TP-Link T1700G-28TQ JetStream 24-Port Gigabit Stackable Smart Switch with 4x10GE SFP+ Slots L2+ IPv6 WEB/CLI True physical stacking supports up to 6 units and 40Gbps bi-directional bandwidth for high scalability and efficient redundancy 10G SFP+ ports for stacking and/or uplink, providing support for high-bandwidth applications for congestion relief and smooth data delivery L2+ feature, Static Routing help route internal traffic for more efficient use of network resources Advanced security features include IP-MAC-Port Binding, ACL, Port Security, DoS Defend, Storm Control, DHCP Snooping, 802.1X, and Radius Authentication IPv6 support provides dual IPv4/IPv6 stacking, MLD snooping, and IPv6 neighbor discovery WEB/CLI managed modes, SNMP, RMON, and Dual Image enhance management Affordable 10-Gigabit Switching Solution for Growing SMBs GIGABIT STACKABLE WITH 10G UPLINK Physical Stacking Fanless Design for Silent Operation Physical Stacking Up to 6 units Physical Stacking Up to 40Gbps bi-directional stacking bandwidth Ring Stacking for Link Redundancy Distributed Link Aggregation L2 and L2+ Features Static Routing Link Aggregation Control Protocol (LACP) 802.1Q/MAC/Protocol VLAN STP/RSTP/MSTP IGMP Snooping Security Strategies Port Security Access Control List (L2~L4 ACL) DHCP Snooping IP-MAC-Port Binding 802.1x and Radius Authentication SSL and SSH encryptions Strom Control Dos Defend Quality of Service 8 priority queues 802.1P/DSCP QoS Rate Limit Voice VLAN Management Web-based GUI Command Line Interface (through Telnet) SNMP v1/v2c/v3 RMON (1, 2, 3, 9 group) IPv6 Management Dual Image Software Features L2+ Static Routing Abundant L2 Features Robust Security Strategies Comprehensive QoS Features IPv6 Support Dual Image