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parmi · ‎09-06-2024

A few days ago I started to have high packet loss, I have always noticed packet loss with Virgin Media, but lately it has become too high.

I'm using the Hub 5 in modem mode to which I connected a NanoPi R6S (8core@2.4GHz - 8GB RAM) to the 2.5Gbps port, configured to use SQM/fq_codel and DSCP packet (inbound and outbound), tested with Wireshark to double check and it works.

Obviously I have already tried restarting the modem and rouer.

The game packets are of UDP type, I'm playing Valorant which reports a high number of lost packets (2/3 packets every second), and I have the same problem with my multistream on Twitch and YouTube where I lose 40% of frames, packet loss is present even when I'm not streaming.

My upload speed test is lower than usual (90Mbps)

3.0 Downstream channels

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

1	331000000	6.5	41	QAM 256	25
2	139000000	6.5	41	QAM 256	1
3	147000000	6.3	41	QAM 256	2
4	155000000	6.3	41	QAM 256	3
5	163000000	6.3	41	QAM 256	4
6	171000000	6.1	41	QAM 256	5
7	179000000	6.3	41	QAM 256	6
8	187000000	6.3	42	QAM 256	7
9	195000000	6.5	41	QAM 256	8
10	203000000	5.7	41	QAM 256	9
11	211000000	3.7	40	QAM 256	10
12	219000000	6	41	QAM 256	11
13	227000000	6.2	41	QAM 256	12
14	235000000	6.3	41	QAM 256	13
15	243000000	6	41	QAM 256	14
16	251000000	6.1	41	QAM 256	15
17	259000000	6.1	41	QAM 256	16
18	267000000	6.2	41	QAM 256	17
19	275000000	6.3	41	QAM 256	18
20	283000000	6.2	41	QAM 256	19
21	291000000	6.5	41	QAM 256	20
22	299000000	6.5	41	QAM 256	21
23	307000000	6.7	41	QAM 256	22
24	315000000	6.8	42	QAM 256	23
25	323000000	6.6	41	QAM 256	24
26	339000000	6.3	41	QAM 256	26
27	347000000	6.4	41	QAM 256	27
28	355000000	6.2	41	QAM 256	28
29	363000000	6.5	41	QAM 256	29
30	371000000	6.7	41	QAM 256	30
31	379000000	6.7	41	QAM 256	31
32	387000000	6.8	42	QAM 256	32

3.0 Downstream channels

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

1	Locked	41
2	Locked	41
3	Locked	41
4	Locked	41
5	Locked	41
6	Locked	41
7	Locked	41
8	Locked	42
9	Locked	41
10	Locked	41
11	Locked	40
12	Locked	41
13	Locked	41
14	Locked	41
15	Locked	41
16	Locked	41
17	Locked	41
18	Locked	41
19	Locked	41
20	Locked	41
21	Locked	41
22	Locked	41
23	Locked	41
24	Locked	42
25	Locked	41
26	Locked	41
27	Locked	41
28	Locked	41
29	Locked	41
30	Locked	41
31	Locked	41
32	Locked	42

3.1 Downstream channels

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

159

94

4K

1840

QAM 4096

1108

3.1 Downstream channels

Channel ID Locked Status RxMER Data (dB) PLC Power (dBmV) Corrected errors (Active Profile) Uncorrectable errors (Active Profile)

159

Locked

42

7.5

12693655

0

3.0 Upstream channels

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

0	49600000	37.3	5120	QAM 64	9
1	43100000	37.3	5120	QAM 64	10
2	36600000	36.8	5120	QAM 64	11
3	30100000	36.3	5120	QAM 64	12
4	23600000	37	5120	QAM 64	13

3.0 Upstream channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

0	ATDMA	3	1
1	ATDMA	3	0
2	ATDMA	3	1
3	ATDMA	3	0
4	ATDMA	3	18

3.1 Upstream channels

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

14

10

31.0

2K

QAM 256

3.1 Upstream channels

Channel Channel Type Number of Active Subcarriers First Active Subcarrier (Hz) T3 Timeouts T4 Timeouts

14

OFDMA

200

74000000

0

Carley_S · ‎15-06-2024

Hi @parmi

Welcome back to the community forums

Sorry to hear you're having issues with your service at this time.

