Hello, because of this coronavirus I have been working from home, occasionally I will lose connection to the internet. The problem as far as I can figure is my up stream. The attached photo is a screenshot from my modems internet page during a disconnect. See in the upstream toward the bottom the unknown channels? Why does it do that and how do I fix it if that makes sense?Thanks

Have the ISP check the signal and line quality UP to the modem. Be sure there are no coax cable line splitters in the between the modem and ISP service box. Be sure your using good quality RG6 coax cable up to the modem. Be sure to power OFF the modem for 1 minute them back ON.

I have a technician coming so I will. Thanks for the help.

Thats unfortunate. Like FURRYe38 said, amplifying a bad signal doesn't help any. If its the wiring going to the apartment, an amplifier could just make it worse.

Thanks for your help. This has been really frustrating but at least I know what the problem is thanks to you guys. I really appreciate it.

both your downstream has to many errors and your upstream isn't locking and is to high on power. try removing any splitters, attenuators, or amplifiers from your line. preferablly hook the modem to right where the coax enters the home without anything in your line. Then use it for a bit and re-run the cable connections page.If it isn't any better, then your isp needs to check your line.

C6900 connection issues | NETGEAR Communities

11 Replies

plemans
Guru - Experienced User
May 27, 2020
both your downstream has to many errors and your upstream isn't locking and is to high on power.
try removing any splitters, attenuators, or amplifiers from your line. preferablly hook the modem to right where the coax enters the home without anything in your line.
Then use it for a bit and re-run the cable connections page.
If it isn't any better, then your isp needs to check your line.
- Bturchi1
  Guide
  May 27, 2020
  Thank you
  - FURRYe38
    Guru - Experienced User
    May 27, 2020
    Let us know how it turns out.
FURRYe38
Guru - Experienced User
May 27, 2020
Have the ISP check the signal and line quality UP to the modem.
Be sure there are no coax cable line splitters in the between the modem and ISP service box.
Be sure your using good quality RG6 coax cable up to the modem.
Be sure to power OFF the modem for 1 minute them back ON.

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C6900 connection issues