Menu
Reply
SteveAustin
  • 4
  • 0
  • 0
Joining in
480 Views
Message 1 of 7
Flag for a moderator

Significantly Reduced Download Speeds after 7:30AM

Hi all;

Thanks in advance for any responses. I've tried to include all diagnostic data requested in similar threads, I'll respond ASAP to add anything I've missed.

Follow-up post(s) to include frequently requested hub status / logs.

Area Reference - 30

Broadband Package - M100

Issue Summary

Since Wednesday, 1st September 2021 we've experienced much slower download speeds than we normally receive. Before this, with a wired connection, we'd receive anywhere between 80-100 Mbps download at all times of the day.

- Download speeds are reduced across the board. Our new "peak" is speeds of between 40-66Mbps Down.

- This peak is only available between sometime after midnight and approximately 7:30AM

- Once 7:30AM nears - download speeds are reduced further to 2-4Mbps. This range is then maintained until gone midnight.

- This cycle has repeated itself for 6-days straight.

Throughout this, our Upload speeds have remained unchanged, averaging around the advertised 10mbps for our particular package.

Relevant points of note:

- Hub 3.0. Rebooted/ reset numerous times. Hub & device left off completely for 30-mins.

- Testing whilst connected by a Cat6 ethernet cable, directly from desktop to Hub. I've also since replaced this ethernet cable with a new Cat8 cable from a trusted brand via Amazon.

- All cables checked and confirmed to be securely connected. As far as I can tell everything looks in good condition, including splitter & coaxial.

- Speed tests ran on 3 different devices. Speed test ran whilst in safe mode. Speed test all additionally tested via both Wi-Fi & a Powerline adapter. All scenarios share the same pattern of reduced speeds.

- Tried connecting to all 4 ports on Hub 3.0. Same patterns regardless of which port is used.

- No changes to device/ hub setup, no increase in connected devices. Regularly average 5 connected devices, with only one of these devices being what I'd consider as a 'heavy' user.

- Checked 'local status' and no issues have been reported.

- Virgin Media customer for over a decade and this is the only prolonged internet issue I can recall, other than scheduled infrastructure maintenance. 

Broadband Quality Monitor over last 24 hours (packet losses reflect when the hub was switched off)

blfHwVx

Speedtest.net download speed patterns over the last 3 days:

a7RJBDt

Thanks!

0 Kudos
Reply
SteveAustin
  • 4
  • 0
  • 0
Joining in
478 Views
Message 2 of 7
Flag for a moderator

Re: Significantly Reduced Download Speeds after 7:30AM

Cable Modem StatusItem Status Comments

Acquired Downstream Channel (Hz)
331000000
Locked
Ranged Upstream Channel (Hz)
60299976
Locked
Provisioning State
Online
 
Downstream bonded channelsChannel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID
1331000000340256 qam25
22030000004.538256 qam9
32110000004.838256 qam10
42190000004.338256 qam11
52270000004.340256 qam12
62350000004.340256 qam13
72430000004.138256 qam14
82510000003.738256 qam15
92590000003.938256 qam16
10267000000438256 qam17
112750000004.140256 qam18
122830000003.740256 qam19
132910000003.538256 qam20
14299000000438256 qam21
15307000000440256 qam22
163150000003.740256 qam23
17323000000338256 qam24
183390000002.738256 qam26
193470000002.738256 qam27
203550000002.238256 qam28
21363000000240256 qam29
223710000001.940256 qam30
23379000000238256 qam31
243870000001.738256 qam32


Downstream bonded channelsChannel Locked Status RxMER (dB) Pre RS Errors Post RS Errors
1Locked40.300
2Locked38.950
3Locked38.650
4Locked38.940
5Locked40.370
6Locked40.950
7Locked38.940
8Locked38.950
9Locked38.960
10Locked38.670
11Locked40.950
12Locked40.370
13Locked38.960
14Locked38.950
15Locked40.360
16Locked40.340
17Locked38.950
18Locked38.940
19Locked38.960
20Locked38.940
21Locked40.360
22Locked40.350
23Locked38.950
24Locked38.960

