Using the Device Overview Dashboard

You use the Device Overview Dashboard to gain a high-level summary and detailed view of operational health of a single device for your chosen time period. When navigating directly to this dashboard, use the filter menus at the top to select a specific device by name. You can also navigate to this dashboard by clicking on a hyperlinked device name in one of the other dashboards, like the Network Performance Dashboard.

Select an interface from the Top 10 Interfaces with Highest Bandwidth Usage panel to navigate to the Interface Overview Dashboard for that interface.

The dashboard displays the following panels that provide both summary and detailed metrics about the selected device:

• A scorecard panel consisting of the following scorecards:

  • Interface Status

  • System Uptime

  • Users

  • Processes

  • Memory Utilization

  • Disk Utilization

• Device Details

• Average CPU Utilization (%)

• Average Memory Usage

• Device Location

• Top 10 Interfaces with Highest Bandwidth Usage

• Bandwidth Heatmap

Device Overview Scorecard Panel

These scorecards provide an overview of device health.

You can view the following scorecards at the top of the dashboard:

• Interface Status: Displays how many interfaces are up or down and shows the average availability for the selected period.

• System Uptime: Displays the number of days the device has been running since the last restart.

• Users: Shows the current and maximum number of authenticated users during the selected period.

• Processes: Displays the current and maximum number of running processes.

• Memory Utilization: Shows the average memory used, in percentage.

• Disk Utilization: Shows the average percentage of disk in use.

Note:

High uptime, often measured in years, signals device stability and reliability as well as a mature, stable network environment. However, long uptimes alone should not be your network’s primary goal. Devices proactively maintained and regularly patched, even if rebooted occasionally, are more secure and reliable than ones left running untouched for years.

Device Details

This summary panel provides key attributes and metadata for the selected device, such as:

• Hostname

• Device type

• Custom name (if set)

• Serial number

Average CPU Utilization (%)

This panel displays the average CPU usage for each processor over the selected time period. Hover over or select the chart to view detailed measurements at a given time.

Average Memory Usage

This panel displays both used and free memory over the selected time period, allowing you to easily track changes and trends. You can interact with the chart to view specific memory values at each timestamp, providing detailed insight into memory usage patterns throughout the time interval.

High memory utilization indicates a busy device consuming most of its available RAM. Sustained high usage (above 80%) could result in dropped connections, slow performance, or device crashes requiring a reboot.

Note:

Elevated memory use can result from:

• Heavy network traffic. High packet volumes require more memory for buffers and routing tables.

• Large routing tables. Core routers may need to store hundreds of thousands of routes.

• Multiple advanced services. Features like firewall, VPN, QoS, and IDS/IPS need significant memory for state tables, tunnels, policy tables, and inspection.

Device Location

This panel displays the geographic location of the device on a map if geolocation information is available.

Top 10 Interfaces with Highest Bandwidth Usage

This panel displays a table listing the interfaces with the highest average inbound and outbound bandwidth on the device. The data is organized under the following columns:

• Interface Name: The interface identifier on the device. This field is a clickable hyperlink that opens the Interface Overview Dashboard for that interface. See Using the Interface Overview Dashboard for more details.

• Average Inbound: Average inbound traffic rate into the device on this interface over the selected time window.

• Average Outbound: Average outbound traffic rate out of the device on this interface over the selected time window.

• Admin: Administrative status code of the interface (configured state). (1 = Up, 2 = Down, 3 = Test)

• Oper: Operational status code of the interface (actual runtime state). (1 = Up, 2 = Down, 3 = Test)

Bandwidth Heatmap

The heatmap in the panel shows all interfaces on the X-axis and bandwidth usage over time on the Y-axis. Brighter and redder colours represent higher utilization, making it easy to spot busy periods or potential bottlenecks. If Flow Analytics is enabled, use it to identify top app traffic and users on high-utilization interfaces.

Note:

To explore large tables on both pointer and touch devices, hover over or select and scroll. Charts are interactive; move the mouse or tap to view pop-ups that show precise measurement values.

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Title and Copyright Information

Network Performance Management Reporting Guide

G49449-01

Copyright © 2026, Oracle and/or its affiliates.