New ADSL Modem/Router - Slow internet

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1eStar

1604 posts

Uber Geek

#136239 20-Nov-2013 09:34

Hello all,

I'm having trouble with very slow connections. On a TelstraClear ADSL connection. The last Speedtest showed ping 39ms 0.05Mbps Down and 0.02Mbps Up.

Here's the Modem stats:

Modulation : ADSL2+
Annex Mode : Annex A/L
Line State : up
Lan Tx : 53214
Lan Rx : 32025
ADSL Tx : 8617
ADSL Rx : 12820
CRC Down : 0
CRC Up : 0
FEC Down : 0
FEC Up : 74
HEC Down : 0
HEC Up : 0
SNR Up : 12.6
SNR Down : 12.3
Line Attenuation Up : 5.6
Line Attenuation Down : 7.5
Data Rate Up : 951
Data Rate Down : 17645

The strange thing is, the connection on the local network is slow too, even logging into the Router admin page is slow. And the Modem stats are not static, here's the stats that have flashed up now:

Modulation : 4
Annex Mode : Annex A
Line State : 3
Lan Tx : 55322
Lan Rx : 33503
ADSL Tx : 9940
ADSL Rx : 14388
CRC Down : 0
CRC Up : 0
FEC Down : 0
FEC Up : 74
HEC Down : 0
HEC Up : 0
SNR Up : 12.7
SNR Down : 12.3
Line Attenuation Up : 5.6
Line Attenuation Down : 7.5
Data Rate Up : 951
Data Rate Down : 17645

I have replaced a faulty modem/router (actually on 3rd one now) purchased an ASUS DSL-N55U on recommendation by PB-tech after two faulty TP-Link W6898 units.

I've had it working properly to start with, I'm now wondering if I'm on a third dud modem router, or if I've got some more serious issues.

For dear Peter Reader, yes I have a master filter installed.

If anyone can shed any insight into what's happening I'd appreciate it.

PeterReader

6019 posts

Uber Geek

Trusted

Geekzone

Lifetime subscriber

#937716 20-Nov-2013 09:34

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:

- Is your premises phone wiring impacting your broadband performance? (very technical)

- Are you receiving a substandard ULL ADSL2+ connection from your ISP?

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.

ubergeeknz

3344 posts

Uber Geek

Trusted

Vocus

#937734 20-Nov-2013 09:49

Your DSL stats are fine. The numbers you see changing are actually counters, so it's normal for them to increase. Look to the bottom two numbers which refer to your sync rate.

How are you connected to the router? It sounds as if your problem may lie here.

1eStar

1604 posts

Uber Geek

#937746 20-Nov-2013 10:16

Home PC connects via wired LAN. I just swapped out the CAT5 to ensure there is no glitch there. I connect via wifi on smartphone, and results are somewhat similar, only a higher upload speed on speedtest.net is of note. The strange thing is, it was working all fine about two days ago when I first installed it. Is there some possibility that the line has been changed to a different profile? i.e. should I be chasing the Telstra end of the connection or this LAN end?

RunningMan

8960 posts

Uber Geek

#937778 20-Nov-2013 10:33

Your general DSL stats look excellent, however, this bit is odd on the second lot of stats.

Modulation : 4

Line State : 3

Is the connection dropping and re-syncing a lot? Check the DSL light on the modem, or check the log to see.

Having said that, the obvious thing is your speedtest result suggests you have hit your data cap and been throttled.

RunningMan

8960 posts

Uber Geek

#937785 20-Nov-2013 10:39

Also, check which firmware revision you have for the Asus - this thread details some significant reliability issues on older firmware versions.

http://www.geekzone.co.nz/forums.asp?forumid=66&topicid=115228

1eStar

1604 posts

Uber Geek

#937879 20-Nov-2013 13:19

Thanks guys for your input. It feels like it's doing random disconnects, but I can't find any logs or evidence of this happening. Some sites are loading ok now after a few hours, but the last speedtest I tried failed to complete. I wish I'd read that thread when I was in the shop buying the modemrouterwifi, I was tossing up between the top range TP-link and a midrange Draytek. but the salesman steered me towards the Asus at about twice the price. My firmware says it's up to date when I check. I'm wondering if it's worth calling TelstraVodaClear, usually it's an exercise in patience.

ubergeeknz

3344 posts

Uber Geek

Trusted

Vocus

#937881 20-Nov-2013 13:21

Open up a command prompt and run ping -t telstraclear.net - or your internet host of choice. This should tell you pretty quick if your connection is actually dropping or you have some other problem.

Check the MTU that your modem's using too, 1492 is probably a good starting point.

Sharesies

Trade NZ and US shares and funds with Sharesies (affiliate link).

1eStar

1604 posts

Uber Geek

#937911 20-Nov-2013 13:56

ubergeeknz: Open up a command prompt and run ping -t telstraclear.net - or your internet host of choice. This should tell you pretty quick if your connection is actually dropping or you have some other problem.

Check the MTU that your modem's using too, 1492 is probably a good starting point.

MTU = 1492

cmd ping -t telstraclear.net.nz

returns "request timed out" multiple times down the page. I don't know enough to know what this means.