I'm hoping that a Mediacom tech can help me out with the T3 timeouts that started about 2 weeks ago. Here are the details:
Modem: Zoom 5341J (5.5.4.9J)
Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables
1 Locked QAM256 7 159000000 Hz 3.7 dBmV 41.9 dBmV 520 410
2 Locked QAM256 3 123000000 Hz 3.7 dBmV 42.0 dBmV 427 262
3 Locked QAM256 4 129000000 Hz 3.7 dBmV 41.9 dBmV 634 247
4 Locked QAM256 5 147000000 Hz 3.7 dBmV 41.9 dBmV 449 59
5 Locked QAM256 6 153000000 Hz 3.6 dBmV 41.9 dBmV 455 62
6 Locked QAM256 2 117000000 Hz 3.4 dBmV 41.4 dBmV 276 130
7 Locked QAM256 8 165000000 Hz 3.4 dBmV 41.9 dBmV 523 78
8 Locked QAM256 9 171000000 Hz 3.2 dBmV 41.9 dBmV 416 62
Upstream Bonded Channels
Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1 Locked ATDMA 1 5120 Ksym/sec 36000000 Hz 45.8 dBmV
2 Locked ATDMA 2 5120 Ksym/sec 29600000 Hz 44.5 dBmV
3 Locked ATDMA 3 5120 Ksym/sec 23200000 Hz 44.5 dBmV
4 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
The following occurs in the log every 30 minutes after powering on:
Time Priority Description
Thu Jan 25 11:54:33 2018 Warning (5) DHCP WARNING - Non-critical field invalid in response ;CM-MAC...
Thu Jan 25 11:54:26 2018 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=xx:xx:xx:xx...
Thu Jan 25 11:54:15 2018 Error (4) DHCP RENEW sent - No response for IPv4;CM-MAC=xx:xx:xx:xx:xx:...
Thu Jan 25 11:54:15 2018 Critical (3) DHCP RENEW FAILED - Critical field invalid in response
I've replaced all connections with new compression fittings and even replaced the grounding block in the demarc box on the side of the house. The T3 timeouts still occur even if the modem is directly connected to the main line coming into the house. A brand new modem also experienced the timeouts. I think the problem might be at the local junction box. Any ideas? Thanks
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