VDSl connection speed != downloads speed

Forums › Spark New Zealand › VDSl connection speed != downloads speed

nickbrooker

24 posts

Geek
+1 received by user: 2

Topic # 191039 21-Jan-2016 06:14

Hi,

I've been on Telecom VDSL for a while now and generally been pretty happy with it.

Something changed yesterday though hopefully in a good way. The connection reset in the afternoon and now the connection speed has increased.

We had about 46Mb before and speedtest etc said about that number, today modem says 62-63MB but speed test etc still shows the same 45-46Mb down even at 6AM :-)

Anyone else seen anything similar? I guess our last mile is a bit shorter now as the modem says concentrator POP-BNG01 which I think is different.

Nick

PeterReader

5542 posts

Uber Geek
+1 received by user: 249

Trusted

Geekzone

Lifetime subscriber

Reply # 1475813 21-Jan-2016 06:14

Hello... Our robot found some keywords in your post, so here is an automated reply with some important things to note regarding broadband speeds.

If you are posting regarding DSL speeds please check that

you have reset your modem and router
your PC (or other PCs in your LAN) is not downloading large files when you are testing - you are not being throttled by your ISP due to going over the monthly cap
your tests are always done on an ethernet connection to the router - do not use wireless for testing
you read this topic and follow the instructions there.

Make sure you provide information for other users to help you. If you have not already done it, please EDIT your post and add this now:

Your ISP and plan
Type of connection (ADSL, ADSL2, VDSL)
Your modem DSL stats (do not worry about posting Speedtest, we need sync rate, attenuation and noise margin)
Your general location (or street)
If you are rural or urban
If you know your connection is to an exchange, cabinet or conklin
If your connection is to a ULL or wholesale service
If you have done an isolation test as per the link above

Most of the problems with speed are likely to be related to internal wiring issues. Read this discussion to find out more about this. Your ISP is not intentionally slowing you down today (unless you are on a managed plan). Also if this is the school holidays it's likely you will notice slower than usual speed due to more users online.

A master splitter is required for VDSL2 and in most cases will improve speeds on DSL connections. Regular disconnections can be a monitored alarm or a set top box trying to connect. If there's an alarm connected to your line even if you don't have an alarm contract it may still try to connect so it's worth checking.

I recommend you read these two blog posts:

I am the Geekzone Robot and I am here to help. I am from the Internet. I do not interact. Do not expect other replies from me.

johnr

19282 posts

Uber Geek
+1 received by user: 2600
Inactive user

Reply # 1475823 21-Jan-2016 06:29

Are you testing over WiFi or Ethernet?

nickbrooker

24 posts

Geek
+1 received by user: 2

Reply # 1475825 21-Jan-2016 06:37

Hi,

testing via wired link.

We have a Telecom TG589vn v2 that hooks to VDSL and a Cisco router behind that. So more devices than usual so it might be worth hooking straight to the modem.

sbiddle

26957 posts

Uber Geek
+1 received by user: 6407

Moderator

Trusted

Biddle Corp

Lifetime subscriber

Reply # 1475834 21-Jan-2016 07:27

Your VDSL2 bandplan changed from 997 to 998. There are a number of threads on here about this very issue.

As for speeds not matching sync I'd imagine that Spark like many ISPs queue traffic in their BNG based on sync speed and this hasn't caught up yet.

johnr

19282 posts

Uber Geek
+1 received by user: 2600
Inactive user

Reply # 1475838 21-Jan-2016 07:35

Give it a week or so and speed should increase

cbrpilot

676 posts

Ultimate Geek
+1 received by user: 222

Trusted

Spark NZ

Reply # 1475843 21-Jan-2016 07:46

What device does you PPP link? The Technicolor, or the Cisco?

When the DSL went down, did the PPP go down? If not, reset your PPP connection and you should be right.

My views are my own, and may not necessarily represent those of my employer.

BarTender

2423 posts

Uber Geek
+1 received by user: 821

Trusted

Lifetime subscriber

Reply # 1475853 21-Jan-2016 08:14

One person supports this post

sbiddle:
Your VDSL2 bandplan changed from 997 to 998. There are a number of threads on here about this very issue.

As for speeds not matching sync I'd imagine that Spark like many ISPs queue traffic in their BNG based on sync speed and this hasn't caught up yet.

Sort of right.

Your downlink speed is tied to what Chorus give Spark when the PPPoE link comes up. The 998 band plan causes the line to drop and come up again. So any change at that point would have caused the speed to be recalculated.

So in short a restart of everything should fix it. If it doesn't then it could be your configuration or poor wiring impacting the speed.

As there is normally two speeds listed for your DSL connection. Attainable speed and actual speed. The difference in those two numbers is the quality of your internal wiring and line back to the DSLAM.

nickbrooker

24 posts

Geek
+1 received by user: 2

Reply # 1476279 21-Jan-2016 17:20

Thanks for the replies. I've given it a power cycle and we'll see how things go.

I'm not sure I 100% trust the Thompson router though. I have to keep factory resetting it or the firewall stops inbound traffic to the exposed Cisco router. Even though the GUI says the firewall is off. It just does odd things.

I'd be quite happy if our speedtest went to 65Mb down though :-)

sbiddle

26957 posts

Uber Geek
+1 received by user: 6407

Moderator

Trusted

Biddle Corp

Lifetime subscriber

Reply # 1476363 21-Jan-2016 19:50

One person supports this post

Since it only needs to function in bridge mode I'd suggest buying a better modem such as a Draytek DV130

nickbrooker

24 posts

Geek
+1 received by user: 2

Reply # 1476479 22-Jan-2016 06:30

Snap! That's what I thought and ordered. We used to use loads of 120s in PPPoE/PPPoA auth mode and they lasted forever so I thought I'd give a 130 a go.

Thanks