poor speeds on 20 meg [Archive]

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gadgetaddict

01-06-2010, 21:19

hi all i am having poor download speeds on my 20 meg connection but upload is always fine,it always seems to be after about six a cloak in the evening my speeds drop,and no i am not downloading

Date 01/06/10 20:18:16
Speed Down 2254.61 Kbps ( 2.2 Mbps )
Speed Up 575.28 Kbps ( 0.6 Mbps )
Port 8095
Server speedtest1.thinkbroadband.com

now i recently had problems a few weeks ago when virgin shut off some modems off of there systems and had the tech guys out twice to resolve this prob i did have the 256 modem but now i have the 2100 one{this is the newest one i believe},,before all this happenened i never had any broadband issues with speed in my five years with virgin/ntl

here is my cable modem logs
Downstream Channel
The data shown in the table below provides information about the signal coming from the network to your cable modem.

Downstream Status
Operational
Channel ID
6
Downstream Frequency
402750000 Hz
Modulation
64QAM
Bit Rate
20480000 bits/sec
Power Level
4.9 dBmV
Signal to Noise Ratio
39.0 dB

Upstream Channel
The data shown in the table below provides information about the signal being transmitted to the network from your cable modem.

Upstream Status
Operational
Channel ID
2
Upstream Frequency
29200000 Hz
Modulation
QPSK
Symbol Rate
768000 bits/sec
Power Level
38.0 dBmV

any help will be grateful thanks

---------- Post added at 20:29 ---------- Previous post was at 20:26 ----------

here is my log of modem

Time Level Description
Time Not Established Critical (3) DHCP WARNING - Non-critical field invalid in response.
Time Not Established Critical (3) Received Response to Broadcast Maintenance Request, But no Un...
Time Not Established Critical (3) No Ranging Response received - T3 time-out
Fri May 28 14:44:21 2010 Critical (3) Resetting the cable modem due to docsDevResetNow
Time Not Established Critical (3) DHCP WARNING - Non-critical field invalid in response.
Time Not Established Critical (3) No Ranging Response received - T3 time-out
Time Not Established Critical (3) DHCP WARNING - Non-critical field invalid in response.
Time Not Established Critical (3) No Ranging Response received - T3 time-out
Time Not Established Critical (3) DHCP WARNING - Non-critical field invalid in response.
Time Not Established Critical (3) Received Response to Broadcast Maintenance Request, But no Un...
Time Not Established Critical (3) Started Unicast Maintenance Ranging - No Response received - ...
Time Not Established Critical (3) Started Unicast Maintenance Ranging - No Response received - ...
Time Not Established Critical (3) DHCP WARNING - Non-critical field invalid in response.
Time Not Established Critical (3) No Ranging Response received - T3 time-out
Time Not Established Critical (3) DHCP WARNING - Non-critical field invalid in response.
Time Not Established Critical (3) No Ranging Response received - T3 time-out
Time Not Established Critical (3) DHCP WARNING - Non-critical field invalid in response.
Time Not Established Critical (3) Received Response to Broadcast Maintenance Request, But no Un...
Time Not Established Critical (3) No Ranging Response received - T3 time-out
Time Not Established Critical (3) Resetting the cable modem due to docsDevResetNow
Time Not Established Critical (3) DHCP WARNING - Non-critical field invalid in response.
Time Not Established Critical (3) No Ranging Response received - T3 time-out
Time Not Established Critical (3) DHCP WARNING - Non-critical field invalid in response.
Time Not Established Critical (3) No Ranging Response received - T3 time-out
Time Not Established Critical (3) SYNC Timing Synchronization failure - Failed to acquire FEC f...
Time Not Established Critical (3) DHCP WARNING - Non-critical field invalid in response.
Time Not Established Critical (3) No Ranging Response received - T3 time-out
Time Not Established Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/Q...
Time Not Established Critical (3) Resetting the cable modem due to console command

