Virgin Hub 5 Keeps Disconnecting
Hi, We had a Virgin Hub 4 for years, configured in modem only mode and connected via ethernet cable to the primary Google WiFi puck that acts as a router and provides WiFi to the rest of the house. ...
Forum Discussion
On the 3.1 Downstream channel the power level and Uncorrectable errors are looking less than ideal. Power off the hub, check that all cable connections to the wall socket are tight and reboot. Repost your stats and network log after a day so we can see how fast the Uncorrectable errors build up.
Thanks for the advice Alessandro. I have powered off the Virgin hub and rebooted it, I'll post the logs here tomorrow.
You say "On the 3.1 Downstream channel the power level and Uncorrectable errors are looking less than ideal." For my own learning, what values/ranges should those levels normally be within, and when they are not what effect does it have on the Virgin hub?
Also, is it worth switching the Virgin hub from modem mode to router mode for a couple of days, just so I can set up a BQM to test connectivity?
Here are the logs following a reboot 24 hours ago
DOWNSTREAM
3.0 Downstream channels
Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID1 306000000 8 42 QAM 256 22 2 138000000 6.8 42 QAM 256 1 3 146000000 6.9 42 QAM 256 2 4 154000000 7 42 QAM 256 3 5 162000000 7 42 QAM 256 4 6 170000000 7 42 QAM 256 5 7 178000000 7 42 QAM 256 6 8 186000000 7.2 42 QAM 256 7 9 194000000 7.5 42 QAM 256 8 10 202000000 7.4 42 QAM 256 9 11 210000000 7.7 42 QAM 256 10 12 218000000 7.8 42 QAM 256 11 13 226000000 7.9 42 QAM 256 12 14 234000000 8 42 QAM 256 13 15 242000000 7.8 42 QAM 256 14 16 250000000 7.7 42 QAM 256 15 17 258000000 8 42 QAM 256 16 18 266000000 8 42 QAM 256 17 19 274000000 8 42 QAM 256 18 20 282000000 8 42 QAM 256 19 21 290000000 8 42 QAM 256 20 22 298000000 8 42 QAM 256 21 23 314000000 7.9 42 QAM 256 23 24 322000000 7.8 42 QAM 256 24 25 330000000 7.6 42 QAM 256 25 26 338000000 7.7 42 QAM 256 26 27 346000000 7.8 42 QAM 256 27 28 354000000 7.8 42 QAM 256 28 29 362000000 7.9 42 QAM 256 29 30 370000000 7.9 42 QAM 256 30 31 378000000 8 42 QAM 256 31 3.0 Downstream channels
Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors1 Locked 42 3 0 2 Locked 42 4 0 3 Locked 42 5 0 4 Locked 42 5 0 5 Locked 42 8 0 6 Locked 42 8 0 7 Locked 42 12 0 8 Locked 42 9 0 9 Locked 42 8 0 10 Locked 42 4 0 11 Locked 42 2 0 12 Locked 42 2 0 13 Locked 42 2 0 14 Locked 42 2 0 15 Locked 42 2 0 16 Locked 42 2 0 17 Locked 42 2 0 18 Locked 42 2 0 19 Locked 42 2 0 20 Locked 42 2 0 21 Locked 42 2 0 22 Locked 42 2 0 23 Locked 42 2 0 24 Locked 42 2 0 25 Locked 42 2 0 26 Locked 42 2 0 27 Locked 42 2 0 28 Locked 42 2 0 29 Locked 42 2 0 30 Locked 42 2 0 31 Locked 42 2 0 3.1 Downstream channels
Channel Channel Width (MHz) FFT Type Number of Active Subcarriers Modulation (Active Profile) First Active Subcarrier (Hz)33 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)33 Locked 44 9.8 47945841 2770 UPSTREAM
3.0 Upstream channels
Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID0 49600000 46.3 5120 QAM 64 1 1 43100000 46.5 5120 QAM 64 2 2 36600000 46.5 5120 QAM 64 3 3 30100000 46.3 5120 QAM 64 4 4 23600000 46 5120 QAM 64 9 3.0 Upstream channels
Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts0 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 Modulation10 10.4 41.5 2K QAM 256 3.1 Upstream channels
Channel Channel Type Number of Active Subcarriers First Active Subcarrier (Hz) T3 Timeouts T4 Timeouts10 OFDMA 208 74000000 0 0 NETWORK LOG
Time Priority Description05-10-2024 07:26:35 notice REGISTRATION COMPLETE - Waiting for Operational status 05-10-2024 07:26:32 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; 05-10-2024 07:26:26 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; 05-10-2024 07:26:23 notice TLV-11 - unrecognized OID;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1; 05-10-2024 07:26:21 warning DHCP WARNING - Non-critical field invalid in response ;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1; 05-10-2024 07:26:19 notice Honoring MDD; IP provisioning mode = IPv4 05-10-2024 07:25:55 critical SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1; 05-10-2024 07:25:55 critical Cable Modem Reboot because of - HW or Power-On Reset 03-10-2024 19:36:33 critical SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1; 03-10-2024 19:36:32 critical Cable Modem Reboot because of - HW or Power-On Reset 03-10-2024 05:27:50 critical SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1; 03-10-2024 05:27:49 critical Cable Modem Reboot because of - HW or Power-On Reset 28-09-2024 13:58:24 critical Cable Modem Reboot because of - Erouter Mode Change 28-09-2024 13:58:24 critical SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1; 28-09-2024 13:29:37 critical SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1; 28-09-2024 13:29:36 critical Cable Modem Reboot because of - Reboot Timezone Change 28-09-2024 13:26:26 critical SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1; 28-09-2024 13:26:25 critical Cable Modem Reboot because of - pin-reset 28-09-2024 13:26:23 critical SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1; 28-09-2024 13:26:22 critical Cable Modem Reboot because of - pin-reset