The Central Processing Unit (CPU) is used to efficiently route packets through the network. Memory is used to store important routing information such as routing tables. Memory also stores configurations and firmware. Resource utilization displays the operating frequency and usage of the CPU and memory. The information may be useful if the efficiency of the network is poor. Resource utilization can be used to diagnose issues in a network. If the CPU or memory is under a heavy load, there could be an issue in the network.