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Intermittent connectivity issues

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I'm having occasional problems with my connection - it's making it hard to do anything for more than 20 minute at a time (Netflix, MMOs, etc). I have 25/5 speeds, so I'm not expecting blazing fast downloads, but it shouldn't be dropping me entirely.

 

All devices are connected wirelessly, unfortunately. Cable outlets are not in conveinet places.

 

Ping tests to comcast.net are showing 4-5% packet loss, which seems a little high.

 

Connection info:

 

DownstreamChannel Bonding Value
Index12345678
Lock StatusLockedLockedLockedLockedLockedLockedLockedLocked
Frequency723 MHz699 MHz705 MHz711 MHz717 MHz729 MHz735 MHz741 MHz
SNR40.8 dB40.8 dB40.4 dB40.5 dB40.8 dB40.8 dB40.8 dB40.8 dB
Power-4.1 dBmV-5.1 dBmV-5.5 dBmV-4.8 dBmV-4.5 dBmV-3.8 dBmV-3.8 dBmV-3.6 dBmV
Modulation256 QAM256 QAM256 QAM256 QAM256 QAM256 QAM256 QAM256 QAM

 

UpstreamChannel Bonding Value
Index1234
Lock StatusLockedLockedLockedNot locked
Frequency23 MHz36 MHz29 MHz 
Symbol Rate5120 Ksym/sec5120 Ksym/sec5120 Ksym/sec 
Power Level41.5 dBmV43.0 dBmV43.0 dBmV 
ModulationATDMAATDMAATDMA 
Channel ID312 

 

I found a ton of errors from three days ago. Would this indicate a problem with my modem? (I use the Comcast provided modem/router)

 

Fri May 27 15:22:51 2016Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=44:32:c8:d5:04:8b;CMTS-MAC=00:13:5f:05:14:4d;CM-QOS=1.1;CM-VER=3.0;
Fri May 27 15:22:05 2016Notice (6) TLV-11 - unrecognized OID;CM-MAC=44:32:c8:d5:04:8b;CMTS-MAC=00:13:5f:05:14:4d;CM-QOS=1.1;CM-VER=3.0;
Fri May 27 15:21:39 2016Notice (6) Honoring MDD; IP provisioning mode = IPv6
Fri May 27 15:21:21 2016Critical (3) TFTP Request Retries exceeded, CM unable to register
Fri May 27 15:21:21 2016Critical (3) TFTP failed - Request sent - No Response;CM-MAC=44:32:c8:d5:04:8b;CMTS-MAC=00:13:5f:05:14:4d;CM-QOS=1.0;CM-VER=3.0;
Fri May 27 15:20:36 2016Notice (6) Honoring MDD; IP provisioning mode = IPv6
Fri May 27 15:20:16 2016Critical (3) TFTP Request Retries exceeded, CM unable to register
Fri May 27 15:20:16 2016Critical (3) TFTP failed - Request sent - No Response;CM-MAC=44:32:c8:d5:04:8b;CMTS-MAC=00:13:5f:05:14:4d;CM-QOS=1.0;CM-VER=3.0;
Fri May 27 15:19:34 2016Notice (6) Honoring MDD; IP provisioning mode = IPv6
Fri May 27 15:19:28 2016Critical (3) No Ranging Response received - T3 time-out;CM-MAC=44:32:c8:d5:04:8b;CMTS-MAC=00:13:5f:05:14:4d;CM-QOS=1.0;CM-VER=3.0;
Fri May 27 15:19:15 2016Critical (3) TFTP Request Retries exceeded, CM unable to register
Fri May 27 15:19:15 2016Critical (3) TFTP failed - Request sent - No Response;CM-MAC=44:32:c8:d5:04:8b;CMTS-MAC=00:13:5f:05:14:4d;CM-QOS=1.0;CM-VER=3.0;
Fri May 27 15:18:15 2016Notice (6) Honoring MDD; IP provisioning mode = IPv6
Fri May 27 15:17:57 2016Critical (3) TFTP Request Retries exceeded, CM unable to register
Fri May 27 15:17:57 2016Critical (3) TFTP failed - Request sent - No Response;CM-MAC=44:32:c8:d5:04:8b;CMTS-MAC=00:13:5f:05:14:4d;CM-QOS=1.0;CM-VER=3.0;
Fri May 27 15:17:04 2016Notice (6) Honoring MDD; IP provisioning mode = IPv6
Fri May 27 15:16:59 2016Critical (3) No Ranging Response received - T3 time-out;CM-MAC=44:32:c8:d5:04:8b;CMTS-MAC=00:13:5f:05:14:4d;CM-QOS=1.0;CM-VER=3.0;
Fri May 27 15:16:45 2016Critical (3) TFTP Request Retries exceeded, CM unable to register
Fri May 27 15:16:45 2016Critical (3) TFTP failed - Request sent - No Response;CM-MAC=44:32:c8:d5:04:8b;CMTS-MAC=00:13:5f:05:14:4d;CM-QOS=1.0;CM-VER=3.0;

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