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Netgear cm 1200 Intermittent connection
I am having problems with my internet connection getting dropped a lot somehow. I'm not very educated on how all of this works and know only the very basics. On all of my connected devices, after I restart my router and modem, work fine for a bit, then when trying to open any thing that needs to connect to the internet, it will say " No Internet, Check the network cables, modem, router, Reconncet to WiFi, DNS_PROBE_FINISHED_NO_INTERNET. It will stay there for a minute and keep working, then eventually open the page. This is happening on all my devices and computers. I have xfinity, and they are saying it's the modem or router. Netgear is saying it's the ISP. I don't know what's wrong, just that it's not working properly. When I installed the new modem and router 6 months ago, everything worked perfectly for about 6 month. For the last two months I've been dealing with this problem. I included the event logs from the modem. Anything you can help with would be appreciated. Thanks
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Well Netgear sent out a new modem and everything has been working perfectly for about a week, so far. The event log has been completely clear with no errors.
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Please post a copy and paste of the modems connection status page.
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.
https://community.netgear.com/t5/Cable-Modems-Routers/General-info-and-Troubleshooting-for-Cable-Modems/m-p/1530376#M12853
https://highspeed.tips/docsis-events/What is the brand and model of the host wifi router connected to the modem?
Here is the connection Status. I have checked all of the connections, cables, and no splitters. All of that was checked previously too when I installed this Netgear cm1200 modem and Netgear X6S R8000p AC4000 router. I went through all of the ISP provisions this morning and reset the router and Modem. It worked well for a few minutes, then back to the same crap. I have xfinity coming out tomorrow morning to see if anything is wrong with the signal getting to me. I really don't think that's it. It worked perfectly for 6 months and nothing has changed. I was just reading some reviews of the cm1200 and it appears I'm not the only one having these problems. I need this to work correctly because I work from home. If I need a new router, I don't want to wait for netgear to decide to send me another in a month. Should I just go back to the xfinity modem and connect it to my router, or is there another brand modem I should buy. I'm not terribly concerned about the cost, I just need it to work.
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 Startup Procedure Procedure Status Comment Acquire Downstream Channel 663000000 Hz Locked Connectivity State OK Operational Boot State OK Operational Security Enabled BPI+ IP Provisioning Mode Honor MDD honorMdd(4) Downstream Bonded Channels Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables 1 Locked QAM256 40 663000000 Hz -4.3 dBmV 38.4 dB 0 0 2 Locked QAM256 17 525000000 Hz -5.9 dBmV 38.5 dB 0 0 3 Locked QAM256 18 531000000 Hz -5.1 dBmV 38.7 dB 0 0 4 Locked QAM256 19 537000000 Hz -5.2 dBmV 38.7 dB 0 0 5 Locked QAM256 20 543000000 Hz -4.8 dBmV 38.8 dB 0 0 6 Locked QAM256 21 549000000 Hz -5.1 dBmV 38.8 dB 0 0 7 Locked QAM256 22 555000000 Hz -4.9 dBmV 38.8 dB 0 0 8 Locked QAM256 23 561000000 Hz -5.1 dBmV 38.3 dB 0 0 9 Locked QAM256 24 567000000 Hz -4.8 dBmV 38.6 dB 0 0 10 Locked QAM256 25 573000000 Hz -4.6 dBmV 38.8 dB 0 0 11 Locked QAM256 26 579000000 Hz -4.2 dBmV 38.8 dB 0 0 12 Locked QAM256 27 585000000 Hz -4.1 dBmV 38.8 dB 0 0 13 Locked QAM256 28 591000000 Hz -3.8 dBmV 38.9 dB 0 0 14 Locked QAM256 29 597000000 Hz -3.7 dBmV 38.8 dB 0 0 15 Locked QAM256 30 603000000 Hz -3.5 dBmV 38.8 dB 0 0 16 Locked QAM256 31 609000000 Hz -3.6 dBmV 38.9 dB 0 0 17 Locked QAM256 32 615000000 Hz -3.7 dBmV 38.9 dB 0 0 18 Locked QAM256 33 621000000 Hz -3.6 dBmV 38.9 dB 0 0 19 Locked QAM256 34 627000000 Hz -4 dBmV 38.8 dB 0 0 20 Locked QAM256 35 633000000 Hz -3.9 dBmV 38.7 dB 0 0 21 Locked QAM256 36 639000000 Hz -4.4 dBmV 38.5 dB 0 0 22 Locked QAM256 37 645000000 Hz -4 dBmV 38.5 dB 0 0 23 Locked QAM256 38 651000000 Hz -4.5 dBmV 38.4 dB 0 0 24 Locked QAM256 39 657000000 Hz -4.1 dBmV 38.5 dB 0 0 25 Locked QAM256 41 669000000 Hz -3.7 dBmV 38.5 dB 0 0 26 Locked QAM256 42 675000000 Hz -3.7 dBmV 38.2 dB 0 0 27 Locked QAM256 43 681000000 Hz -3.1 dBmV 38.4 dB 0 0 28 Locked QAM256 44 687000000 Hz -3 dBmV 38.5 dB 0 0 29 Locked QAM256 45 693000000 Hz -2.8 dBmV 38.4 dB 0 0 30 Locked QAM256 46 699000000 Hz -3.3 dBmV 38.2 dB 0 0 31 Locked QAM256 47 705000000 Hz -3.4 dBmV 38.2 dB 0 0 32 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 Upstream Bonded Channels Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power 1 Locked ATDMA 1 5120 Ksym/sec 16400000 Hz 50.3 dBmV 2 Locked ATDMA 2 5120 Ksym/sec 22800000 Hz 50.3 dBmV 3 Locked ATDMA 3 5120 Ksym/sec 29200000 Hz 50.3 dBmV 4 Locked ATDMA 4 5120 Ksym/sec 35600000 Hz 48.8 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 Downstream OFDM Channels Channel Lock
StatusModulation /
Profile IDChannel
IDFrequency Power SNR /
MERActive Subcarrier
Number RangeUnerrored
CodewordsCorrectable
CodewordsUncorrectable
Codewords1 Locked 0 ,1 ,2 ,3 48 805000000 Hz -6.2 dBmV 36.4 dB 1168 ~ 2927 192237126 188532778 0 2 Not Locked 0 0 0 Hz 0 dBmV 0.0 dB 0 ~ 4095 0 0 0 Upstream OFDMA Channels Channel Lock Status Modulation / Profile ID Channel ID Frequency Power 1 Not Locked 0 0 0 Hz 0 dBmV 2 Not Locked 0 0 0 Hz 0 dBmV Extended Upstream Transmit Power Enable Extended Upstream Transmit Power Current System Time:Wed Jul 14 15:53:39 2021 System Up Time:05:25:51 Xfinity just tested all of the lines and signals, and everything is working on their end. It looks like the modem may be the issue. Now I need to figure out if it needs to be replaced, repaired.
Well Netgear sent out a new modem and everything has been working perfectly for about a week, so far. The event log has been completely clear with no errors.
Good to hear. Enjoy, :smileywink:
