CM700 blinking upstream light

[electricLG]

I've had the Netgear CM700 for about a year now and all of a sudden within the last 2 days the upstream light has been blinking green nonstop. My internet connection seems fine and as far as I can tell the connection doesn't seem to drop. I tried troubleshooting the device by doing a reset, factory reset, and then finally contacting Xfinity. I tried explaining to the customer support person that the modem has never done this before, but he said it was normal. Based on the various posts on this topic it sure doesn't seem normal to me.

If my connection is working, should I even be concerned with this?  I've attached some screenshots of the logs.  Are there supposed to be unlocked channels for the Upstream?

Thanks.

[FURRYe38 · Accepted solution]

Please post a copy and paste of the modems connection status. Please post the download channels as well.
https://kb.netgear.com/30007/How-do-I-obtain-the-cable-connection-information-from-a-NETGEAR-cable-m...

Be sure your using a good quality LAN cable between the modem and router. CAT6 is recommended. 
What is the brand and model of the host wifi router connected to the modem?

You have lots of criticals that the ISP needs to review and resolve.

Have the ISP check the signal and line quality UP to the modem. Be sure the ISP provisions the modem correctly.
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 then back ON.
https://community.netgear.com/t5/Cable-Modems-Routers/General-info-and-Troubleshooting-for-Cable-Mod...
https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router
https://www.duckware.com/tech/solving-intermittent-cable-modem-issues.html

[FURRYe38 · Accepted solution]

Please post a copy and paste of the modems connection status. Please post the download channels as well.
https://kb.netgear.com/30007/How-do-I-obtain-the-cable-connection-information-from-a-NETGEAR-cable-m...

Be sure your using a good quality LAN cable between the modem and router. CAT6 is recommended. 
What is the brand and model of the host wifi router connected to the modem?

You have lots of criticals that the ISP needs to review and resolve.

Have the ISP check the signal and line quality UP to the modem. Be sure the ISP provisions the modem correctly.
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 then back ON.
https://community.netgear.com/t5/Cable-Modems-Routers/General-info-and-Troubleshooting-for-Cable-Mod...
https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router
https://www.duckware.com/tech/solving-intermittent-cable-modem-issues.html

[electricLG]

Here are the connection status and downstream screenshots from the modem. The modem is connected to my Netgear AC1900 router.

[FURRYe38]

Ok, power levels look good. No correct or un-correctables. 

You have lots of Criticals seen in th event logs. Something the ISP needs to review and resolve. 

Review the first post for additional help and information as well. 

[electricLG]

The issue seems to have corrected itself over night and I didn't even have to call the ISP.  Maybe one of the resets I did took care of it, who knows. Thanks for all of your troubleshooting suggestions.

[FURRYe38]

Hopefully something on the ISP side got fixed. 

Enjoy.