Hi,
Like Vince, I would suggest the cables have intermittent faults on them.
Hopefully the switches have a command line or web interface. When the
problem occurs, try to look at the speed of link that the switches
think they are using.
My guess is that one of them has dropped from 1000 Mbps to 100 Mbps.
Once you find out which cable link has dropped to 100 Mbps, you will
know which cable to replace.
Kind Regards
James
On Sun, 20 Jul 2025 at 11:06, rmluglist2--- via Hampshire
<hampshire@???> wrote:
>
> >Could the switch be overheating and dropping down to lower speeds to stop
> itself from melting?
>
> I've not tested that - will have a look but I doubt it.
>
>
> >Are all the cables in the study at least Cat5e, no Cat5 cables lurking in
> there?
>
> Almost certainly there will be some very old cabling in there - but it's the
> intermittent nature of it that's befuddling me!
>
> Cheers
> Rob
>
>
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