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XG 310 problem - YouTube buffering, poor peformance HD streaming

Russell Harris

Hello,

I am trying to figure out if I have a configuration problem that is causing YouTube buffering when users are trying to watch at HD resolutions. I am unsure if the issue is actually the XG firewall or possibly might be related to our ISP, AT&T. However, I'm going to assume firewall for now as I have no reason to suspect the ISP. First off, I'm still learning my XG 310 so I might not be understanding of certain features.

The problem: users are seeing erratic performance when viewing YouTube content especially when in HD mode or 4K. Buffering, stalled playback, etc. When checking the firewall during these times, we are nowhere near our bandwidth limits, plus CPU (4-6%) and memory usage (28-34%) are all low. The frustrating thing is that sometimes the videos will playback with no issue at all. Perfect. Other times the problems. Conversely, when comparing against say Netflix, we have no issue at all in playing back through that service.

I have created a Web filtering exception with the following URL matches:

Matching URLs:
^[A-Za-z0-9.-]*\.ggpht\.com\.?/
^[A-Za-z0-9.-]*\.googlevideo\.com\.?/
^[A-Za-z0-9.-]*\.youtube\.com\.?/
^[A-Za-z0-9.-]*\.ytimg\.com\.?/
 
I am bypassing all scanning features: HTTPS Decryption, Malware Scanning, and Policy Checks. We do not have the Sandstorm feature.
 
 
At this point I am stumped on what I need to do next or what is lacking. I have tried to use logging to narrow down my search but I'm not sure how/what I should be looking for or logging exactly. I was thinking maybe the web proxy cache might be related? But other than the 'Restart' button, I'm not sure what I can control on that feature.
 
So any advice or suggestion is much appreciated. Let me know if you need other/different information.
Thanks!
RH


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