D-Link''s xStack Series is a set of "Next Generation" high performance stackable switches that deliver high scalability, wire-speed Gigabit performance, high availability, integrated 10-Gigabit stacking, redundant power option, and support for stacking in a "ring" or "star" topology (requires DGS-3324SRi as stacking master). The xStack DXS-3350SR provides 48 built-in copper Gigabit ports, including (4) Combo SFP ports supporting either copper links or SFP modules for easy, flexible connection to fiber-based Gigabit media. In a ring stack it can provide up to 384 Gigabit ports, up to 40Gbps of stacking bandwidth per switch, and a switching capacity of up to 176Gbps per unit. It also stacks with the other xStack Series switches including the DGS-3324SR, DGS-3324SRi, and DXS-3326GSR to provide unprecedented flexibility in a switch stack environment. The xStack DXS-3350SR in a ring stacking topology supports "Shortest-Path, Fail-Safe" switching which improves resiliency, uptime and network efficiency. It also supports an optional Redundant Power Supply (DPS-500) and includes support for 802.3ad Link Aggregation, 802.1d Spanning Tree, 802.1w Rapid Spanning Tree, and 802.1s Multiple Spanning Tree for increased network reliability and availability. An extensive set of network management features is supported including console CLI, telnet, Web, SNMPv1/v2/v3, RMON, TFTP, Port Mirroring, BootP, and DHCP. The switch can also be easily managed using D-Link''s SIM (Single IP Management) Clustering technology. It also supports a variety of advanced traffic management options including 802.1x, Bandwidth Control, Broadcast Rate Limiting, and support for IGMP Snooping v1/v2/v3. The DXS-3350SR supports a robust and consistent set of QOS/CoS, VLAN, and security features. It provides 8 priority queues for 802.1p/TOS/DiffServ, with classification and marking based on MAC SA/DA, IP SA/DA, and/or TCP/UDP port numbers. Layer 3 dynamic routing protocols include RIPv1/v2, OSPFv2, PIM-DM/SM, DVMRP, and VRRP. Security features include 802.1x (Port-based Authentication), 802.1x (MAC-based Authentication), and Access Control Lists (ACL) based on MAC address, IP address, and/or TCP/UDP port numbers. It also provides extensive support for GARP/GVRP, 802.1q, 802.1v IPv6 VLAN, and port-based VLANs for up to 255 static groups per device.