Virgin Media Community

[jet8080]

Just joined and would welcome thoughts on T3 errors and Ping graphs please. I don't have all the logs as I rebooted the HUB3 box the other day, but I did keep a note of errors from the logs.

Any feedback welcome.

Many thanks

23/02/2021 16:00:24 critical No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
23/02/2021 14:02:33 Warning! RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
23/02/2021 03:10:19 critical No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
23/02/2021 03:10:19 critical No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
21/02/2021 20:51:19 critical No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
21/02/2021 13:37:25 critical No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
19/02/2021 22:28:53 critical No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
18/02/2021 19:38:57 critical No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
18/02/2021 15:08:18 critical No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

https://www.thinkbroadband.com/broadband/monitoring/quality/share/960af237d8cb34a7d60ee2f3c5590b91cc...

Downstream bonded channels

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

1	402750000	1.5	38	256 qam	25
2	202750000	1.7	38	256 qam	9
3	210750000	1.4	38	256 qam	10
4	218750000	1.5	38	256 qam	11
5	226750000	1.4	38	256 qam	12
6	234750000	1	38	256 qam	13
7	242750000	0.9	38	256 qam	14
8	250750000	0.9	38	256 qam	15
9	258750000	0.5	38	256 qam	16
10	266750000	0.5	38	256 qam	17
11	274750000	0.2	38	256 qam	18
12	282750000	0	38	256 qam	19
13	290750000	0.2	38	256 qam	20
14	298750000	0.2	38	256 qam	21
15	306750000	0.2	38	256 qam	22
16	314750000	0.9	38	256 qam	23
17	322750000	1	38	256 qam	24
18	410750000	1.4	38	256 qam	26
19	418750000	1	38	256 qam	27
20	426750000	1	38	256 qam	28
21	434750000	0.7	38	256 qam	29
22	442750000	0.5	38	256 qam	30
23	450750000	0.4	38	256 qam	31
24	458750000	0.2	38	256 qam	32

Downstream bonded channels

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

1	Locked	38.9	139	72
2	Locked	38.6	40	282
3	Locked	38.6	45	205
4	Locked	38.6	55	215
5	Locked	38.9	63	219
6	Locked	38.9	140	215
7	Locked	38.6	484	193
8	Locked	38.6	985	215
9	Locked	38.9	944	202
10	Locked	38.6	619	192
11	Locked	38.6	209	199
12	Locked	38.6	70	205
13	Locked	38.6	95	147
14	Locked	38.6	64	189
15	Locked	38.9	49	263
16	Locked	38.9	79	135
17	Locked	38.6	57	187
18	Locked	38.9	83	142
19	Locked	38.6	102	94
20	Locked	38.9	132	82
21	Locked	38.6	135	105
22	Locked	38.6	213	47
23	Locked	38.9	280	90
24	Locked	38.9	632	79

Upstream bonded channels

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

1	53700000	47.8	5120	64 qam	1
2	32600000	45.3	5120	64 qam	4
3	39400000	46	5120	64 qam	3
4	46200000	46.5	5120	64 qam	2

Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

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

[jbrennand]

Stats not bad but T3's are - RS errors are not a good sign either - so can you reset to 0.

Switch the Hub off and unplug it for a few minutes and then start up. When done, check back in the settings and ensure that the RS error counts have all reset to 0. Then check every hour or two for the next day or two to see if they start reappearing - they shouldn't. If they do (particularly the postRS ones) you have a problem (noise) that only a Tech visit will sort.

[jet8080]

Hi jbrennand,

Yes indeed those errors will zero out just fine, but the errors will slowly creep up again on the Pre RS Error side and then I tend to get a big windfall of Post RS Errors in one go. But I must admit this is the worst those errors have been to date since install on wednesday the 17th. I will say that a few of the cables connectors look as though they are not crimped properly i.e I see 2-3mm of white on at least two of the connectors is this ok ?

Also do you think my ping graph latency is correct for a hub 3 and Virgin Media in general at this point in time, just to note this is my Plusnet Graph for comparrison https://www.thinkbroadband.com/broadband/monitoring/quality/share/e4073518c36a840920e2bb093c33851e47...

Brand new install by the way, all new cables.

Best regards

[Richw1982]

Hi, I would check the connectors, make sure there is no dialect touching the stinger and they are pushed on correctly.  Then make sure they are done up tight

[jet8080]

Thanks Richw1982,

Good call - I've checked for tightness on the Hub side and Isolater, but will check the stingers etc for any dielectric touching at first light on the outside ones and will post back when that is all done

Best regards

[jet8080]

I've looked at all those cables and apart from as mentioned above that a couple of the connectors seem not to be compressed properly, all is ok.

My Graph shows 2 disconnections, the first (It wasn't Me!) I have no idea and the second was me checking said connectors, no Pre RS Errors for at least the last few hours... so fingers crossed.   I am still curious about the fluctuations in the latency though, not a normal for my old connection.

Downstream bonded channels

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

1	402750000	1.5	38	256 qam	25
2	202750000	1.5	38	256 qam	9
3	210750000	1.4	38	256 qam	10
4	218750000	1.4	38	256 qam	11
5	226750000	1.2	38	256 qam	12
6	234750000	1	38	256 qam	13
7	242750000	0.9	38	256 qam	14
8	250750000	0.9	38	256 qam	15
9	258750000	0.7	38	256 qam	16
10	266750000	0.7	38	256 qam	17
11	274750000	0.4	38	256 qam	18
12	282750000	0	38	256 qam	19
13	290750000	0.2	38	256 qam	20
14	298750000	0.2	38	256 qam	21
15	306750000	0.2	38	256 qam	22
16	314750000	0.7	38	256 qam	23
17	322750000	1	38	256 qam	24
18	410750000	1.2	38	256 qam	26
19	418750000	1	38	256 qam	27
20	426750000	1	38	256 qam	28
21	434750000	0.7	38	256 qam	29
22	442750000	0.5	38	256 qam	30
23	450750000	0.4	38	256 qam	31
24	458750000	0	38	256 qam	32

Downstream bonded channels

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

1	Locked	38.6	0	0
2	Locked	38.6	0	0
3	Locked	38.6	5	0
4	Locked	38.9	6	0
5	Locked	38.6	6	0
6	Locked	38.6	0	0
7	Locked	38.6	0	0
8	Locked	38.6	4	0
9	Locked	38.9	0	0
10	Locked	38.9	0	0
11	Locked	38.6	6	0
12	Locked	38.6	0	0
13	Locked	38.6	6	0
14	Locked	38.6	13	0
15	Locked	38.6	0	0
16	Locked	38.6	3	0
17	Locked	38.9	0	0
18	Locked	38.6	0	0
19	Locked	38.6	0	0
20	Locked	38.6	6	0
21	Locked	38.6	0	0
22	Locked	38.6	5	0
23	Locked	38.6	6	0
24	Locked	38.6	0	0

Refresh data

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

1	53700000	47.8	5120	64 qam	1
2	32600000	45.3	5120	64 qam	4
3	39400000	46	5120	64 qam	3
4	46200000	46.8	5120	64 qam	2

Upstream bonded channelsChannel 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