Tip: Disk occupancy rate, CPU usage rate, memory usage rate, operating temperature, operating voltage, and other OID are obtained using the snmpget method by default. If you want to use the snmpwalk method to obtain the corresponding data of OID, you can write an aggregation function, such as avg[oid] indicating that the system will auto calculate the average value, max[oid] indicating that the maximum value will be auto calculated, min[oid] indicating that the minimum value will be auto calculated, sum[oid] indicating that the sum will be auto calculated, and count[oid] indicating the number of auto calculated values