NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.
Forum Discussion
C3000 frequent disconnects, intermittent service - what's wrong?
For the last 72 hours, my service has been cutting in and out. My ISP (Time Warner) says everything is fine from their end. Like most people, I can't get any free support from Netgear as my device is...
Can anyone help? Here's my latest logs. I just had a period of no issues for 48 hours and 5 minutes ago it cut out and now I have same issue again. Could it be any of the reasons I cite below? Should I try an attenuator? Connection: 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 321000000 Hz Locked Connectivity State In Progress Registration Complete Boot State Configuration File Security Failed Disabled Downstream Bonded Channels Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables 1 QAM256 321000000 Hz 2.5 dBmV 41.3 dB 817 326 2 QAM256 303000000 Hz 2.2 dBmV 40.9 dB 84 101 3 QAM256 309000000 Hz 2.1 dBmV 40.6 dB 148 47 4 QAM256 315000000 Hz 2.1 dBmV 40.9 dB 133 64 5 QAM256 297000000 Hz 1.9 dBmV 40.8 dB 133 75 6 QAM256 279000000 Hz 1.4 dBmV 40.2 dB 183 43 7 QAM256 285000000 Hz 1.6 dBmV 40.2 dB 104 123 8 QAM256 291000000 Hz 1.8 dBmV 40.7 dB 122 99 Upstream Bonded Channels Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power 1 ATDMA 5120 Ksym/sec 23800000 Hz 56 dBmV 2 Unknown 0 Ksym/sec 0 Hz 0.0 dBmV 3 Unknown 0 Ksym/sec 0 Hz 0.0 dBmV 4 Unknown 0 Ksym/sec 0 Hz 0.0 dBmV Event Log: Time Priority Description 2015-8-15, 00:00:23.0 Critical (3) TFTP Request Retries exceeded, CM unable to register 2015-8-15, 00:00:28.0 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:17:10:88:37:21;CM-QOS=1.0;CM-VER=3.0; 2015-8-15, 00:00:45.0 Critical (3) DHCP FAILED - Request sent, No response;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:17:10:88:37:21;CM-QOS=1.0;CM-VER=3.0; 2015-8-15, 00:00:49.0 Critical (3) REG RSP not received;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:17:10:88:37:21;CM-QOS=1.1;CM-VER=3.0; 2015-8-15, 00:40:44.0 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:17:10:88:37:21;CM-QOS=1.1;CM-VER=3.0; 2015-8-15, 00:41:33.0 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:17:10:88:37:21;CM-QOS=1.1;CM-VER=3.0; 2015-8-15, 00:41:44.0 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:17:10:88:37:21;CM-QOS=1.0;CM-VER=3.0; 2015-8-15, 01:20:25.0 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:17:10:88:37:21;CM-QOS=1.1;CM-VER=3.0; 2015-8-15, 01:20:29.0 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:17:10:88:37:21;CM-QOS=1.1;CM-VER=3.0; 2015-8-15, 01:20:30.0 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:17:10:88:37:21;CM-QOS=1.1;CM-VER=3.0; 2015-8-15, 01:20:31.0 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:17:10:88:37:21;CM-QOS=1.1;CM-VER=3.0; 2015-8-15, 01:20:33.0 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:17:10:88:37:21;CM-QOS=1.1;CM-VER=3.0; 2015-8-15, 01:20:34.0 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:17:10:88:37:21;CM-QOS=1.1;CM-VER=3.0; 2015-8-15, 01:20:35.0 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:17:10:88:37:21;CM-QOS=1.1;CM-VER=3.0; 2015-8-15, 01:20:37.0 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:17:10:88:37:21;CM-QOS=1.1;CM-VER=3.0; 2015-8-15, 01:20:38.0 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:17:10:88:37:21;CM-QOS=1.1;CM-VER=3.0; 2015-8-15, 01:20:39.0 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:17:10:88:37:21;CM-QOS=1.1;CM-VER=3.0; 2015-8-15, 01:20:40.0 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:17:10:88:37:21;CM-QOS=1.1;CM-VER=3.0; 2015-8-15, 01:20:41.0 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:17:10:88:37:21;CM-QOS=1.1;CM-VER=3.0; 2015-8-15, 01:21:13.0 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:17:10:88:37:21;CM-QOS=1.1;CM-VER=3.0; 2015-8-16, 03:53:13.0 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:17:10:88:37:21;CM-QOS=1.1;CM-VER=3.0; 2015-8-16, 03:53:17.0 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:17:10:88:37:21;CM-QOS=1.1;CM-VER=3.0; 2015-8-16, 03:53:18.0 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:17:10:88:37:21;CM-QOS=1.1;CM-VER=3.0; 2015-8-16, 09:19:24.0 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:17:10:88:37:21;CM-QOS=1.1;CM-VER=3.0; 1970-1-1, 00:00:32.0 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:00:35.0 Notice (6) WiFi Interface [wl0] set to Channel 11 (Side-Band Channel:N/A) - Reason:INIT 1970-1-1, 00:00:40.0 Notice (6) Honoring MDD; IP provisioning mode = IPv4 1970-1-1, 00:00:43.0 Critical (3) DHCP FAILED - Discover sent, no offer received;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:17:10:88:37:21;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:01:43.0 Warning (5) DHCP WARNING - Non-critical field invalid in response ;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:17:10:88:37:21;CM-QOS=1.0;CM-VER=3.0; 2015-8-16, 19:28:25.0 Error (4) Missing BP Configuration Setting TLV Type: 17.8;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:17:10:88:37:21;CM-QOS=1.1;CM-VER=3.0; 2015-8-16, 19:28:25.0 Error (4) Missing BP Configuration Setting TLV Type: 17.9;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:17:10:88:37:21;CM-QOS=1.1;CM-VER=3.0; 2015-8-16, 19:28:28.0 Critical (3) REG RSP not received;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:17:10:88:37:21;CM-QOS=1.1;CM-VER=3.0; 2015-8-16, 19:28:52.0 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:17:10:88:37:21;CM-QOS=1.1;CM-VER=3.0; 2015-8-16, 19:30:07.0 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:17:10:88:37:21;CM-QOS=1.1;CM-VER=3.0; 2015-8-16, 19:30:19.0 Notice (6) Honoring MDD; IP provisioning mode = IPv4 2015-8-16, 19:30:22.0 Critical (3) DHCP FAILED - Discover sent, no offer received;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:17:10:88:37:21;CM-QOS=1.0;CM-VER=3.0; 2015-8-16, 19:30:34.0 Warning (5) DHCP WARNING - Non-critical field invalid in response ;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:17:10:88:37:21;CM-QOS=1.0;CM-VER=3.0; 2015-8-16, 19:30:37.0 Error (4) Missing BP Configuration Setting TLV Type: 17.8;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:17:10:88:37:21;CM-QOS=1.1;CM-VER=3.0; 2015-8-16, 19:30:37.0 Error (4) Missing BP Configuration Setting TLV Type: 17.9;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:17:10:88:37:21;CM-QOS=1.1;CM-VER=3.0; 2015-8-16, 19:30:47.0 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=20:0c:c8:27:46:b4;CMTS-MAC=00:17:10:88:37:21;CM-QOS=1.1;CM-VER=3.0; |
Hello dfree86
I am seeign your having alot of T3 timeouts are you noticing dropouts during certain times during the day? I have seen snr issues cause these drop outs also I have seen over utilization. But the first thing I would do is make sure your modem is connected directly to the cable outlet with not splitters or if it possible try moving to another active cable outlet in your home to see if you still experience these issues. hope to hear your feedback.
DarrenM