 

Upstream bonded channelsChannel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID
16029997643.8512064 qam1
23940000041.8512064 qam4
34620000242.3512064 qam3
45369998343.8512064 qam2

 

Upstream bonded channelsChannel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts
1ATDMA0010
2ATDMA0000
3ATDMA0000
4ATDMA0000

 

General Configuration
Network access
Allowed
Maximum Number of CPEs
1
Baseline Privacy
Enabled
DOCSIS Mode
Docsis30
Config file
834ncxv9873254k;fg87dsfd;



Primary Downstream Service Flow
SFID4272
Max Traffic Rate117000047
Max Traffic Burst42600
Min Traffic Rate0



Primary Upstream Service Flow
SFID4176
Max Traffic Rate10500047
Max Traffic Burst16320
Min Traffic Rate0
Max Concatenated Burst16320
Scheduling TypeBestEffort
0 Kudos
Reply
SteveAustin
  • 4
  • 0
  • 0
Joining in
468 Views
Message 3 of 7
Flag for a moderator

Re: Significantly Reduced Download Speeds after 7:30AM

Network Log

Time Priority Description

06/09/2021 07:45:46noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
   
01/01/1970 00:01:38criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
06/09/2021 05:40:19noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
   
04/09/2021 15:39:53noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
   
04/09/2021 15:39:26noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
01/01/1970 00:01:36criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
03/09/2021 13:21:21noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
   
03/09/2021 13:20:57noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
   
03/09/2021 13:12:14noticeUnit has been restored to factory defaults from a software issued command;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
03/09/2021 07:25:51noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
   
03/09/2021 07:25:35noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
   
01/01/1970 00:01:38criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/09/2021 15:08:49noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
0 Kudos
Reply
lotharmat
  • 3.85K
  • 259
  • 724
Community elder
466 Views
Message 4 of 7
Flag for a moderator

Re: Significantly Reduced Download Speeds after 7:30AM

Stats look A-OK - the BQM however..............

Damn....................

Major problems!

VM staff will be along shortly to advise - Maybe one of the VIPs can flag for a member of staff - I don't think that a call to CS will do anything as the stats look great!



------------------------------------------------------------------
Hub 3 - Modem Mode - TP-Link Archer C7

SteveAustin
  • 4
  • 0
  • 0
Joining in
404 Views
Message 5 of 7
Flag for a moderator

Re: Significantly Reduced Download Speeds after 7:30AM

Happy coincidence but after running a speed test at 2PM, it looks like whatever issue was has (at least temporarily) been resolved after 6-days out in the desert. Seeing 90Mbps down which is good enough for me - Can park this thread for the time being, and hopefully I won't have to revisit!

For anybody following this thread after the fact, unfortunately I'm none the wiser as to what the issue was, and hadn't made any changes (other than rebooting the Hub every so often) to alleviate the problem. If I uncover anything, I'll add to this thread.

Will keep the BQM running as it may be useful to compare/ contrast if needed.

0 Kudos
Reply
lotharmat
  • 3.85K
  • 259
  • 724
Community elder
398 Views
Message 6 of 7
Flag for a moderator

Re: Significantly Reduced Download Speeds after 7:30AM

Thanks for letting us know!

Deffo keep the BQM running - Monitor it periodically in case your WAN IP changes - always worth having evidence to back up any drops!



------------------------------------------------------------------
Hub 3 - Modem Mode - TP-Link Archer C7

0 Kudos
Reply
Martin_N
  • 8.06K
  • 339
  • 495
Forum Team
Forum Team
332 Views
Message 7 of 7
Flag for a moderator

Re: Significantly Reduced Download Speeds after 7:30AM

Hi SteveAustin,

 

Thank you for your post and welcome to the community. 

 

I'm very sorry to hear about the issues you were having with your broadband issue.

 

I am happy to hear it all seems to be working now though. 

 

I have locate your account and taken a look on our side and nothing seems to be showing that could be affecting this. 

 

Please do let us know if these any change on this. 

 

^Martin

0 Kudos
Reply