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timmyK
Dec 04, 2021Aspirant
NETGEAR c7000v2 slow speed with blinking lights
I have 200 Mbps connection and I get around 120-180 Mbps during the day. At nights, it gets slow. (20-40 Mbps).
These lights are blinking a green light on the router:
- Download arrow
- 2.4GHz icon
- 5 GHz icon
In cable connection page, I see "Downstream Bonded Channels (Partial Service)" but not sure what it means. I've tried restarting the router, but it didn't seem to help much.
Firmware Version
V1.03.03
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Downstream Bonded Channels (Partial Service) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Upstream Bonded Channels | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Extended Upstream Transmit Power | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Enable Extended Upstream Transmit Power | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Current System Time:Fri Dec 03 21:50:00 2021 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
System Up Time:19 days 13:47:28 |
4 Replies
- timmyKAspirant
This is the connection page after restarting the router. Speed seems faster now but the lights are still blinking.
Startup Procedure Procedure Status Comment Acquire Downstream Channel 651000000 Hz Locked Connectivity State OK Operational Boot State OK Operational Security Enabled BPI+ IP Provisioning Mode Honor MDD honorMdd(4) Downstream Bonded Channels (Partial Service) Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables 1 Locked QAM256 44 651000000 Hz -0.3 dBmV 39.7 dB 0 0 2 Locked QAM256 24 531000000 Hz -0.8 dBmV 38.7 dB 0 0 3 Locked QAM256 25 537000000 Hz -0.6 dBmV 40.2 dB 0 0 4 Locked QAM256 26 543000000 Hz -0.6 dBmV 40.1 dB 0 0 5 Locked QAM256 27 549000000 Hz -0.7 dBmV 40.1 dB 0 0 6 Locked QAM256 28 555000000 Hz -0.7 dBmV 39.8 dB 0 0 7 Locked QAM256 29 561000000 Hz -0.7 dBmV 39 dB 0 0 8 Locked QAM256 30 567000000 Hz -0.7 dBmV 39.5 dB 0 0 9 Locked QAM256 31 573000000 Hz -0.6 dBmV 39.9 dB 0 0 10 Locked QAM256 32 579000000 Hz -0.5 dBmV 39.7 dB 0 0 11 Locked QAM256 33 585000000 Hz -0.4 dBmV 39.8 dB 0 0 12 Locked QAM256 34 591000000 Hz -0.4 dBmV 39.4 dB 0 0 13 Locked QAM256 35 597000000 Hz -0.4 dBmV 38.1 dB 0 0 14 Not Locked Unknown 36 603000000 Hz 0.0 dBmV 0.0 dB 0 0 15 Locked QAM256 37 609000000 Hz -0.4 dBmV 33.4 dB 51928 9066 16 Locked QAM256 38 615000000 Hz -0.4 dBmV 40.1 dB 0 0 17 Locked QAM256 39 621000000 Hz -0.6 dBmV 40.5 dB 0 0 18 Locked QAM256 40 627000000 Hz -0.6 dBmV 38.8 dB 0 0 19 Locked QAM256 41 633000000 Hz -0.6 dBmV 38.6 dB 0 0 20 Locked QAM256 42 639000000 Hz -0.4 dBmV 40.2 dB 0 0 21 Locked QAM256 43 645000000 Hz -0.2 dBmV 40.8 dB 0 0 22 Locked QAM256 45 657000000 Hz -0.5 dBmV 40.3 dB 0 0 23 Locked QAM256 46 663000000 Hz -0.6 dBmV 40.3 dB 0 0 24 Locked QAM256 47 669000000 Hz -0.4 dBmV 40.3 dB 0 0 Upstream Bonded Channels Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power 1 Locked ATDMA 6 5120 Ksym/sec 22800000 Hz 52.3 dBmV 2 Locked ATDMA 5 5120 Ksym/sec 16400000 Hz 53.3 dBmV 3 Locked ATDMA 7 5120 Ksym/sec 29200000 Hz 50.8 dBmV 4 Locked ATDMA 8 5120 Ksym/sec 35600000 Hz 50 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 Extended Upstream Transmit Power Enable Extended Upstream Transmit Power Current System Time:Fri Dec 03 22:14:49 2021 System Up Time:00:08:27 - plemansGuru - Experienced User
Are you using an amplifier? Based off the power levels that you have for your downstream, your upstream is pretty high.
If you have any amplifiers, splitters, or signal attenuators in the line, remove them.
do you also have the modem event logs? That helps us check long term.
All rebooting does is clear out the errors. It might help the speeds short term if the modem connects on a different frequency but long term, it isn't going to fix the problem.
