In order to calculate the PPS capabilities of a device, the best way is using the throughput ratings on the spec sheets. This way, we can account for PPS with full DPI, and SPI only from actual test results.
The NSA 2400 supported UTM throughput is 150Mbps, i.e., the aggregate of bandwidth processing in both directions at the same time 150 Mbps = 150,000,000 bits =150,000,000/8 = 18,750,000 Bytes Default MTU size is 1500, then divide 18,750,000 by 1500 bytes 18,750,000/1500= 12,500 Packets per second So, the NSA 2400, with full DPI, can process 12,500 packets per second.
The NSA 2400 supported stateful Inspection throughput is 775 Mbps, i.e., the aggregate of bandwidth processing in both directions at the same time. 775 Mbps = 775,000,000 bits 775,000,000/8 = 96,875,000 bytes Default MTU size is 1500, then divide 96,875,000 by 1500 bytes 96,875,000/1500= 64,584 Packets per second So, the NSA 2400, with only stateful Inspection, can process 64,584 packets per second.