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Forum Discussion
NightHawk Cable Modem Router c7000v2 Downstream Channel Lock Amber Light
I have recently noticed that an LED is amber--apparently indicating that there is one upstream channel locked. I have called Spectrum, my Internet vendor, and tech support rep told me that the signa...
What led is amber? there's quite a few.
Do you have a screensnip of the cable connections page and event logs? those help us to check the line
Sorry, the upstream channel LED is lit, which means that there is an upstream channel which is locked, correct? I am not sure what the significance of this is. Thanks for any help you can give.
Here is a screenshot of the event log.
Time
Priority Description 2023-9-27, 03:37:33 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; 2023-9-27, 03:37:35 Critical (3) SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; 2023-9-27, 03:37:35 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; 2023-9-27, 03:37:36 Critical (3) SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; 2023-9-27, 03:37:36 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; 2023-9-27, 03:37:44 Critical (3) SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; 2023-9-27, 03:37:44 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; 2023-9-27, 03:37:52 Critical (3) SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; 2023-9-27, 03:37:52 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; 2023-9-27, 03:37:53 Critical (3) SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; 2023-9-27, 03:37:53 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; 2023-9-27, 03:40:16 Critical (3) SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; 2023-9-27, 03:40:22 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:01:5c:bd:dc:b5;CM-QOS=1.0;CM-VER=3.0; 2023-9-27, 03:40:53 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:01:5c:bd:dc:b5;CM-QOS=1.0;CM-VER=3.0; 2023-9-27, 03:41:44 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:01:5c:bd:dc:b5;CM-QOS=1.0;CM-VER=3.0; 2023-9-27, 03:41:45 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:01:5c:bd:dc:b5;CM-QOS=1.0;CM-VER=3.0; 2023-9-28, 16:19:15 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:01:5c:bd:dc:b5;CM-QOS=1.1;CM-VER=3.0; 2023-9-28, 16:30:03 Critical (3) SYNC Timing Synchronization failure - Failed to receive MAC SYNC frame within time-out period;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:01:5c:bd:dc:b5;CM-QOS=1.1;CM-VER=3.0; 2023-9-28, 16:30:04 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:01:5c:bd:dc:b5;CM-QOS=1.1;CM-VER=3.0; 1970-1-1, 00:00:39 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:00:44 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:01:5c:bd:dc:b5;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:00:39 Critical (3) SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; 2023-11-25, 10:40:17 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:01:5c:bd:dc:b5;CM-QOS=1.1;CM-VER=3.0; 2023-12-22, 04:35:33 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:01:5c:bd:dc:b5;CM-QOS=1.1;CM-VER=3.0; 2023-12-28, 18:06:16 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:01:5c:bd:dc:b5;CM-QOS=1.1;CM-VER=3.0; 2024-1-7, 02:26:01 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:01:5c:bd:dc:b5;CM-QOS=1.1;CM-VER=3.0; 2024-1-18, 06:23:51 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:01:5c:bd:dc:b5;CM-QOS=1.1;CM-VER=3.0; 2024-1-28, 13:18:34 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:01:5c:bd:dc:b5;CM-QOS=1.1;CM-VER=3.0; 2024-2-4, 19:04:14 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:01:5c:bd:dc:b5;CM-QOS=1.1;CM-VER=3.0; 2024-2-10, 21:19:46 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:01:5c:bd:dc:b5;CM-QOS=1.0;CM-VER=3.0; 2024-2-10, 13:21:10 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:01:5c:bd:dc:b5;CM-QOS=1.1;CM-VER=3.0; 2024-2-10, 13:21:11 Critical (3) REG RSP not received;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:01:5c:bd:dc:b5;CM-QOS=1.1;CM-VER=3.0; 2024-2-10, 13:21:29 Critical (3) SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:01:5c:bd:dc:b5;CM-QOS=1.0;CM-VER=3.0; 2024-2-10, 13:21:35 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:01:5c:bd:dc:b5;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:00:37 Critical (3) SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:00:41 Notice (6) WiFi Interface [wl0] set to Channel 1 (Side-Band Channel:N/A) - Reason:INIT 1970-1-1, 00:00:41 Notice (6) WiFi Interface [wl1] set to Channel 153 (Side-Band Channel:N/A) - Reason:INIT 1970-1-1, 00:00:46 Notice (6) Overriding MDD IP initialization parameters; IP provisioning mode = IPv6 2024-2-13, 16:45:32 Error (4) Missing BP Configuration Setting TLV Type: 17.8;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:01:5c:bd:dc:b5;CM-QOS=1.1;CM-VER=3.0; 2024-2-13, 16:45:32 Error (4) Missing BP Configuration Setting TLV Type: 17.9;CM-MAC=80:cc:9c:7b:73:c8;CMTS-MAC=00:01:5c:bd:dc:b5;CM-QOS=1.1;CM-VER=3.0; Here is a view of the upstream portion of the cable connections page.