Checking the systems at our side, we can see that there is an outage raised for SNR (signal noise ratio) meaning there are disruptions and interferences which are affecting your services intermittently. Our apologies for the inconvenience this may cause. There is an estimated fix time of 17 June 2024 at 9:05am, these are estimated and can be resolved before or extended further if the issues needs time than previously estimated. Our teams are working to have this resolved as soon as possible for you.

Here to help 🙂
Virgin Media Forums Agent
Carley

See where this Helpful Answer was posted

parmi · ‎09-06-2024

Network Log

Time Priority Description

09-06-2024 16:02:31	notice	GUI Login Status - Login Success from LAN interface
09-06-2024 15:45:56	notice	GUI Login Status - Login Success from LAN interface
09-06-2024 15:43:42	critical	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=--:--:--:--:--:--;CMTS-MAC=--:--:--:--:--:--;CM-QOS=1.1;CM-VER=3.1;
09-06-2024 15:36:04	warning	DBC-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;
09-06-2024 15:36:04	notice	US profile assignment change. US Chan ID: 14; Previous Profile: 12 13; New Profile: 13.;CM-MAC=--:--:--:--:--:--;CMTS-MAC=--:--:--:--:--:--;CM-QOS=1.1;CM-VER=3.1;
09-06-2024 15:35:40	notice	US profile assignment change. US Chan ID: 14; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=--:--:--:--:--:--;CMTS-MAC=--:--:--:--:--:--;CM-QOS=1.1;CM-VER=3.1;
09-06-2024 15:35:40	warning	DBC-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;
09-06-2024 15:34:56	warning	TCS Partial Service;CM-MAC=--:--:--:--:--:--;CMTS-MAC=--:--:--:--:--:--;CM-QOS=1.1;CM-VER=3.1;
09-06-2024 15:34:56	critical	Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=--:--:--:--:--:--;CMTS-MAC=--:--:--:--:--:--;CM-QOS=1.1;CM-VER=3.1;
09-06-2024 15:34:39	critical	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=--:--:--:--:--:--;CMTS-MAC=--:--:--:--:--:--;CM-QOS=1.1;CM-VER=3.1;
09-06-2024 15:34:37	warning	DBC-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;
09-06-2024 15:34:37	notice	US profile assignment change. US Chan ID: 14; Previous Profile: 13; New Profile: 11 13.;CM-MAC=--:--:--:--:--:74;CMTS-MAC=--:--:--:--:--:--;CM-QOS=1.1;CM-VER=3.1;
09-06-2024 15:34:34	warning	TCS Partial Service;CM-MAC=--:--:--:--:--:74;CMTS-MAC=--:--:--:--:--:--;CM-QOS=1.1;CM-VER=3.1;
09-06-2024 15:34:34	critical	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=--:--:--:--:--:--;CMTS-MAC=--:--:--:--:--:--;CM-QOS=1.1;CM-VER=3.1;
09-06-2024 15:34:34	notice	REGISTRATION COMPLETE - Waiting for Operational status
09-06-2024 15:34:24	warning	REG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=--:--:--:--:--:--;CMTS-MAC=--:--:--:--:--:--;CM-QOS=1.1;CM-VER=3.1;
09-06-2024 15:34:19	notice	DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=--:--:--:--:--:--;CMTS-MAC=--:--:--:--:--:--;CM-QOS=1.1;CM-VER=3.1;
09-06-2024 15:34:15	notice	TLV-11 - unrecognized OID;CM-MAC=--:--:--:--:--:--;CMTS-MAC=--:--:--:--:--:-;CM-QOS=1.1;CM-VER=3.1;
09-06-2024 15:34:13	warning	DHCP WARNING - Non-critical field invalid in response ;CM-MAC=--:--:--:--:--:-;CMTS-MAC=--:--:--:--:--:--;CM-QOS=1.1;CM-VER=3.1;
09-06-2024 15:34:11	notice	Honoring MDD; IP provisioning mode = IPv4
09-06-2024 15:34:08	critical	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=--:--:--:--:--:--;CMTS-MAC=--:--:--:--:--:--;CM-QOS=1.1;CM-VER=3.1;
09-06-2024 15:33:43	critical	No Ranging Response received - T3 time-out;CM-MAC=--:--:--:--:--:--;CMTS-MAC=--:--:--:--:--:--;CM-QOS=1.1;CM-VER=3.1;
09-06-2024 15:33:39	critical	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=--:--:--:--:--:--;CMTS-MAC=:::::;CM-QOS=1.1;CM-VER=3.1;
09-06-2024 15:33:38	critical	Cable Modem Reboot because of - HW or Power-On Reset
08-06-2024 23:09:33	critical	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=--:--:--:--:--:--;CMTS-MAC=--:--:--:--:--:--;CM-QOS=1.1;CM-VER=3.1;
08-06-2024 12:20:13	critical	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=--:--:--:--:--:--;CMTS-MAC=--:--:--:--:--:--;CM-QOS=1.1;CM-VER=3.1;
07-06-2024 08:05:58	critical	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=--:--:--:--:--:--;CMTS-MAC=--:--:--:--:--:--;CM-QOS=1.1;CM-VER=3.1;
06-06-2024 20:49:23	critical	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=--:--:--:--:--:--;CMTS-MAC=--:--:--:--:--:--;CM-QOS=1.1;CM-VER=3.1;
06-06-2024 04:52:15	critical	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=--:--:--:--:--:--;CMTS-MAC=--:--:--:--:--:--;CM-QOS=1.1;CM-VER=3.1;
01-06-2024 07:24:15	critical	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=--:--:--:--:--:--;CMTS-MAC=--:--:--:--:--:--;CM-QOS=1.1;CM-VER=3.1;
31-05-2024 23:44:24	critical	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=--:--:--:--:--:--;CMTS-MAC=--:--:--:--:--:--;CM-QOS=1.1;CM-VER=3.1;
31-05-2024 23:43:49	critical	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=--:--:--:--:--:--;CMTS-MAC=:::::;CM-QOS=1.1;CM-VER=3.1;
31-05-2024 23:43:48	critical	Cable Modem Reboot because of - HW or Power-On Reset
20-05-2024 19:46:27	critical	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=--:---:--:--:--:--;CMTS-MAC=00:--:--:--:--:--;CM-QOS=1.1;CM-VER=3.1;

