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hammic
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Slow upload speed (10Mbps out of 20Mbps)

For the last few nights I have experienced slow upload speeds.  I first noticed this when gaming, so performed a speed test which is when I noticed the 10Mbps upload speed - I am on the 200Mbps package and normally see slightly over 20Mbps upload speeds from speed tests.

Phoned up support tonight, who told me to reboot the modem, put the modem mode, then finally pinhole reset it - all of which did nothing to improve the upload speed.

I repeated the test on my mobile phone, several wired desktop computers and a laptop - the upload speed is consistent, regardless of device or connection.

I did notice that my upstream power levels for all four channels seem high - 48.3 - 48.8dBmv.  I highlighted this to the advisor on the phone, but I might as well have been talking to a brick wall as he seemed to think that both the power levels and upload speeds were perfect.

 

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hammic
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Re: Slow upload speed (10Mbps out of 20Mbps)

 Downstream bonded channels

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID

12590000000.538256 qam16
2251000000-0.237256 qam15
32670000000.238256 qam17
42750000000.238256 qam18
5283000000-0.538256 qam19
62910000000.438256 qam20
7299000000138256 qam21
83070000001.538256 qam22
93150000001.938256 qam23
103230000001.938256 qam24
113310000001.738256 qam25
12339000000238256 qam26
133470000001.938256 qam27
143550000002.238256 qam28
153630000001.938256 qam29
16371000000238256 qam30
173790000001.538256 qam31
183870000001.738256 qam32
19395000000138256 qam33
204030000000.538256 qam34
21411000000-0.237256 qam35
22419000000-0.738256 qam36
23523000000-0.438256 qam37
24531000000038256 qam38



Downstream bonded channels

Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors

1Locked38.678271804
2Locked37.649293539
3Locked38.63614231
4Locked38.620691
5Locked38.6191511
6Locked38.93370
7Locked38.63304
8Locked38.62130
9Locked38.62070
10Locked38.917718
11Locked38.919013
12Locked38.61970
13Locked38.61920
14Locked38.6150326
15Locked38.91600
16Locked38.91370
17Locked38.913612
18Locked38.61520
19Locked38.61710
20Locked38.61740
21Locked37.61650
22Locked38.61660
23Locked38.61210
24Locked38.624040

 

Upstream bonded channels

Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID

12580000048.8512032 qam6
24620000048.8512064 qam3
33940000048.5512032 qam4
43260000048.3512032 qam5



Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1ATDMA0000
2ATDMA0000
3ATDMA0000
4ATDMA0000

 

General Configuration

Network access
Allowed
Maximum Number of CPEs
1
Baseline Privacy
Enabled
DOCSIS Mode
Docsis30
Config file
cmreg-vmdg505-bbt060-b.cm



Primary Downstream Service Flow

SFID319638
Max Traffic Rate230000061
Max Traffic Burst42600
Min Traffic Rate0



Primary Upstream Service Flow

SFID319637
Max Traffic Rate22000061
Max Traffic Burst42600
Min Traffic Rate0
Max Concatenated Burst42600
Scheduling Type

BestEffort

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Laurie_C
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Re: Slow upload speed (10Mbps out of 20Mbps)

Hi hammic,

 

Thanks for getting in touch, and a very warm welcome back to the Community Forum! I am sorry that you're having some problems with slow speeds.

 

I've been able to locate your account using your Forum Details, and I'm afraid that I can't see any issues from our end. Everything looks to be within specification, and there aren't any known issues or outages in your area. How are things looking at the moment? Are you still having problems?

 

Kind regards,

Laurie

Laurie_C
Forum Team
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hammic
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Re: Slow upload speed (10Mbps out of 20Mbps)

Hi Laurie_C,

I am experiencing the same issue tonight, roughly 10.7Mbps upload speed at best.  My suspicions are that this could be a utilisation problem in the area, or perhaps I'm being capped for some reason? I shall try and test every hour or so during the next few evenings and see roughly when the speed starts to decrease, if at all.

Failing this to be a utilisation or capping issue, what else would cause the slow upload speed across all devices regardless of connection?

