"
notya...@gmail.com" <
notya...@gmail.com> wrote in message
news:4cc49038-bc6a-471e...@googlegroups.com...
>> You may need two UPSes: one for the fibre "modem" and another for the
>> router
>> and maybe the phone, if the fibre termination point (and its modem) has
>> to
>> be placed somewhere other than the point where the router and the phone
>> base
>> station are.
>
> We had a three minute power cut a year ago. The only one since I moved to
> the area in 1975. I didn't actually notice initially because I was on the
> mobile at the time, although I did hear an alarm sounding a street away,
> and then ours when power was restored because the battery had failed.
We went through a phase of getting multiple power-cuts in the day (there was
one evening where the power was going off every 30 seconds or so). Each time
it was only for a second, but that's long enough to reboot anything with a
computer in it.
That was due to appallingly bad maintenance and clearance of overhanging
trees that were touching the high-voltage lines to the village, tripping the
circuit-breakers which then re-made the connection using either the same or
an alternative HV feed.
We played merry hell with the electricity supplier. We had very little
feedback about it, but at least we logged the complaints and the problem
went away so the sheer weight of numbers must have triggered the people to
clear the lines.
It happened again last year, a few weeks after a planned power cut to allow
work to be done clearing overhanging trees, and this time a senior engineer
came out and investigated. He went away and within a couple of hours he'd
located a branch that had probably been held out of the way by other
branches, and when those other ones were cleared, the remaining one
eventually sprang into the wrong position. He managed to get it fixed
somehow without even needing to turn the power off: he warned us that the
power would probably go off but it never did. Since then (touch wood - eg
touch overhanging branch!) the power has been fine.
It was a pain when the power went off like that because it meant my main PC
would reboot (and it takes about 10 minutes for the CPU usage to settle back
down to normal after the flurry of auto-starting everything), the router
would reboot (sometimes taking a while to re-establish a VDSL connection)
and I'd have to go round rebooting each of our Velop mesh-network nodes in
the correct order because if they all start at the same time (after a power
cut) some of them sit there indefinitely trying to reconnect. The problem
with the Velop is that it uses fast-but-shorter-range 5 GHz for the comms
between all the remote nodes and the primary node that is connected by
Ethernet to the router, but we need 2.4 GHz as well for some older devices
that don't speak 5 GHz. If you position nodes just at the limiting point of
5 GHz comms, they overlap for 2.4 GHz so there is a problem with them
finding vacant channels at that frequency and they sit there indefinitely.
It would be nice if you could enable 2.4 GHz on a per-node rather than
whole-LAN basis, so we only enable it for the node that serves our old
security cameras and for the nodes that face the garden where we might want
slower but longer-range coverage for occasional web browsing in the garden.
As long as the nodes are started in sequence (primary node than all the
child nodes that talk to it or to each other) then everything is fine.
We could have positioned the nodes further apart and connected them to the
primary by Ethernet, but that would be a very big job routing cable in the
loft and getting it into the relevant rooms without making a mess of the
ceiling and having cables running down the walls.