VDSL Slower than my ADSL

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Athlonite

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#1571051 13-Jun-2016 14:28

So at 30.3db of attenuation the op is at double the allowed limit then I would say the problem is he has to many errors/packet loss requiring retries hence being synced at 20mbps but only getting 9mbps of throughput

@OP can you please post a screen shot from the NF4V's device info / statistics / xDSL page

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#1571088 13-Jun-2016 15:27

A downstream attenuation of 30 dB suggests a line length of more than 2km, with a theoretical maximum speed of 15Mbps with either ADSL2 or VDSL2.

Do you have a VDSL master filter installed?
At extreme distances like this you need one to get any chance of a decent connection.

EDIT: IMHO VDSL master filters should be standard issue for all VDSL installations.

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hio77

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#1571158 13-Jun-2016 16:56

Athlonite:

So at 30.3db of attenuation the op is at double the allowed limit then I would say the problem is he has to many errors/packet loss requiring retries hence being synced at 20mbps but only getting 9mbps of throughput

@OP can you please post a screen shot from the NF4V's device info / statistics / xDSL page

you have to remember thats 30dB on the modem vs assumingly less than 15dB on the range for chorus's network tools. Both are done at very different points in the connection.

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Salami

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#1592843 14-Jul-2016 23:13

Athlonite:

So at 30.3db of attenuation the op is at double the allowed limit then I would say the problem is he has to many errors/packet loss requiring retries hence being synced at 20mbps but only getting 9mbps of throughput

@OP can you please post a screen shot from the NF4V's device info / statistics / xDSL page

hio77

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#1592845 14-Jul-2016 23:15

your snr is riding a little high there, otherwise for the line length that doesn't look too bad.

as @athlonite indicated though, suspect errors they should be listed further down that image you posted above.

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Salami

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#1592854 15-Jul-2016 00:33

Does the stat here show the problem?
How to reduce SNR?

hio77

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#1592855 15-Jul-2016 00:35

snr riding high means theres alot of noise in the line. Not alot you can do there, its just something worth noting from what you had shown.

Your eerror rates dont look bad, im assuming a reasonable uptime here.

DLM-1, are you still not getting about 16/1 throughput?

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tdgeek

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#1592888 15-Jul-2016 07:52

Sideface:

A downstream attenuation of 30 dB suggests a line length of more than 2km, with a theoretical maximum speed of 15Mbps with either ADSL2 or VDSL2.

Do you have a VDSL master filter installed?
At extreme distances like this you need one to get any chance of a decent connection.

EDIT: IMHO VDSL master filters should be standard issue for all VDSL installations.

Exactly, I thought it was mandatory rather than advisable.

Athlonite

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#1593188 15-Jul-2016 14:38

hio77:

snr riding high means theres alot of noise in the line. Not alot you can do there, its just something worth noting from what you had shown.

Your eerror rates dont look bad, im assuming a reasonable uptime here.

DLM-1, are you still not getting about 16/1 throughput?

Those error rates are 10x what I get though

hio77

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#1593240 15-Jul-2016 16:58

Athlonite:

Those error rates are 10x what I get though

Thats comparing apples to oranges.

The OP needs to show line errors, With the connection uptime (which is on the same page) to generate some sort of a figure.

That many errors on a connection up for 5 mins, bad. a connection up for say several days, likely works out WAY less.

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