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hammic
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Re: Slow upload speed (10Mbps out of 20Mbps)

Cable Modem StatusItem Status Comments

Acquired Downstream Channel (Hz)
259000000
Locked
Ranged Upstream Channel (Hz)
25800000
Locked
Provisioning State
Online

 

Downstream bonded channels

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID

12590000000.738256 qam16
2139000000438256 qam1
31470000003.538256 qam2
41550000003.538256 qam3
51630000003.538256 qam4
61710000003.538256 qam5
71790000003.238256 qam6
8187000000338256 qam7
91950000002.738256 qam8
102030000002.438256 qam9
11211000000238256 qam10
122190000001.738256 qam11
132270000001.538256 qam12
142350000000.938256 qam13
152430000000.538256 qam14
16251000000038256 qam15
172670000000.438256 qam17
182750000000.438256 qam18
19283000000-0.238256 qam19
202910000000.538256 qam20
212990000001.238256 qam21
223070000001.738256 qam22
23315000000238256 qam23
24323000000238256 qam24



Downstream bonded channels

Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors

1Locked38.6234126
2Locked38.96582562
3Locked38.93087174
4Locked38.63528126
5Locked38.6330458
6Locked38.683692
7Locked38.924336
8Locked38.919946
9Locked38.9308553
10Locked38.6687880
11Locked38.9640924
12Locked38.92810209
13Locked38.61397163
14Locked38.628425841
15Locked38.61077170
16Locked38.6390213
17Locked38.96810
18Locked38.94715758
19Locked38.647862525
20Locked38.6317833
21Locked38.626223
22Locked38.94660
23Locked38.9900
24Locked38.9620

 

Upstream bonded channels

Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID

12580000048.8512032 qam6
23940000048.5512032 qam4
34620000048.5512064 qam3
43260000048.3512032 qam5



Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1ATDMA0000
2ATDMA0000
3ATDMA0000
4ATDMA0000

 

General Configuration
Network access
Allowed
Maximum Number of CPEs
1
Baseline Privacy
Enabled
DOCSIS Mode
Docsis30
Config file
cmreg-vmdg505-bbt060-b.cm


Primary Downstream Service Flow
SFID324624
Max Traffic Rate230000061
Max Traffic Burst42600
Min Traffic Rate0


Primary Upstream Service Flow
SFID324623
Max Traffic Rate22000061
Max Traffic Burst42600
Min Traffic Rate0
Max Concatenated Burst42600
Scheduling TypeBestEffort
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hammic
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Re: Slow upload speed (10Mbps out of 20Mbps)

So last night at about 7pm I lost my internet and the SuperHub 3 restarted itself.  Frustrated and convinced that this is related to my high upstream power levels, I contacted support.  After speaking for 20 minutes, the line conveniently disconnected.  I rang retentions who again put me through to tech support, who then eventually arranged an engineer's appointment for me on Monday.

I want the engineer to inspect the line and levels and tell me if they are in spec or not.  If so, then why am I getting slow upload speeds every day after around 7:30pm? My own suspicion is utilisation, but until the power levels are sorted I won't be convinced.

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Andrew-G
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Message 7 of 28
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Re: Slow upload speed (10Mbps out of 20Mbps)

Downstream errors and erratic upstream modulation suggest a line quality problem rather than over-utilisation.  Upstream power levels aren't at values from which we can draw any conclusions.

If you want to check for over-utilisation, then setup a BQM over at https://www.thinkbroadband.com/broadband/monitoring/quality that'll show what's going on with your VM connection.  Post a LINK to a LIVE, SHARED graph here and we'll see what's happening (so no screenshots, and not the address link to your logged in view).  Usually needs to run for 24 hours before we can draw reasonable conclusions, but the live graph will continuously update so you can post the link immediately.

Ayisha_B
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Re: Slow upload speed (10Mbps out of 20Mbps)

Hi @hammic

 

Thanks for the update. The technician will be able to look into this for you and hopefully get it sorted.

 

Let us know how the visit goes. 

 

 

Ayisha_B
Forum Team



New around here? To find out more about the Community check out our Getting Started guide


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hammic
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Re: Slow upload speed (10Mbps out of 20Mbps)

With the engineer agreeing with me that my upstream signal levels were borderline and that any fluctuation might have been enough to knock my signals out of spec and briefly take me offline.  With some tweaks and/or moving my cable around in the street cabinet, my upstream levels are more satisfactory and my connection does indeed appear to be more stable.

Something that the technician has logged, is there are sometimes glitches maybe a couple times of day.  These might have knocked me offline, as we both agreed they were sometimes roughly the same time my SH3 rebooted of it's own accord.  I don't know whether anything will come of this, but at least it should now be logged.

Sadly my upload speeds are still roughly half at peak times, so this still remains a mystery.  This can and does affect my online gaming, so it's something I aim to have looked into and fixed.  How I go about this from here, I don't quite know.  I'd appreciate any pointers in this regard.

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Tom_F
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Re: Slow upload speed (10Mbps out of 20Mbps)

Hi hammic, thanks for keeping us updated. 

 

Checking things today everything appears to be fine, I appreciate that's not been the case for you though. Can you please post up some recent hub stats so we can get a better idea of what's going on following the visit?

 

You can also set up a free “Broadband Quality Monitor” to continually monitor the state of your connection and record any network dropouts. It does it 24/7 and it keeps a visual record of any/all of your network issues https://www.thinkbroadband.com/broadband/monitoring/quality

 

Tom

 

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