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hubbles_law's avatar
hubbles_law
Aspirant
Dec 15, 2022

CM1200 losing speed right after reboot

Background - about 48 hours ago, I noticed my internet slow down and struggling. Since then whenever I run a speed test I wind up with ~30Mbps Down | ~20Mbps Up and should be around 1Gbps Down, I cal...
FURRYe38's avatar
FURRYe38
Guru - Experienced User
Dec 15, 2022

 


Please post a copy and paste of the modems 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

 

Be sure your using a good quality LAN cable between the modem and router. CAT6 is recommended. 
What is the brand and model of the host wifi router connected to the modem?

 

Have the ISP check the signal and line quality UP to the modem. Be sure the ISP provisions the modem correctly.
Be sure there are no coax cable line splitters in the between the modem and ISP service box. 
Be sure your using good quality RG6 coax cable up to the modem. 
Start with removing any amplifiers, signal attenuators, or splitters from the coax.
From there check the line for kinks, damage, moisture in the line.
Check the connectors for improperly made ends, foil touching the copper coax line, loose connections, bad/old/cheap connectors, or corroded connections. Replace them if you do.
Be sure to power OFF the modem for 1 minute then back ON.
https://community.netgear.com/t5/Cable-Modems-Routers/General-info-and-Troubleshooting-for-Cable-Modems/m-p/1530376#M12853
https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router
https://www.duckware.com/tech/solving-intermittent-cable-modem-issues.html

hubbles_law's avatar
hubbles_law
Aspirant
Dec 15, 2022

Thanks for the reply, here are the details:

 

Enable Extended Upstream Transmit Power is Unchecked

Ethernet Port Aggregation is DISABLED

 

Startup Procedure
Procedure Status Comment
Acquire Downstream Channel603000000 HzLocked
Connectivity StateOKOperational
Boot StateOKOperational
SecurityEnabledBPI+
IP Provisioning ModeHonor MDDhonorMdd(4)
 
Downstream Bonded Channels (Partial Service)
Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables
1LockedQAM25615603000000 Hz1.6 dBmV39.4 dB00
2LockedQAM2561519000000 Hz1.6 dBmV39.7 dB00
3LockedQAM2562525000000 Hz1.6 dBmV39.6 dB00
4LockedQAM2563531000000 Hz1.7 dBmV39.6 dB00
5LockedQAM2564537000000 Hz1.8 dBmV39.7 dB00
6LockedQAM2565543000000 Hz1.6 dBmV39.7 dB00
7LockedQAM2566549000000 Hz1.5 dBmV39.7 dB00
8LockedQAM2567555000000 Hz1.2 dBmV39.6 dB00
9LockedQAM2568561000000 Hz1.5 dBmV38.9 dB00
10LockedQAM2569567000000 Hz1.1 dBmV39.5 dB00
11LockedQAM25610573000000 Hz1.1 dBmV39.1 dB00
12LockedQAM25611579000000 Hz1.4 dBmV39.5 dB00
13LockedQAM25612585000000 Hz1.1 dBmV39.4 dB00
14LockedQAM25613591000000 Hz1.3 dBmV39.4 dB00
15LockedQAM25614597000000 Hz1.6 dBmV39.5 dB00
16LockedQAM25616609000000 Hz1.2 dBmV39.3 dB00
17LockedQAM25617495000000 Hz0.6 dBmV39.6 dB00
18LockedQAM25618501000000 Hz0.6 dBmV39.5 dB00
19LockedQAM25619507000000 Hz1 dBmV39.5 dB00
20LockedQAM25620513000000 Hz1.2 dBmV39.6 dB00
21Not LockedUnknown00 Hz0.0 dBmV0.0 dB00
22Not LockedUnknown00 Hz0.0 dBmV0.0 dB00
23Not LockedUnknown00 Hz0.0 dBmV0.0 dB00
24Not LockedUnknown00 Hz0.0 dBmV0.0 dB00
25Not LockedUnknown00 Hz0.0 dBmV0.0 dB00
26Not LockedUnknown00 Hz0.0 dBmV0.0 dB00
27Not LockedUnknown00 Hz0.0 dBmV0.0 dB00
28Not LockedUnknown00 Hz0.0 dBmV0.0 dB00
29Not LockedUnknown00 Hz0.0 dBmV0.0 dB00
30Not LockedUnknown00 Hz0.0 dBmV0.0 dB00
31Not LockedUnknown00 Hz0.0 dBmV0.0 dB00
32Not LockedUnknown00 Hz0.0 dBmV0.0 dB00
 
Upstream Bonded Channels
Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1LockedATDMA15120 Ksym/sec36800000 Hz50.5 dBmV
2LockedATDMA25120 Ksym/sec30350000 Hz50.8 dBmV
3LockedATDMA35120 Ksym/sec23900000 Hz50.8 dBmV
4Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV
5Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV
6Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV
7Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV
8Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV
 
Downstream OFDM Channels
Channel Lock
Status 		Modulation /
Profile ID 		Channel
ID 		Frequency Power SNR /
MER 		Active Subcarrier
Number Range 		Unerrored
Codewords 		Correctable
Codewords 		Uncorrectable
Codewords
1Not Locked000 Hz0 dBmV0.0 dB0 ~ 4095000
2Not Locked000 Hz0 dBmV0.0 dB0 ~ 4095000
 
Upstream OFDMA Channels
Channel Lock Status Modulation / Profile ID Channel ID Frequency Power
1Not Locked000 Hz0 dBmV
2Not Locked000 Hz0 dBmV

 

 

