Poe switch rackmount switch switching ports 24 gigabit ethernet ports 2 x sfp 24 x rj 45 switch type standalone management managed layer 3 network standards power over ethernet poe full duplex vlan spanning tree protocol stp link aggregation control protocol lacp flow control access control list acl link aggregation lag port mirroring quality of services qos broadcast storm control unicast storm control weighted round robin wrr energy efficient et