Errors and Timeouts

[mattymatt1980]

Just now, my internet started “buffering” on Netflix which it never does (I’m on the 1GB service, using a Hub 5) so thought I would check my logs and noticed lots of T3 errors and critical messages. Can someone pls explain what I need to do as I don’t understand it. I was getting T3 errors before and when I rebooted they all went away but slowly creep back in. I have a broadband monitor set up which I have attached as well as the logs. Please advise accordingly. Logs on messages below. Thanks all.  

https://www.thinkbroadband.com/broadband/monitoring/quality/share/88b2215f41ff6a289f376f4055dd348fae...

[mattymatt1980]

3.0 Downstream channels

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

1	147000000	6.2	40	QAM 256	2
2	139000000	6.1	40	QAM 256	1
3	155000000	6.1	40	QAM 256	3
4	163000000	6	40	QAM 256	4
5	171000000	5.7	40	QAM 256	5
6	179000000	5.8	40	QAM 256	6
7	187000000	5.8	40	QAM 256	7
8	195000000	6.1	40	QAM 256	8
9	203000000	5.8	40	QAM 256	9
10	211000000	6	40	QAM 256	10
11	219000000	5.8	40	QAM 256	11
12	227000000	5.7	40	QAM 256	12
13	235000000	5.7	40	QAM 256	13
14	243000000	5.6	40	QAM 256	14
15	251000000	5.5	40	QAM 256	15
16	259000000	5.4	40	QAM 256	16
17	267000000	5.6	40	QAM 256	17
18	275000000	5.5	40	QAM 256	18
19	283000000	5.7	40	QAM 256	19
20	291000000	5.5	40	QAM 256	20
21	299000000	6.2	40	QAM 256	21
22	307000000	6.6	40	QAM 256	22
23	315000000	7	41	QAM 256	23
24	323000000	6.6	41	QAM 256	24
25	363000000	6.2	41	QAM 256	25
26	371000000	6.1	40	QAM 256	26
27	379000000	6	40	QAM 256	27
28	387000000	6.3	40	QAM 256	28
29	395000000	6.1	41	QAM 256	29
30	403000000	6.1	41	QAM 256	30
31	411000000	5.5	41	QAM 256	31

3.0 Downstream channels

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

1	Locked	40	1513125	452613
2	Locked	40	1210319	459351
3	Locked	40	1415268	302629
4	Locked	40	1329901	133803
5	Locked	40	2404475	82057
6	Locked	40	3589749	37201
7	Locked	40	788440	41116
8	Locked	40	397149	38345
9	Locked	40	329238	26694
10	Locked	40	287980	34659
11	Locked	40	256458	25120
12	Locked	40	248912	28550
13	Locked	40	277605	30296
14	Locked	40	200960	22047
15	Locked	40	215943	29287
16	Locked	40	149532	20117
17	Locked	40	126839	20063
18	Locked	40	135147	26522
19	Locked	40	94993	15124
20	Locked	40	108747	25908
21	Locked	40	82406	19569
22	Locked	40	61599	19055
23	Locked	41	66645	23592
24	Locked	41	59352	20947
25	Locked	41	47384	19837
26	Locked	40	44963	21044
27	Locked	40	43532	22478
28	Locked	40	42252	24790
29	Locked	41	45189	27568
30	Locked	41	42170	25364
31	Locked	41	33702	18968

3.1 Downstream channels

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

159

94

4K

1840

QAM 4096

1108

3.1 Downstream channels

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

159

Locked

41

2.2

383043216

22987

[mattymatt1980]

3.0 Upstream channels

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

0	49600000	47	5120	QAM 32	1
1	43100000	46.8	5120	QAM 32	2
2	36600000	47	5120	QAM 32	3
3	30100000	47	5120	QAM 32	4
4	23600000	46.8	5120	QAM 32	5

3.0 Upstream channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

0	ATDMA	0	2	72	0
1	ATDMA	0	2	90	0
2	ATDMA	0	2	72	0
3	ATDMA	0	2	72	0
4	ATDMA	0	2	72	0

3.1 Upstream channels

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

6

10

41.0

2K

QAM 256

3.1 Upstream channels

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

6

OFDMA

200

74000000

12

0

[mattymatt1980]

