VDSL Performance & Tuning

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126 posts

Master Geek
+1 received by user: 4

#872873 6-Aug-2013 20:39

stevehodge:
RXV: Bandwidth (Up/Down) [kbps/kbps]: 10,351 / 42,108

However, when I go on to speedtest.net, I only get the following results:

Any idea why this is occuring? The router is reporting much higher numbers than I'm achieving at the computer.

Are you connecting the modem via WiFi or ethernet?

Tried both .. Ethernet slightly quicker, but still a relatively slow upload speed.

RXV

126 posts

Master Geek
+1 received by user: 4

#872874 6-Aug-2013 20:40

sidefx:
RXV:

Two questions - is there anyone on Geekzone that can help with cabling and do a good job, or can anyone recommend someone I can call?

Are in Auckland\Waikato area? If so Coffeebaron is the person to contact.

Thanks. I've sent Coffeebaron a PM to see if he can help.

Dairusire

333 posts

Ultimate Geek
+1 received by user: 113

#872986 7-Aug-2013 08:45

Sooooo, I took a photo of a customers broadband install that I did last week... This is on ADSL2+ aswell, not VDSL.

HiTM4N

256 posts

Ultimate Geek
+1 received by user: 22

Trusted

#873094 7-Aug-2013 11:51

Dairusire: Sooooo, I took a photo of a customers broadband install that I did last week... This is on ADSL2+ aswell, not VDSL.

That sync speed down is almost the same as my VDSL speed lol

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Jexlar

41 posts

Geek
+1 received by user: 5
Inactive user

#873110 7-Aug-2013 12:14

That's the closest I've seen ADSL2+ to it's rating.

Inphinity

2780 posts

Uber Geek
+1 received by user: 1184

#873129 7-Aug-2013 12:22

Dairusire: Sooooo, I took a photo of a customers broadband install that I did last week... This is on ADSL2+ aswell, not VDSL.

Looks about right, what am I missing? :/

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Jexlar

41 posts

Geek
+1 received by user: 5
Inactive user

#873140 7-Aug-2013 12:23

Inphinity:
Dairusire: Sooooo, I took a photo of a customers broadband install that I did last week... This is on ADSL2+ aswell, not VDSL.

Looks about right, what am I missing? :/

That's right, it does look right, but how many times have you seen an ADSL2+ line that looks about right?

Dairusire

333 posts

Ultimate Geek
+1 received by user: 113

#873143 7-Aug-2013 12:24

Inphinity:
Dairusire: Sooooo, I took a photo of a customers broadband install that I did last week... This is on ADSL2+ aswell, not VDSL.

Looks about right, what am I missing? :/

The fact that ADSL2+ has a theoretical maximum speed of 24mb/s and that modem is syncing up at 23.97mb/s.... real world speed that I tested on that connection was damn close too.

Inphinity

2780 posts

Uber Geek
+1 received by user: 1184

#873144 7-Aug-2013 12:25

Jexlar:
Inphinity:
Dairusire: Sooooo, I took a photo of a customers broadband install that I did last week... This is on ADSL2+ aswell, not VDSL.

Looks about right, what am I missing? :/

That's right, it does look right, but how many times have you seen an ADSL2+ line that looks about right?

I guess it's slightly above average, most I've seen sync at between 18 and 22mbps down and 1 - 1.2mbps up, a few at 23/24 down though.

Jexlar

41 posts

Geek
+1 received by user: 5
Inactive user

#873145 7-Aug-2013 12:27

I've never seen one above 20 down 1 up.

ANYWAY, getting a wee bit off topic....

JamesL

956 posts

Ultimate Geek
+1 received by user: 342
Inactive user

#874513 9-Aug-2013 12:26

Gone from 34/10 to 41/10 in the last couple of days

Looks like my SNR has dropped down to 9 if I'm to believe the Zyxel modem stats. I've emailed Snap if they can tell me what my attenuation is seeing as the Zyxel doesn't seem to report it correctly

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6297a1679f9

371 posts

Ultimate Geek
+1 received by user: 29
Inactive user

#874722 9-Aug-2013 18:47

@JamesL Hows your error rates looking like if your SNR dropped to 9?

JamesL

956 posts

Ultimate Geek
+1 received by user: 342
Inactive user

#874953 10-Aug-2013 08:23

Downstream Upstream
Since Link time = 3 days: 4 hours: 42 minutes
FEC: 0 23
CRC: 463 17
ES: 397 17
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0

Jarsky

142 posts

Master Geek
+1 received by user: 39

#875064 10-Aug-2013 13:48

Hmmmm not sure wether I should be concerned about the error rate im getting.
Was hoping I might make it onto 17a profile, had 1 resync so far with a shift from DLM-6 to DLM-4

Modem state: up
Up time (Days hh:mm:ss): 2 days, 9:35:23
xDSL Standard: ITU-T G.993.2
Channel Mode: Interleaved

Bearers generic info DS US
Payload rate [Kbps]: 50795 10352
Attenuation [dB]: 6.2 13.2
Margins [dB]: 12.4 21.8
Output power [dBm]: 13.5 -13.7

Number of bearers: 1
Bearer 0 DS US
INP [DMT symbols]: 1.00 1.00
Delay [ms]: 8.00 8.00
Depth []: 223 0.00
R: 16 0

FEC Errors (Up/Down): 20,433 / 49,732
CRC Errors (Up/Down): 62 / 249
HEC Errors (Up/Down): 0 / 5,746

sidefx

3775 posts

Uber Geek
+1 received by user: 1295

Trusted

#875070 10-Aug-2013 14:02

That works out to around 0.07 CRC Per minute down; I wouldn't worry too much about that.

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