(Have Comcast gigabit service), Max speed I get hardwired ever was 800+. Usually hovers around 600. Have to reboot every day or two, otherwise download speed drops to 50mbps, upload speed remains constant at 42mbps. Rebooting modem "fixes" issue. The speed dropping and having to do a reboot to fix it is my issue. Got a new modem in december compatible with new gigabit service. Old modem with 300mbs service was rock solid.
https://www.speedtest.net/my-result/d/2109f6d2-c839-481e-8ff3-915eea3ec0c8
| Connection |
| | Startup Step | Status | Comment |
| | Acquire Downstream Channel | 549000000 Hz | Locked |
| | Upstream Connection | OK | Operational |
| | Boot State | OK | Operational |
| | Configuration File | OK | |
| | Security | Enabled | BPI+ |
|
|
| | System Up Time | 0 days 00h:20m:07s | |
| | Network Access | Allowed | |
|
|
| Downstream Bonded Channels | | |
|
| | Channel | Lock Status | Modulation | Channel ID | Freq. (MHz) | Pwr (dBmV) | SNR (dB) | Corrected | Uncorrected | | 1 | Locked | QAM256 | 13 | 549.0 | 3.5 | 42.2 | 0 | 0 | | 2 | Locked | QAM256 | 10 | 531.0 | 2.0 | 40.0 | 0 | 0 | | 3 | Locked | QAM256 | 11 | 537.0 | 3.3 | 42.1 | 0 | 0 | | 4 | Locked | QAM256 | 12 | 543.0 | 3.3 | 42.0 | 0 | 0 | | 5 | Locked | QAM256 | 14 | 555.0 | 3.5 | 42.1 | 0 | 0 | | 6 | Locked | QAM256 | 15 | 561.0 | 3.6 | 42.2 | 0 | 0 | | 7 | Locked | QAM256 | 16 | 567.0 | 3.4 | 42.2 | 0 | 0 | | 8 | Locked | QAM256 | 17 | 573.0 | 3.0 | 42.0 | 0 | 0 | | 9 | Locked | QAM256 | 18 | 579.0 | 2.8 | 42.0 | 0 | 0 | | 10 | Locked | QAM256 | 19 | 585.0 | 3.3 | 42.0 | 0 | 0 | | 11 | Locked | QAM256 | 20 | 591.0 | 3.7 | 42.3 | 0 | 0 | | 12 | Locked | QAM256 | 21 | 597.0 | 3.9 | 42.2 | 0 | 0 | | 13 | Locked | QAM256 | 22 | 603.0 | 4.0 | 42.2 | 0 | 0 | | 14 | Locked | QAM256 | 23 | 609.0 | 3.8 | 42.1 | 0 | 0 | | 15 | Locked | QAM256 | 24 | 615.0 | 3.6 | 41.8 | 0 | 0 | | 16 | Locked | QAM256 | 25 | 621.0 | 3.9 | 41.9 | 0 | 0 | | 17 | Locked | QAM256 | 26 | 627.0 | 3.9 | 41.8 | 0 | 0 | | 18 | Locked | QAM256 | 27 | 633.0 | 4.1 | 41.7 | 0 | 0 | | 19 | Locked | QAM256 | 28 | 639.0 | 4.2 | 41.7 | 0 | 0 | | 20 | Locked | QAM256 | 29 | 645.0 | 4.2 | 41.9 | 0 | 0 | | 21 | Locked | QAM256 | 30 | 651.0 | 4.2 | 41.7 | 0 | 0 | | 22 | Locked | QAM256 | 31 | 657.0 | 4.1 | 41.7 | 0 | 0 | | 23 | Locked | QAM256 | 32 | 663.0 | 3.8 | 41.7 | 0 | 0 | | 24 | Locked | QAM256 | 33 | 669.0 | 3.7 | 41.5 | 0 | 0 | | 25 | Locked | QAM256 | 34 | 675.0 | 3.3 | 41.4 | 0 | 0 | | 26 | Locked | QAM256 | 35 | 681.0 | 3.1 | 41.3 | 0 | 0 | | 27 | Locked | QAM256 | 36 | 687.0 | 2.9 | 41.2 | 0 | 0 | | 28 | Locked | QAM256 | 37 | 693.0 | 2.6 | 41.0 | 0 | 0 | | 29 | Locked | QAM256 | 38 | 699.0 | 2.0 | 40.6 | 0 | 0 | | 30 | Locked | QAM256 | 39 | 705.0 | 1.8 | 40.6 | 0 | 0 | | 31 | Locked | QAM256 | 40 | 711.0 | 2.1 | 40.6 | 0 | 0 | | 32 | Locked | OFDM PLC | 41 | 762.0 | 0.9 | 39.6 | 5978565 | 0 |
|
| | Channel | Lock Status | Channel Type | Channel ID | Symb. Rate (Ksym/sec) | Freq. (MHz) | Pwr (dBmV) | | 1 | Locked | SC-QAM | 1 | 5120 | 35.6 | 45.3 | | 2 | Locked | SC-QAM | 2 | 5120 | 29.2 | 45.3 | | 3 | Locked | SC-QAM | 3 | 5120 | 22.8 | 44.3 | | 4 | Locked | SC-QAM | 4 | 5120 | 16.4 | 44.3 | | 5 | Locked | SC-QAM | 5 | 2560 | 40.4 | 43.3 |
|
| Downstream Frequency Setting | | | |
| | Downstream Frequency Select |
| |
|
|
|
| LAG(Link Aggregation Group, or Ethernet Port Bonding) | Disable Enable | |
|
|
EG
Expert
•
111.6K Messages
4 years ago
The signal stats looked o/k at that snapshot in time. Are there any error log entries being shown ? If so, please post them in their entirety.
What is the exact make and model number of the modem ?
0
0
robby69
Frequent Visitor
•
8 Messages
4 years ago
Thanks for your help. I had 300mbps with surfboard modem and had no issues. Only reason I wen to Gigabit was because it was $10 cheaper since I went off 1yr 300mpbs contract. I have not had any issues with Comcast except for the occassional outage.
0
0
EG
Expert
•
111.6K Messages
4 years ago
Quite welcome !
0
0
EG
Expert
•
111.6K Messages
4 years ago
Even though the signal stats looked o/k at that snapshot in time, the error log entries confirm that something is going on. Perhaps there is noise ingress into the line(s) somewhere.
There are other signal stat figures that can't be read by the modem. They are the "Upstream Rx Power" (Upstream Receive Power Level), the "Upstream SNR Ch." (Upstream Signal To Noise Ratio), and the "Upstream ICFR" (In Channel Frequency Response). These are as equally important in diagnosing connectivity issues as are the modem's stats.
I'm going to escalate your issue to the Comcast corporate employees that are available to these boards. They can check the CMTS (Cable Modem Termination System) for any real time degradation and / or error reports, see your node / cable plant and modem health, and see whether or not everything is in the green zone. They can also see a history plot for the modem and poll for those upstream receive signal stats.
You should get a reply here in your topic. Good luck !
0
0