what are the source of RS Errors?

[tsui]

Will the errors cause the hub to reboot or the hub has problem and generate the errors?

Actualy what is RS?

[jem101]

No they won’t and it stands for Reed-Solomon who were two American mathematicians.

[tsui]

so auto reboot is likely caused by problems of the hub itself?

[-tony-]

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@tsui wrote:
so auto reboot is likely caused by problems of the hub itself?

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could be - could be many things 

log into hub3 - 192.168.0.1 [or 192.168.100.1 if in modem mode] - DON'T SIGN IN, click - click router status [centre of screen] - and post the downstream and upstream figures - to see those press on the grey buttons/boxes labelled - upstream - downstream

if its an earlier hub button is top right

[tsui]

actually a Virgin Media engineer had already came to adjust the signal a few months ago

Downstream bonded channels

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

1	331000000	7.5	40	256 qam	25
2	203000000	5.3	40	256 qam	9
3	211000000	5.5	38	256 qam	10
4	219000000	5.5	40	256 qam	11
5	227000000	5.4	40	256 qam	12
6	235000000	5.3	40	256 qam	13
7	243000000	5.3	40	256 qam	14
8	251000000	5.5	40	256 qam	15
9	259000000	5.9	38	256 qam	16
10	267000000	6.3	40	256 qam	17
11	275000000	6.5	40	256 qam	18
12	283000000	6.8	40	256 qam	19
13	291000000	7	40	256 qam	20
14	299000000	7.1	40	256 qam	21
15	307000000	7.3	40	256 qam	22
16	315000000	7.5	40	256 qam	23
17	323000000	7.5	40	256 qam	24
18	339000000	7.5	40	256 qam	26
19	347000000	7.5	40	256 qam	27
20	355000000	7.5	40	256 qam	28
21	363000000	7.5	40	256 qam	29
22	371000000	7.5	40	256 qam	30
23	379000000	7.5	40	256 qam	31
24	387000000	7.5	40	256 qam	32

Downstream bonded channels

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

1	Locked	40.3	113530	42335
2	Locked	40.3	151049	55309
3	Locked	38.9	147028	57173
4	Locked	40.3	144582	55272
5	Locked	40.3	144482	58703
6	Locked	40.3	148568	61239
7	Locked	40.3	144808	55614
8	Locked	40.3	134518	52877
9	Locked	38.9	130239	49472
10	Locked	40.3	128154	51692
11	Locked	40.3	124615	54072
12	Locked	40.9	119299	51286
13	Locked	40.3	118496	50087
14	Locked	40.3	121485	51822
15	Locked	40.3	119657	57268
16	Locked	40.3	113774	53549
17	Locked	40.9	114676	52980
18	Locked	40.3	110243	43859
19	Locked	40.3	105212	46234
20	Locked	40.3	104934	45455
21	Locked	40.3	104035	45175
22	Locked	40.3	103893	50145
23	Locked	40.9	102696	46860
24	Locked	40.9	101651	44889

Upstream bonded channels

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

1	46200051	41.5	5120	64 qam	11
2	39400012	41.8	5120	64 qam	12
3	53700048	41.8	5120	64 qam	10
4	60300024	42.8	5120	64 qam	9

Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1	ATDMA	0	0	8	0
2	ATDMA	0	0	5	0
3	ATDMA	0	0	22	0
4	ATDMA	0	0	1	0

[-tony-]

levels are good but rs errors are not - you could do a reboot to zero them and see if they rise again - check all the coax connections are tight if they rise again you need a tech to look at things

[tsui]

there are random burst of errors, twice a day or once a week

they have looked into it before and nothing improved. the coax cord had also been replaced.

[Tudor]

Hubs do not auto reboot, they lose their connection to the VM CMTS, the equipment at the other end of your cable. When this happens the hubs go through a retry sequence until they reestablish a connection. During this often the WiFi and Ethernet devices will not communicate even just on the LAN. A large number of Post RS errors and T3’s can certainly cause this. If a hub does reboot itself you will find messages in the log with a date of 01/01/1970.

[tsui]

thanks, very clear

[Ashleigh_C]

Hi there @tsui

Thank you so much for your post and I'm so sorry to see that you have been facing disconnects! 

Have you been able to try the reset as advised by @-tony-? 

If so how are things now looking? 

Thank you.