D-Link DGS-3130-30TS L3 Stackable Managed switch, 24x GbE, 2x 10G RJ-45, 4x 10G SFP + The stackable L3 Gigabit Ethernet managed switch is designed to address the needs of corporate networks. The switch offers 24 Gigabit 10/100/1000M RJ-45 ports and six built-in 10G ports. Two metallic 10GBase-T RJ-45 ports and four two-speed 1G/10G SFP + ports allow flexible interface selection for HW stacking, uplink (connection to the backbone network) or for connecting servers. Switch power redundancy can be provided by the optional DPS-500A external power supply. The basic version of the DGS-3130 series switch software includes an advanced set of L2 functions as well as L3 functions such as 16 IP Interface, static IPv4/IPv6 routing, dynamic RIP v1/v2 routing, RIPng or VRRP for redundancy. The DGS-3130 switches offer comprehensive management options via a web interface, using standardized CLI commands via a serial console or Telnet, or using SNMP commands. D-Link Network Assistant (DNA) or NMP platform D-View7 (DV-700) are intended for central management. The DGS-3130 series switches support HW stacking for easy network management, flexibility and redundancy. A maximum of 9 switches can be connected to the stack, with stacking throughput up to 80Gb/s (4x 10G ports in Full Duplex). At the same time, when stacking, the final stacking cost (so-called Stacking Cost) of all switches in the stack must not be higher than 12, where each 30-port model (30TS, 30PS, 30S) has Stacking Cost = 1 and each 54-port model (54TS, 54PS , 54S) has Stacking Cost = 2. There can be up to nine 30-port models in the stack (Stacking Cost = 9x1 = 9), but max. Only six 54-port models (Stacking Cost = 6x2 = 12) or their combination, eg 5x 54-port model and 2x 30-port model (ie Stacking Cost = 5x2 + 2x1 = 12).