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Netgear C6300v2 - Comcast/Xfinity Speed Problems not WiFi
Issue My C6300/AC1750 cable modem/router (Docsis 3.0) is having constant speed problems on Comcast/Xfinity. WiFi is fine on both 2.4 and 5.0GHz. The issue is with the speed as tested by speedtest...
Thanks for the replies. Some were useful, some not. I got a notification that one was accepted as a solution. Not sure how that happens because I didn't do it and it certainly wasn't a "solution". I've called Xfinity and they've agreed to loan me a modem/router free of charge for a few days to test it. I suspect it will work perfectly, but at least I'll be able to compare values of the settings.
Your upstream bonded channels do look a bit bordeline high... staying under 50dBmV is what's acceptable here in the midwest, not sure if it applies everywhere. If you're only using internet service from your ISP and nothing else (no cable boxes or Dish boxes), I would suggest looking around the house or in your utility room for cable splitters. See if you can simplify things with bypassing the cable splitter and with connecting the incoming feed directly to the outlet leading up to the modem. It's going to be that, or it's going to be a bad outside cable to the utility pole.
NachoWifi wrote:
Your upstream bonded channels do look a bit bordeline high... staying under 50dBmV is what's acceptable here in the midwest, not sure if it applies everywhere. If you're only using internet service from your ISP and nothing else (no cable boxes or Dish boxes), I would suggest looking around the house or in your utility room for cable splitters. See if you can simplify things with bypassing the cable splitter and with connecting the incoming feed directly to the outlet leading up to the modem. It's going to be that, or it's going to be a bad outside cable to the utility pole.
There is one splitter on the outside of the house. The tech checked everything from the pole and throughout the house. I watched him connect a meter, but I didn't write down the numbers he was reading off. He did replace one connector at the pole.
All the tech support seems to think it's configuration issues at the ISP and they "do something" that seems to work (and as I've said, rebooting fixes it very temporariy, so of course it works from their perspective).