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user_2k0ds3
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Wednesday, August 21st, 2024 7:31 PM

My service slowed down and now I'm seeing Started Unicast Maintenance Ranging - No Response received - T3 time-out messages

At the start of this week my home internet service got noticeably slower.  I checked the logs and see this message showing as CRITICAL:

Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

I rebooted the router and disconnected all of the devices that were connect to it, except for one laptop but I still see this message.  I'm using a Netgear CAX80 router in place of an Xfinity-supplied unit.

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4 months ago

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EG

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4 months ago

Please copy all of the text in its entirety of the *Downstream Power Levels*, the *SNR's* (Signal to Noise Ratios), and the *Upstream Power Level* numbers and paste them into your next post.

Is this with a WiFi connection ?

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user_2k0ds3

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Cable Diagnostic

Status: Good

Action: Your setup looks fine. If you are still experience an internet issue, the Netgear Cable Knowledge Base can provide additional troubleshooting info.

Internet Access: Good

Downstream Status: Good

    Downstream Power Level: Good

    Downstream SNR: Good

Upstream Status:  Good

    Upstream Power Level: Good


Current time: Wed Aug 21 18:39:36 2024

Startup Procedure
Acquire Downstream Channel: 687 MHz   Locked
Connectivity State:          OK       Operational
Boot State:                  OK       Operational
Security:                   Enabled   BPI+


Downstream Bonded Channels
Channel LockedStatus Modulation ChannelID  Frequency        Power       SNR   Correctables Uncorrectables     
      1     Locked     256 QAM     44     687000000 Hz     3.9 dBmV     43.2 dB     216     516
      2     Locked     256 QAM     13     501000000 Hz     4.7 dBmV     42.7 dB     391     902
      3     Locked     256 QAM     14     507000000 Hz     4.7 dBmV     43.9 dB     395     892
      4     Locked     256 QAM     15     513000000 Hz     4.6 dBmV     43.7 dB     403     906
      5     Locked     256 QAM     16     519000000 Hz     4.9 dBmV     43.3 dB     352     887
      6     Locked     256 QAM     17     525000000 Hz     5 dBmV     44.1 dB     346     899
      7     Locked     256 QAM     18     531000000 Hz     4.5 dBmV     44.3 dB     433     874
      8     Locked     256 QAM     19     537000000 Hz     4.4 dBmV     44.1 dB     389     892
      9     Locked     256 QAM     20     543000000 Hz     4.4 dBmV     41.8 dB     395     899
     10     Locked     256 QAM     21     549000000 Hz     4.6 dBmV     41.6 dB     360     889
     11     Locked     256 QAM     22     555000000 Hz     4.8 dBmV     43.8 dB     327     910
     12     Locked     256 QAM     23     561000000 Hz     5 dBmV     44.4 dB     386     898
     13     Locked     256 QAM     24     567000000 Hz     4.7 dBmV     43.7 dB     414     862
     14     Locked     256 QAM     25     573000000 Hz     4.8 dBmV     40.7 dB     391     887
     15     Locked     256 QAM     26     579000000 Hz     4.9 dBmV     43.1 dB     403     886
     16     Locked     256 QAM     27     585000000 Hz     4.9 dBmV     43.9 dB     351     904
     17     Locked     256 QAM     28     591000000 Hz     5 dBmV     43.6 dB     375     904
     18     Locked     256 QAM     29     597000000 Hz     5.1 dBmV     43.2 dB     359     913
     19     Locked     256 QAM     30     603000000 Hz     5.1 dBmV     43.6 dB     403     866
     20     Locked     256 QAM     31     609000000 Hz     4.6 dBmV     44.1 dB     363     885
     21     Locked     256 QAM     32     615000000 Hz     4.4 dBmV     44 dB     307     897
     22     Locked     256 QAM     33     621000000 Hz     4.2 dBmV     43.2 dB     335     911
     23     Locked     256 QAM     34     627000000 Hz     4.3 dBmV     42.4 dB     968     919
     24     Locked     256 QAM     35     633000000 Hz     4.7 dBmV     41.7 dB     636732     1046
     25     Locked     256 QAM     36     639000000 Hz     4.5 dBmV     41.1 dB     4322     880
     26     Locked     256 QAM     37     645000000 Hz     4.4 dBmV     40.8 dB     812     867
     27     Locked     256 QAM     38     651000000 Hz     4.3 dBmV     43.6 dB     348     910
     28     Locked     256 QAM     39     657000000 Hz     4.1 dBmV     43.7 dB     356     950
     29     Locked     256 QAM     40     663000000 Hz     4.2 dBmV     43.7 dB     322     1059
     30     Locked     256 QAM     41     669000000 Hz     4.4 dBmV     43.7 dB     335     979
     31     Locked     256 QAM     42     675000000 Hz     4.2 dBmV     42.9 dB     370     902
     32     Locked     256 QAM     43     681000000 Hz     3.9 dBmV     43.6 dB     375     1005


