Installation ManualH3C S7500 Series Ethernet Switches Chapter 1 Product Overview1-1Chapter 1 Product Overview1.1 Introduction1.1.1 Introduction to S7500 Series Ethernet SwitchesH3C S7500 Series Ethernet Switches (hereinafter referred to as the S7500 series) aremodular, large-capacity L2/L3 Ethernet switches that support wire-speed forwarding.The S7500 series are designed for IP metropolitan area networks (MANs), largeenterprise networks, and campus networks.Together with Huawei MA5200 Ethernet Access Management Systems, H3CS3100/S3600/S5600/S9500 Series Ethernet Switches, and H3C series routers, theS7500 series can provide comprehensive networking solutions for MANs andenterprise networks.Figure 1-1 S7500 series in MANThe S7500 series support AC and DC power supply redundancy, and now include themodels S7502, S7503, S7506, and S7506R.z The S7502 provides one switching & routing processing unit (SRPU) slot and oneline processing unit (LPU) slot. Both the SRPU and LPU can provide high-densityservice ports.z The S7503 provides one SRPU slot and three LPU slots.z The S7506 provides one SRPU slot and six LPU slots.z The S7506R provides two SRPU slots for redundancy backup and six LPU slots.