Re: Mixing Airport (11mbps) and Airport Extreme (54mbps)

In article <invalid-952BB5.09373409042006@xxxxxxxxxxxxxxxxxxxxxxxx>,
Madwen <invalid@xxxxxxxxxx> wrote:

There's nothing wrong with my "interpretation". The Apple manual
*clearly* says that in 802.11b/g mode, each client computer will
transmit at its highest speed. "Highest speed" clearly means the
maximum transmission speed of which the computer is capable. Reading it
any other way requires a great deal of equivocation. What I don't
understand is why you would wish to equivocate. If Apple is wrong or
trying to mislead Airport users, then you should say so instead of
trying to blame it on my "interpretation".

Yes, it will transmit at its highest speed, but for how long and under
what conditions? You seem to think that any radio can transmit at any
time and achieve full data throughput without regard for any other
clients on the same network. In reality, substantial negotiation occurs
to insure that transmissions from multiple clients do not collide and
that a given client does not "hog" the available bandwidth. The net
result is that individual packets are transmitted at the "highest speed"
but overall net throughput is substantially less.

I don't think Apple is wrong or being deliberately misleading, nor do I
think they intended to offer a complete description of the 802.11
communication protocols in their discussion of how to set up an AirPort
wireless network.

As to your interpretation, I think it's incredibly naive to think that
any useful data transmission scheme can sustain a data rate equal to the
raw bandwidth of the channel.

Whether you agree or not, the facts have been presented and the readers
can judge for themselves how the mixing of 802.11 a/g traffic on a
network will affect the overall capacity of the network.

I'm finished with this discussion.

--
Tom Stiller

PGP fingerprint = 5108 DDB2 9761 EDE5 E7E3
7BDA 71ED 6496 99C0 C7CF
.

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