Char Jackson wrote:
On Sun, 22 May 2016 04:06:18 -0400, Paul wrote:

I'm not a networking expert like Char, so maybe
he can propose the simplest re-jigging of the
boxen to achieve the isolation.

I already suggested an easy way to achieve what he wanted to do, but so far
he didn't pick up on it.


I'm not 100% positive this network is physically set
up as well as it could be. That's why I'm "relentless"
with the request for a network diagram. Presumably
isolation is easier with some setups than with others.

There are two routers in the diagram. Not sure if there
is one switch or two. It might be router - switch - router
for example.

*******

When I do my wiring here, one room has all the networking
equipment, and wires (if they are ever necessary) radiate
away from that room. Then I can select whatever cascade
of boxen I want. For example, if I run the laptop in
the kitchen, I run a wire up the hallway to the kitchen
as a temporary solution. The laptop has Wifi, but no other
gear in the house has Wifi, so doing it with Wifi is not
an option. If some day, a network box happens to have Wifi,
it might happen (an actual Wifi connection).

My modem/router, is "entirely floating" in terms of electrical
ground (which is why it happens to be so noise sensitive
to thru-noise on the AC power). If it had Wifi inside the
box, I don't know what that would do to antenna efficiency.
For example, if that box had a TTL level serial port, I'd
have to use an optoisolator to connect to the port, so the
(lack of) ground doesn't get upset.

Paul