I help manage the network for a small elementary school and at random points throughout the day they have network problems. Some days there are no issues and some days it happens 3-4 times. It generally solves itself with some time or we can reboot the cable modem and the problem goes away immediately. The cable modem has been replaced several times so I don't think it's a problem there.
I think the real problem might be lack of upstream bandwidth. We have a 300/30 connection and my guess is that at some point a lot of iPads start backing up or something and they are consuming the full upstream bandwidth. This causes all of the other connections in the building to stutter and fail, at least until the upstream traffic abates or the modem is rebooted (which kills the upstream traffic).
Does this sound reasonable? We're running OPNSense as a firewall and I was thinking that throttling the upstream bandwidth might help. What do you think?
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