A Modern Multilayer Switching Solution for Enterprises   The 3Com® Switch S7900E family is the next generation of modern multilayer switches that meets the evolving needs of integrated service networks.   The Switch S7900E can be deployed in multiple network environments, such as the Enterprise LAN core, aggregation and wiring closet edge, as well as the convergence and edge of Metropolitan Area Networks (MANs). This high-end modular chassis switch has a high-speed passive backplane, supports load sharing and redundant management and fabrics for high availability, and delivers wirespeed transfers at Layers 2 and 3 for IPv4 and IPv6.     SWITCH S7910E SWITCH S7906E SWITCH S7906E-V SWITCH S7903E SWITCH S7902E CHASSIS SLOTS           Total slots 12 8 8 5 4 I/O slots PERFORMANCE 10 6 6 3 2 Switching Capacity 768 Gbps 768 Gbps 768 Gbps 480 Gbps 192 Gbps Backplane Capacity 2.4 Tbps 1.6 Tbps 1.0 Tbps 1.0 Tbps 400 Gbps IPv4 IPv6 packet forwarding rate TOTAL PORT CAPACITY 488 Mpps 488 Mpps 488 Mpps 274 Mpps 143 Mpps 10-Gigabit 24 16 16 10 4 Fiber Gigabit 480 288 288 144 96 Copper Gigabit 480 288 288 144 96 Fiber Fast Ethernet 480 288 288 144 96 PoE-capable yes yes yes yes no