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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 signal is strong, both upstream and downstream. I no longer have Netgear free tech support available. When I called Netgear, the rep referred me back to Spectrum. I need help in troubleshooting this. I have already turned the router off and on for about 1 minute. Initially the LED is green, and then turns amber.
4 Replies
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.
