Services Processing Units Layer

The tests mapped to this layer monitor the CPU utilization of each SPU available in the Juniper SRX, spu memory utilization, the NAT(Network Address Translation) configurations to ensure rules for each type exist and rules are being executed on incoming traffic, and also monitor the data and the packets that flow through the policer to find out the packets or data that have been discarded due to congestion and etc.

Figure 1 : The tests mapped to the Services Processing Units layer