Virgin Media Community

[Cardiffman281]

Hub 3

200 mbs package 

3-5 two minute whole house disconnections every day. 

Downstream power (3-5 range) looks low compared to other posts. Also lots of pre RS errors downstream. 

[Cardiffman281]

Downstream bonded channels

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

1	315000000	4.1	40	256 qam	23
2	203000000	3.5	40	256 qam	9
3	211000000	3.5	40	256 qam	10
4	219000000	3.4	40	256 qam	11
5	227000000	3.2	40	256 qam	12
6	235000000	2.9	40	256 qam	13
7	243000000	2.5	40	256 qam	14
8	251000000	2.9	40	256 qam	15
9	259000000	3.5	40	256 qam	16
10	267000000	4	40	256 qam	17
11	275000000	3.9	40	256 qam	18
12	283000000	4	40	256 qam	19
13	291000000	4	40	256 qam	20
14	299000000	4.1	38	256 qam	21
15	307000000	3.7	40	256 qam	22
16	323000000	4.5	40	256 qam	24
17	331000000	4.6	40	256 qam	25
18	371000000	3.5	40	256 qam	26
19	379000000	3.9	38	256 qam	27
20	387000000	3.9	38	256 qam	28
21	395000000	4	40	256 qam	29
22	403000000	4.3	40	256 qam	30
23	411000000	4.3	40	256 qam	31
24	419000000	4	40	256 qam

[Cardiffman281]

Downstream bonded channels

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

1	Locked	40.3	6	0
2	Locked	40.3	3	0
3	Locked	40.3	5	0
4	Locked	40.3	4	0
5	Locked	40.3	7	0
6	Locked	40.3	5	0
7	Locked	40.3	2	0
8	Locked	40.3	0	0
9	Locked	40.3	4	0
10	Locked	40.3	6	0
11	Locked	40.3	7	0
12	Locked	40.3	3	0
13	Locked	40.3	5	0
14	Locked	38.9	6	0
15	Locked	40.9	3	0
16	Locked	40.3	5	0
17	Locked	40.3	5	0
18	Locked	40.3	1	0
19	Locked	38.9	5	0
20	Locked	38.9	6	0
21	Locked	40.9	4	0
22	Locked	40.3	6	0
23	Locked	40.9	5	0
24	Locked	40.3	7	0

[Cardiffman281]

Upstream bonded channels

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

1	39399955	36	5120	64 qam	4
2	46200000	36.5	5120	64 qam	3
3	53700000	37	5120	64 qam	2
4	32600241	35.5	5120	64 qam	5

Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

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

[Cardiffman281]

Refresh data

Network LogTime Priority Description

03/02/2021 10:35:10	notice	LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
01/02/2021 06:39:3	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
31/01/2021 19:15:37	Error	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
28/01/2021 14:41:53	notice	LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
28/01/2021 07:15:36	Error	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/01/2021 03:36:35	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
25/01/2021 04:58:55	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 11:21:11	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
23/01/2021 22:02:43	notice	LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
21/01/2021 19:13:48	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
20/01/2021 20:32:16	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 22:09:31	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
15/01/2021 19:59:1	notice	LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
15/01/2021 18:01:10	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
15/01/2021 12:06:46	notice	LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
14/01/2021 01:59:31	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/01/2021 18:08:27	Error	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
10/01/2021 18:38:26	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
10/01/2021 06:08:26	Error	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
01/01/1970 00:01:40	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

[Cardiffman281]

https://www.thinkbroadband.com/broadband/monitoring/quality/share/f68940f9de87594029b579633e30fe2c4a... Hub monitoring 

 

[Tudor · Accepted solution]

Those power levels are not low, they are fine.

Downstream: no lower than -6dBmV and no higher than 10dBmV - Close to 0 is optimal. SNR >33

Upstream: no lower than 31dBmV and no higher than 50dBmV - 44dBmV -46dBmV is optimal.