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Inconsistent network speed
Hello all, I been having issues with my internet speed connection. I have Xfinity Comcast internet, 80Mbps download and 12Mbps upload. I have Netgear CM600 modem and using that with Netgear Nighthawk wireless router. I been trying different things with restarting the router, upgrading firmware on router etc., i would get correct speeds after router restart, but shortly after maybe 10 min later i get low speeds again. And it varies anywhere from 1Mbps to 80Mbps. I use the testmy.net to test the internet speed and its very random i get anywhere in that range from 1Mbps to 80Mbps. I went out today and purchased a new linksys router for testing purposes so that i can see if the router is the issue, but i am getting the same internet speed drops on new router, which makes me think its the Cable modem thats causing the issue. That said i have also tried restarting the cable modem as well and like with router restarts, the speed are ok for 10 min and they drop again. The cable modem shows all lights in green after restart. I also went in and copied the down and up stream channels perhaps someone can make better sense out of this. I am not sure how to interpret the signals bellow? Any help would be much appreciated. 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 609000000 Startup Procedure Procedure Status Comment Acquire Downstream Channel 609000000 Hz Locked Connectivity State OK Operational Boot State OK Operational Security Enable BPI+ IP Provisioning Mode Honor MDD IPv6 only Downstream Bonded Channels Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables 1 Locked QAM256 16 609000000 Hz -6.6 dBmV 36.5 dB 717 306 2 Locked QAM256 1 519000000 Hz -5.9 dBmV 36.2 dB 857 603 3 Locked QAM256 2 525000000 Hz -5.8 dBmV 37.8 dB 786 585 4 Locked QAM256 3 531000000 Hz -6.0 dBmV 37.9 dB 905 333 5 Locked QAM256 4 537000000 Hz -6.0 dBmV 37.7 dB 801 439 6 Locked QAM256 5 543000000 Hz -6.0 dBmV 37.6 dB 795 456 7 Locked QAM256 6 549000000 Hz -6.2 dBmV 34.8 dB 722 541 8 Locked QAM256 7 555000000 Hz -6.1 dBmV 36.5 dB 686 545 9 Locked QAM256 8 561000000 Hz -5.7 dBmV 34.1 dB 661 483 10 Locked QAM256 9 567000000 Hz -5.9 dBmV 34.8 dB 696 395 11 Locked QAM256 10 573000000 Hz -6.2 dBmV 30.9 dB 288866 89853 12 Locked QAM256 11 579000000 Hz -6.4 dBmV 33.9 dB 138318 1992 13 Locked QAM256 12 585000000 Hz -6.8 dBmV 37.2 dB 770 388 14 Locked QAM256 13 591000000 Hz -6.0 dBmV 37.3 dB 769 328 15 Locked QAM256 14 597000000 Hz -5.6 dBmV 37.3 dB 686 114 16 Locked QAM256 15 603000000 Hz -5.6 dBmV 32.6 dB 771 175 17 Locked QAM256 17 615000000 Hz -6.1 dBmV 33.4 dB 0 0 18 Locked QAM256 18 621000000 Hz -5.6 dBmV 32.0 dB 0 0 19 Locked QAM256 19 627000000 Hz -5.1 dBmV 37.9 dB 0 0 20 Locked QAM256 20 633000000 Hz -5.0 dBmV 38.1 dB 0 0 21 Locked QAM256 21 639000000 Hz -5.4 dBmV 37.8 dB 0 0 22 Locked QAM256 22 645000000 Hz -5.8 dBmV 36.7 dB 0 0 23 Locked QAM256 23 651000000 Hz -5.6 dBmV 25.6 dB 60 559 24 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 65 5120 Ksym/sec 36400000 Hz 54.0 dBmV 2 Locked ATDMA 66 5120 Ksym/sec 29500000 Hz 54.0 dBmV 3 Locked ATDMA 67 5120 Ksym/sec 22600000 Hz 53.3 dBmV 4 Locked ATDMA 68 5120 Ksym/sec 15700000 Hz 53.3 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 Thank you, Mike
