Hello,
I am using an UTM 330 in our school which has a 100Mbps up/down Fiber link from our ISP, Just recently we have added 250 chromebooks in our environment which consisted of 150 chromebooks around 150 laptops 100 or so desktops, Users are now complaining of random slow internet speeds. When this is occurring a speed test indicates about 40-50 up down, I have enabled QOS on the wireless vlans the chromebooks are on in an effort to keep them from using all the bandwidth this does not seem to be helping. The QOS does seem to be working from the network usage logs. I have also attempted to change DNS to google and opendns this did not seem to help either. When they are having the issue I see a spike in the traffic up to 80 or 90 Mbps for a few minutes the it calms down again. I am trying to determine if I need to increase my ISP connection or if I might need a bigger UTM, the UTM does not seem to be getting bogged down from what I see in the cpu memory logs. I turned off IPS to see if this might help but it has not. Just trying to get some others advice on this situation. I am updated to the newest release.
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