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Java0515's avatar
Java0515
New Contributor III
7 years ago

Frequent Internet Dropping

For about 2 months now I have been having connection issues with our internet (wired connection and wi-fi), and in the last couple weeks it would just drop at least 3-5 days in a week, at least 1-2 t...
Java0515's avatar
Java0515
New Contributor III

Im going to try this out! Will update once done.

Java0515's avatar
Java0515
New Contributor III
7 years ago

This is what the modem logs says:

Cable Connection
 
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Frequency start Value
This field below allows you to modify the frequency the cable modem start with its scan during initialization and registration. Enter the new start frequency and restart the cable modem for it to take effect.
Starting Frequency
 
Startup Procedure
Procedure Status Comment
Acquire Downstream Channel 795000000 Hz Locked
Connectivity State OK Operational
Boot State OK Operational
Security Enable BPI+
IP Provisioning Mode Honor MDD IPv4 only
 
<tabindex=-1>Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables
1 Locked QAM256 3 795000000 Hz 2.2 dBmV 32.2 dB 0 0
2 Locked QAM256 1 783000000 Hz 3.3 dBmV 33.0 dB 2254 49
3 Locked QAM256 2 789000000 Hz 2.9 dBmV 32.7 dB 0 0
4 Locked QAM256 22 909000000 Hz 1.1 dBmV 31.7 dB 96 0
5 Locked QAM256 4 801000000 Hz 2.0 dBmV 32.0 dB 0 0
6 Locked QAM256 5 807000000 Hz 2.0 dBmV 32.1 dB 0 0
7 Locked QAM256 6 813000000 Hz 2.2 dBmV 32.3 dB 0 0
8 Locked QAM256 7 819000000 Hz 2.2 dBmV 32.3 dB 0 0
9 Locked QAM256 8 825000000 Hz 2.0 dBmV 32.3 dB 516 382
10 Locked QAM256 17 879000000 Hz 0.5 dBmV 32.0 dB 0 0
11 Locked QAM256 18 885000000 Hz 0.6 dBmV 32.0 dB 0 0
12 Locked QAM256 19 891000000 Hz 0.4 dBmV 31.8 dB 9 0
13 Locked QAM256 20 897000000 Hz 0.3 dBmV 31.7 dB 31 0
14 Locked QAM256 21 903000000 Hz 1.0 dBmV 32.1 dB 17 0
15 Locked QAM256 23 915000000 Hz 1.3 dBmV 31.7 dB 36 0
16 Locked QAM256 24 921000000 Hz 1.0 dBmV 31.2 dB 256 0
17 Locked QAM256 33 345000000 Hz 11.0 dBmV 39.0 dB 0 0
18 Locked QAM256 34 351000000 Hz 10.8 dBmV 39.0 dB 0 0
19 Locked QAM256 35 357000000 Hz 10.8 dBmV 38.9 dB 0 0
20 Locked QAM256 36 363000000 Hz 10.5 dBmV 38.9 dB 0 0
21 Locked QAM256 37 369000000 Hz 10.4 dBmV 38.6 dB 0 0
22 Locked QAM256 38 375000000 Hz 10.4 dBmV 38.6 dB 0 0
23 Locked QAM256 39 381000000 Hz 10.3 dBmV 38.6 dB 0 0
24 Locked QAM256 40 387000000 Hz 10.1 dBmV 38.2 dB 0 0
 
<tabindex=-1>Upstream Bonded Channels
Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1 Locked ATDMA 1 2560 Ksym/sec 20492000 Hz 42.8 dBmV
2 Locked ATDMA 2 5120 Ksym/sec 25392000 Hz 44.3 dBmV
3 Locked ATDMA 3 5120 Ksym/sec 31892000 Hz 45.8 dBmV
4 Locked ATDMA 4 5120 Ksym/sec 38392000 Hz 47.3 dBmV
5 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
6 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
7 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
8 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
 