---------- Post added at 20:30 ---------- Previous post was at 20:29 ----------

another test

Date 01/06/10 20:29:07
Speed Down 1433.52 Kbps ( 1.4 Mbps )
Speed Up 616.31 Kbps ( 0.6 Mbps )
Port 8095
Server speedtest1.thinkbroadband.com

---------- Post added at 20:55 ---------- Previous post was at 20:30 ----------

this really is pants service

Speed Test Results
Date 01/06/10 20:54:09
Speed Down 1162.70 Kbps ( 1.1 Mbps )
Speed Up 659.94 Kbps ( 0.6 Mbps )
Port 8095
Server speedtest1.thinkbroadband.com

---------- Post added at 21:19 ---------- Previous post was at 20:55 ----------

getting better

Speed Test Results
Date 01/06/10 21:18:48
Speed Down 4576.38 Kbps ( 4.5 Mbps )
Speed Up 642.73 Kbps ( 0.6 Mbps )
Port 8095
Server speedtest1.thinkbroadband.com

monkey2468

01-06-2010, 21:29

Try speedtest.net and use the London server and post the results.

gadgetaddict

01-06-2010, 21:48

cheers monkey

https://www.cableforum.co.uk/images/local/2010/06/48.png (http://www.speedtest.net)

---------- Post added at 21:48 ---------- Previous post was at 21:40 ----------

this one is from the milton keynes server which is near me,,better pings thou

https://www.cableforum.co.uk/images/local/2010/06/49.png (http://www.speedtest.net)

vanman

01-06-2010, 22:11

is it this one http://www.cisco.com/web/consumer/support/modem_DPC2100.html#~features

gadgetaddict

01-06-2010, 22:30

yes it is thanks

---------- Post added at 22:30 ---------- Previous post was at 22:28 ----------

just done another test before turning in

https://www.cableforum.co.uk/images/local/2010/06/47.png (http://www.speedtest.net)

vanman

01-06-2010, 22:59

JayAy

01-06-2010, 23:16

Not sure how reliable speedtest.net is - this with the London server on a 20M connection...

https://www.cableforum.co.uk/images/local/2010/06/46.png (http://www.speedtest.net)

telfordcable

02-06-2010, 02:18

Not sure how reliable speedtest.net is - this with the London server on a 20M connection...

https://www.cableforum.co.uk/images/local/2010/06/46.png (http://www.speedtest.net)

WTF .... that was 200 Meg trial you bugger !

IGR

02-06-2010, 09:31

gadgetaddict

02-06-2010, 11:34

should be
https://www.cableforum.co.uk/images/local/2010/06/44.png[IMG]http://www.cableforum.co.uk/board/%3Ca%20href=http://www.speedtest.net%20target=_blank%3Ehttps://www.cableforum.co.uk/images/local/2010/06/44.png

yes thanks it should be,just done test now

https://www.cableforum.co.uk/images/local/2010/06/45.png (http://www.speedtest.net)

---------- Post added at 11:34 ---------- Previous post was at 11:33 ----------

WTF .... that was 200 Meg trial you bugger !

lucky sod :)

---------- Post added at 11:34 ---------- Previous post was at 11:34 ----------

:) Hi I had the same sort of problems with low speeds " on 20Mb " over several months and tried everything I could think of. Finally started to wonder about upgrading to 50Mb but if I was in an oversubscribed area would that make a difference? Anyway after a reply from an email sent to the support team their reply "due to what we call high utilisation" etc. etc. and nice offers of ring us and we'll sort out some compensation, I switched off the modem and router again and left it for an hour or so. On turning it back on I noticed a different I.P. address that's about a fortnight ago and speeds since are running at expected rates 18/19+ down and 70+ up. Is it just a coincidence or did the change of I.P. have any influence on things? and if so is there anyway to change your I.P. address other than switch off and hope. :confused:

will give that a try off out for a few hours so will unplug see it it helps

jimexbox

02-06-2010, 12:49

My 10mb is looking fast...

