Current plan - 300Mbps
Speedtest results - consistently ~9Mbps down and up
Modem: Netgear CM500 Docsis 3.0
Router: Linksys Velop 3-node system
| Downstream Bonded Channels |
| Channel |
Lock Status |
Modulation |
Channel ID |
Frequency |
Power |
SNR |
Correctables |
Uncorrectables |
| 1 |
Locked |
QAM256 |
37 |
651000000 Hz |
-6.3 dBmV |
39.8 dB |
0 |
0 |
| 2 |
Locked |
QAM256 |
33 |
627000000 Hz |
-5.9 dBmV |
40 dB |
0 |
0 |
| 3 |
Locked |
QAM256 |
34 |
633000000 Hz |
-5.7 dBmV |
39.9 dB |
0 |
0 |
| 4 |
Locked |
QAM256 |
35 |
639000000 Hz |
-6.5 dBmV |
39.7 dB |
0 |
0 |
| 5 |
Locked |
QAM256 |
36 |
645000000 Hz |
-6.4 dBmV |
39.7 dB |
0 |
0 |
| 6 |
Locked |
QAM256 |
38 |
657000000 Hz |
-6.8 dBmV |
39.7 dB |
0 |
0 |
| 7 |
Locked |
QAM256 |
39 |
663000000 Hz |
-6.5 dBmV |
39.8 dB |
0 |
0 |
| 8 |
Locked |
QAM256 |
40 |
669000000 Hz |
-6.6 dBmV |
39.8 dB |
0 |
0 |
| 9 |
Locked |
QAM256 |
25 |
579000000 Hz |
-6.7 dBmV |
39.1 dB |
0 |
0 |
| 10 |
Locked |
QAM256 |
26 |
585000000 Hz |
-5.7 dBmV |
39.1 dB |
0 |
0 |
| 11 |
Locked |
QAM256 |
27 |
591000000 Hz |
-5.3 dBmV |
40.1 dB |
0 |
0 |
| 12 |
Locked |
QAM256 |
28 |
597000000 Hz |
-5.4 dBmV |
40.2 dB |
0 |
0 |
| 13 |
Locked |
QAM256 |
29 |
603000000 Hz |
-4.9 dBmV |
40.2 dB |
0 |
0 |
| 14 |
Locked |
QAM256 |
30 |
609000000 Hz |
-5.8 dBmV |
40 dB |
0 |
0 |
| 15 |
Locked |
QAM256 |
31 |
615000000 Hz |
-5.5 dBmV |
40 dB |
0 |
0 |
| 16 |
Locked |
QAM256 |
32 |
621000000 Hz |
-5.4 dBmV |
40.1 dB |
0 |
0 |
|
|
|
| Upstream Bonded Channels |
| Channel |
Lock Status |
US Channel Type |
Channel ID |
Symbol Rate |
Frequency |
Power |
| 1 |
Locked |
ATDMA |
6 |
5120 Ksym/sec |
30400000 Hz |
52.3 dBmV |
| 2 |
Locked |
ATDMA |
5 |
5120 Ksym/sec |
36800000 Hz |
52.3 dBmV |
| 3 |
Locked |
ATDMA |
7 |
5120 Ksym/sec |
24000000 Hz |
52.3 dBmV |
| 4 |
Locked |
ATDMA |
8 |
5120 Ksym/sec |
17600000 Hz |
52.3 dBmV |
|
After 2 hours with Xfinity last night, unplugging and resetting EVERYTHING, there is no change to performance. They told me at first the modem was the problem. This is a new Netgear modem and the power last night is similar to now. Then they put me on hold for a while and finally came back and said there has been a crew in my area working on cut lines for 2 weeks. No way to verify as there is no outage shown on any map.
Not looking for gig speed... just something CLOSER to what i'm paying for. I'm getting less than 5% of my expected download speed.
Any thoughts, recommendations, ideas appreciated.
EG
Expert
•
111.7K Messages
5 years ago
The upstream power is too high / out of spec. And the downstream power is on the weak side. That can cause random disconnects, spontaneous re-booting of the modem, speed, packet loss, and latency problems.
In a self troubleshooting effort to try to obtain better connectivity / more wiggle room, check to see if there are there any excess/unneeded coax cable splitters in the line leading to the modem that can be eliminated/re-configured. Any splitters that remain should be high quality and cable rated for 5-1002 MHz, bi-directional, and no gold colored garbage types like GE, RadioShack, RCA, Philips, Leviton, Magnavox, and Rocketfish from big box stores like Home Depot, Lowes, Target, Wal-Mart etc. Splitters should be swapped with known to be good / new ones to test
If there aren't any unneeded splitters that can be eliminated and if your coax wiring setup can't be reconfigured so that there is a single two way splitter connected directly off of the drop from the street/pole with one port feeding the modem and the other port feeding the rest of the house/equipment with additional splits as needed, and you've checked all the wiring and fittings for integrity and tightness and refresh them by taking them apart then check for and clean off any corrosion / oxidation on the center wire and put them back together again, then perhaps it's best to book a tech visit to investigate and correct.
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