Rackmount switch switching ports 48 10 gigabit ethernet ports 4x sfp switch type standalone management managed layer 3 network standards vlan quality of services qos mld snooping igmp snooping auto negotiation multicast access control list acl energy efficient ethernet link layer discovery protocol lldp dhcp snooping weighted round robin wrr broadcast storm control unicast storm control link aggregation lag link aggregation control protocol lacp full