Virgin Media Community

[Asymmetric13]

Hello,

I hope that you (collectively) will be able to help me.

I am a Gig1 customer, and my upload speeds have tanked over the past week or so; I had wondered if this was due to increased load on the Virgin Media back-haul network over the festive period, but alas over the past few delays in particular it has become almost untenable for my use case.

I have included the network status information from my Super Hub 4 below in the hope that those more familiar with these values than I may be able to spot the issue (I'm leaning towards a problem with Upstream Channel 3 based on the logs).

With that said, beyond identifying the issue - I am (as one might expect) even more eager to determine a fix / resolution for the problem.

Should you (collectively) require any further information, please just let me know and I shall post it accordingly.

Thank you one and all in advance for your assistance.

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	31	4
DOCSIS 3.1 channels	1	0

3.1 Downstream channelsChannel ID Lock Status RxMER Data (dB) PLC Power (dBmV) Correcteds (Active Profile) Uncorrectables (Active Profile)

159

Locked

2.7

21312

0

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

1	32600000	46.020599	5120 KSym/sec	64QAM	5
2	39400000	46.270599	5120 KSym/sec	64QAM	4
3	46200000	46.770599	5120 KSym/sec	64QAM	3
4	53700000	47.270599	5120 KSym/sec	64QAM	2

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

1	US_TYPE_STDMA	0	0	2	0
2	US_TYPE_STDMA	0	0	2	0
3	US_TYPE_STDMA	0	0	2	0
4	US_TYPE_STDMA	0	0	2	0

General Configuration

Network access	true
Maximum Number of CPEs	1
Baseline Privacy	true
DOCSIS Mode	3.1
Config file	;kfoA,.iyewrkldJKDHSUBsgv

Primary Downstream Service Flow

SFID	27022
Max Traffic Rate	1200000450
Max Traffic Burst	42600
Min Traffic Rate	0

Primary Upstream Service Flow

SFID	27021
Max Traffic Rate	55000270
Max Traffic Burst	42600
Min Traffic Rate	0
Max Concatenated Burst	16320
Scheduling Type	bestEffort

[Asymmetric13]

Network Log

Time Priority Description

Thu 01/01/1970 00:05:37	5	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:05:39	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:05:51	5	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:05:54	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:05:57	5	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:05:57	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:06:25	5	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:06:29	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:06:37	5	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:06:39	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:06:49	5	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:06:50	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:06:55	5	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:06:57	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:07:03	5	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:07:08	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:07:15	5	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:07:15	5	B-INIT-RNG Failure - Retries exceeded;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:07:24	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:07:47	5	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:07:54	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:07:59	5	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:08:10	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:08:15	5	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:08:22	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:08:27	5	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:08:32	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:08:41	5	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:08:43	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:08:47	5	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:09:04	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:09:23	5	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:09:28	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:09:35	5	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:09:41	5	B-INIT-RNG Failure - Retries exceeded;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:09:45	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:09:55	5	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:10:10	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:10:27	5	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:10:27	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:10:39	5	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:10:59	3	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;
Thu 01/01/1970 00:11:21	5	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:13:09	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

[MikeRobbo]

You only have one Downstream Channel, you should have 32.

This will need an engineer to put right.

You can either call in (08:00 is the best time) or wait on here for a few days (6 to 10 days average) until one of the VM Forum Staff comes along.

If you wait on here Do Not bump the thread it will put it further down the VM 'to do list'.

[Asymmetric13]

Hi MikeRobbo,

Thank you for your reply; I appreciate your support.

I fear an erroneous entry in my first post may have led you astray; I had not intended to include any of the information from "Downstream" Router Status tab, as my issue is related to upload. As I encountered character limits in my posts - I thought it would save space to remove these entries. Alas, one slipped through and so made it look like I have fewer than the expected 32 Downstream Channels when - in fact - I do not. Here is the full "Downstream" Router Status information (in this post and my next) to, hopefully, rule this element out / help with further diagnosis:

3.0 Downstream channels

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

32	387000000	4.400002	36.844463	QAM256	32
33	395000000	3.799999	36.609653	QAM256	33
34	403000000	4.099998	36.609653	QAM256	34
35	411000000	4.400002	36.609653	QAM256	35
36	419000000	4.400002	36.609653	QAM256	36
37	427000000	4.199997	36.609653	QAM256	37
38	435000000	4.000000	36.609653	QAM256	38
39	443000000	4.500000	37.355988	QAM256	39
40	451000000	4.500000	37.636276	QAM256	40
10	211000000	4.699997	37.636276	QAM256	10
11	219000000	4.699997	37.355988	QAM256	11
12	227000000	4.800003	37.636276	QAM256	12
13	235000000	4.800003	37.636276	QAM256	13
14	243000000	4.699997	37.355988	QAM256	14
15	251000000	4.300003	37.355988	QAM256	15
16	259000000	4.900002	37.636276	QAM256	16
17	267000000	5.000000	37.355988	QAM256	17
18	275000000	4.900002	37.636276	QAM256	18
19	283000000	4.599998	37.355988	QAM256	19
20	291000000	4.199997	37.636276	QAM256	20
21	299000000	4.400002	37.355988	QAM256	21
22	307000000	4.900002	36.609653	QAM256	22
23	315000000	5.099998	37.636276	QAM256	23
24	323000000	4.900002	36.609653	QAM256	24
25	331000000	4.800003	37.636276	QAM256	25
26	339000000	5.199997	37.636276	QAM256	26
27	347000000	5.400002	37.355988	QAM256	27
28	355000000	5.099998	37.355988	QAM256	28
29	363000000	5.099998	37.355988	QAM256	29
30	371000000	5.099998	37.355988	QAM256	30
31	379000000	4.900002	37.355988	QAM256	31

[Asymmetric13]

Second Part of "Downstream" Router Status information:

3.0 Downstream channels

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

32	Locked	0	15	0
33	Locked	548592925	18	0
34	Locked	548271452	22	0
35	Locked	520285269	28	0
36	Locked	531984295	45	0
37	Locked	550340491	36	0
38	Locked	549853391	35	0
39	Locked	524236453	49	0
40	Locked	635790269	40	0
10	Locked	644009782	1	0
11	Locked	3404984221	0	0
12	Locked	592363541	0	0
13	Locked	647187592	0	0
14	Locked	647446546	1	0
15	Locked	615029750	0	0
16	Locked	2706074955	0	0
17	Locked	361844797	0	0
18	Locked	362143969	1	0
19	Locked	333502898	1	0
20	Locked	342344054	1	0
21	Locked	357407914	0	0
22	Locked	358199811	2	0
23	Locked	336581922	2	0
24	Locked	513425116	6	0
25	Locked	544690467	4	0
26	Locked	545793338	3	0
27	Locked	516502677	4	0
28	Locked	572830859	4	0
29	Locked	545925151	1	0
30	Locked	546049557	7	0
31	Locked	633884681	12	0

3.1 Downstream channels

Channel	Channel Width (MHz)	FFT Type	Number of Active Subcarriers	Modulation (Active Profile)	First Active Subcarrier (Hz)
159	96	4K	1880	QAM256	759

3.1 Downstream channels

Channel ID	Lock Status	RxMER Data (dB)	PLC Power (dBmV)	Correcteds (Active Profile)	Uncorrectables (Active Profile)
159	Locked		2.7	21312	0