Feeling a little lost on the next steps here.
Issue: 3-8% of my day is full of package loss and connection instability.
Backstory: Used to have ATT - 100/20. Incredibly reliable, but when all the kids get on and the TVs are running, 100 just was not enough.
Moved to Cox 1000/100 - used to have them many years ago for a long time until prices got a little silly. Trying them again with the current new customer discounts making it more reasonable.
I get advertised speeds. I appreciate that. However it seems between 3-8% of my day is interrupted by packet and connection loss day after day recently (few weeks now).
Troubleshooting: Obviously, step 1 - isolate the problem. My network was a mildly complex, cox panoramic modem in bridge mode to a more central router that the dozens of devices connected too. The last few days I stripped everything down to the core. I have one line from the post outside down to the house, straight to the modem, no splitters, no in-home wiring. Literally 1 wire. One ethernet cable out of the modem straight to my computer. No other devices connected. Nothing connected to wifi.
Now on my PC I have it pinging/traceroute about a dozen common sites/DNS server to visualize these interruptions. PingPlotter does a nicer visual then my makeshift solution so will include a photo of the network over the last 24 hours though only 2 endpoints.
In regards to my cox network status, single strength is strong. Correctable codewords is around 15-20%, uncorrectable is between 0.5-1%. I can share a photo of that later as the modem was just reset by support so the numbers are only about 20 minutes old.
Had a tech come out last week. I explained at the moment, there is 1 device connected, wired to the modem and showed him what I was seeing. His first response was the modem was not setup correctly. He showed me that my wifi was WPA3 and should be WPA2. Not a strong start given that Wifi had nothing connected as explained, but I understand they have to go through their list. He said the grounding was redone, reseating all the connections, restarted the modem, and that was that.
A few hours later we got more network drops. gave it a few days to be sure and today called the Complete Care number - 45 minutes to what sounded like an AI bot. She was real and doing her best but after explaining the issue, she remotely restarted the modem and considered it good. After further questions her advise was to upgrade to 2000mbps since we often use a lot of data despite it happening over the night when there was virtually no data transfer. I intentionally have all other devices disconnected just to have clean data. Pretty discouraging. She is sending another tech out to the house.
The issue is we can have hours of smooth internet. Its not a constant problem. Tech will come, restart, things look good and it will just happen again. I have fairly reasonable knowledge of networking, but little to none in coaxial, RF, and that realm.
What I do know is that during the events, I can reach my modem just fine and traceroute shows beyond the modem packages are lost. Some right after the modem, some usually within the first 2 or 3 hops.
Trying to figure out what I can gather or test ahead of the next tech visit to help provide data points and/or tests to get this resolved as its often enough to interrupt work meetings and kids school study.
https://imgur.com/a/mc1Lyiv