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Intermittent drop outs, MS Teams, Twitch, Discord, VPN

radiokid
Tuning in

Hi

My Virgin connection seems to be "glitching" for want of a better word. It doesn't disconnect fully and the speed is fine but certain applications experience drop outs, for a few seconds.

Microsoft Teams calls will drop periodically, sometimes just freezing sometimes disconnecting

Twitch streams display rotating wheel indicating a buffering issue, happens regardless of stream being watched

Discord will randomly disconnect from voice chats, again only for a second or two.

VPN will loose connection then reconnect within a few seconds.

Online gaming can also be affected, although not very clear when this happens. Speed of connection is fine and downloading files is also fine. Watching Netflix/Youtube doesnt seem to be affected although I imagine they buffer the stream ahead of it being watched.

Let me know what kind of stats, monitoring I need to supply for any assistance that can be given.

Tom.

13 REPLIES 13

radiokid
Tuning in

My Broadband Ping - Virgin

legacy1
Alessandro Volta

are you in router mode?

Your BQM shows a problem 

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radiokid
Tuning in

No its in modem mode, should have said from the start.

legacy1
Alessandro Volta

Could be a faulty Ethernet port try changing to another port on the hub if the hub allows it.

What own router are you using? You may have to test with a PC to the hub in modem mode with another BQM to see if it drops.

You could run in router mode to test BQM to the hub not that I like to suggest that the problem is not likely your kit.

does the hub how T# timeouts?

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radiokid
Tuning in

Ok, but am I right in thinking that the regular packet loss as shown by the BQM graph is showing packet loss in my WAN connection and nothing to do with my LAN setup. Packet loss percentage seems to be around 5% mark at regular'ish intervals.

radiokid
Tuning in

Cable Modem StatusItem Status CommentsChannel Overview Downstream Upstream

Cable Modem Status
Online
DOCSIS 3.1
Primary downstream channel
Locked
SC-QAM
DOCSIS 3.0 channels
32
5
DOCSIS 3.1 channels
1
1

3.0 Downstream channels

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

113875000010.840.4QAM2561
333947500009.740.4QAM25633
214675000010.840.4QAM2562
416275000010.340.4QAM2564
517075000010.140.4QAM2565
315475000010.740.4QAM2563
36418750000938.6QAM25636
81947500001040.4QAM2568
92027500009.840.9QAM2569
374267500009.438.6QAM25637
61787500001040.4QAM2566
122267500009.840.4QAM25612
132347500009.639QAM25613
718675000010.140.9QAM2567
404507500009.839QAM25640
162587500009.738.6QAM25616
172667500009.740.4QAM25617
414587500009.840.4QAM25641
102107500009.940.4QAM25610
202907500008.739QAM25620
212987500008.839QAM25621
112187500009.740.4QAM25611
444827500008.940.4QAM25644
24322750000939QAM25624
142427500009.740.4QAM25614
45490750000939QAM25645
152507500009.439QAM25615
182747500009.339QAM25618
19282750000938.6QAM25619
223067500008.839QAM25622
485147500008.539QAM25648
233147500009.439QAM25623



 

radiokid
Tuning in

3.0 Downstream channels

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

1Locked40.36628700
33Locked40.36628700
2Locked40.36628700
4Locked40.36628700
5Locked40.36628700
3Locked40.36628700
36Locked38.60537700
8Locked40.36628700
9Locked40.94620900
37Locked38.60537700
6Locked40.36628700
12Locked40.36628700
13Locked38.98326100
7Locked40.94620900
40Locked38.98326100
16Locked38.60537700
17Locked40.36628700
41Locked40.36628700
10Locked40.36628700
20Locked38.98326100
21Locked38.98326100
11Locked40.36628700
44Locked40.36628700
24Locked38.98326100
14Locked40.36628700
45Locked38.98326100
15Locked38.98326100
18Locked38.98326100
19Locked38.60537700
22Locked38.98326100
48Locked38.98326100
23Locked38.98326100



3.1 Downstream channels

Channel Channel Width (MHz) FFT Type Number of Active Subcarriers Modulation (Active Profile) First Active Subcarrier (Hz)
159964K1840QAM4096759


3.1 Downstream channels

Channel ID Lock Status RxMER Data (dB) PLC Power (dBmV) Correcteds (Active Profile) Uncorrectables (Active Profile)
159Locked427.436838683090
 

radiokid
Tuning in

3.0 Upstream channels

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

13660000038.85120 KSym/secQAM643
22360000038.35120 KSym/secQAM645
33010000038.35120 KSym/secQAM644
44310000038.85120 KSym/secQAM642
54960000038.85120 KSym/secQAM641



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
610.033.22KQAM8


3.1 Upstream channels

Channel Channel Type Number of Active Subcarriers First Active Subcarrier (Hz) T3 Timeouts T4 Timeouts
6OFDMA20053.920

General Configuration

Network access
true
Maximum Number of CPEs
1
Baseline Privacy
true
DOCSIS Mode
3.1
Config file
54k;fg87dsfd;kfoA,.iyewrk



Primary Downstream Service Flow

SFID
5132
Max Traffic Rate
1200000450
Max Traffic Burst
42600
Min Traffic Rate
0



Primary Upstream Service Flow

SFID
5131
Max Traffic Rate
110000274
Max Traffic Burst
42600
Min Traffic Rate
0
Max Concatenated Burst
42600
Scheduling Type
bestEffort

Network Log

Time Priority Description
Fri 23/02/2024
03:36:46
6US profile assignment change. US Chan ID: 6; Previous Profile: 12; New Profile: .;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Fri 23/02/2024
02:11:36
3No Ranging Response received - T3 time-out;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Thu 22/02/2024
21:56:36
6US profile assignment change. US Chan ID: 6; Previous Profile: 12; New Profile: .;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Thu 22/02/2024
21:56:36
5DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Thu 22/02/2024
19:26:34
6US profile assignment change. US Chan ID: 6; Previous Profile: ; New Profile: 11.;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Thu 22/02/2024
19:26:34
5DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Thu 22/02/2024
18:10:37
6DHCP Renew - lease parameters tftp file-cmreg-vmdg640-bbt076-b.cm modified;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Thu 22/02/2024
18:10:37
4DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Thu 22/02/2024
06:26:14
6US profile assignment change. US Chan ID: 6; Previous Profile: 12; New Profile: .;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Thu 22/02/2024
06:26:14
5DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Wed 21/02/2024
18:55:57
6US profile assignment change. US Chan ID: 6; Previous Profile: ; New Profile: 12.;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Wed 21/02/2024
18:38:58
3No Ranging Response received - T3 time-out;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Wed 21/02/2024
17:26:05
6US profile assignment change. US Chan ID: 6; Previous Profile: 11; New Profile: 12.;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Wed 21/02/2024
17:26:05
5DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Wed 21/02/2024
16:51:44
3No Ranging Response received - T3 time-out;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Tue 20/02/2024
23:25:52
6US profile assignment change. US Chan ID: 6; Previous Profile: 11; New Profile: 12.;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Tue 20/02/2024
23:25:52
5DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Tue 20/02/2024
15:55:37
6US profile assignment change. US Chan ID: 6; Previous Profile: 12; New Profile: .;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Tue 20/02/2024
15:55:37
5DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;

Client62
Hero

The 3.0 DOCSIS Downstream power levels are very high to too high. 

Has 6 dB or even a 10 dB attenuator been removed from the feed to the VM Hub ?