Device Monitor Tool

Device Monitor utility of OpUtils software monitors the CPU utilization, memory utilization, buffer miss rate, and buffer failures of a Cisco device.

To monitor the load and utilization of a Cisco Device

1. Click the Tools tab.

2. Choose Device Explorer available under the CISCO Tools category.

3. Select the Device Monitor from the tree.

4. Enter the Device Name or its IP Address.
   Note: Ensure the device specified is a CISCO device.

5. Enter the SNMP Community String of the device.

6. To configure SNMP properties click Settings located at the top right corner or click Admin -> Settings. For details read the Configuring SNMP section.

7. To configure Graph settings such as the polling interval and number of plots, follow the same steps as given above. For more read the section Configuring Graphs.

8. Click the Show button.

9. The following details about the device are displayed in graph.

• CPU Utilization : Displays the CPU load of the device. To view the history of CPU Utilization check the table displayed below the graph.
  Note: High percentages indicate high CPU utilization.
   

• Memory Utilization : Displays the memory utilization of the device. Every line in the graph represents the utilization of a memory pool.
  Note: If the Input queue drops, it is an indication of high percentage CPU Utilization.
   

• Buffer Miss Rate : Displays the number of times a buffer request failed, because there were no buffers available in the free list, or there were fewer than "min" buffers in the free list.
   

• Buffer Failures : Displays the number of failures to grant a buffer to a requester under interrupt time (remember that the router can create new buffers at process switching level, so "failure" does not occur unless there is "no memory"). The number of "failures" represents the number of packets that have been dropped due to buffer shortage.

See Also