Current System Time: Mon Aug 06 16:57:40 2018 
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And Here's the Event Log:
Event Log
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Time Priority Description
2018-08-06, 07:56:11 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=2c:30:33:94:d3:98;CMTS-MAC=f8:b7:e2:05:a8:f0;CM-QOS=1.1;CM-VER=3.0;
2018-08-06, 07:55:23 Notice (6) TLV-11 - unrecognized OID;CM-MAC=2c:30:33:94:d3:98;CMTS-MAC=f8:b7:e2:05:a8:f0;CM-QOS=1.1;CM-VER=3.0;
2018-08-04, 08:04:47 Critical (3) Resetting the cable modem due to docsDevResetNow
2018-08-02, 14:52:58 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=2c:30:33:94:d3:98;CMTS-MAC=f8:b7:e2:05:a8:f0;CM-QOS=1.1;CM-VER=3.0;
2018-07-22, 09:24:20 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=2c:30:33:94:d3:98;CMTS-MAC=f8:b7:e2:05:a8:f0;CM-QOS=1.1;CM-VER=3.0;
2018-07-17, 22:30:41 Critical (3) Resetting the cable modem due to docsDevResetNow
2018-07-17, 21:07:42 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=2c:30:33:94:d3:98;CMTS-MAC=f8:b7:e2:05:a8:f0;CM-QOS=1.1;CM-VER=3.0;
2018-07-17, 21:05:51 Critical (3) Resetting the cable modem due to docsDevResetNow
2018-07-16, 05:13:13 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=2c:30:33:94:d3:98;CMTS-MAC=f8:b7:e2:05:a8:f0;CM-QOS=1.1;CM-VER=3.0;
2018-07-16, 05:11:28 Critical (3) Resetting the cable modem due to docsDevResetNow
2018-07-11, 18:08:27 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=2c:30:33:94:d3:98;CMTS-MAC=f8:b7:e2:05:a8:f0;CM-QOS=1.1;CM-VER=3.0;
2018-07-02, 07:45:54 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=2c:30:33:94:d3:98;CMTS-MAC=f8:b7:e2:05:a8:f0;CM-QOS=1.1;CM-VER=3.0;
2018-06-30, 18:01:27 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=2c:30:33:94:d3:98;CMTS-MAC=f8:b7:e2:05:a8:f0;CM-QOS=1.1;CM-VER=3.0;
2018-03-28, 02:21:58 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=2c:30:33:94:d3:98;CMTS-MAC=f8:b7:e2:05:a8:f0;CM-QOS=1.0;CM-VER=3.0;
2018-03-28, 02:21:50 Critical (3) SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=2c:30:33:94:d3:98;CMTS-MAC=f8:b7:e2:05:a8:f0;CM-QOS=1.0;CM-VER=3.0;
2018-03-28, 02:21:49 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=2c:30:33:94:d3:98;CMTS-MAC=f8:b7:e2:05:a8:f0;CM-QOS=1.0;CM-VER=3.0;
2018-03-28, 02:20:50 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=2c:30:33:94:d3:98;CMTS-MAC=f8:b7:e2:05:a8:f0;CM-QOS=1.0;CM-VER=3.0;
2018-03-28, 02:19:52 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=2c:30:33:94:d3:98;CMTS-MAC=f8:b7:e2:05:a8:f0;CM-QOS=1.0;CM-VER=3.0;
2018-03-28, 02:18:54 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=2c:30:33:94:d3:98;CMTS-MAC=f8:b7:e2:05:a8:f0;CM-QOS=1.0;CM-VER=3.0;
2018-03-28, 02:17:56 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=2c:30:33:94:d3:98;CMTS-MAC=f8:b7:e2:05:a8:f0;CM-QOS=1.0;CM-VER=3.0;
2018-03-28, 02:17:23 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=2c:30:33:94:d3:98;CMTS-MAC=f8:b7:e2:05:a8:f0;CM-QOS=1.0;CM-VER=3.0;
2018-03-28, 02:16:04 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=2c:30:33:94:d3:98;CMTS-MAC=f8:b7:e2:05:a8:f0;CM-QOS=1.0;CM-VER=3.0;
2018-03-28, 02:15:06 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=2c:30:33:94:d3:98;CMTS-MAC=f8:b7:e2:05:a8:f0;CM-QOS=1.0;CM-VER=3.0;
2018-03-28, 02:14:08 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=2c:30:33:94:d3:98;CMTS-MAC=f8:b7:e2:05:a8:f0;CM-QOS=1.0;CM-VER=3.0;
2018-03-28, 02:13:10 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=2c:30:33:94:d3:98;CMTS-MAC=f8:b7:e2:05:a8:f0;CM-QOS=1.0;CM-VER=3.0;
2018-03-28, 02:12:54 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=2c:30:33:94:d3:98;CMTS-MAC=f8:b7:e2:05:a8:f0;CM-QOS=1.0;CM-VER=3.0;
2018-03-28, 02:12:54 Critical (3) SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=2c:30:33:94:d3:98;CMTS-MAC=f8:b7:e2:05:a8:f0;CM-QOS=1.0;CM-VER=3.0;
2018-03-28, 02:12:51 Critical (3) SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=2c:30:33:94:d3:98;CMTS-MAC=f8:b7:e2:05:a8:f0;CM-QOS=1.0;CM-VER=3.0;
2018-03-28, 02:12:50 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=2c:30:33:94:d3:98;CMTS-MAC=f8:b7:e2:05:a8:f0;CM-QOS=1.0;CM-VER=3.0;
2018-03-28, 02:10:50 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=2c:30:33:94:d3:98;CMTS-MAC=f8:b7:e2:05:a8:f0;CM-QOS=1.0;CM-VER=3.0;
2018-03-28, 02:10:46 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=2c:30:33:94:d3:98;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2018-03-28, 02:10:44 Critical (3) Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=2c:30:33:94:d3:98;CMTS-MAC=f8:b7:e2:05:a8:f0;CM-QOS=1.0;CM-VER=3.0;
2018-03-28, 02:10:38 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=2c:30:33:94:d3:98;CMTS-MAC=f8:b7:e2:05:a8:f0;CM-QOS=1.0;CM-VER=3.0;
2018-03-28, 02:09:40 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=2c:30:33:94:d3:98;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=2c:30:33:94:d3:98;CMTS-MAC=f8:b7:e2:05:a8:f0;CM-QOS=1.0;CM-VER=3.0;
Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=2c:30:33:94:d3:98;CMTS-MAC=f8:b7:e2:05:a8:f0;CM-QOS=1.0;CM-VER=3.0;
Time Not Established Warning (5) DHCP WARNING - Non-critical field invalid in response ;CM-MAC=2c:30:33:94:d3:98;CMTS-MAC=f8:b7:e2:05:a8:f0;CM-QOS=1.0;CM-VER=3.0;
Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=2c:30:33:94:d3:98;CMTS-MAC=f8:b7:e2:05:a8:f0;CM-QOS=1.0;CM-VER=3.0;
Time Not Established Notice (6) Honoring MDD; IP provisioning mode = IPv4
Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=2c:30:33:94:d3:98;CMTS-MAC=f8:b7:e2:05:a8:f0;CM-QOS=1.0;CM-VER=3.0;
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  • Java0515's avatar
    Java0515
    New Contributor III
    7 years ago

