADSL Chipset Information: ATU-R ATU-C
>> Vendor Country : 0xb5 0xb5
>> Vendor ID : BDCM BDCM
>> Vendor Specific: 0x9385 0xa1f2
>> ADSL Statistics: ATU-R ATU-C
>> Attenuation (dB) : 31.0 18.0
>> Capacity used (%) : 0 0
>> Noise margin (dB) : 6.0 7.5
>> Output power (dBm) : 19.0 12.0
>>
>> Interleave Fast
>> Interleave Fast
>> Bit rate (kbps) : 15128 0
>> 1087 0
>> CRC : 0 474
>> 0 0
>> FEC : 0 0
>> 0 0
>> HEC : 24722 0
>> 0 0
>> Received cells : 544249614 0
>> Transmitted cells : 108703718 0
>>
>>
>> Thanks again everyone.
>>
>> Kind Regards,
>>
>> Ben Cummings
>> Clublinks
>>
>>
>> -----Original Message-----
>> From: Matthew Muscat [mailto:matthew at mamis.com.au <matthew at mamis.com.au>]
>> Sent: Tue 14/03/2017 22:45
>> To: Ben Cummings
>> Cc: ausnog at lists.ausnog.net
>> Subject: Re: [AusNOG] NBN VDSL Speeds | Line Sync | Determining Max
>> Throughput
>>
>> You should be able to see the maximum line rate (depending on your modem)
>> -
>> I've got an ISP Supplied (Internode) Technicolour TG-789.
>>
>> We're about 20m from the pillar and have a 100/40 service - max line rate
>> appears currently at 140/57 (see below)
>>
>> DSL Stats:
>>
>> Maximum Line rate: 57.62 Mbps 140.91 Mbps
>> Line Rate: 44.19 Mbps 107.73 Mbps
>> Output Power -1.1 dBm 8.3 dBm
>> Noise Margin 15.4 dB 15.6 dB
>> Line Attenuation 3.1, 12.3, 18.5 dB 7.7, 16.3, 23.5 dB
>>
>> Regards,
>> [image: Mamis] Matthew Muscat
>> Director
>> p +61 3 9024 5755 <+61%203%209024%205755> <+61390245755
>> <+61%203%209024%205755>>
>> m +61 425 782 555 <+61%20425%20782%20555> <+61425782555
>> <+61%20425%20782%20555>>
>> e matthew at mamis.com.au
>> w www.mamis.com.au
>>
>> On 14 March 2017 at 21:04, Richard Ham (lists) <rich-lists at edit-co.com>
>> wrote:
>>
>> > My Zyxel VMG8324-B10A shows the following stat on a 50/20 service. A
>> NF8AC
>> > doesn't have any such stats that I can find.
>> >
>> >
>> >
>> > Line Rate: 22.599 Mbps 54.998 Mbps
>> >
>> > Actual Net Data Rate: 22.600 Mbps 54.999 Mbps
>> >
>> > Attainable Net Data Rate: 39.884 Mbps 97.528 Mbps
>> >
>> >
>> >
>> > A cisco 887 I have says the following in an sh controllers vdsl 0
>> >
>> >
>> >
>> > Attainable Rate: 138131 <13%2081%2031> kbits/s 48351
>>
>> > kbits/s
>> >
>> > -snip-
>> >
>> > DS Channel1 DS Channel0 US Channel1 US
>> > Channel0
>> >
>> > Speed (kbps): 0 28000 0
>> > 6400
>> >
>> >
>> >
>> > Cheers,
>> >
>> >
>> >
>> > Richard
>> >
>> >
>> >
>> >
>> >
>> > 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>
>> > 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
>> >
>> >
>> >
>> >
>> >
>> > _______________________________________________
>> > AusNOG mailing list
>> > AusNOG at lists.ausnog.net
>> > http://lists.ausnog.net/mailman/listinfo/ausnog
>> >
>> >
>> > _______________________________________________
>> > AusNOG mailing list
>> > AusNOG at lists.ausnog.net
>> > http://lists.ausnog.net/mailman/listinfo/ausnog
>> >
>> >
>>
>>
>>
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>>
>
>
> --
>
> Damien Gardner Jnr
> VK2TDG. Dip EE. GradIEAust
> rendrag at rendrag.net - http://www.rendrag.net/
> --
> We rode on the winds of the rising storm,
> We ran to the sounds of thunder.
> We danced among the lightning bolts,
> and tore the world asunder
>
--
Damien Gardner Jnr
VK2TDG. Dip EE. GradIEAust
rendrag at rendrag.net - http://www.rendrag.net/
--
We rode on the winds of the rising storm,
We ran to the sounds of thunder.
We danced among the lightning bolts,
and tore the world asunder
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