You're experiencing some unusual network issues. Let's try to resolve this together.
You're experiencing some unusual network issues. Let's try to resolve this together.
Began a few months ago, every weekend my internet would suddenly stop working completely. I resolved it because it was simpler than contacting Xfinity support. Now it’s happening daily, and I’m struggling to identify the exact problem. Can someone assist in diagnosing what’s causing this? It usually takes a long time to connect to a website, sometimes hanging entirely, but once connected it functions perfectly—like when watching Netflix. Opening another tab or trying to search on Google causes delays or timeouts, while my Netflix session remains stable. I initially suspected DNS issues and changed to Cloudflare, but that didn’t help. Running an OpenVPN server resolved the issue entirely. Anyone know what’s going on? It might be related to Xfinity, but I need clarification. Also, testing with three different modems still results in the same problems.
You meant to explain what an OpenVPN server setup entails. Are you linked with a VPN service? If everything functions over the VPN but not directly, there might be several factors at play. If the issue appears on various devices, it likely isn’t a hardware problem. Possible causes include QoS settings or game acceleration interfering (disable them temporarily to test), advanced security configurations on your device or router (beyond a basic firewall), network congestion due to a large WiFi channel or high MTU size (1500 usually works with Xfinity, but if not, report it), or insufficient bandwidth—check speed tests and consider retesting. You could also try pinging from two different command prompt windows to see if latency changes, which might indicate bandwidth limitations.
Looks like a routing challenge on your part of the Comcast network. Currently, Comcast demanded a significant payment from Netflix, which led to Netflix establishing direct peering with Comcast’s infrastructure. That should resolve the issue. I’m a Comcast user myself, and Netflix, Hulu, and YouTube function properly for me. It seems the problem might be local—possibly due to maintenance or upgrades in the area, pushing all nodes to Docsis 3.1.
I checked the pings consistently, even when the issue persisted. I've tested various modems and routers, but the problem keeps occurring daily. I'm hoping to identify the cause and resolve it.
You're dealing with several modems and routers, right? That means problems might be affecting more than just one PC. (Sorry for the question.) If you're connecting multiple devices, try isolating to just one. This helps because I've noticed similar issues in homes—especially with network switches failing.