Broadband dropping out and high latency DA5

[mont999]

Hi, I am trying to raise a fault online for my poor broadband connection that shows on the below graph starting around 05:00 9/10.

I've checked all connections and re-started the hub but no change.

Logs from router below showing recent events, 

If somebody could help please with any connection checks this would be great.

0-10-2024 15:51:36	notice	CM-STATUS message sent. Event Type Code: 4; Chan ID: 5 6 7; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
10-10-2024 15:51:36	notice	CM-STATUS message sent. Event Type Code: 5; Chan ID: 6; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
10-10-2024 15:51:13	warning	MDD message timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

Cable Modem StatusItem Status TypeChannel Overview Downstream Upstream

Cable Modem Status	Online	DOCSIS 3.0
Primary downstream channel	Locked	SC-QAM
DOCSIS 3.0 channels	31	5
DOCSIS 3.1 channels	1	1

3.0 Downstream channels

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

1	306000000	2.7	41	QAM 256	22
2	138000000	2.9	41	QAM 256	1
3	146000000	3.2	41	QAM 256	2
4	162000000	2.9	41	QAM 256	4
5	170000000	2.8	41	QAM 256	5
6	178000000	2.6	41	QAM 256	6
7	186000000	2.7	41	QAM 256	7
8	194000000	2.9	41	QAM 256	8
9	202000000	2.9	41	QAM 256	9
10	210000000	3.1	41	QAM 256	10
11	218000000	3.2	41	QAM 256	11
12	226000000	3	41	QAM 256	12
13	234000000	2.8	41	QAM 256	13
14	242000000	2.7	41	QAM 256	14
15	250000000	2.8	41	QAM 256	15
16	258000000	3	41	QAM 256	16
17	266000000	3.1	41	QAM 256	17
18	274000000	2.9	41	QAM 256	18
19	282000000	2.9	41	QAM 256	19
20	290000000	2.9	41	QAM 256	20
21	298000000	2.8	41	QAM 256	21
22	314000000	2.6	41	QAM 256	23
23	322000000	2.5	41	QAM 256	24
24	330000000	2.3	41	QAM 256	25
25	338000000	2.3	40	QAM 256	26
26	346000000	2.2	41	QAM 256	27
27	354000000	2.3	41	QAM 256	28
28	362000000	2.4	41	QAM 256	29
29	370000000	2.2	41	QAM 256	30
30	378000000	2.1	41	QAM 256	31
31	386000000	2.2	41	QAM 256	32

3.0 Downstream channels

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

1	Locked	41	521	0
2	Locked	41	997908	519867
3	Locked	41	1290154	728186
4	Locked	41	3756284	1151791
5	Locked	41	92754105	15115032
6	Locked	41	96344031	28494165
7	Locked	41	55877376	1789676
8	Locked	41	38265	26
9	Locked	41	3432	22
10	Locked	41	2329	24
11	Locked	41	1278	13
12	Locked	41	1647	19
13	Locked	41	3746	13
14	Locked	41	2066	19
15	Locked	41	788	13
16	Locked	41	632	18
17	Locked	41	311	23
18	Locked	41	217	15
19	Locked	41	571	1
20	Locked	41	1908	6
21	Locked	41	1964	21
22	Locked	41	68	0
23	Locked	41	52	0
24	Locked	41	57	1
25	Locked	40	57	0
26	Locked	41	49	0
27	Locked	41	47	0
28	Locked	41	39	0
29	Locked	41	41	0
30	Locked	41	29	0
31	Locked	41	44	0

3.1 Downstream channels

Channel Channel Width (MHz) FFT Type Number of Active Subcarriers Modulation (Active Profile) First Active Subcarrier (Hz)

33

92

4K

1800

QAM 4096

1128

3.1 Downstream channels

Channel ID Locked Status RxMER Data (dB) PLC Power (dBmV) Corrected errors (Active Profile) Uncorrectable errors (Active Profile)

33

Locked

41

0.7

631529023

0

3.0 Upstream channels

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

0	49600000	49.5	5120	QAM 64	5
1	43100000	48	5120	QAM 64	6
2	36600000	46.3	5120	QAM 64	7
3	30100000	51.5	5120	QAM 64	8
4	23600000	52	5120	QAM 64	11

3.0 Upstream channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

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

3.1 Upstream channels

Channel Channel Width (MHz) Power (dBmV) FFT Type Modulation

12

10.4

45.2

2K

QAM 256

3.1 Upstream channels

Channel Channel Type Number of Active Subcarriers First Active Subcarrier (Hz) T3 Timeouts T4 Timeouts

12

OFDMA

208

74000000

0

0

[legacy1]

more off then on😱

[mont999]

Well that's a turn up 😀 I unplugged all the physical connections to the Hub and the connection cleaned up straightaway. It's been lightening fast and stable for a couple of hours. There was me thinking the broadband monitor only monitored the external network performance to the hub. Thanks for your help. I'll cancel the next engineer visit and get playing with finding the culprit.

[legacy1]

So some device is doing a DoS?

[mont999]

After a bit of trial and error,  proved down to my CCTV DVR that's plugged into a powerline adapter,  after turning that off and on it cleared up. 

[Matthew_ML]

Hey mont999, thank you for reaching out with all these updates.

So just to confirm everything is working as it should be now?

[mont999]

Yes, all working good now