    This is the the modem status after disconnecting it from 2 splitters and connected it directly to the main coaxial cable.

    Cable Connection
     
    Apply               Cancel     
    Frequency start Value
    This field below allows you to modify the frequency the cable modem start with its scan during initialization and registration. Enter the new start frequency and restart the cable modem for it to take effect.
    Starting Frequency
     
    Startup Procedure
    Procedure Status Comment
    Acquire Downstream Channel 795000000 Hz Locked
    Connectivity State OK Operational
    Boot State OK Operational
    Security Enable BPI+
    IP Provisioning Mode Honor MDD IPv4 only
     
    <tabindex=-1>Downstream Bonded Channels
    Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables
    1 Locked QAM256 3 795000000 Hz -5.4 dBmV 34.6 dB 0 0
    2 Locked QAM256 1 783000000 Hz -4.6 dBmV 35.0 dB 0 0
    3 Locked QAM256 2 789000000 Hz -5.0 dBmV 34.8 dB 0 0
    4 Locked QAM256 22 909000000 Hz -5.8 dBmV 34.7 dB 0 0
    5 Locked QAM256 4 801000000 Hz -5.4 dBmV 34.5 dB 0 0
    6 Locked QAM256 5 807000000 Hz -5.5 dBmV 34.7 dB 0 0
    7 Locked QAM256 6 813000000 Hz -5.5 dBmV 34.8 dB 0 0
    8 Locked QAM256 7 819000000 Hz -5.5 dBmV 34.9 dB 0 0
    9 Locked QAM256 8 825000000 Hz -5.5 dBmV 35.0 dB 0 0
    10 Locked QAM256 17 879000000 Hz -6.8 dBmV 34.2 dB 0 0
    11 Locked QAM256 18 885000000 Hz -6.6 dBmV 34.6 dB 0 0
    12 Locked QAM256 19 891000000 Hz -6.6 dBmV 34.5 dB 0 0
    13 Locked QAM256 20 897000000 Hz -6.5 dBmV 34.5 dB 0 0
    14 Locked QAM256 21 903000000 Hz -5.9 dBmV 34.8 dB 0 0
    15 Locked QAM256 23 915000000 Hz -5.4 dBmV 34.8 dB 0 0
    16 Locked QAM256 24 921000000 Hz -5.4 dBmV 34.5 dB 0 0
    17 Locked QAM256 33 345000000 Hz 1.6 dBmV 39.4 dB 0 0
    18 Locked QAM256 34 351000000 Hz 1.5 dBmV 39.5 dB 0 0
    19 Locked QAM256 35 357000000 Hz 1.5 dBmV 39.4 dB 0 0
    20 Locked QAM256 36 363000000 Hz 1.4 dBmV 39.4 dB 0 0
    21 Locked QAM256 37 369000000 Hz 1.3 dBmV 39.4 dB 0 0
    22 Locked QAM256 38 375000000 Hz 1.2 dBmV 39.4 dB 0 0
    23 Locked QAM256 39 381000000 Hz 1.3 dBmV 39.4 dB 0 0
    24 Locked QAM256 40 387000000 Hz 1.2 dBmV 39.4 dB 0 0
     
    <tabindex=-1>Upstream Bonded Channels
    Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
    1 Locked ATDMA 1 2560 Ksym/sec 20492000 Hz 37.3 dBmV
    2 Locked ATDMA 2 5120 Ksym/sec 25392000 Hz 38.8 dBmV
    3 Locked ATDMA 3 5120 Ksym/sec 31892000 Hz 40.3 dBmV
    4 Locked ATDMA 4 5120 Ksym/sec 38392000 Hz 41.8 dBmV
    5 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
    6 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
    7 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
    8 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
     
    Current System Time: Mon Aug 06 17:34:46 2018 
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    • Rob_H_'s avatar
      Rob_H_
      Contributor II
      7 years ago

      At first glance, I see improvements in the SNR for some downstream channels and lower pwr levels for other downstream channels which puts them all in a better operating range for a DOCSIS 3.0 modem.  All the best.