Re: Dual wifi connections in Bookworm

On 2024-11-28, Lawrence D'Oliveiro <ldo@nz.invalid> wrote:

No, as far as the wireless channel and the access point are concerned,
these are two separate clients.  That they are attached to the same host
does not matter, they will cooperate / share airtime.

>
Regardless of how you look at it, they are colliding with each other.

Yes, but CSMA/CA reduces that to a point where it works fine unless the
channel is heavily loaded.

Having two interfaces on the same channel cannot magically double its
bandwidth.

I never said that - of course they share the bandwidth, just like two
separate clients do.  Noone installs one separate access point for every
device they use (not only because you would run out of free channels quite
quick, even with 5/6GHz) - multiple devices connected to a single AP is a
standard, supported scenario. Even when one client does heavy up/downloads,
the others will notice a slowdown, but not the packet loss problems that
were the start of this thread.

And because both transmitters are so close to each other, that
aggravates the losses from frame collisions.

How? Being close to each other, they can easily "see" when the channel is
busy and will not step over each other's foot. Contrary, widely spaced clients
lead to the "hidden station" problem where two stations each "see" the
access point, but not each other, and start to transmit at the same time.

cu
Michael
--
Some people have no respect of age unless it is bottled.