Internet keeps dropping out

[metalmatt]

For the last week my Internet has been dropping off for 30 seconds then it comes back on again. I have a hub 5 and keep getting 16 consecutive T3 timeouts plus US profile assignment change. I have had loads of these errors today. Can someone look onto this please? Thanks. 

[jbrennand]

see this..

________

Is it happening on cable connected devices as well as wifi ones ? 

Then... Navigate to these “data 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 pages. 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

[metalmatt]

I've tightened the cable and powered down the hub 5 I'll see how it goes... Cheers

[metalmatt]

I have posted my stats:

3.0 Downstream channels

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

1 323000000 6.7 40 QAM 256 24

2 179000000 7.9 40 QAM 256 6

3 187000000 7.5 40 QAM 256 7

4 195000000 7.6 40 QAM 256 8

5 203000000 7.1 40 QAM 256 9

6 211000000 7.2 40 QAM 256 10

7 219000000 6.9 40 QAM 256 11

8 227000000 6.8 40 QAM 256 12

9 235000000 6.6 40 QAM 256 13

10 243000000 6.2 40 QAM 256 14

11 251000000 5.9 40 QAM 256 15

12 259000000 5.4 40 QAM 256 16

13 267000000 5.1 39 QAM 256 17

14 275000000 5.3 39 QAM 256 18

15 283000000 6 40 QAM 256 19

16 291000000 6.7 40 QAM 256 20

17 299000000 6.9 40 QAM 256 21

18 307000000 6.9 40 QAM 256 22

19 315000000 6.9 40 QAM 256 23

20 331000000 6.8 40 QAM 256 25

21 339000000 6.9 39 QAM 256 26

22 347000000 6.9 40 QAM 256 27

23 355000000 6.7 40 QAM 256 28

24 363000000 6.6 40 QAM 256 29

25 371000000 6.5 40 QAM 256 30

26 379000000 6.2 40 QAM 256 31

27 387000000 5.9 40 QAM 256 32

28 395000000 5.2 40 QAM 256 33

29 403000000 5 40 QAM 256 34

30 411000000 4.9 40 QAM 256 35

31 419000000 5 40 QAM 256 36

3.0 Downstream channels

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

1 Locked 40 13 0

2 Locked 40 8 0

3 Locked 40 7 0

4 Locked 40 9 0

5 Locked 40 11 0

6 Locked 40 11 0

7 Locked 40 5 0

8 Locked 40 5 0

9 Locked 40 10 0

10 Locked 40 8 0

11 Locked 40 10 0

12 Locked 40 13 0

13 Locked 39 7 0

14 Locked 39 8 0

15 Locked 40 10 0

16 Locked 40 7 0

17 Locked 40 8 0

18 Locked 40 3 0

19 Locked 40 9 0

20 Locked 40 11 0

21 Locked 39 7 0

22 Locked 40 6 0

23 Locked 40 11 0

24 Locked 40 5 0

25 Locked 40 8 0

26 Locked 40 8 0

27 Locked 40 9 0

28 Locked 40 8 0

29 Locked 40 14 0

30 Locked 40 9 0

31 Locked 40 12 0

3.1 Downstream channels

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

37 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)

37 Locked 40 1.1 308230530 0

[metalmatt]

3.0 Upstream channels

Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID
0 49600000 41.3 5120 QAM 64 1
1 43100000 41.3 5120 QAM 64 2
2 36600000 41 5120 QAM 64 3
3 30100000 40.5 5120 QAM 64 4
4 23600000 40 5120 QAM 64 9
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
10 11 37.0 2K QAM 256
3.1 Upstream channels

Channel Channel Type Number of Active Subcarriers First Active Subcarrier (Hz) T3 Timeouts T4 Timeouts
10 OFDMA 220 74000000 0 0

[metalmatt]

Here is my log I restarted and it cleared all the 16 consecutive T3 timeouts

Time Priority Description

05-02-2024 13:13:22 notice REGISTRATION COMPLETE - Waiting for Operational status
05-02-2024 13:13:18 notice US profile assignment change. US Chan ID: 10; Previous Profile: 13; New Profile: 11 13.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
05-02-2024 13:13:13 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;
05-02-2024 13:13:09 notice TLV-11 - unrecognized OID;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
05-02-2024 13:13:06 warning DHCP WARNING - Non-critical field invalid in response ;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
05-02-2024 13:13:04 notice Honoring MDD; IP provisioning mode = IPv4
05-02-2024 13:12:52 critical SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
05-02-2024 13:12:50 critical Cable Modem Reboot because of - HW or Power-On Reset
30-01-2024 14:21:28 critical SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
30-01-2024 14:21:25 critical Cable Modem Reboot because of - HW or Power-On Reset
19-01-2024 12:55:35 critical SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-01-2024 12:55:34 critical Cable Modem Reboot because of - HW or Power-On Reset
06-01-2024 18:26:05 critical Cable Modem Reboot because of - HW or Power-On Reset
06-01-2024 18:26:05 critical SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
28-12-2023 15:02:23 critical Cable Modem Reboot because of - HW or Power-On Reset
28-12-2023 15:02:23 critical SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
08-12-2023 12:43:45 critical SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
08-12-2023 12:43:43 critical Cable Modem Reboot because of - HW or Power-On Reset
28-11-2023 16:03:22 critical SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
28-11-2023 16:03:21 critical Cable Modem Reboot because of - HW or Power-On Reset
24-11-2023 14:06:25 critical SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
24-11-2023 14:06:23 critical Cable Modem Reboot because of - HW or Power-On Reset
23-11-2023 10:00:15 critical Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
23-11-2023 10:00:15 critical 16 consecutive T3 timeouts while trying to range on upstream channel 8;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
20-11-2023 16:02:25 critical Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
18-11-2023 13:18:20 critical Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
17-11-2023 12:42:46 critical SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
17-11-2023 12:42:43 critical Cable Modem Reboot because of - HW or Power-On Reset
17-11-2023 02:40:02 critical No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
17-11-2023 02:39:21 critical No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
17-11-2023 02:33:58 critical SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
17-11-2023 02:33:52 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;

[jbrennand]

On ethernet connections as well as wifi ones ?

Also, If you haven’t already, set up a free, secure and “offlsite” - “Broadband Quality Monitor” to continually monitor the state of your connection and record any true network dropouts , latency issues, packet drops, etc - it will thus allow you to differentiate between those and simple wifi dropouts. It does it 24/7/365 and it keeps a visual record of any/all of your network disconnections, useful data to have to match to the Network logs (in your Hub settings) and also in discussions with VM - note it will take a few hours to start seeing a sensible picture - post up the “link” to the “share live graph”. Click the lower link (Share Live Graph) then, click generate. Copy the text in the Direct Link box, beware, there may be more text than you can see. On here click the Link icon (2 links chain to the left of the camera icon) In the URL box paste the link you copied and then click OK
https://www.thinkbroadband.com/broadband/monitoring/quality

[metalmatt]

I have the hub 5 in modem mode my router is a Archer AX72 pro and I have disabled Respond to Pings from WAN I used to have one set up via think broadband when I had a hub 3. 

[metalmatt]

Its just happened again at 08:21 Internet goes off for 30 seconds. Its been 9 days since the last one.

Time Priority Description

14-02-2024 08:21:29	critical	Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
14-02-2024 08:21:29	critical	16 consecutive T3 timeouts while trying to range on upstream channel 8;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

[metalmatt]

Good Morning

I have set up a live monitor now. There were 16 consecutive T3 timeouts yesterday at 13:43, however the internet did not go off.

Here is the link to the monitor.