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LC342's avatar
LC342
Aspirant
Apr 25, 2023

CAX30 - Getting t3 and t4 Timeouts constantly .

I have an xfinity 800 mbps plan.  Keep getting T3 T4 timeouts Looks like looking for channel 2 - 3 -4 The only upstream channels that are locked are 1 and 5 . Have Firmware v1.4.12.2     Do i need more upstream  channels?   Getting 756.79 download and 23.78 upload - wired     149.00 down and 23.8 up wifi.   just keep getting dropouts and/or delays on wifi I beleive due to all the t3-t4 timeouts.  ??????suggestions.   

Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1 Locked ATDMA 1 2560 Ksym/sec 35600000 Hz 42.5 dBmV
2 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0 dBmV
3 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0 dBmV
4 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0 dBmV
5 Locked ATDMA 5 2560 Ksym/sec 40400000 Hz 39.5 dBmV
6 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0 dBmV
7 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0 dBmV
8 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0 dBmV

 

2023-04-25 07:39:46 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
2023-04-25 07:39:45 Critical (3) 16 consecutive T3 timeouts while trying to range on upstream channel 3;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
2023-04-25 07:39:45 Critical (3) Ranging Request Retries exhausted;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
2023-04-25 07:37:17 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
2023-04-25 07:37:15 Critical (3) 16 consecutive T3 timeouts while trying to range on upstream channel 4;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
2023-04-25 07:37:15 Critical (3) Ranging Request Retries exhausted;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
2023-04-25 07:37:09 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
2023-04-25 07:37:07 Critical (3) 16 consecutive T3 timeouts while trying to range on upstream channel 2;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
2023-04-25 07:37:07 Critical (3) Ranging Request Retries exhausted;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;

5 Replies

  • FURRYe38's avatar
    FURRYe38
    Guru - Experienced User
    Apr 25, 2023

    What Firmware version is currently loaded?
    Please post a copy and paste of the modems FULLL connection status and event log page.
    https://kb.netgear.com/30007/How-do-I-obtain-the-cable-connection-information-from-a-NETGEAR-cable-modem-modem-router
    https://kb.netgear.com/30008/How-do-I-view-or-clear-the-event-logs-on-my-NETGEAR-cable-modem-or-modem-router

     

     

    • LC342's avatar
      LC342
      Aspirant
      Apr 25, 2023

      Version 1.4.12.2

       

       

      Cable Connection
      Cancel Apply
      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
       
      <tabindex=-1>Startup Procedure</tabindex=-1>
      ProcedureStatusComment
      Acquire Downstream Channel549000000 HzLocked
      Connectivity StateOKRegistration Complete
      Boot StateOKOperational
      SecurityEnabledBPI+
      IP Provisioning ModeHonor MDDIPv6 only
       
      <tabindex=-1>Downstream Bonded Channels</tabindex=-1>
       
      ChannelLock StatusModulationChannel IDFrequencyPowerSNRCorrectablesUncorrectabables
      1Locked256 QAM9549000000 Hz1.4 dBmV40.0 dB00
      2Locked256 QAM1495000000 Hz1.7 dBmV40.0 dB00
      3Locked256 QAM2507000000 Hz1.6 dBmV39.9 dB00
      4Locked256 QAM3513000000 Hz1.6 dBmV40.0 dB00
      5Locked256 QAM4519000000 Hz1.6 dBmV40.0 dB00
      6Locked256 QAM5525000000 Hz1.6 dBmV40.0 dB00
      7Locked256 QAM6531000000 Hz1.6 dBmV40.1 dB00
      8Locked256 QAM7537000000 Hz1.5 dBmV40.0 dB00
      9Locked256 QAM8543000000 Hz1.5 dBmV40.0 dB00
      10Locked256 QAM10555000000 Hz1.3 dBmV40.0 dB00
      11Locked256 QAM11561000000 Hz1.3 dBmV40.0 dB00
      12Locked256 QAM12567000000 Hz1.1 dBmV39.9 dB00
      13Locked256 QAM13573000000 Hz1.0 dBmV39.9 dB00
      14Locked256 QAM14579000000 Hz1.0 dBmV39.9 dB00
      15Locked256 QAM15585000000 Hz0.8 dBmV39.8 dB00
      16Locked256 QAM16591000000 Hz0.8 dBmV39.8 dB00
      17Locked256 QAM17597000000 Hz0.7 dBmV39.7 dB00
      18Locked256 QAM18603000000 Hz0.6 dBmV39.6 dB00
      19Locked256 QAM19609000000 Hz0.4 dBmV39.6 dB00
      20Locked256 QAM20615000000 Hz0.2 dBmV39.5 dB00
      21Locked256 QAM21621000000 Hz0.3 dBmV39.5 dB00
      22Locked256 QAM22627000000 Hz0.0 dBmV39.3 dB00
      23Locked256 QAM23633000000 Hz0.0 dBmV39.4 dB00
      24Locked256 QAM38447000000 Hz2.0 dBmV40.2 dB00
      25Locked256 QAM39453000000 Hz1.9 dBmV40.2 dB00
      26Locked256 QAM40459000000 Hz1.8 dBmV40.0 dB00
      27Locked256 QAM41465000000 Hz1.8 dBmV40.1 dB00
      28Locked256 QAM42471000000 Hz1.7 dBmV40.0 dB00
      29Locked256 QAM43477000000 Hz1.8 dBmV40.0 dB00
      30Locked256 QAM44483000000 Hz1.8 dBmV40.1 dB00
      31Locked256 QAM45489000000 Hz1.7 dBmV40.0 dB00
      32Not LockedUnknown00 Hz0.0 dBmV0.0 dB00
       