https://www.cableforum.co.uk/images/local/2010/06/43.png

:erm:

---------- Post added at 12:49 ---------- Previous post was at 12:45 ----------

http://www.broadbandspeedchecker.co.uk/bimages/23527202.jpg (http://www.broadbandspeedchecker.co.uk)

That's more accurate.

apatia77

02-06-2010, 16:12

speedtest.net is not accurate at all, every single time I check my 20mb connection i get between 50-200mb speed, only upload is accurate. I think it doesn't work well for virgin cable broadband for some reason.

JayAy

02-06-2010, 23:57

WTF .... that was 200 Meg trial you bugger !

I wish. I don't think my ntl250 modem is capable of such feats. I'd be Vdisappointed (TM and (c) ) if VM only provided .75 upload to accompany a 200M download service too.

A more sensible (accurate I don't know) figure from Broadband SpeedChecker looks to be in the right ballpark.
Whilst SpeedTest has my 200M trial pegged to a measly 100M now! https://www.cableforum.co.uk/images/local/2010/06/158.jpghttps://www.cableforum.co.uk/images/local/2010/06/41.png (http://www.speedtest.net/)

---------- Post added at 23:57 ---------- Previous post was at 23:52 ----------

speedtest.net is not accurate at all, every single time I check my 20mb connection i get between 50-200mb speed, only upload is accurate. I think it doesn't work well for virgin cable broadband for some reason.

Do you connect straight to the cable modem or via a router? If the latter which one? I have Belkin Pre-N router (not using Wireless) that I suspect is a cause of several problems on my network - and is due for replacement when DrayTek manages to release it's Vigor 2130 series into the UK market.

Chrysalis

03-06-2010, 10:45

:) Hi I had the same sort of problems with low speeds " on 20Mb " over several months and tried everything I could think of. Finally started to wonder about upgrading to 50Mb but if I was in an oversubscribed area would that make a difference? Anyway after a reply from an email sent to the support team their reply "due to what we call high utilisation" etc. etc. and nice offers of ring us and we'll sort out some compensation, I switched off the modem and router again and left it for an hour or so. On turning it back on I noticed a different I.P. address that's about a fortnight ago and speeds since are running at expected rates 18/19+ down and 70+ up. Is it just a coincidence or did the change of I.P. have any influence on things? and if so is there anyway to change your I.P. address other than switch off and hope. :confused:

It could do if you currently on the legacy network.

I was moved to the overlay (50meg) network because of congestion and I went from dialup speeds to 20meg, upload is a bit shaky on tests but always performs fine on actual uploads.

Things to consider with the overlay network.

(a) it has much more downstream bandwidth, 4 channels vs 1 or 2 channels.
(b) it will probably have a lot less customers on it due to people tending to have the cheapest package (10 meg). So even tho it has less upstream channels I suspect in many cases the upstream bandwidth per customer allocates to a higher amount due to the lower level of subscription.

---------- Post added at 10:45 ---------- Previous post was at 10:42 ----------

speedtest.net is not accurate at all, every single time I check my 20mb connection i get between 50-200mb speed, only upload is accurate. I think it doesn't work well for virgin cable broadband for some reason.

seems to be browser dependent, I use IE8 for speedtests and is accurate for me.

If you getting silly high results then your browser is caching the data.

apatia77

03-06-2010, 17:27

i've been checking with FF, not sure if I ever done it in IE, will try and let you know

JayAy

03-06-2010, 22:40

i've been checking with FF, not sure if I ever done it in IE, will try and let you know

I have the same broad range of results with speedtest.net regardless of browser and version used on a Windows 7 64 bit OS - 32 bit browsers. However, I have stable and sensible download speed results from a Windows XP 64 bit OS machine.

footslog

06-06-2010, 20:12

(Apologies if this is blindingly obvious to the experts) I'm having similar - maybe worse? - problems with my 20mb connection. It has become so slow, it grinds to a halt trying to complete the download test from speedtest.net. I got download figures of about 268kb (that's not a typo) from broadbandspeedchecker. I'm plugging the modem directly into the PC at the moment to rule out any router problems.

