Virgin Media Community

[dabeeeenster]

Hi,

Seeing the following in my logs - is this normal? On a newish gig1 connection, Hub4 is in Modem mode. Thanks!

Time Priority Description

Thu Jun 17 05:14:15 2021	3	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jul 8 12:17:33 2021	6	CM-STATUS message sent. Event Type Code: 4; Chan ID: 3; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jul 8 12:17:36 2021	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jul 8 12:17:36 2021	3	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jul 8 12:17:37 2021	5	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jul 8 12:17:40 2021	6	CM-STATUS message sent. Event Type Code: 21; Chan ID: 33; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jul 8 12:17:42 2021	5	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jul 8 12:18:11 2021	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jul 8 12:18:17 2021	6	CM-STATUS message sent. Event Type Code: 4; Chan ID: 2; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Fri Jul 9 16:04:27 2021	4	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Sat Jul 10 09:37:00 2021	5	MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Sat Jul 10 10:09:25 2021	6	CM-STATUS message sent. Event Type Code: 5; Chan ID: 6; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 13 12:50:41 2021	4	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 13 21:31:40 2021	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jul 15 05:14:39 2021	6	CM-STATUS message sent. Event Type Code: 23; Chan ID: 33; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Fri Jul 16 20:57:40 2021	4	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Mon Jul 19 20:01:45 2021	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 20 08:57:40 2021	4	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Wed Jul 21 00:47:58 2021	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jul 22 05:14:39 2021	6	CM-STATUS message sent. Event Type Code: 23; Chan ID: 33; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jul 22 23:31:32 2021	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Sat Jul 24 08:33:52 2021	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;
Sat Jul 24 08:36:28 2021	5	MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 27 09:34:35 2021	3	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

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

Downstream

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

25	331000000	7.599998	38.605377	QAM256	25
1	139000000	10.800003	38.983261	QAM256	1
2	147000000	10.800003	38.605377	QAM256	2
3	155000000	10.900002	38.983261	QAM256	3
4	163000000	11.500000	38.605377	QAM256	4
5	171000000	11.599998	38.983261	QAM256	5
6	179000000	11.599998	38.983261	QAM256	6
7	187000000	11.500000	38.983261	QAM256	7
8	195000000	11.699997	40.366287	QAM256	8
9	203000000	11.300003	38.983261	QAM256	9
10	211000000	10.900002	38.983261	QAM256	10
11	219000000	10.599998	38.605377	QAM256	11
12	227000000	10.099998	38.605377	QAM256	12
13	235000000	9.300003	38.605377	QAM256	13
14	243000000	8.199997	38.983261	QAM256	14
15	251000000	8.000000	38.605377	QAM256	15
16	259000000	7.000000	38.983261	QAM256	16
17	267000000	7.199997	38.605377	QAM256	17
18	275000000	7.300003	38.605377	QAM256	18
19	283000000	6.900002	38.605377	QAM256	19
20	291000000	6.400002	38.605377	QAM256	20
21	299000000	5.699997	38.983261	QAM256	21
22	307000000	5.900002	38.983261	QAM256	22
23	315000000	6.599998	38.983261	QAM256	23
24	323000000	7.400002	38.605377	QAM256	24
26	339000000	8.000000	38.605377	QAM256	26
27	347000000	7.900002	38.605377	QAM256	27
28	355000000	7.599998	38.983261	QAM256	28
29	363000000	7.699997	38.605377	QAM256	29
30	371000000	8.300003	38.605377	QAM256	30
31	379000000	8.599998	37.355988	QAM256	31

Upstream

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

1	39400000	45.270599	5120 KSym/sec	64QAM	4
2	46200000	45.270599	5120 KSym/sec	64QAM	3
3	60300000	45.770599	5120 KSym/sec	32QAM	1
4	53700000	45.770599	5120 KSym/sec	64QAM	2

Config

General Configuration

Network access	true
Maximum Number of CPEs	1
Baseline Privacy	true
DOCSIS Mode	3.1
Config file	cmreg-vmdg640-bbt076+voc-b.cm

Primary Downstream Service Flow

SFID	273430
Max Traffic Rate	1200000450
Max Traffic Burst	42600
Min Traffic Rate	0

Primary Upstream Service Flow

SFID	273429
Max Traffic Rate	55000270
Max Traffic Burst	42600
Min Traffic Rate	0
Max Concatenated Burst	42600
Scheduling Type	bestEffort

[-tony-]

are the disconnects wired or wireless

the downstream is high on some channels +10 is max but i dont think that would cause disconnects - speed problems maybe but thats a big maybe - that said they should be lowered - that will need a tech visit

post the second page from the downstream - that may tell us more

upstream has its own problems - levels are fine but one channel is on 32qam - they should all be on 64 - that may be the issue - try a reboot - before you do that though post the second page of the downstream - a reboot will zero all the errors if any exist

[dabeeeenster]

Thanks for the quick reply! This is all wired. 

