Rackmount switch switching ports 28 gigabit ethernet ports 24 x rj 45 4 x sfp switch type stackable management managed layer 2 network standards quality of services qos igmp snooping link aggregation control protocol lacp spanning tree protocol stp loop detection flow control backplane bandwidth 128 gbs packet forwarding rate 952 jumbo frame size 10 240 bytes mac address 32 k buffer 16 384 kbit stacking bandwidth 20 gbps mode store and forward