      <tabindex=-1>Upstream Bonded Channels</tabindex=-1>
       
      ChannelLock StatusUS Channel TypeChannel IDSymbol RateFrequencyPower
      1LockedATDMA12560 Ksym/sec35600000 Hz42.8 dBmV
      2Not LockedUnknown00 Ksym/sec0 Hz0 dBmV
      3Not LockedUnknown00 Ksym/sec0 Hz0 dBmV
      4Not LockedUnknown00 Ksym/sec0 Hz0 dBmV
      5LockedATDMA52560 Ksym/sec40400000 Hz39.5 dBmV
      6Not LockedUnknown00 Ksym/sec0 Hz0 dBmV
      7Not LockedUnknown00 Ksym/sec0 Hz0 dBmV
      8Not LockedUnknown00 Ksym/sec0 Hz0 dBmV
       
      <tabindex=-1>Downstream OFDM Channels</tabindex=-1>
       
      ChannelChannel IDIndicatorSubcarrier Zero FrequencyActive Subcarrier Number RangeTotal CodewordsUncorrectable Codewords
      137Non-Primary659.6 MHz1108 ~ 29871400376910
      20Other0 MHz0 ~ 000
       
      <tabindex=-1>Upstream OFDMA Channels</tabindex=-1>
       
      ChannelUpstreamIsMutedRanging StatusSubcarrier Zero FrequencyActive Subcarrier Number RangeSymbols Per FrameTx Power
      1 Other0 MHz0 ~ 000 dBmV
      2 Other0 MHz0 ~ 000 dBmV
       
      Extended Upstream Transmit PowerEnable Extended Upstream Transmit Power
       
      Current System Time: 2023-04-25 09:11:25
      System Up Time: 11:14:42
       
       
    • LC342's avatar
      LC342
      Aspirant
      Apr 25, 2023
       
       
       
       
      Sorry forgot event log 
       
       
      Event Log
      Clear Log Refresh
       
       
       
      TimePriorityDescription
      2023-04-25 08:16:46Critical (3)No Ranging Response received - T3 time-out;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 08:16:45Critical (3)16 consecutive T3 timeouts while trying to range on upstream channel 3;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 08:16:45Critical (3)Ranging Request Retries exhausted;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 08:16:27Critical (3)No Ranging Response received - T3 time-out;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 08:16:26Critical (3)16 consecutive T3 timeouts while trying to range on upstream channel 2;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 08:16:26Critical (3)Ranging Request Retries exhausted;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 08:15:48Critical (3)No Ranging Response received - T3 time-out;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 08:15:46Critical (3)16 consecutive T3 timeouts while trying to range on upstream channel 4;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 08:15:46Critical (3)Ranging Request Retries exhausted;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 08:11:33Critical (3)No Ranging Response received - T3 time-out;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 08:11:32Critical (3)16 consecutive T3 timeouts while trying to range on upstream channel 2;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 08:11:31Critical (3)Ranging Request Retries exhausted;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 08:10:17Critical (3)No Ranging Response received - T3 time-out;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 08:10:16Critical (3)16 consecutive T3 timeouts while trying to range on upstream channel 3;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 08:10:16Critical (3)Ranging Request Retries exhausted;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 08:09:03Critical (3)No Ranging Response received - T3 time-out;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 08:09:01Critical (3)16 consecutive T3 timeouts while trying to range on upstream channel 4;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 08:09:01Critical (3)Ranging Request Retries exhausted;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 08:06:01Critical (3)No Ranging Response received - T3 time-out;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 08:05:59Critical (3)16 consecutive T3 timeouts while trying to range on upstream channel 2;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 08:05:59Critical (3)Ranging Request Retries exhausted;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 08:04:13Critical (3)No Ranging Response received - T3 time-out;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 08:04:12Critical (3)16 consecutive T3 timeouts while trying to range on upstream channel 4;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 08:04:12Critical (3)Ranging Request Retries exhausted;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 08:03:38Critical (3)No Ranging Response received - T3 time-out;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 08:03:36Critical (3)16 consecutive T3 timeouts while trying to range on upstream channel 3;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 08:03:36Critical (3)Ranging Request Retries exhausted;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 08:01:13Critical (3)No Ranging Response received - T3 time-out;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 08:01:11Critical (3)16 consecutive T3 timeouts while trying to range on upstream channel 4;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 08:01:11Critical (3)Ranging Request Retries exhausted;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 07:59:19Critical (3)No Ranging Response received - T3 time-out;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 07:59:18Critical (3)16 consecutive T3 timeouts while trying to range on upstream channel 2;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 07:59:18Critical (3)Ranging Request Retries exhausted;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 07:56:34Critical (3)No Ranging Response received - T3 time-out;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 07:56:33Critical (3)16 consecutive T3 timeouts while trying to range on upstream channel 4;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 07:56:33Critical (3)Ranging Request Retries exhausted;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 07:56:21Critical (3)No Ranging Response received - T3 time-out;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 07:56:20Critical (3)16 consecutive T3 timeouts while trying to range on upstream channel 3;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 07:56:20Critical (3)Ranging Request Retries exhausted;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      2023-04-25 07:53:05Critical (3)No Ranging Response received - T3 time-out;CM-MAC=6c:cd:d6:8a:69:54;CMTS-MAC=00:01:5c:68:a2:92;CM-QOS=1.1;CM-VER=3.1;
      • FURRYe38's avatar
        FURRYe38
        Guru - Experienced User
        Apr 25, 2023

        Power levels and Correctables and such are good. 

         

        However many Criticals are being logged that the ISP needs to review and resolve. Any Errors or Warnings should also be reviewed by the ISP.