I have one of these switches. Its switching capacity is rated as 48Gbps non-blocking, which I suppose is a "marketing trick" made of 24-port 1Gbps on full-duplex. If I understand correctly this means I can load all 24 ports and expect 1Gbps per port. Well, this is not the case.
How to find out the real switching capacity?
Edit: How to find out if the switch can sustain full load (48Gbps)?