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CM1000 and Xfinity woes
Greetings,
Ensure there are no coax cable line splitters in between the modem and ISP service box.
Ensure you using good quality RG6 coax cable between the modem and ISP service box.
Contact the ISP and have them check the signal line and quality up to the modem and check there logs for any disconnections on your line.
5 Replies
Ensure there are no coax cable line splitters in between the modem and ISP service box.
Ensure you using good quality RG6 coax cable between the modem and ISP service box.
Contact the ISP and have them check the signal line and quality up to the modem and check there logs for any disconnections on your line.
I have been having intermittent recurring issues with what I think is my CM1000 losing connection to Comcast's hardware. I troubleshooted and RMA'ed parts of my home network to see if that would fix it, but it didn't. I found this community just recently and have been diving in to research my issues. My WAN side connection to my ISP drops out periodically. If I powercycle the CM1000, the problem will fix itself right away. If I just leave it there - it will fix itself in 5 - 10 minutes. I found the web front-end to the CM1000 and started messing around with that. I decided to write a monitoring app that scrapes the CM1000 every few minutes and collects up the info. Trouble is, I am not very well versed in what I should be looking at to diagnose the issue. Here are some plots that I've built that cover:
https://imgur.com/a/vvF2cuE
Four outages occurred in the screen I've attached where the uncorrectable/correctable spiked, and also occurred where packet_loss goes non-zero. Does the SNR_MER or power values show anything meaningful? Are there other pieces of data I should collect and analyze? I'm actually having a bit of fun despite the outages digging into this stuff. I also plan on capturing info from my router, a Ubiquiti USG, to see if there is a correlation between the outages and upload/download or whatever else I can see on the USG.
Thanks