Connection bouncing intermittently, suspect DOCSIS 3.1 levels
Hi! Been a long time since I posted here! Been having an issue with my connection pretty much from when it was installed. It will intermittently start bouncing up and down - last night was particularly bad, with 26 interruptions in the space of an hour. Looking at the stats I think our DOCSIS 3.1 levels are out of spec and we have a fault - our PLC power is -15.5DBmV where I think the spec is like supposed to be -6 to +10DBmV. Full logs below! : 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 339000000 -6.5 39 QAM 256 26 2 139000000 0.3 40 QAM 256 1 3 147000000 0.2 40 QAM 256 2 4 155000000 0.5 40 QAM 256 3 5 163000000 0.9 40 QAM 256 4 6 171000000 -1.4 40 QAM 256 5 7 179000000 -1.9 40 QAM 256 6 8 187000000 -2.2 40 QAM 256 7 9 195000000 -2.2 40 QAM 256 8 10 203000000 -2.5 40 QAM 256 9 11 211000000 -2.8 40 QAM 256 10 12 219000000 -3.2 40 QAM 256 11 13 227000000 -3.9 40 QAM 256 12 14 235000000 -4 40 QAM 256 13 15 251000000 -4.6 40 QAM 256 15 16 259000000 -4.7 40 QAM 256 16 17 267000000 -4.8 40 QAM 256 17 18 275000000 -4.8 40 QAM 256 18 19 283000000 -4.9 40 QAM 256 19 20 291000000 -5.1 40 QAM 256 20 21 299000000 -5.3 40 QAM 256 21 22 307000000 -5.8 40 QAM 256 22 23 315000000 -5.9 40 QAM 256 23 24 323000000 -6.3 40 QAM 256 24 25 331000000 -6.4 40 QAM 256 25 26 347000000 -7 39 QAM 256 27 27 355000000 -6.9 40 QAM 256 28 28 363000000 -6.9 40 QAM 256 29 29 371000000 -7.3 39 QAM 256 30 30 379000000 -7.6 39 QAM 256 31 31 387000000 -8.3 39 QAM 256 32 3.0 Downstream channels Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors 1 Locked 39 88 0 2 Locked 40 35 0 3 Locked 40 36 0 4 Locked 40 33 0 5 Locked 40 19 0 6 Locked 40 63 0 7 Locked 40 112 0 8 Locked 40 41 0 9 Locked 40 30 0 10 Locked 40 36 0 11 Locked 40 26 0 12 Locked 40 23 0 13 Locked 40 28 0 14 Locked 40 37 0 15 Locked 40 30 0 16 Locked 40 46 0 17 Locked 40 69 0 18 Locked 40 73 0 19 Locked 40 65 0 20 Locked 40 34 0 21 Locked 40 28 0 22 Locked 40 53 0 23 Locked 40 59 0 24 Locked 40 72 0 25 Locked 40 73 0 26 Locked 39 111 0 27 Locked 40 102 0 28 Locked 40 104 0 29 Locked 39 177 0 30 Locked 39 223 0 31 Locked 39 398 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 35 -15.5 611240571 7827454 3.0 Upstream channels Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID 0 49600000 45.8 5120 QAM 64 1 1 43100000 45.8 5120 QAM 64 2 2 36600000 45.8 5120 QAM 64 3 3 30100000 45.8 5120 QAM 64 4 4 23600000 45.8 5120 QAM 64 5 3.0 Upstream channels Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts 0 ATDMA 0 0 5 0 1 ATDMA 0 0 3 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 6 10.4 41.2 2K QAM 256 3.1 Upstream channels Channel Channel Type Number of Active Subcarriers First Active Subcarrier (Hz) T3 Timeouts T4 Timeouts 6 OFDMA 208 74000000 0 0 General Configuration Network accessMaximum Number of CPEsBaseline PrivacyDOCSIS ModeConfig file Allowed 1 Enabled 3.1 cmreg-vmdg660-bbt076-b.cm Primary Downstream Service Flow SFIDMax Traffic RateMax Traffic BurstMin Traffic Rate 35890 1230000450 bps 42600bytes 0 bps Primary Upstream Service Flow SFIDMax Traffic RateMax Traffic BurstMin Traffic RateMax Concatenated BurstScheduling Type 35889 110000274 bps 42600bytes 0 bps 42600bytes Best Effort