- timmyKAspirant
plemans Thanks for the reply. I don't have any amplifier setup. I hooked up the ISP cable directly into my router
Connection seems to be stable now, but the lights on the router are still blinking. (downstream arrow, 2.4ghz, 5 ghz icons).
Attaching the event logs:(Advanced > Administration > Event Logs)
Time Priority Description 2021-12-3, 22:13:04 Warning (5) MDD message timeout;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:01:5c:65:0e:72;CM-QOS=1.1;CM-VER=3.0; 1970-1-1, 00:00:45 Notice (6) Honoring MDD; IP provisioning mode = IPv6 1970-1-1, 00:00:40 Notice (6) WiFi Interface [wl1] set to Channel 153 (Side-Band Channel:N/A) - Reason:INIT 1970-1-1, 00:00:40 Notice (6) WiFi Interface [wl0] set to Channel 2 (Side-Band Channel:N/A) - Reason:INIT 1970-1-1, 00:00:37 Critical (3) SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; 2021-11-24, 12:22:52 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:01:5c:65:0e:72;CM-QOS=1.1;CM-VER=3.0; 2021-11-15, 12:35:58 Critical (3) SYNC Timing Synchronization failure - Failed to receive MAC SYNC frame within time-out period;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:01:5c:65:0e:72;CM-QOS=1.1;CM-VER=3.0; 1970-1-1, 00:00:37 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; 2021-11-8, 22:48:10 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:01:5c:65:0e:72;CM-QOS=1.1;CM-VER=3.0; 1970-1-1, 00:39:09 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:01:5c:65:0e:72;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:39:03 Critical (3) SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:01:5c:65:0e:72;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:38:58 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:01:5c:65:0e:72;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:38:56 Critical (3) SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:01:5c:65:0e:72;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:38:55 Critical (3) DHCP failed - DHCP Solicit sent, No DHCP Advertise received;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:01:5c:65:0e:72;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:38:07 Critical (3) SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:01:5c:65:0e:72;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:38:06 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:01:5c:65:0e:72;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:38:03 Critical (3) SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:01:5c:65:0e:72;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:37:24 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:01:5c:65:0e:72;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:37:22 Critical (3) DHCP failed - DHCP Solicit sent, No DHCP Advertise received;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:01:5c:65:0e:72;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:36:35 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:01:5c:65:0e:72;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:36:31 Critical (3) SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:36:29 Critical (3) No UCDs Received - Timeout;;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:36:12 Critical (3) SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:36:11 Critical (3) No UCDs Received - Timeout;;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:35:54 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:35:53 Critical (3) No UCDs Received - Timeout;;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:35:29 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:35:28 Critical (3) DHCP failed - DHCP Solicit sent, No DHCP Advertise received;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:01:5c:65:0e:72;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:34:41 Critical (3) SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:34:40 Critical (3) No UCDs Received - Timeout;;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:34:23 Critical (3) SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:34:22 Critical (3) No UCDs Received - Timeout;;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:34:05 Critical (3) SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:01:5c:65:0e:72;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:34:04 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:01:5c:65:0e:72;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:34:03 Critical (3) SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:01:5c:65:0e:72;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:34:01 Critical (3) DHCP failed - DHCP Solicit sent, No DHCP Advertise received;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:01:5c:65:0e:72;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:33:14 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:01:5c:65:0e:72;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:33:08 Critical (3) SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:01:5c:65:0e:72;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:33:08 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:01:5c:65:0e:72;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:33:06 Critical (3) SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=28:80:88:4d:0b:98;CMTS-MAC=00:01:5c:65:0e:72;CM-QOS=1.0;CM-VER=3.0;
And here is the logs (Advanced > Administration > Logs)I was very concerned about DoS attack at first, but then read online that it's a false alarm due to iPhone or iPad devices.
admin login failure] from source 192.168.0.21 1 Mon Dec 06 13:01:03 2021 0.0.0.0:0 192.168.0.21:0 [DoS attack: Ping Of Death] from 73.1.0.80, port 0 3 Mon Dec 06 12:49:22 2021 232.215.176.155:0 73.1.0.80:0 [DoS attack: Teardrop or derivative] from 73.1.0.80, port 0 1 Mon Dec 06 12:49:20 2021 232.215.176.155:0 73.1.0.80:0 [DoS attack: Ping Of Death] from 73.1.0.80, port 0 2 Mon Dec 06 12:48:36 2021 232.215.176.155:0 73.1.0.80:0 [DoS attack: Teardrop or derivative] from 73.1.0.80, port 0 2 Mon Dec 06 12:48:35 2021 232.215.176.155:0 73.1.0.80:0 [DoS attack: Ping Of Death] from 73.1.0.80, port 0 8 Mon Dec 06 12:46:33 2021 232.215.176.155:0 73.1.0.80:0