Service dropouts, speed bumps, time outs, RS Errors

[GrumpyOldAVGuy]

I've been having intermittent Internet over ethernet and WiFi. I have been getting this issue intermittently everyday for around three weeks. I have checked all Coax connections and reseated them which helped a little with the RS errors, rebooted the Hub3, but the underlying problem still persists. anyone have any ideas? All help greatly appreciated.

IGNORE the 23 minute outtage at 01.03am - That was me checking coax connections.

Downstream bonded channels

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

1	323000000	1.2	40	256 qam	24
2	139000000	2.9	40	256 qam	1
3	147000000	2.7	38	256 qam	2
4	155000000	2.5	40	256 qam	3
5	163000000	2.5	40	256 qam	4
6	171000000	2.7	40	256 qam	5
7	179000000	2.5	40	256 qam	6
8	187000000	2.7	38	256 qam	7
9	195000000	2.7	40	256 qam	8
10	203000000	2.7	40	256 qam	9
11	211000000	2.5	40	256 qam	10
12	219000000	2.5	36	256 qam	11
13	227000000	2.4	38	256 qam	12
14	235000000	2.2	40	256 qam	13
15	243000000	2	40	256 qam	14
16	251000000	1.9	40	256 qam	15
17	259000000	1.5	40	256 qam	16
18	267000000	1.5	40	256 qam	17
19	275000000	1.4	40	256 qam	18
20	283000000	1	40	256 qam	19
21	291000000	1	40	256 qam	20
22	299000000	1	40	256 qam	21
23	307000000	0.7	40	256 qam	22
24	315000000	1	40	256 qam	23

Downstream bonded channels

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

1	Locked	40.9	5	0
2	Locked	40.3	56	0
3	Locked	40.9	5	0
4	Locked	40.3	27	0
5	Locked	40.9	13	0
6	Locked	40.3	10	0
7	Locked	40.3	6	0
8	Locked	40.3	6	0
9	Locked	40.9	7	0
10	Locked	40.3	5	0
11	Locked	40.3	10	0
12	Locked	36.6	6	0
13	Locked	38.6	12	0
14	Locked	40.3	186	9
15	Locked	40.9	97	0
16	Locked	40.3	7	0
17	Locked	40.3	11	0
18	Locked	40.3	7	0
19	Locked	40.3	5	0
20	Locked	40.3	5	0
21	Locked	40.3	27	0
22	Locked	40.3	7	0
23	Locked	40.3	6	0
24	Locked	40.3	7	0

[GrumpyOldAVGuy]

Upstream bonded channels

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

1	32599991	32	5120	64 qam	13
2	23600000	32	5120	64 qam	14
3	39400000	32	5120	64 qam	12
4	46199988	32	5120	64 qam	11
5	53699998	32	5120	64 qam	10
6	60299976	32	5120	64 qam	9

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
5	ATDMA	0	0	0	0
6	ATDMA	0	0	0	0

[GrumpyOldAVGuy]

General Configuration

Network access	Allowed
Maximum Number of CPEs	1
Baseline Privacy	Enabled
DOCSIS Mode	Docsis30
Config file	a69834ncxv9873254k;fg87ds

Primary Downstream Service Flow

SFID	22212
Max Traffic Rate	402500089
Max Traffic Burst	42600
Min Traffic Rate	0

Primary Upstream Service Flow

SFID	22211
Max Traffic Rate	38500089
Max Traffic Burst	42600
Min Traffic Rate	0
Max Concatenated Burst	42600
Scheduling Type	BestEffort

[GrumpyOldAVGuy]

Network Log

Time Priority Description

22/10/2024 15:57:42	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:31:13	notice	LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:23:26	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:04:51	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=3.0;
22/10/2024 01:01:56	Warning!	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:01:52	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:01:52	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:01:52	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:01:52	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:01:52	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:01:52	Warning!	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:01:50	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:01:50	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:01:49	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:01:48	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:01:47	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:01:47	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:01:47	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:01:47	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:01:46	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

[GrumpyOldAVGuy]

[GrumpyOldAVGuy]

[GrumpyOldAVGuy]

[GrumpyOldAVGuy]

[Carley_S]

Hi @GrumpyOldAVGuy 

Welcome to the community forums.

Sorry to hear you're having service issues. I've checked the systems on our side and cannot see anything at this time that might be causing this. I can see that you've already a visit arranged to investigate this further. Please do keep us posted and let us know if you are having any further issues or have any questions at all. We'll be here to help on the community forums if needed

[GrumpyOldAVGuy]

Hi Carley,

Thanks for coming back to me.

I am still experiencing some slow down and a very significant number of pre RS Errors and a number of post RS Errors. 

I'm running analysis software on a computer connected directly by cable to the HUB 3 and it is showing considerably high latencies (averaging around 35ms but running as high as 180ms with around 4 - 5 % packet drop.

FYI the Hub3 doesn't handle our WiFi connections - that's handled via an enterprise grade WAP.

I've a few more things to check out to be sure but I'm veering towards it being an issue with the fibre as the problems have only occurred since Street lighting engineers carried out work on the street and excavated a cable trench directly intersecting the fiber ducts! This of course may be a coincidence.

As you may have guessed from my moniker I've a reasonable knowledge of networks, and fibre installation as its something I do frequently in my day job  😀 

Thanks again,

Jim