Slow for months then fast for months now slow again

Connection issues, drop outs or speed related faults for ADSL and ADSL2+ services
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Dionysus
Posts: 14
Joined: Wed Apr 09, 2008 11:14 am
Location: Melbourne

Slow for months then fast for months now slow again

Post by Dionysus » Wed Apr 21, 2010 2:48 pm

Hi all,
My dowload speeds were about 4Mb/s pretty consistently then, about a year ago, they dropped to about 1Mb/s or less. I spent a lot of time trying to trouble shoot things and was about to have a line test done by exetel when the speeds spontaneously went back to around 4-5Mb/s and stayed there. That was about 6 months ago and they've been consistently around that speed until about a week ago when they dropped back to below 1Mb/s where they've been ever since. I changed nothing at my end either hardware, software or firmware. I'm now worried that this is the start of another 6 months of slow speeds. We never reach our download limit so it's nothing to do with shaping.

The below is my history of results at speedtest.net. It doesn't show the consistency of the fast speeds because I don't tend to test the speed when I'm happy with the performance but it's across the board. Have been able to watch iView no probs for the last six months but can't now and couldn't before November last year for 6 months. I'm in Northcote in Melbourne.

4/21/2010 4:11 AM GMT 0.63 Mb/s 0.22 Mb/s 71 ms Melbourne < 50 mi
12/8/2009 4:51 AM GMT 5.25 Mb/s 0.68 Mb/s 29 ms Melbourne < 50 mi
9/24/2009 6:17 AM GMT 1.44 Mb/s 0.25 Mb/s 47 ms Melbourne < 50 mi
7/11/2009 10:27 AM GMT 1.22 Mb/s 0.20 Mb/s 58 ms Melbourne < 50 mi
6/19/2009 9:27 AM GMT 1.31 Mb/s 0.19 Mb/s 57 ms Melbourne < 50 mi
6/9/2009 12:50 AM GMT 1.12 Mb/s 0.21 Mb/s 121 ms Canberra ~ 300 mi
6/9/2009 12:49 AM GMT 1.12 Mb/s 0.21 Mb/s 60 ms Melbourne < 50 mi
6/5/2009 12:00 PM GMT 1.12 Mb/s 0.21 Mb/s 64 ms Melbourne < 50 mi
6/5/2009 11:36 AM GMT 1.13 Mb/s 0.21 Mb/s 58 ms Melbourne < 50 mi
5/31/2009 8:12 AM GMT 1.45 Mb/s 0.27 Mb/s 45 ms Melbourne < 50 mi
3/25/2009 3:59 AM GMT 1.57 Mb/s 0.27 Mb/s 44 ms Melbourne < 50 mi
3/25/2009 3:07 AM GMT 0.63 Mb/s 0.25 Mb/s 42 ms Melbourne < 50 mi
12/13/2008 10:54 AM GMT 4.19 Mb/s 0.67 Mb/s 37 ms Melbourne < 50 mi
9/21/2008 8:16 AM GMT 3.98 Mb/s 0.62 Mb/s 155 ms Brisbane ~ 850 mi

Anybody have any clues what could cause this kind of long term fluctuation?

Cheers,
Warwick

JasonM

Re: Slow for months then fast for months now slow again

Post by JasonM » Wed Apr 21, 2010 3:27 pm

Can you please isolate the line and then contact support and ask they perform an isolated line test (that is, nothing attached to any socket in the premises at all)?

The current test is returning abnormal results, and I can see back in September 2009, similar results. No fault cases have been created though.

Dionysus
Posts: 14
Joined: Wed Apr 09, 2008 11:14 am
Location: Melbourne

Re: Slow for months then fast for months now slow again

Post by Dionysus » Thu Apr 22, 2010 3:17 pm

Thanks Jason,
I've followed this up with support and have found that if I plug my old Speadstream 4200 back in and do a speed test I get:

Image

which isn't as fast as I was getting a week ago but it's a lot faster than currently with the Billion 7404VNPX that I've been using since January. Here's the Billion plugged in again while writing this:

Image

Both modems were plugged directly into the line with no filter and connected to the computer with the same ethernet connection. The speed is currently about twice as fast with the old Speedstream.

Anybody have any thoughts about why this might be? The Billion was doing fine up until last week with speeds typically around 4-5 Mb/s.

btw, my ticket number is 2631491 in case that's useful to anyone.
Warwick

Dionysus
Posts: 14
Joined: Wed Apr 09, 2008 11:14 am
Location: Melbourne

Re: Slow for months then fast for months now slow again

Post by Dionysus » Thu Apr 22, 2010 3:21 pm

Billion modem ADSL status page (in case it means something to somebody):

DSP Firmware Version E.25.41.55 A
Connected true
Operational Mode READSL2
Annex Type AnnexL
Upstream 317000
Downstream 1162600
Elapsed Time 0 day 0 hr 0 min 34 sec
SNR Margin(Upstream) 13.0 dB
SNR Margin(Downstream) 12.10 dB
Line Attenuation(Upstream) 43.0 dB
Line Attenuation(Downstream) 42.0 dB
CRC Errors(Upstream) 0
CRC Errors(Downstream) 0
Latency(Upstream) Interleave
Latency(Downstream) Interleave

sable
Posts: 651
Joined: Tue Jan 20, 2004 9:28 am
Location: NSW

Re: Slow for months then fast for months now slow again

Post by sable » Thu Apr 22, 2010 3:44 pm

What version of firmware are you running (that reported in the stats looks strange)

Latest version issued 20.4.10 is 6.01 and is available here http://au.billion.com/product/voip/fd_v ... 04vnpx.php

Always a good idea to have the latest.