Apply Cancel 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 567000000 Hz Locked Connectivity State OK Operational Boot State OK Operational Security Enabled BPI+ IP Provisioning Mode IPv6 Only ipv6Only(1)
Upstream Bonded ChannelsChannel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power 1 Locked ATDMA 1 5120 Ksym/sec 17800000 Hz 52.5 dBmV 2 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV 3 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV 4 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 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 Start with removing any amplifiers, signal attenuators, or splitters from the coax.
From there, check the line for kinks, damage, and 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.
If you can, simply connect the modem right where the coax comes into the home. This prevents wiring in the home from being the issue. And some ISPs charge if the wiring issue is in the home. So this helps prevent this.Your logs indicate line issues. tough to know about the cable connections page as you only included the upstream and missed the downstream.
My last posting was limited to a maximum size, so here is the downstream cable connections info.
Downstream Bonded Channels Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables 1 Locked QAM256 2 567000000 Hz -2 dBmV 40 dB 0 0 2 Locked QAM256 3 573000000 Hz -2.8 dBmV 39.5 dB 0 0 3 Locked QAM256 4 579000000 Hz -4.2 dBmV 37.9 dB 0 0 4 Locked QAM256 5 585000000 Hz -3.7 dBmV 38.9 dB 0 0 5 Locked QAM256 6 591000000 Hz -3.6 dBmV 37.7 dB 0 0 6 Locked QAM256 8 603000000 Hz -3.7 dBmV 38.4 dB 0 0 7 Locked QAM256 9 609000000 Hz -2.5 dBmV 38.4 dB 0 0 8 Locked QAM256 11 621000000 Hz -1.5 dBmV 39.6 dB 0 0 9 Locked QAM256 12 627000000 Hz -0.5 dBmV 40.3 dB 0 0 10 Locked QAM256 13 633000000 Hz 1.4 dBmV 41.7 dB 0 0 11 Locked QAM256 14 639000000 Hz 1.9 dBmV 41 dB 0 0 12 Locked QAM256 15 645000000 Hz 2.3 dBmV 42.4 dB 0 0 13 Locked QAM256 16 651000000 Hz 2.2 dBmV 42.1 dB 0 0 14 Locked QAM256 17 657000000 Hz 0 dBmV 40.4 dB 0 0 15 Locked QAM256 18 663000000 Hz -1.2 dBmV 40.1 dB 0 0 16 Locked QAM256 20 675000000 Hz -2.9 dBmV 38.6 dB 3355 6854 17 Locked QAM256 21 681000000 Hz -3.8 dBmV 37.5 dB 0 0 18 Locked QAM256 22 687000000 Hz -4.3 dBmV 37.5 dB 0 0 19 Locked QAM256 26 723000000 Hz -0.9 dBmV 40.6 dB 0 0 20 Locked QAM256 28 735000000 Hz 0.9 dBmV 42 dB 0 0 21 Locked QAM256 30 747000000 Hz 0.2 dBmV 41.3 dB 0 0 22 Locked QAM256 31 753000000 Hz -1.1 dBmV 40.5 dB 0 0 23 Locked QAM256 32 759000000 Hz -2.4 dBmV 38.6 dB 0 0 24 Locked QAM256 33 765000000 Hz -4.9 dBmV 37.3 dB 0