The Catalyst 4840G is a fixed-configuration SLB switch with 40 RJ-45 10/100 ports and two Gigabit Ethernet uplink ports utilizing modular GBIC interfaces. The switch is ideal for deployment in ISP, non-stop e-commerce, and enterprise sites that require wire-speed SLB. The 4840G SLB switch provides a compact solution for designs that do not require the high port densities offered by the Catalyst 6000 family of switches. With the Catalyst 4840, Catalyst 6000 and the LocalDirector appliance, Cisco offers a complete line of SLB products to meet the requirements of the smallest enterprise to the largest ISP.The Catalyst 4840G delivers the highest performance and port density in the smallest space. With only a 2-RU (1.75 inches high) chassis, the 4840G provides 40 10/100 ports and two-gigabit Ethernet ports. It is capable of switching traffic simultaneously through all ports at wire speed. The architecture consists of a 22-Gpbs non-blocking switch fabric, multiple high-performance Reduced Instruction Set Computer (RISC) processors for routing intelligence and advanced software features, and dedicated per-port ASICs for wire-speed performance. The Catalyst 4840G is housed in a 2RU chassis and can be provisioned with an optional external redundant power supply. It supports a 22-Gbps shared-memory, fully non-blocking switch fabric, high-performance RISC processor that provides the SLB and routing intelligence, and individual port-based ASICs for wire-speed switching. The switch fabric is capable of supporting all 40 10/100 ports and two-gigabit uplinks simultaneously at wire speed. The Catalyst 4840G provides an aggregate throughput of more than 9 million packets per second (pps) for SLB and L-3 switching. While supporting a rich set of SLB algorithms and features with all the common L-3 routing protocols, the Catalyst 4840 also supports both dispatch and directed SLB modes at wire -speed, making it a truly flexible Web-hosting switch.