Virgin Media Community

[lufc]

After persevering with numerous intermittent  hub reboots and calk to help desk, eventually engineer arrived.  No issus since 14th May but today 19th May another 2 reboots and when I look at the network log, the same T3 I critical errors logged just prior to the reboot.

VM had previously blamed my 3rd party wifi mesh setup but prior to the engineer visit I disconnected everything from hub and it rebooted that night.  After his visit it has been fine until today.

Any ideas?

[Andrew-G]

In most cases spontaneously rebooting hubs are not rebooting, but doing a full re-registration with VM's network gear.  And the usual reason for that is cable noise which can be intermittent.  I'll assume any power problems were addressed by the technician visit.  If you post the hub's status data for Downstream, Upstream and Network log (text, not screenshots) then we'll be able to comment.  

[lufc]

Downstream bonded channels

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

1	331000000	6.3	40	256 qam	25
2	203000000	7.5	40	256 qam	9
3	211000000	7.5	40	256 qam	10
4	219000000	7.3	40	256 qam	11
5	227000000	7	38	256 qam	12
6	235000000	6.4	40	256 qam	13
7	243000000	6.5	40	256 qam	14
8	251000000	6.5	40	256 qam	15
9	259000000	6.4	40	256 qam	16
10	267000000	6.4	40	256 qam	17
11	275000000	6.4	40	256 qam	18
12	283000000	6.4	40	256 qam	19
13	291000000	6.4	40	256 qam	20
14	299000000	6.4	38	256 qam	21
15	307000000	6.4	40	256 qam	22
16	315000000	6	40	256 qam	23
17	323000000	5.9	40	256 qam	24
18	339000000	5.9	38	256 qam	26
19	347000000	5.5	40	256 qam	27
20	355000000	5.3	40	256 qam	28
21	363000000	5.1	40	256 qam	29
22	371000000	4.3	38	256 qam	30
23	379000000	4.5	38	256 qam	31
24	387000000	4.8	40	256 qam	32

Downstream bonded channels

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

1	Locked	40.9	7	0
2	Locked	40.3	4	0
3	Locked	40.3	5	0
4	Locked	40.9	5	0
5	Locked	38.9	5	0
6	Locked	40.3	0	0
7	Locked	40.9	6	0
8	Locked	40.3	6	0
9	Locked	40.3	2	0

[lufc]

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

1	60300000	47	5120	64 qam	1
2	39399985	46.8	5120	64 qam	4
3	46199922	47.5	5120	64 qam	3
4	53699916	47.8	5120	64 qam	2

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

1	ATDMA	0	0	6	0
2	ATDMA	0	0	0	0
3	ATDMA	0	0	0	0
4	ATDMA	0	0	0	0

[lufc]

19/05/2021 10:24:8

critical

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

[lufc]

19/05/2021 10:21:17	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=3.0;
19/05/2021 10:19:14	Warning!	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
19/05/2021 10:19:11	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
19/05/2021 10:19:11	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
19/05/2021 10:19:11	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
19/05/2021 10:19:10	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
19/05/2021 07:20:8	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
14/05/2021 18:40:42	Error	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
14/05/2021 14:48:38	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/05/2021 19:39:24	notice	LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
01/01/1970 00:01:42	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
12/05/2021 09:38:50	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
10/05/2021 04:05:36	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
08/05/2021 08:58:1	notice	LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
08/05/2021 00:33:21	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
07/05/2021 17:31:18	notice	LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0