Rackmount switch switching ports 10 10 gigabit ethernet ports 8x rj 45 2x sfp switch type standalone management managed layer 2 network standards vlan igmp snooping mld snooping link layer discovery protocol lldp spanning tree protocol stp flow control port mirroring link aggregation lag loop detection quality of services qos weighted round robin wrr broadcast storm control unicast storm control multicast address resolution protocol arp energy effic