Dionysus
Posts: 14
Joined: Wed Apr 09, 2008 11:14 am
Location: Melbourne

Re: Slow for months then fast for months now slow again

Post by Dionysus » Thu Apr 22, 2010 4:26 pm

Thanks Sable.
Firmware is 5.53.s6.b1. I'll update it but still seems unlikely to be the cause as it was totally fine on the same firmware a week ago. Still, always good to have the latest.

Dionysus
Posts: 14
Joined: Wed Apr 09, 2008 11:14 am
Location: Melbourne

Re: Slow for months then fast for months now slow again

Post by Dionysus » Fri Apr 23, 2010 4:22 pm

I've updated the firmware to the latest and changed the cables and still getting the same results - about 1/4 the speed it was 10 days ago.

terrox
Posts: 141
Joined: Wed Apr 23, 2008 10:00 am
Location: MAYF exchange Hunter Region NSW

Re: Slow for months then fast for months now slow again

Post by terrox » Mon Apr 26, 2010 11:36 am

It's just your neighbours on the exchange downloading a lot. I don't know why that isn't the first assumption here, exetel has a very small wiggle room with bandwidth and a LOT of heavy users. It is very easy for a few people to clog a region in my experience.

CoreyPlover
Volunteer Site Admin
Posts: 5922
Joined: Sat Nov 04, 2006 2:24 pm
Location: Melbourne, VIC

Re: Slow for months then fast for months now slow again

Post by CoreyPlover » Tue Apr 27, 2010 1:16 pm

terrox wrote:It's just your neighbours on the exchange downloading a lot. I don't know why that isn't the first assumption here, exetel has a very small wiggle room with bandwidth and a LOT of heavy users. It is very easy for a few people to clog a region in my experience.
I don't think that is the cause here.

Dionysus, you are syncing at READSL modulation when it should be ADSL2+ and only getting 1.1Mbps *sync* speed. If the issue was general congestion, you'd be syncing properly while experiencing slow speeds. Does the Speedstream also show a low downstream? If so, I suggest you log a fault with Exetel (or reply to a previous ticket) and point out the low downstream sync of both modems.
I am a volunteer moderator and not an Exetel staff member. As with all forum posts, mine do not constitute any "official" Exetel position. Support tickets may be logged via https://helpdesk.exetel.com.au or residentialsupport@exetel.com.au

Dionysus
Posts: 14
Joined: Wed Apr 09, 2008 11:14 am
Location: Melbourne

Re: Slow for months then fast for months now slow again

Post by Dionysus » Wed Apr 28, 2010 4:40 pm

CoreyPlover wrote:Dionysus, you are syncing at READSL modulation when it should be ADSL2+ and only getting 1.1Mbps *sync* speed. If the issue was general congestion, you'd be syncing properly while experiencing slow speeds. Does the Speedstream also show a low downstream? If so, I suggest you log a fault with Exetel (or reply to a previous ticket) and point out the low downstream sync of both modems.
Thanks Corey,
Here are the sync speeds from the speedstream. They're a bit faster, as is the download speed, but they're still pretty slow aren't they? I have a fault logged with Exetel and they're working on it but no luck yet.

ATU-C Current Tx Rate (bits/sec): 2048000
ATU-R Current Tx Rate (bits/sec): 416000

CoreyPlover
Volunteer Site Admin
Posts: 5922
Joined: Sat Nov 04, 2006 2:24 pm
Location: Melbourne, VIC

Re: Slow for months then fast for months now slow again

Post by CoreyPlover » Wed Apr 28, 2010 5:05 pm

Dionysus wrote:They're a bit faster, as is the download speed, but they're still pretty slow aren't they?
Yes. Especially if you are still getting READSL. You should be getting an "ADSL2+" operational mode. See what Exetel support say (make sure you respond to any automatically generated responses to keep your ticket open)
I am a volunteer moderator and not an Exetel staff member. As with all forum posts, mine do not constitute any "official" Exetel position. Support tickets may be logged via https://helpdesk.exetel.com.au or residentialsupport@exetel.com.au

JasonM

Re: Slow for months then fast for months now slow again

Post by JasonM » Thu Apr 29, 2010 11:02 am

The tech went out and fixed some cabling issues.
We need to know if you are seeing improvements now?

Dionysus
Posts: 14
Joined: Wed Apr 09, 2008 11:14 am
Location: Melbourne

Re: Slow for months then fast for months now slow again

Post by Dionysus » Mon May 03, 2010 12:33 pm

Jason,
Yes, the tech came out and fixed a few problems and speeds are back to normal now, between 4 and 6 Mb/s.

Thanks very much for sorting all this out and getting a tech here so quickly after eliminating the other possiblities. Greatly appreciated.

Warwick

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