If I have a 24-port gigabit switch with no uplink, and the odd-numbered downlink clients are transferring data to the even-numbered downlink clients, will I theoretically have (12 x 1 gigabit) communication channels, or (1 gigabit / 12) communication between each pair?
What features would a switch need to have to achieve the 12x1 performance if it doesn't already do so?
Update: From this closed ServerFault question I've learned that to calculate the required backplane capacity I would need to calculate 24*1 Gbs or 24 GBs capacity. For theoretical maximum, it would be 24*2 Gbs = 48 Gbs. If I'm searching for a switch, what marketing terms should I look for to avoid purchasing an under-capacity switch?
Update: The positive marketing terms I've found are "non-blocking", "no output contention", "100% throughput", and "wire speed" (plus checking the backplane capacity).