Weird networking issues

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Joined
22 Mar 2017
Posts
291
Location
UK
We have a Virgin Media Hub 3.0 and a 1 Gb 4-port switch.

Suddenly about 6pm tonight it seems the router works fine by wifi but none of the ethernet-connected devices (including devices connected to the switch which is attached directly to the router).

Is this a thing? How could a router spontaneously break on a Sunday evening? And is it possible to break in such a way? That all routing and DHCP works fine. Yet the only thing that doesn't is the wired ports?
 
Switch lights were flashing as expected. Rebooted both switch and Virgin Hub 3.0.

Called Virgin and ordered a new Hub 3.0. Day before it arrived magically started working again.
 
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