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48PT L2 10/100 ETH W/ POE SWCH W/ 4 MINI-GBIC The SecureStack B2 switch family delivers advanced Layer 2+ switching in a single stack with up to 360-gigabit ports or 384 10/100 ports with 32 gigabit uplinks. Reliability and availability is assured with support for Closed Loop Stacking, redundant uplink connections, redundant power options and redundant stack management. An optional policy license will be made available approximately six months after initial shipments that will allow SecureStack B2 switches to participate in Secure Networks at the network edge. SecureStack B2 switches incorporate integrated stacking ports that support up to 20 Gbps of bi-directional bandwidth between any two adjacent switches for a total of 160 Gbps of stacking bandwidth. No additional stack module is required to stack the switches. Each switch has a 160 Gbps switch fabric with 40 Gbps per switch dedicated to stacking. In an eight-switch stack, 320 Gbps of switching bandwidth is dedicated to stacking. A single stack can be comprised of any combination of SecureStack B2 switches allowing a mixture of high-density 10/100, 10/100/1000 and/or Power-over-Ethernet ports to be linked to the network core via copper, multimode fiber and/or single-mode fiber Gigabit. Closed Loop Stacking can be implemented, which assures that a single switch or cable connection failure in the stack will not impact the overall stack operation. Stack switch units can be added to or removed from the stack with minimal packet interruption. Up to eight SecureStack B2 switches can be supported in a stack with a single IP address for complete stack management. Redundant stack management is supported by assigning a primary and secondary stack manager.