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

25	331000000	7.500000	38.983261	QAM256	25
1	139000000	10.699997	38.983261	QAM256	1
2	147000000	10.699997	38.605377	QAM256	2
3	155000000	10.800003	38.983261	QAM256	3
4	163000000	11.300003	38.983261	QAM256	4
5	171000000	11.500000	38.983261	QAM256	5
6	179000000	11.500000	38.983261	QAM256	6
7	187000000	11.500000	38.983261	QAM256	7
8	195000000	11.599998	40.366287	QAM256	8
9	203000000	11.300003	38.605377	QAM256	9
10	211000000	10.800003	38.605377	QAM256	10
11	219000000	10.500000	38.605377	QAM256	11
12	227000000	10.000000	38.605377	QAM256	12
13	235000000	9.199997	38.605377	QAM256	13
14	243000000	8.099998	38.983261	QAM256	14
15	251000000	7.900002	38.605377	QAM256	15
16	259000000	6.900002	38.983261	QAM256	16
17	267000000	7.099998	38.605377	QAM256	17
18	275000000	7.199997	38.605377	QAM256	18
19	283000000	6.800003	38.605377	QAM256	19
20	291000000	6.300003	38.983261	QAM256	20
21	299000000	5.699997	38.983261	QAM256	21
22	307000000	5.800003	38.983261	QAM256	22
23	315000000	6.599998	38.605377	QAM256	23
24	323000000	7.400002	38.605377	QAM256	24
26	339000000	8.000000	38.605377	QAM256	26
27	347000000	7.900002	38.605377	QAM256	27
28	355000000	7.500000	38.605377	QAM256	28
29	363000000	7.699997	38.983261	QAM256	29
30	371000000	8.199997	38.605377	QAM256	30
31	379000000	8.500000	37.636276	QAM256	31

3.0 Downstream channelsChannel Lock Status RxMER (dB) Pre RS Errors Post RS Errors

25	Locked	38.983261	0	0
1	Locked	38.983261	0	0
2	Locked	38.605377	0	0
3	Locked	38.983261	9	0
4	Locked	38.983261	0	0
5	Locked	38.983261	0	0
6	Locked	38.983261	5	0
7	Locked	38.983261	0	0
8	Locked	40.366287	1	0
9	Locked	38.605377	0	0
10	Locked	38.605377	3	0
11	Locked	38.605377	0	0
12	Locked	38.605377	0	0
13	Locked	38.605377	0	0
14	Locked	38.983261	0	0
15	Locked	38.605377	0	0
16	Locked	38.983261	0	0
17	Locked	38.605377	0	0
18	Locked	38.605377	0	0
19	Locked	38.605377	0	0
20	Locked	38.983261	0	0
21	Locked	38.983261	0	0
22	Locked	38.983261	0	0
23	Locked	38.605377	0	0
24	Locked	38.605377	0	0
26	Locked	38.605377	0	0
27	Locked	38.605377	0	0
28	Locked	38.605377	0	0
29	Locked	38.983261	0	0
30	Locked	38.605377	0	0
31	Locked	37.636276	0	0

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

33

96

4K

1880

QAM4096

759

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

33

Locked

40

3.9

151756814

0

[-tony-]

ok thats confirmed the downstream is high on some channels - the error levels are fine

all you can do is a reboot and see if that helps on the upstream - if not try a reset - that will set everything back to default - again see if it helps the upstream

regardless of that you need a tech to lower the downstream power levels and look to see whats causing the disconnects - wait for VM to get to the thread they should book a tech

worth setting up a bqm - that adds to the info

[Laurie_C]

Hi dabeeeenster,

Thanks for getting in touch, and a very warm welcome back to the Community Forum!

I'd be more than happy to look into this for you, I'll just need to confirm a few details via Private Message. Please look out for a purple envelope in the top right corner of your screen.

Kind regards,

Laurie