In recent weeks I've been getting increasingly frequent Internet outages which look to be due to my Virgin Superhub3 rebooting itself, for no obvious reason. I can see this is the cause, because when connectivity returns (after around 2-3mins), checking the Superhub admin portal always shows "uptime" of about 2 minutes.
I've checked all the connectors are firmly seated, and tried a different mains lead and different wall socket - none of this has helped. I don't see anything obviously related in the modem's network log, apart from the "LAN login Success" event from me logging in to check.
As it happens I have an unused identical Superhub 3 here, which was sent in error a couple of years ago in relation to a previous fault. Would it be possible to try putting this other Superhub into service ? Presumably it would need registered on the network or something ?
I attach pics of:
(1) Connection monitoring graph from my "firebrick" (similar to thinkbroadband.com graphs). Here, the red/purple "stalactites" show the frequent outage periods, which last 2-3 mins.
(2) Screenshot of Superhub3 Admin/Info page showing the uptime has reset right after one of the outages.