On Jun 06, 2023, Didier Kryn wrote:
> Le 06/06/2023 à 04:02, Dan Purgert via Dng a écrit :
> > On Jun 05, 2023, Steve Litt wrote:
> > > Dan Purgert via Dng said on Mon, 5 Jun 2023 09:44:57 -0400
> > >
> > >
> > > > Note that it is advisable to keep networks down to ABOUT 1000 hosts or
> > > > so (a /22), as network overhead can cause problems after that
> > > > (although, it also depends on how much actual traffic you need to
> > > > move).
> > > I didn't know this. If I had, let's say, 20,000 hosts, could I get
> > > around the problem you mention by using routers between networks of
> > > 1000 hosts per network?
> > Bear in mind I'm focusing somewhat on general "business grade" type
> > stuff that costs in the range of a few hundred to a few thousand dollars
> > (say 4 figures max), but ... Yep, that's pretty much how the general
> > internet works today.
> >
> > Taking 192.168.0.0/16 as an example; we could have one central router
> > talking to say 8 routers that each control a /19.
> >
> > In turn, these 8 intermediate routers each talk to 8 more routers with
> > the /22s for "client access".
> >
> > For the sake of discussion, the main router and the first-level
> > intermediates are 10.1.1.x, and the second layer for "client access" are
> > 172.16.x.y.
> >
> > SO Central Router (10.1.1.254) trying to get to 192.168.122.34 would see that it needs
> > to talk to 10.1.1.4 (as 122 is in the fourth grouping of 32 -->
> > 0,32,64,96)... and then 10.1.1.4 talks to 172.16.96.7 (since 120 is the
> > seventh grouping of 4 --> 96,100,104,108,112,116,120)
> >
>     Didn't you forget that all these sensors don't speak to each
> other, but they instead only speak with one single host. Given that,
> I'm not sure breaking down the traffic into many local loops would
> bring much improvement.

Well, Steve's scenario wasn't the original "sensors" one.

That being said, the only thing I saw was "sensors ... sending maybe a
handful of bytes each ... every N seconds". It really depends on how
the sensors are talking to the upstream device(s).
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