You need to allow ICMP requests on your router otherwise the graph will be constantly red.
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I was wondering if .... if the replacement hub is likely to solve the issue?
It might. But if I were running a betting shop I'd be giving 5 to 1 against. Because the Hub 3 is such a low cost, cheapskate affair (now approaching obsolescence) replacing one is a cheap, quick easy response by both VM support staff and even field technicians. But most of the time there's nothing wrong with the hub, it's the quality of the cable connection., but that usually needs more time and skill to diagnose and fix.
But I suppose we'd better wait and see.
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