Time Priority Description
Thu Dec 15 01:13:13 2022Notice (6)CM-STATUS message sent. Event Type Code: 22; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=08:36:c9:a0:db:28;CMTS-MAC=00:ca:e5:c8:c8:ea;CM-QOS=1.1;CM-VER=3.1;
Thu Dec 15 01:12:09 2022Notice (6)CM-STATUS message sent. Event Type Code: 20; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=08:36:c9:a0:db:28;CMTS-MAC=00:ca:e5:c8:c8:ea;CM-QOS=1.1;CM-VER=3.1;
Thu Dec 15 01:12:07 2022Notice (6)CM-STATUS message sent. Event Type Code: 5; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=08:36:c9:a0:db:28;CMTS-MAC=00:ca:e5:c8:c8:ea;CM-QOS=1.1;CM-VER=3.1;
Thu Dec 15 01:11:56 2022Warning (5)REG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=08:36:c9:a0:db:28;CMTS-MAC=00:ca:e5:c8:c8:ea;CM-QOS=1.1;CM-VER=3.1;
Thu Dec 15 01:11:53 2022Notice (6)DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=08:36:c9:a0:db:28;CMTS-MAC=00:ca:e5:c8:c8:ea;CM-QOS=1.1;CM-VER=3.1;
Thu Dec 15 01:11:49 2022Notice (6)TLV-11 - unrecognized OID;CM-MAC=08:36:c9:a0:db:28;CMTS-MAC=00:ca:e5:c8:c8:ea;CM-QOS=1.1;CM-VER=3.1;
Thu Dec 15 01:11:48 2022Error (4)Missing BP Configuration Setting TLV Type: 17.9;CM-MAC=08:36:c9:a0:db:28;CMTS-MAC=00:ca:e5:c8:c8:ea;CM-QOS=1.1;CM-VER=3.1;
Thu Dec 15 01:11:48 2022Error (4)Missing BP Configuration Setting TLV Type: 17.8;CM-MAC=08:36:c9:a0:db:28;CMTS-MAC=00:ca:e5:c8:c8:ea;CM-QOS=1.1;CM-VER=3.1;
Thu Dec 15 01:11:48 2022Error (4)Missing BP Configuration Setting TLV Type: 17.7;CM-MAC=08:36:c9:a0:db:28;CMTS-MAC=00:ca:e5:c8:c8:ea;CM-QOS=1.1;CM-VER=3.1;
Thu Dec 15 01:11:48 2022Error (4)Missing BP Configuration Setting TLV Type: 17.6;CM-MAC=08:36:c9:a0:db:28;CMTS-MAC=00:ca:e5:c8:c8:ea;CM-QOS=1.1;CM-VER=3.1;
Thu Dec 15 01:11:48 2022Error (4)Missing BP Configuration Setting TLV Type: 17.5;CM-MAC=08:36:c9:a0:db:28;CMTS-MAC=00:ca:e5:c8:c8:ea;CM-QOS=1.1;CM-VER=3.1;
Thu Dec 15 01:11:48 2022Error (4)Missing BP Configuration Setting TLV Type: 17.4;CM-MAC=08:36:c9:a0:db:28;CMTS-MAC=00:ca:e5:c8:c8:ea;CM-QOS=1.1;CM-VER=3.1;
Thu Dec 15 01:11:48 2022Error (4)Missing BP Configuration Setting TLV Type: 17.3;CM-MAC=08:36:c9:a0:db:28;CMTS-MAC=00:ca:e5:c8:c8:ea;CM-QOS=1.1;CM-VER=3.1;
Thu Dec 15 01:11:48 2022Error (4)Missing BP Configuration Setting TLV Type: 17.2;CM-MAC=08:36:c9:a0:db:28;CMTS-MAC=00:ca:e5:c8:c8:ea;CM-QOS=1.1;CM-VER=3.1;
Thu Dec 15 01:11:48 2022Error (4)Missing BP Configuration Setting TLV Type: 17.1;CM-MAC=08:36:c9:a0:db:28;CMTS-MAC=00:ca:e5:c8:c8:ea;CM-QOS=1.1;CM-VER=3.1;
Thu Dec 15 01:11:47 2022Warning (5)DHCP WARNING - Non-critical field invalid in response ;CM-MAC=08:36:c9:a0:db:28;CMTS-MAC=00:ca:e5:c8:c8:ea;CM-QOS=1.1;CM-VER=3.1;
Time Not EstablishedNotice (6)Honoring MDD; IP provisioning mode = IPv4
Time Not EstablishedCritical (3)No Ranging Response received - T3 time-out;CM-MAC=08:36:c9:a0:db:28;CMTS-MAC=00:ca:e5:c8:c8:ea;CM-QOS=1.1;CM-VER=3.1;
Time Not EstablishedCritical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=08:36:c9:a0:db:28;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
  • FURRYe38's avatar
    FURRYe38
    Guru - Experienced User
    Dec 15, 2022

    You have lots of errors and criticals that the ISP needs to review and resolve. 

     

    Be sure to have them check the other suggestions as well. 

    • hubbles_law's avatar
      hubbles_law
      Aspirant
      Dec 15, 2022

      I'll reach back to them with the details on the errors.

       

      Are you able to expand or link me to more information about:

      "Be sure the ISP provisions the modem correctly."

      I've been reading that the bootfile which is controlled by my ISP could be an issue if they recently changed my plan but I'm not finding much research on what that entails.

      • FURRYe38's avatar
        FURRYe38
        Guru - Experienced User
        Dec 15, 2022

        That's exactly what some of the config file is...sets speed to what you pay for and also has FW information as well that ISP are responsible for as well. I presume there are other items involved there as well. The ISP will have all this and should have all this information. Seen some ISP not send the config file down to users modems thus causing problems. Then sending down the right one resolves. Just something to have them check into.