Rackmount switch switching ports 20 10 gigabit ethernet ports 24x rj 45 4x sfp switch type stackable management managed layer 3 network standards flow control spanning tree protocol stp link aggregation lag port mirroring vlan mld snooping igmp snooping address resolution protocol arp weighted round robin wrr access control list acl broadcast storm control unicast storm control dhcp snooping full duplex loop detection link layer discovery protocol ll