My modem stats are below - I guess from reading the posts above the downstream/upstream power levels are out of range?

Thanks for any info/advice. BTW, my internet connection has just died completely so I had to type this into Notepad to paste into the forum later (assuming I can get back in). If I don't respond, it will be because I've lost the connection... again...:(

Cable Modem Information
Cable Modem : DOCSIS 1.0/1.1/2.0 Compliant
MAC Address : 00:14:XX:XX:XX:XX
Serial Number : 0014A4XXXXXXX
Boot Code Version : 1.1.2c
Software Version : 2.111.1002
Hardware Version : 1.9

Cable Modem Status
Item Status Comments
Acquire a Downstream Channel 299000000 Hz Locked
Connectivity State OK Operational

Boot State OK Operational

Cable Modem Downstream
Downstream Lock : Locked
Downstream Channel Id : 13
Downstream Frequency : 299000000 Hz
Downstream Modulation : QAM256
Downstream Symbol Rate : 6952 Ksym/sec
Downstream Interleave Depth : taps12Increment17
Downstream Receive Power Level : 9.0 dBmV
Downstream SNR : 29.6 dB

Cable Modem Upstream
Upstream Lock : Locked
Upstream Channel ID : 2
Upstream Frequency : 47400000 Hz
Upstream Modulation : QAM16
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 58.5 dBmV
Upstream Mini-Slot Size : 2

pip08456

06-06-2010, 23:17

I find this thread amuusing with all the comments so far. The London server at speedtest.net is pretty reliable. If you are getting the stupid results as have been posted then it is due to your browser cashe, try emptying it.

If you need to know if your power levels are correct, check the sticky here

http://www.cableforum.co.uk/board/12/26006-cable-modem-signal-levels.html

footslog

07-06-2010, 09:44

Thanks for that link Pip - I should have looked through the stickies first...

The only reason I tried the speed tests was because my connection has been getting slower and slower recently. From the discussions on the forum, I understand they can give misleading results, but I hadn't found anyone else reporting that the download test just gave up.

I tried downloading a 200mb file from vm's blueyonder games server - in order to test download speed - and was getting about 40-60kb...

Phoned VM this morning. They told me 'work is being done in my area' (Woking) which will be 'finished by 4pm this afternoon'. There's no mention of that on VM's website, but I'll try it again when I get home from work this evening.

footslog

07-06-2010, 19:23

Update: Just connected (having reset modem/router). Speedtest/broadbandchecker now showing 10-13mb, and downloads running at 1.9-2.2mbs. Happy :)

JayAy

07-06-2010, 21:25

If you are getting the stupid results as have been posted then it is due to your browser cashe, try emptying it.

Cleared the cache on Windows 7 IE8 - Same type of results as before
I also use Firefox portable - which does not have persistent cache - same sort of results as before.
I fond Speedtest.net to the London server stable and reliable on Windows XP with the same two browser versions, but not on Windows 7. So what blindingly obvious thing am I missing - amusing or not?

pip08456

07-06-2010, 21:58

That's a question I can't answer as I still run on XP. It could be a win7 thing but I suspect it has something to do with the browser cache in some way.

Hopefully another win7 user will come along and provide the solution.

JayAy

09-07-2010, 20:29

Finally found out why I've been getting such amazing speeds on speedtest.net - and it's not because I've been put on a special trial.

Turns out the issue was with one of the options in Kaspersky Internet Security 2010 - Web Anti-Virus which claims to scan http traffic for the presence of malicious and unwanted objects. I switched this off and hey presto! spot on the expected speed for my service from London server.