Poe switch rackmount switch switching ports 28 gigabit ethernet ports 26 x rj 45 2 x sfp switch type standalone management managed layer 3 network standards quality of services qos access control list acl address resolution protocol arp energy efficient ethernet igmp snooping link aggregation lag link layer discovery protocol lldp power over ethernet poe vlan backplane bandwidth 56 gbs packet forwarding rate 3869 interfaces 1x console rj 45 1x