Rackmount switch poe switch switching ports 24 gigabit ethernet ports 26 x rj 45 2 x sfp switch type stackable management managed layer 2 network standards full duplex auto negotiation address resolution protocol arp bootp support vlan igmp snooping syslog broadcast storm control unicast storm control spanning tree protocol stp dhcp snooping access control list acl quality of services qos mld snooping link layer discovery protocol lldp lldp support l