parmi · ‎11-06-2024

Anyone can help me?

Client62 · ‎11-06-2024

The stats in this thread don't cover packet loss on the video streaming applications in question.

parmi · ‎11-06-2024

What do you mean? what stats do you need?

jpeg1 · ‎11-06-2024

https://www.thinkbroadband.com/broadband/monitoring/quality

Post a link here to the live display.

- jpeg1
My name is NOT Alessandro. That's just a tag Virginmedia sticks on some contributors. Please ignore it.

parmi · ‎11-06-2024

I just created a new account on thinkbroadband, I'm already starting to see that there are packet losses.

parmi · ‎12-06-2024

Anyone have any idea what's going on?

jpeg1 · ‎12-06-2024

That illustrates your reported problem pretty well. How do those red periods coincide with your heavy use? Are there other times that are OK for you when you are streaming?

- jpeg1
My name is NOT Alessandro. That's just a tag Virginmedia sticks on some contributors. Please ignore it.

parmi · ‎12-06-2024

Basically from the tests I have done, I can conclude that during the red periods I notice the following things:

Packet loss in game from 1 to 7 packet losses per second, also according to the graphics and statistics of the game the packet loss is only in upload, the download is ok, the game sends about 1KB/s of UDP data.
The upload speed test drops from 90Mbps to 45Mbps, the download does not suffer any drop.
My multistream to Twitch and YouTube suffers framedrops of around 40% (data reported by OBS), the streaming is set at a bitrate of 8000kbps, so I have an upload of around 16Mbps data, the in-game packet losses occur even if I stop the streams.

There is no one else in the house using the connection during the red periods.

During the non-red periods, none of the above problems occur.

This problem started happening a few days ago, I've never had any problems like this before.

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Packet Loss