RCS Partial Service/No Ranging Response received

[ClMcGee]

Hello there. For the last month we are experiencing broadband outages and drops everyday.
Usually while checking Hub logs quickly I can notice a clear connection between Downstream Channels power drops and RCS errors appearing, however signal then gets back to normal until next outage. We've already had 3 engineer visits (last one yesterday, 4-7pm, said it was fine).
And after the last guy left we've experienced outage again around 10pm.
Outages are not so long, but extremely annoying because they are enough to disconnect everything.

BQM link: 

BQM 

Last outages happened just an hour and 30 minutes ago.

[jbrennand]

Post up the Hub data as per this...
______________________________

In your browser’s URL box type in http://192.168.0.1 (or http://192.168.100.1 - if in modem mode) (DONT click these links) - and hit return. On the first page up dont login (unless you have the Hub4/5 - when you do login) just click on the “router status” icon/text at bottom-middle (Hub3/4) or top/right (SH’s) of the Login page and then Navigate to these “pages” and just copy/paste the normal “Formatted Text” (not images) 3 FULL sets of data onto here – 2 tables from the Downstream, 2 from the Upstream, & the Network Logs page. Don't worry too much about the formatting it can be easily read & DON’T include personal data or MAC addresses - blank them out - if you copy/paste the data, the board software will do this for you (you may need to click the "submit" button again. If character limits are “exceeded” - just do two posts

[ClMcGee]

Downstream bonded channels

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

1	387000000	5.3	37	256 qam	32
2	203000000	5.3	36	256 qam	9
3	211000000	5	35	256 qam	10
4	219000000	5.4	36	256 qam	11
5	227000000	5.4	36	256 qam	12
6	235000000	5.1	36	256 qam	13
7	243000000	4.8	36	256 qam	14
8	251000000	4.8	36	256 qam	15
9	259000000	5	36	256 qam	16
10	267000000	5.5	36	256 qam	17
11	275000000	5	36	256 qam	18
12	283000000	5	37	256 qam	19
13	291000000	5.4	37	256 qam	20
14	299000000	6	37	256 qam	21
15	307000000	6	37	256 qam	22
16	315000000	5.9	37	256 qam	23
17	323000000	5.9	37	256 qam	24
18	331000000	6	37	256 qam	25
19	339000000	6.1	37	256 qam	26
20	347000000	5.9	37	256 qam	27
21	355000000	5.5	37	256 qam	28
22	363000000	5.4	37	256 qam	29
23	371000000	5.5	37	256 qam	30
24	379000000	5.5	37	256 qam	31

Downstream bonded channels

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

1	Locked	37.3	1147	2658
2	Locked	36.3	3714	2936
3	Locked	35.7	4067	2756
4	Locked	36.3	3193	2803
5	Locked	36.6	2848	2641
6	Locked	36.6	2765	2493
7	Locked	36.3	2524	2533
8	Locked	36.6	2458	2529
9	Locked	36.3	2314	2356
10	Locked	36.6	2104	2585
11	Locked	36.6	2012	2577
12	Locked	37.3	1742	2553
13	Locked	37.6	1707	2494
14	Locked	37.3	1619	2460
15	Locked	37.6	1539	2359
16	Locked	37.3	1462	2450
17	Locked	37.3	1346	2421
18	Locked	37.6	1324	2297
19	Locked	37.6	1284	2653
20	Locked	37.6	1257	2533
21	Locked	37.6	1203	2574
22	Locked	37.3	1263	2689
23	Locked	37.6	1217	2373
24	Locked	37.3	1164	2396

Upstream bonded channels

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

1	46200000	38.5	5120	64 qam	3
2	32600000	37.5	5120	64 qam	5
3	39400000	38.5	5120	64 qam	4
4	53700000	39	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	6	0
3	ATDMA	0	0	8	0
4	ATDMA	0	0	3	0

[ClMcGee]

