Installation ManualH3C S7500 Series Ethernet Switches Chapter 1 Product Overview1-2Note:z Refer to H3C S7502 Ethernet Switch Installation Manual for detailed informationabout the S7502.z In the later chapters, only the S7503, S7506, and S7506R are involved.1.1.2 Introduction to Switching EnginesSwitching engines, also known as SRPUs, are the core of the S7500 series, andinclude the following models:z Salience III (LS81SRPG)z Salience III Plus (LS81SRPG1)z Salience III Edge (LS81SRPG3)An SRPU generally has the following functions:z L2 and L3 data forwarding between LPUsz Route calculationz LPU monitoringz Processing of monitoring signals of components such as the system power andfansSalience III series SRPUs provide a high packet forwarding rate and switching capacity.Each SRPU provides four 1000Base-X SFP ports (only for Salience III and Salience IIIEdge) and one hot-swappable CF card port. The CF card stores the log and hostversion to facilitate online software upgrade.1.2 Technical Specifications for SRPUsTable 1-1 Technical specifications for SRPUsItem Salience III Salience III Plus Salience III EdgeSwitching capacity 384 Gbps [1] 768 Gbps [1] 96 GbpsPacket forwardingrate 198 Mpps [1] 432 Mpps [1] 72 MppsNumber of VLANs 4 K 4 K 4 KMAC address tablesize 32 K[2] 32 K[2] 32 KIP address table size 64 K [3] 64 K[3] 64 K[1]: This is the switching capacity when load sharing is implemented by configuring twoSalience III/Salience III plus engines on the S7506R.