Several DGS-3627 switches may be physically stacked,  using low-cost CX4 10 Gigabit copper modules. In this configuration,  one or two 10-Gigabit uplinks may be created,  depending on whether the linear or fault-tolerant ring stacking 1 is implemented. Up to 12 switches can be stacked in this way. Using the low-cost coaxial cable as the medium to stack switches together provides not only high-bandwidth stacking but also the flexibility to add 10-Gigabit uplinks strictly as needed. The three open slots can also be used for optional 10-Gigabit XFP fiber uplinks to servers or a backbone connection. With D-Link Single IP Management (SIM) support,  you can easily add up to 32 switch units -regardless of the model- in a virtual stack in addition to your physical stack. Multiple switches can be configured,  monitored & maintained from any workstation running a Web browser via one single IP address. The stack is managed as a single object,  as all stacked units are identified by a single IP address. A simple yet powerful web-based interface means that you can perform most management & configuration tasks. A complete set of security features is provided,  which 
 Includes:: L2/L3/L4 multi-layer Access Control Lists (ACLs) & 802.1X user authentication via TACACS+ & RADIUS servers. The switch also offers suppression capabilities & Layer 3 IPv 4/v 6 static routing to increase network performance & security. In addition,  when implemented in conjunction with a D-Link Net Defend firewall,  this switch as a st&-alone or in a stack,  is able to automatically quarantine any host displaying abnormal behaviour. Finally,  D-Links Zone Defense,  provides proactive network security by preventing viruses from spreading through the network & thwarting harmful network attacks. The DGS-3627 switch provides VLAN support including GARP/GVRP & 802.1Q to enhance network security & performance. The switch implements a robust set of multi-layer (L2,  L3,  L4) Qo S/ Co S features to ensure that cr