Virgin Media Community

[Ayresie]

I am posting today about my virgin media m350 broadband package. Recently i have been noticing inconsistent speeds and ping/jitter. I decided to run a few tests and do some research. I found out about bqms so i decided to run one. I don't think it looked as bad too what some people's graphs look like, but im still getting the same problem as them 

This is the live link for the bqm: 

https://www.thinkbroadband.com/broadband/monitoring/quality/share/669c503aa6c16f714ef99e57cbcb26844c1044d9

 Also seen some critical errors in the network log:

Time Priority Description

31/01/2021 11:35:25	Error	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
30/01/2021 09:07:20	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
27/01/2021 23:35:25	Error	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
24/01/2021 18:36:8	notice	LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
24/01/2021 11:35:24	Error	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/01/2021 13:07:34	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
20/01/2021 23:35:25	Error	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
20/01/2021 17:30:44	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
17/01/2021 21:57:22	Error	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
17/01/2021 21:39:30	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
16/01/2021 01:24:20	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
16/01/2021 01:24:20	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
16/01/2021 01:24:17	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
16/01/2021 01:22:5	Warning!	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
16/01/2021 01:22:0	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
16/01/2021 01:22:0	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
16/01/2021 01:21:59	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
16/01/2021 01:21:59	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
16/01/2021 01:21:56	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
16/01/2021 01:21:56	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

[Andruser]

16th Jan was clearly a bad day, that apart it all looks normal for a cable connection.  Post the Downstream and Upstream stats and let's see if there's noise or power problems.

[Ayresie]

Ok thank you

Downstream bonded channelsChannel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID

1	139000000	2	38	256 qam	1
2	147000000	2	38	256 qam	2
3	155000000	2.2	38	256 qam	3
4	163000000	1.9	38	256 qam	4
5	171000000	2	38	256 qam	5
6	179000000	2	38	256 qam	6
7	187000000	2	40	256 qam	7
8	195000000	1.7	40	256 qam	8
9	203000000	1.4	38	256 qam	9
10	211000000	1.2	38	256 qam	10
11	219000000	0.9	40	256 qam	11
12	227000000	0.7	38	256 qam	12
13	235000000	0.7	38	256 qam	13
14	243000000	1	40	256 qam	14
15	251000000	0.5	38	256 qam	15
16	259000000	1	38	256 qam	16
17	267000000	1	38	256 qam	17
18	275000000	1.4	40	256 qam	18
19	283000000	1.2	40	256 qam	19
20	291000000	1.5	38	256 qam	20
21	299000000	1.7	38	256 qam	21
22	307000000	1.7	40	256 qam	22
23	315000000	1.5	40	256 qam	23
24	323000000	1.7	38	256 qam	24

Downstream bonded channelsChannel Locked Status RxMER (dB) Pre RS Errors Post RS Errors

1	Locked	38.9	227	0
2	Locked	38.9	174	0
3	Locked	38.9	152	0
4	Locked	38.9	330	0
5	Locked	38.9	127	0
6	Locked	38.9	147	0
7	Locked	40.3	149	0
8	Locked	40.3	100	0
9	Locked	38.9	222	0
10	Locked	38.6	243	0
11	Locked	40.3	136	0
12	Locked	38.9	167	0
13	Locked	38.9	277	0
14	Locked	40.3	236	0
15	Locked	38.9	213	0
16	Locked	38.9	268	0
17	Locked	38.9	186	0
18	Locked	40.3	107	12
19	Locked	40.3	213	0
20	Locked	38.9	201	15
21	Locked	38.9	280	0
22	Locked	40.3	308	14
23	Locked	40.9	215	0
24	Locked	38.9	260	0

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

1	60300000	39.5	5120	64 qam	1
2	53700000	39.2	5120	16 qam	2
3	46200000	38.8	5120	64 qam	3
4	39400000	38.8	5120	64 qam	4

Upstream bonded channelsChannel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

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

[Andruser]

Not conclusive, but looks like you may have an upstream noise issue - one of the channels is dropping back to 16QAM, and there's a spattering of T3 timeouts across the upstream.  There's also some unwelcome post-RS (uncorrected) errors breaking through on a few of the downstream channels.  I'll flag this up for the forum staff to take a look and advise.

[Ayresie]

Awesome, thank you very much!

[Ayresie]

Sorry to bother you as I know you do this in your spare time @Andruser , But have you managed to flag this to a forum staff member yet?

[Andruser]

Hiya, I did at the time, looks like it got missed (not a bombproof process) so I've escalated a second time.

[Zak_M]

Good afternoon @Ayresie 

Welcome back to the forums and thank you for taking the time to post. 

I am sorry to hear that you have had some issues with your broadband services. 

We can take a further look into things from our end. 

To get some account information I will need to drop you a PM. 

Kind regards,

Zak_M