Network Log

Time Priority Description

08-11-2023 20:14:53	notice	CM-STATUS message sent. Event Type Code: 24; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
08-11-2023 20:13:30	notice	CM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
08-11-2023 20:13:24	critical	16 consecutive T3 timeouts while trying to range on upstream channel 2;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
08-11-2023 20:13:24	critical	Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
08-11-2023 20:13:24	critical	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
08-11-2023 20:13:24	critical	Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
08-11-2023 20:13:24	critical	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
08-11-2023 20:13:24	critical	16 consecutive T3 timeouts while trying to range on upstream channel 0;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
08-11-2023 20:13:24	critical	16 consecutive T3 timeouts while trying to range on upstream channel 4;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
08-11-2023 20:13:24	critical	Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
08-11-2023 20:13:24	critical	Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
08-11-2023 20:13:24	critical	16 consecutive T3 timeouts while trying to range on upstream channel 3;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
08-11-2023 20:13:24	critical	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
08-11-2023 20:13:12	critical	16 consecutive T3 timeouts while trying to range on upstream channel 1;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
08-11-2023 20:13:12	critical	Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
08-11-2023 20:13:12	critical	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
08-11-2023 20:13:01	critical	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
08-11-2023 20:13:00	notice	CM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
08-11-2023 20:12:54	critical	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
08-11-2023 20:12:45	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;
08-11-2023 20:12:45	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;
08-11-2023 19:53:44	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;
08-11-2023 19:53:44	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;
08-11-2023 19:43:39	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;
08-11-2023 19:43:39	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;
08-11-2023 19:33:33	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;
08-11-2023 19:33:33	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;
08-11-2023 19:26:38	critical	Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
08-11-2023 19:26:38	critical	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
08-11-2023 19:26:38	critical	16 consecutive T3 timeouts while trying to range on upstream channel 4;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
08-11-2023 19:26:18	critical	Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
08-11-2023 19:26:18	critical	16 consecutive T3 timeouts while trying to range on upstream channel 3;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

[Chris_W1]

I have checked the area Matt and can confirm that there is an SNR outage and this is due to be resolved on the 15th November 2023 - The fault ref is F011016336 - Chris. 

[mattymatt1980]

Thanks for this. I have still been experiencing internet blackouts and buffering. I was watching Netflix last night and all of a sudden it started buffering for ages then an error message came up to say I had been disconnected from the internet. It took a while to reconnect afterwards.  Today, the same happened on YouTube. I looked at the Hub5 and it was flashing red. It did reconnect itself after about 10 mins but it becoming a nuisance now. I do think something is not quite right with the Hub. An engineer came out a while ago due to the same issues but didn’t really do much. He said he didn’t know why it kept timing out or losing internet. Can someone please look into this as it’s getting frustrating now. Many thanks. 

[mattymatt1980]

I’ve just checked the upload log again and getting consistent T3 errors again??

Network Log

Time Priority Description

19-11-2023 10:35:43	critical	16 consecutive T3 timeouts while trying to range on upstream channel 3;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-11-2023 10:35:43	critical	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-11-2023 10:35:43	critical	Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-11-2023 10:35:23	critical	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-11-2023 10:35:23	critical	Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-11-2023 10:35:23	critical	16 consecutive T3 timeouts while trying to range on upstream channel 2;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-11-2023 10:35:03	critical	Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-11-2023 10:35:03	critical	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-11-2023 10:35:03	critical	16 consecutive T3 timeouts while trying to range on upstream channel 1;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-11-2023 10:34:43	critical	Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-11-2023 10:34:43	critical	16 consecutive T3 timeouts while trying to range on upstream channel 0;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-11-2023 10:32:43	critical	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-11-2023 10:32:23	critical	16 consecutive T3 timeouts while trying to range on upstream channel 4;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-11-2023 10:32:23	critical	Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-11-2023 10:31:24	critical	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-11-2023 10:16:04	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;
19-11-2023 10:16:04	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;
19-11-2023 10:15:09	notice	US profile assignment change. US Chan ID: 6; Previous Profile: 13; New Profile: 11 13.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-11-2023 10:15:09	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;
19-11-2023 10:15:06	notice	REGISTRATION COMPLETE - Waiting for Operational status
19-11-2023 10:14:59	warning	Dynamic Range Window violation
19-11-2023 10:14:59	warning	RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-11-2023 10:14:59	warning	RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-11-2023 10:14:59	warning	REG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-11-2023 10:14:59	warning	Dynamic Range Window violation
19-11-2023 10:14:59	warning	RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-11-2023 10:14:59	warning	RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-11-2023 10:14:59	warning	Dynamic Range Window violation
19-11-2023 10:14:59	warning	Dynamic Range Window violation
19-11-2023 10:14:54	notice	DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-11-2023 10:14:47	warning	DHCP WARNING - Non-critical field invalid in response ;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-11-2023 10:14:45	notice	Honoring MDD; IP provisioning mode = IPv4

[jpeg1]

Check on 0800 561 0061 to see if a fault is still reported in your area.

Your problems are due to a lot of noise on the signal. This is due to a fault either outside on the network, or inside your house. Check that all your coax connections are done up tight. 

[mattymatt1980]

Just called the number and it says there are no issues with broadband in my area. Could this be due to a faulty Hub? All my wires are in tight.  I’ve rebooted many times and it settles down but then creeps back up again. Don’t seem to be getting anywhere. Last engineer that came out didn’t really seem to know what he was doing and told me to unplug my Ethernet cables for a few days and then plug them back in, which didn’t make any difference. 

[Gareth_L]

Hello mattymatt1980,

Thank you very much for joining our Community.
Can I just apologise for continued issues with your broadband connection
We can run a few tests from here and check on your equipment.
Sadly its not showing anything wrong, So I will need to send you a private message to gain account access and run further tests.
If you can check the envelope top right of your screen that would be great. 
Regards     
Gareth_L