On Sun, 7 Oct 2018 07:39:43 +1100 Cameron Simpson <cs(a)cskk.id.au> wrote:
On 06Oct2018 10:30, Ed Greshko <ed.greshko(a)greshko.com> wrote:
>On 10/6/18 8:38 AM, Ranjan Maitra wrote:
>> My monthly quota is 400GB. However, do I need to go all through the network? At
the very least, should I not be able to go through the router and back without actually
using the network?
>
>They are on the same local network?
>
>Yes, the data will not leave the local network and add to your quota.
>
>To make double sure of that just use "ip addr show" on both systems.
I'm guessing they'll
>have addresses
>such as "192.168.1.X".
What Ed said.
In case it isn't clear, your "quota" is presumably your monthly data quota
with
you ISP. That applies _only_ to data sent/received via the ISP i.e. the network
_outside_ your home.
Your ISP never sees anything internal.
Your home network probably looks like this:
INTERNET--modem--switch--laptop
Often the switch is part of the modem rather than a distinct box, and often
there's wifi on the modem too.
Only traffic to/from the internet counts towards your quota.
So, keeping all the traffic on your internal network, we ignore the internet
and the modem:
switch--laptop
With both your laptops:
laptop--switch--laptop
or the "crossover cable" scenario:
laptop--laptop
In both these situations your laptops should be on the same IP network, and
traffic will remain local.
Thanks very much to everyone for the help and the clarifications. I will go the
laptop--switch--laptop route then.
Best wishes,
Ranjan