Downstream Post RS Errors

[worf105]

Hello all,

I have been monitoring my connection over the last few day/weeks and have now become concerned about the Post RS errors that are increasing each day.

Snippet from Log:

[John_GS]

Hi @worf105 

Thanks for posting and welcome back to the community.

Are you currently experiencing any service issues? The reason I ask, there's no area outages showing here. Please do let us know if so and we can assist further.

Best wishes.

[worf105]

Cheers John,

I Have been monitoring this for another week and the pre and post errors are climbing still.  Now getting some T1 to T4 errors on my uploads. The connection seems stable enough with some blips here and there. The last time I seen these the engineer replaces inside cables and went outside to street and done something with the taps.

[Martin_N]

When the engineer did those changes did the service improve?

^Martin

[worf105]

Yes indeed 

[worf105]

Increasing again:

Downstream bonded channels

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

1	Locked	39	297	0
2	Locked	37	435	7
3	Locked	37	450	0
4	Locked	37	450	0
5	Locked	37	482	3
6	Locked	37	420	0
7	Locked	38	405	0
8	Locked	38	410	0
9	Locked	38	422	0
10	Locked	38	430	0
11	Locked	38	400	0
12	Locked	38	415	0
13	Locked	38	389	0
14	Locked	38	387	0
15	Locked	38	392	0
16	Locked	38	370	0
17	Locked	38	329	0
18	Locked	38	246	0
19	Locked	38	222	0
20	Locked	38	290	0
21	Locked	38	285	0
22	Locked	39	283	0
23	Locked	39	290	0
24	Locked	39	300	0
25	Locked	39	308	12
26	Locked	39	282	0
27	Locked	39	329	5
28	Locked	39	375	23
29	Locked	40	295	104
30	Locked	39	312	164
31	Locked	39	334	64

Downstream bonded channels

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

1	331000000	5.1	39	QAM 256	25
2	139000000	8.5	37	QAM 256	1
3	147000000	8.3	37	QAM 256	2
4	155000000	7.8	37	QAM 256	3
5	163000000	7.5	37	QAM 256	4
6	171000000	7.3	37	QAM 256	5
7	179000000	7	38	QAM 256	6
8	187000000	6.9	38	QAM 256	7
9	195000000	7	38	QAM 256	8
10	203000000	6.8	38	QAM 256	9
11	211000000	6.7	38	QAM 256	10
12	219000000	6.4	38	QAM 256	11
13	227000000	5.8	38	QAM 256	12
14	235000000	5.3	38	QAM 256	13
15	243000000	5.1	38	QAM 256	14
16	251000000	4.7	38	QAM 256	15
17	259000000	4.7	38	QAM 256	16
18	267000000	4.6	38	QAM 256	17
19	275000000	5	38	QAM 256	18
20	283000000	5.2	38	QAM 256	19
21	291000000	5.4	38	QAM 256	20
22	299000000	5.4	39	QAM 256	21
23	307000000	5.4	39	QAM 256	22
24	315000000	5.3	39	QAM 256	23
25	323000000	5.2	39	QAM 256	24
26	339000000	5.2	39	QAM 256	26
27	347000000	4.9	40	QAM 256	27
28	355000000	4.8	39	QAM 256	28
29	363000000	4.7	40	QAM 256	29
30	371000000	4.1	39	QAM 256	30
31	379000000	3.8	39	QAM 256	31

[worf105]

Upstream bonded channels

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

0	49600000	38.3	5120	QAM 64	1
1	43100000	37.3	5120	QAM 64	2
2	36600000	36.3	5120	QAM 64	3
3	30100000	34.8	5120	QAM 64	4
4	23600000	34	5120	QAM 64	5

Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

0	ATDMA	0	1	0	0
1	ATDMA	0	1	0	0
2	ATDMA	0	1	2	0
3	ATDMA	0	1	0	0
4	ATDMA	0	1	25	3

[worf105]

Network Log

Time Priority Description

08-09-2023 18:28:04	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
08-09-2023 18:26:35	critical	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
08-09-2023 18:23:45	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
08-09-2023 18:23:20	critical	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
08-09-2023 03:25:50	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
08-09-2023 03:25:38	error	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
04-09-2023 15:25:34	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
04-09-2023 15:25:32	error	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
03-09-2023 21:52:01	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
03-09-2023 21:51:45	warning	TCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
03-09-2023 21:51:01	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
03-09-2023 21:50:45	warning	DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
03-09-2023 21:37:05	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
03-09-2023 21:36:34	warning	TCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
03-09-2023 21:35:38	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
03-09-2023 21:35:34	warning	DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
03-09-2023 21:22:05	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
03-09-2023 21:21:24	warning	TCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
03-09-2023 21:20:49	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
03-09-2023 21:20:24	warning	DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
03-09-2023 21:05:32	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
03-09-2023 13:59:16	notice	US profile assignment change. US Chan ID: 6; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
03-09-2023 13:59:16	warning	DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
03-09-2023 13:49:11	notice	US profile assignment change. US Chan ID: 6; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
03-09-2023 13:49:11	warning	DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
01-09-2023 21:29:17	notice	US profile assignment change. US Chan ID: 6; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
01-09-2023 21:29:17	warning	DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
01-09-2023 21:19:13	notice	US profile assignment change. US Chan ID: 6; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
01-09-2023 21:19:13	warning	DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
01-09-2023 13:35:23	notice	US profile assignment change. US Chan ID: 6; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
01-09-2023 13:35:23	warning	DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
01-09-2023 12:27:23	warning	DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

[worf105]

Any help will be appreciated.

[Matthew_ML]

Hey worf105, thank you for reaching out and I am sorry to see you are having some connection issues.

I have taken a look and I can see there are some short term connection issues which should of been resolved by now over the weekend.

How has the connection been, has it improved? Cheers