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C-28022317: 0.01 mbit upload bandwidth - West London

ErdemA
Tuning in

Hi,

It's been almost 5 days, I've been having connection drops and in between when the connection is up, my upload bandwidth is basically nothing with packet loss for outgoing traffic. 

This is my current speed test

ErdemA_0-1677679064108.png

I've tried checking for any local issues using the 0800 phone number, nothing came out of it. 

 

 

17 REPLIES 17

Client62
Hero

I'm don't doubt the service issue you feel here

But the Realspeed results are nonsense ( again not your fault ).   Hub shows Zero upstream bandwidth but minimal packet loss - this can't be right.

The Hub's stats for Upstream rate, Latency & Jitter are worse that those of the computer - the exact opposite is supposed to be true.

What does another speed test reveal ?  http://cloudtalk.speedtestcustom.com/

What do the Hub's Upstream network stats look like ?   copy / paste into the thread for a hand reading them

Thanks for the reply

Speed test result

ErdemA_0-1677681809122.png

Network stats;

ErdemA_1-1677682023564.png


3.0 Downstream channels

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID
21470000002.839QAM2562
11390000002.739QAM2561
3155000000340.4QAM2563
41630000002.939QAM2564
5171000000340.4QAM2565
61790000002.939QAM2566
71870000002.640.4QAM2567
81950000002.740.4QAM2568
92030000002.639QAM2569
102110000002.840.4QAM25610
112190000002.640.9QAM25611
122270000002.940.4QAM25612
132350000002.940.4QAM25613
142430000002.940.4QAM25614
152510000002.940.4QAM25615
162590000002.840.4QAM25616
172670000002.740.4QAM25617
182750000002.740.4QAM25618
192830000002.840.4QAM25619
202910000003.640.4QAM25620
212990000004.240.9QAM25621
223070000004.540.4QAM25622
233150000004.340.4QAM25623
24323000000440.4QAM25624
253310000004.240.4QAM25625
263390000004.440.9QAM25626
273470000004.640.4QAM25627
283550000004.540.9QAM25628
293630000004.940.9QAM25629
303710000004.740.9QAM25630
313790000004.540.9QAM25631


3.0 Downstream channels

Channel Lock Status RxMER (dB) Pre RS Errors Post RS Errors
2Locked38.98326100
1Locked38.98326100
3Locked40.36628700
4Locked38.98326100
5Locked40.36628700
6Locked38.98326100
7Locked40.36628700
8Locked40.36628700
9Locked38.98326100
10Locked40.36628700
11Locked40.94620900
12Locked40.36628700
13Locked40.36628700
14Locked40.36628700
15Locked40.36628700
16Locked40.36628700
17Locked40.36628700
18Locked40.36628700
19Locked40.36628700
20Locked40.36628700
21Locked40.94620900
22Locked40.36628700
23Locked40.36628700
24Locked40.36628700
25Locked40.36628700
26Locked40.94620900
27Locked40.36628700
28Locked40.94620900
29Locked40.94620900
30Locked40.94620900
31Locked40.94620900


3.1 Downstream channels

Channel Channel Width (MHz) FFT Type Number of Active Subcarriers Modulation (Active Profile) First Active Subcarrier (Hz)
33964K1840QAM4096392


3.1 Downstream channels

Channel ID Lock Status RxMER Data (dB) PLC Power (dBmV) Correcteds (Active Profile) Uncorrectables (Active Profile)
33Locked434.2317654480

 

 


For some reason upload didn't work and I hit to char limit

Posting the speed test result again with upstream stats

 

3.0 Upstream channels

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

13660000046.85120 KSym/secQAM323
23010000046.35120 KSym/secQAM324
34310000047.35120 KSym/secQAM322
44960000047.85120 KSym/secQAM321
52360000046.35120 KSym/secQAM329



3.0 Upstream channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1ATDMA0000
2ATDMA0000
3ATDMA0000
4ATDMA0000
5ATDMA0000



3.1 Upstream channels

Channel Channel Width (MHz) Power (dBmV) FFT Type Modulation
1010.843.52KQAM8


3.1 Upstream channels

Channel Channel Type Number of Active Subcarriers First Active Subcarrier (Hz) T3 Timeouts T4 Timeouts
10OFDMA22053.400

 

 

General Configuration

Network access
true
Maximum Number of CPEs
1
Baseline Privacy
true
DOCSIS Mode
3.1
Config file
cmreg-vmdg640-bbt078-b.cm



Primary Downstream Service Flow

SFID
79512
Max Traffic Rate
690000278
Max Traffic Burst
42600
Min Traffic Rate
0



Primary Upstream Service Flow

SFID
79511
Max Traffic Rate
44000278
Max Traffic Burst
42600
Min Traffic Rate
0
Max Concatenated Burst
42600
Scheduling Type
bestEffort

 

Speed test

ErdemA_0-1677682395623.png

 

Of course due to PII issues, screen shot without the IP ...

 

ErdemA_0-1677682702629.png

 

apj_uk
Dialled in

This is very similar to an issue that I and many other on this forum and indeed on social media are experiencing since virgin implemented a recent firmware update made to the Hub 4: https://community.virginmedia.com/t5/Speed/1Gig-Upload-speeds-dropped-from-52Mbps-to-10Mbps/td-p/526... 

Forum support are deliberately ignoring and not replying to any such low upload issue posts as they know there's a bigger issue here. Like you, I have checked the Virgin support status checker and the automated support phoneline and no local issues have been reported. Its shocking that Virgin leave customers with no support when things go wrong like this. I contacted the Broadband support phone line and they read from a script, told me they could find no fault, despite me alerting them that multiple SamKnows Realspeed tests clearly showing an issue between the router and their infrastructure (0.0mb upload) and were completely useless and offered no resolution or additional help...

The five 3.0 DOCSIS Upstream channels are all QAM 32, they have (noise) degraded from the normal QAM 64 mode.

Given the total lack of upstream bandwidth one might have imagined a far worse position.

Clearly the QAM 32 is a local noise issue but it does not explain why there is next to no upstream bandwidth from 5x 3.0 plus 1x 3.1 upstream channels.

I'm sure that you have called Customer Support to report this fault, if not you should.

If the folks next door have the same issue,perhaps they can call in the fault too.

A crazy question perhaps.

Does the Hub's   Check router status  >>>  Configuration tab >> Primary Upstream Service Flow > Max Traffic Rate have the correct value.

It is shown in bits / second so a value over 40,000,000 perhaps 44,000,000  would be expected for a 40Mb/s upstream service.

It seems to be showing somewhat an acceptable value

 

Primary Upstream Service Flow

SFID
79511
Max Traffic Rate
44000278
Max Traffic Burst
42600
Min Traffic Rate
0
Max Concatenated Burst
42600
Scheduling Type
bestEffort


@Client62 wrote:



I'm sure that you have called Customer Support to report this fault, if not you should.



Yes, a technician will be coming in tomorrow afternoon but I'm not hopeful of the outcome.