I have Centurylink VDSL2 with 60down\5up connected to a Zyxel C3000Z . When it is working it works great, and speed test is showing good results. I've had a problem that about every 2-3 days, some devices on the network can no longer get HTTP/HTTPS traffic (other ports like ping are still working). It isn't the same devices every time either. Power cycle the modem seems to solve the problem.
I tried adding a separate router but it did not solve this problem - same thing occurs just like when I had everything connected directly. I find that resetting the C3000Z modem (not the downstream router) still fixes the problem.
Any suggestions what I can do to fix or at least troubleshoot this?
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