Upstream Bonded Channels
Channel   LockedStatus  ChannelType ChannelID   SymbolRate        Frequency       Power     
      1       Locked       ATDMA     20       5120 Ksym/sec       35600000 Hz       38.8 dBmV
      2       Locked       ATDMA     18       5120 Ksym/sec       22800000 Hz       40.0 dBmV
      3       Locked       ATDMA     19       5120 Ksym/sec       29200000 Hz       39.0 dBmV
      4       Locked       ATDMA     17       5120 Ksym/sec       16400000 Hz       40.8 dBmV
      5       Not Locked       Unknown      0       0       0       0.0
      6       Not Locked       Unknown      0       0       0       0.0
      7       Not Locked       Unknown      0       0       0       0.0
      8       Not Locked       Unknown      0       0       0       0.0


Downstream OFDM Channels
Channel   LockedStatus  ProfileID  ChannelID    Frequency       Power       SNR/MER    ActiveSubcarrier    Unerror    Correctable   Uncorrectable
      1     Locked     0 ,1 ,2 ,3     193     722000000 Hz     3.58 dBmV     42.6 dB     868 ~ 3227     1231879543     989799762     6163
      2     Locked     0 ,1 ,2 ,3     194     957000000 Hz     1.98 dBmV     41.5 dB     148 ~ 3947     1232370138     1064664121     55971


Upstream OFDMA Channels
Channel   LockedStatus    ProfileID    ChannelID    Frequency       Power
      1     Not Locked     0      0     0 Hz     0 dBmV
      2     Not Locked     0      0     0 Hz     0 dBmV


Event Log
         Time               Priority     Description
Wed Aug 21 18:17:15 2024     Critical     Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 18:14:03 2024     Notice     CM-STATUS message sent. Event Type Code: 23; Chan ID: 193 194; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 18:12:06 2024     Notice     CM-STATUS message sent. Event Type Code: 24; Chan ID: 193 194; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0 1 2 3.;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 18:12:06 2024     Notice     CM-STATUS message sent. Event Type Code: 22; Chan ID: 193 194; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 18:07:23 2024     Notice     CM-STATUS message sent. Event Type Code: 23; Chan ID: 193 194; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 18:05:26 2024     Notice     CM-STATUS message sent. Event Type Code: 24; Chan ID: 193 194; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0 1 2 3.;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 18:05:26 2024     Notice     CM-STATUS message sent. Event Type Code: 22; Chan ID: 193 194; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 18:00:43 2024     Notice     CM-STATUS message sent. Event Type Code: 23; Chan ID: 193 194; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 17:58:46 2024     Notice     CM-STATUS message sent. Event Type Code: 24; Chan ID: 193 194; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0 1 2 3.;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 17:58:46 2024     Notice     CM-STATUS message sent. Event Type Code: 22; Chan ID: 193 194; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 17:56:53 2024     Critical     Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 17:55:17 2024     Critical     UCD invalid or channel unusable;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 17:55:11 2024     Critical     SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 17:55:10 2024     Warning     MDD message timeout;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 17:55:07 2024     Critical     SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 17:34:48 2024     Critical     Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 17:34:40 2024     Notice     CM-STATUS message sent. Event Type Code: 24; Chan ID: 193 194; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1 2 3.;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 17:29:17 2024     Critical     Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 17:28:00 2024     Notice     CM-STATUS message sent. Event Type Code: 24; Chan ID: 193 194; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1 2 3.;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 17:22:41 2024     Critical     Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 17:21:20 2024     Notice     CM-STATUS message sent. Event Type Code: 24; Chan ID: 193 194; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1 2 3.;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 17:19:00 2024     Critical     Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 17:17:37 2024     Notice     CM-STATUS message sent. Event Type Code: 16; Chan ID: 194; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 17:15:52 2024     Critical     Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 17:14:40 2024     Notice     CM-STATUS message sent. Event Type Code: 24; Chan ID: 193 194; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1 2 3.;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 17:13:27 2024     Critical     Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 17:12:48 2024     Notice     CM-STATUS message sent. Event Type Code: 16; Chan ID: 194; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 17:11:01 2024     Critical     Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 17:08:59 2024     Notice     CM-STATUS message sent. Event Type Code: 16; Chan ID: 193; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 16:36:14 2024     Critical     Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 16:35:23 2024     Notice     CM-STATUS message sent. Event Type Code: 24; Chan ID: 193 194; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1 2 3.;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 16:30:39 2024     Critical     Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 16:28:43 2024     Notice     CM-STATUS message sent. Event Type Code: 24; Chan ID: 193 194; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1 2 3.;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 16:22:52 2024     Critical     Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 16:22:03 2024     Notice     CM-STATUS message sent. Event Type Code: 24; Chan ID: 193 194; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1 2 3.;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 16:18:56 2024     Critical     Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 16:18:33 2024     Notice     CM-STATUS message sent. Event Type Code: 16; Chan ID: 194; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 15:28:43 2024     Critical     Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 15:28:13 2024     Notice     CM-STATUS message sent. Event Type Code: 24; Chan ID: 193 194; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1 2 3.;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;
Wed Aug 21 15:23:16 2024     Critical     Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:01:02:03:04:05;CM-QOS=1.1;CM-VER=3.1;

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