Network Log

Time Priority Description

26/05/2022 14:21:55	critical	No Ranging Response received - T3 time-out;CM-MAC=X;CMTS-MAC=X;CM-QOS=1.1;CM-VER=3.0;
26/05/2022 11:07:20	Warning!	RCS Partial Service;CM-MAC=X;CMTS-MAC=X;CM-QOS=1.1;CM-VER=3.0;
26/05/2022 11:05:14	critical	No Ranging Response received - T3 time-out;CM-MAC=X;CMTS-MAC=X;CM-QOS=1.1;CM-VER=3.0;
26/05/2022 11:05:14	Warning!	RCS Partial Service;CM-MAC=X;CMTS-MAC=X;CM-QOS=1.1;CM-VER=3.0;
26/05/2022 02:05:26	critical	No Ranging Response received - T3 time-out;CM-MAC=X;CMTS-MAC=X;CM-QOS=1.1;CM-VER=3.0;
26/05/2022 02:05:26	Warning!	RCS Partial Service;CM-MAC=X;CMTS-MAC=X;CM-QOS=1.1;CM-VER=3.0;
26/05/2022 01:09:12	critical	No Ranging Response received - T3 time-out;CM-MAC=X;CMTS-MAC=X;CM-QOS=1.1;CM-VER=3.0;
25/05/2022 22:50:0	Warning!	RCS Partial Service;CM-MAC=X;CMTS-MAC=X;CM-QOS=1.1;CM-VER=3.0;
25/05/2022 17:39:34	critical	No Ranging Response received - T3 time-out;CM-MAC=X;CMTS-MAC=X;CM-QOS=1.1;CM-VER=3.0;
25/05/2022 16:00:9	notice	LAN login Success;CM-MAC=X;CMTS-MAC=X;CM-QOS=1.1;CM-VER=3.0;
25/05/2022 13:57:1	Warning!	RCS Partial Service;CM-MAC=X;CMTS-MAC=X;CM-QOS=1.1;CM-VER=3.0;
25/05/2022 13:55:58	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=X;CMTS-MAC=XCM-QOS=1.1;CM-VER=3.0;
25/05/2022 05:51:56	notice	DHCP Renew - lease parameters tftp file-cmreg-vmdg505-bbt062-b.cm modified;CM-MAC=X;CMTS-MAC=X;CM-QOS=1.1;CM-VER=3.0;
25/05/2022 05:51:56	Error	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=X;CMTS-MAC=X;CM-QOS=1.1;CM-VER=3.0;
24/05/2022 23:30:59	critical	No Ranging Response received - T3 time-out;CM-MAC=X;CMTS-MAC=X;CM-QOS=1.1;CM-VER=3.0;
24/05/2022 16:13:23	Warning!	RCS Partial Service;CM-MAC=X;CMTS-MAC=X;CM-QOS=1.1;CM-VER=3.0;
24/05/2022 11:01:50	critical	No Ranging Response received - T3 time-out;CM-MAC=X;CMTS-MAC=X;CM-QOS=1.1;CM-VER=3.0;
24/05/2022 10:58:24	Warning!	RCS Partial Service;CM-MAC=X;CMTS-MAC=X;CM-QOS=1.1;CM-VER=3.0;
24/05/2022 10:57:51	critical	No Ranging Response received - T3 time-out;CM-MAC=X;CMTS-MAC=X;CM-QOS=1.1;CM-VER=3.0;
24/05/2022 09:59:35	Warning!	RCS Partial Service;CM-MAC=X;CMTS-MAC=X;CM-QOS=1.1;CM-VER=3.0;

[jbrennand]

OK but can we start from a clean sheet by doing this.
__________________________________________

Switch the Hub off and unplug it from the mains supply for five minutes. Whilst it's off, do a quick check that all of your coax and ethernet cable connections are in nice and "finger" tight - at the Hub and wall box and also at any connectors etc. Ensure there are no “unterminated cable loose ends. Disconnect all the connections and reconnect to be sure. Also check that the internal wiring is ok with no kinking or chaffing, check that all looks good with the outside cabling and wall box (no “staples, etc.,) piercing the cables. Then switch the Hub back on and leave ~5 minutes

When all done, check back in the settings and ensure that the RS error counts and T3 errors have all reset to 0. Then check every hour or so to see if they start reappearing - they shouldn't. If they do (particularly the postRS and T3 ones) you have a problem (noise) that only a Tech visit will sort.

