Virgin Media Community

[sturrock]

Hi 

Hope you can help, please. We have 350 MBPS service via a SH3 mostly to wired devices eg. Apple TV and Sky boxes plus a direct ethernet connection from the SH3 to a PC and another to a PlayStation.

We find the performance so erractic, sometimes fast sometimes v slow (wired speed test can range from 340 to 30  and on occasion nothing. 

Having look at the logs there seem to be quite a few errors I will post here, hope you can help as it is so frustrating.

Network Log

Time Priority Description

02/02/2021 09:58:30	notice	LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/02/2021 09:54:54	Warning!	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/02/2021 09:54:46	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/02/2021 09:54:45	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/02/2021 09:54:41	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/02/2021 09:54:40	Warning!	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/02/2021 09:54:39	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/02/2021 09:54:38	Warning!	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/02/2021 09:54:38	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/02/2021 09:54:38	Warning!	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/02/2021 09:54:37	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/02/2021 09:54:36	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/02/2021 09:54:23	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/02/2021 09:54:22	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/02/2021 09:54:21	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/02/2021 09:54:20	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/02/2021 09:54:20	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/02/2021 09:54:19	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

Upstream bonded channels

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

1	60300060	44.3	5120	64 qam	1
2	39400108	42.5	5120	64 qam	4
3	46200021	42.8	5120	64 qam	3
4	53700056	43.5	5120	64 qam	2

Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

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

Downstream bonded channels

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

1	139000000	8	36	256 qam	1
2	147000000	7.6	36	256 qam	2
3	155000000	7.1	34	256 qam	3
4	163000000	6.8	34	256 qam	4
5	171000000	6.5	35	256 qam	5
6	179000000	6.3	35	256 qam	6
7	187000000	6.1	36	256 qam	7
8	195000000	6	37	256 qam	8
9	203000000	5.6	37	256 qam	9
10	211000000	5.5	37	256 qam	10
11	219000000	5.5	37	256 qam	11
12	227000000	5.5	37	256 qam	12
13	235000000	5.5	37	256 qam	13
14	243000000	5.1	37	256 qam	14
15	251000000	5.1	37	256 qam	15
16	259000000	5	37	256 qam	16
17	267000000	5.6	37	256 qam	17
18	275000000	6	37	256 qam	18
19	283000000	6.1	37	256 qam	19
20	291000000	5.9	37	256 qam	20
21	299000000	6.3	37	256 qam	21
22	307000000	6	37	256 qam	22
23	315000000	5.5	36	256 qam	23
24	323000000	5	36	256 qam	24