Hub 4 - slowly pulsing white light / loss of broadband
Area 30/DL14. Happened a few times now, with the same outcome. Speed and reliability fine, then:
- The telltale sign of WiFi disconnecting from the internet on a device I happen to be using
- Hub 4's normally steady white band is now pulsating slowly
- I try to log onto the Hub 4's web server page (via wifi, or wired connection) and it hangs after logon
- I turn the Hub 4 off and back on again using its switch and connectivity is restored
- Rinse, repeat after a day or so.
I check VM service status, which tells me there's a TV issue in DL14 9LF. Thanks for your patience while we work to fix things as quick as we can, but not Broadband problems. Running the Network Diagnostic Tool on the Hub 4's web server page, tells me that everything is ok, temperature fine, etc. It is noticeably hot to the touch, though. 🤔
Logs also tell a story: repeated 'SYNC Timing Synchronization failure - Loss of Sync' messages. I can't begin to fathom these out, but discovered the helpful answer in this link seems to indicate the problem is possibly not directly caused by my router :
Below is a section of those logs:
| Wed 12/04/2023 19:33:55 | 6 | CM-STATUS message sent. Event Type Code: 5; Chan ID: 5; 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; |
| Wed 12/04/2023 19:33:28 | 3 | No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1; |
| Wed 12/04/2023 19:27:47 | 6 | CM-STATUS message sent. Event Type Code: 5; Chan ID: 5; 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; |
| Wed 12/04/2023 19:27:44 | 3 | SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1; |
| Wed 12/04/2023 19:27:42 | 6 | CM-STATUS message sent. Event Type Code: 5; Chan ID: 5; 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; |
| Wed 12/04/2023 19:27:42 | 3 | SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1; |
| Wed 12/04/2023 19:27:29 | 6 | CM-STATUS message sent. Event Type Code: 5; Chan ID: 5; 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; |
| Wed 12/04/2023 19:27:25 | 3 | SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1; |
| Wed 12/04/2023 19:07:35 | 6 | CM-STATUS message sent. Event Type Code: 5; Chan ID: 2; 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; |
| Wed 12/04/2023 19:07:31 | 3 | SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1; |
| Wed 12/04/2023 19:00:39 | 6 | CM-STATUS message sent. Event Type Code: 5; Chan ID: 1; 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; |
| Wed 12/04/2023 19:00:38 | 3 | SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1; |
My uneducated guess is that external equipment problems are causing my router to work harder than normal and possibly causing it to fall over from time to time.
Any assistance welcome.
Thanks,
SM
Hey - my original problem was due to a kinked white coax cable. Was patiently diagnosed by an engineer on site with his meter. Replaced the cable and all was well again. Hope that helps.