[ClMcGee]

Ok, thanks for the guide, will do this right away.

[ClMcGee]

Upstream bonded channels

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

1	46199998	38.5	5120	64 qam	3
2	32599974	38.5	5120	64 qam	5
3	39400019	38.5	5120	64 qam	4
4	53700004	38.5	5120	64 qam	2

just wanted to share that Power graph became suspiciously good after the reboot

also so far so good

Downstream bonded channels

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

1	Locked	37.6	0	0
2	Locked	36.3	7	0
3	Locked	35.7	4	0
4	Locked	36.3	5	0
5	Locked	36.6	4	0
6	Locked	36.3	4	0
7	Locked	36.6	5	0
8	Locked	36.3	0	0
9	Locked	36.3	0	0
10	Locked	36.6	5	0
11	Locked	36.3	0	0
12	Locked	37.3	0	0
13	Locked	37.3	6	0
14	Locked	37.3	5	0
15	Locked	37.6	4	0
16	Locked	37.6	5	0
17	Locked	37.6	0	0
18	Locked	37.6	5	0
19	Locked	37.6	5	0
20	Locked	37.6	5	0
21	Locked	37.6	0	0
22	Locked	37.6	0	0
23	Locked	37.6	4	0
24	Locked	37.3	5	0

[ClMcGee]

So for now the issue seems to be gone, though I've noticed that latency spikes are now more frequent and higher overall.

[ClMcGee]

Post RS is back the same day

Downstream bonded channels

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

1	387000000	3.9	37	256 qam	32
2	203000000	3.9	36	256 qam	9
3	211000000	3.7	35	256 qam	10
4	219000000	4	36	256 qam	11
5	227000000	4	36	256 qam	12
6	235000000	3.9	36	256 qam	13
7	243000000	3.5	36	256 qam	14
8	251000000	3.4	36	256 qam	15
9	259000000	3.7	36	256 qam	16
10	267000000	4.1	36	256 qam	17
11	275000000	3.7	36	256 qam	18
12	283000000	3.7	37	256 qam	19
13	291000000	4	37	256 qam	20
14	299000000	4.6	37	256 qam	21
15	307000000	4.6	37	256 qam	22
16	315000000	4.5	37	256 qam	23
17	323000000	4.5	37	256 qam	24
18	331000000	4.6	37	256 qam	25
19	339000000	4.9	37	256 qam	26
20	347000000	4.6	37	256 qam	27
21	355000000	4.1	37	256 qam	28
22	363000000	4.1	37	256 qam	29
23	371000000	4.3	37	256 qam	30
24	379000000	4.3	37	256 qam	31

Downstream bonded channels

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

1	Locked	37.3	22	27
2	Locked	36.3	74	32
3	Locked	35.7	86	30
4	Locked	36.3	56	32
5	Locked	36.6	49	37
6	Locked	36.6	50	32
7	Locked	36.3	42	35
8	Locked	36.6	37	28
9	Locked	36.3	43	33
10	Locked	36.6	41	31
11	Locked	36.3	39	37
12	Locked	37.3	38	31
13	Locked	37.3	32	28
14	Locked	37.3	34	27
15	Locked	37.6	40	25
16	Locked	37.3	38	26
17	Locked	37.6	44	24
18	Locked	37.3	43	26
19	Locked	37.6	42	25
20	Locked	37.6	48	27
21	Locked	37.6	48	29
22	Locked	37.6	43	24
23	Locked	37.6	29	25
24	Locked	37.6	28	25

[ClMcGee]

Upstream bonded channels

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

1	46199998	40	5120	64 qam	3
2	32599974	39	5120	64 qam	5
3	39400019	39	5120	64 qam	4
4	53700004	40.5	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