# About the gadgets

### 1. Interface information

Displays the link status of the ports and the PoE power supply status.

- The "Port" icon display lets you check the link status of the ports, the PoE power supply status, and the bandwidth usage rate.

- When you move the mouse cursor over the "Port" icon, detailed port information is shown.

- Press the "LINK/ACT" button to display the link status. Press the "Power supply status" button to display the PoE power supply status. Press the "Bandwidth usage" button to display the bandwidth usage rate.

- The "Port" icon will display as follows, according to the link status, the PoE power supply status, and the bandwidth usage rate.

Link status

Icon | Explanation
--- | ---
| Link up (port speed 1000BASE-T)
| Link up (port speed 100BASE-TX)
| Link up (port speed 10BASE-T)
| Link down
| Error occurrence( Loop detection )

PoE supply

Icon | Explanation
--- | ---
| Does not supply power supply
| PoE is being supplied (supply Class0—​3)
| PoE is being supplied (supply Class4)
| Power supply stopped
| Error occurrence (PoE power supply stops abnormally)

Bandwidth usage:For a LAN port

Icon | Explanation
| Link up ( Bandwidth usage rate x : 95% ≤ x ≤ 100% )
| Link up ( Bandwidth usage rate x : 85% ≤ x < 95% )
| Link up ( Bandwidth usage rate x : 75% ≤ x < 85% )
| Link up ( Bandwidth usage rate x : 65% ≤ x < 75% )
| Link up ( Bandwidth usage rate x : 55% ≤ x < 65% )
| Link up ( Bandwidth usage rate x : 45% ≤ x < 55% )
| Link up ( Bandwidth usage rate x : 35% ≤ x < 45% )
| Link up ( Bandwidth usage rate x : 25% ≤ x < 35% )
| Link up ( Bandwidth usage rate x : 15% ≤ x < 25% )
| Link up ( Bandwidth usage rate x : 7.5% ≤ x < 15% )
| Link up ( Bandwidth usage rate x : 0% ≤ x < 7.5% )
| Link down

### 2. System information

The following information is displayed.

- Device name:

  - Display the device name of the switch.

- Firmware revision:

  - Firmware revision

- Serial number:

  - Serial number of the device

  - This is also shown by a label on the rear of the chassis.

- MAC address:

  - MAC address of the device

  - This is also shown by a label on the rear of the chassis.

- Currently-running firmware:

  - The currently started firmware is shown..

- Currently-running settings file:

  - The currently used CONFIG file is shown.

- System time:

  - Current device date and time

  - If the date and time are incorrect, set the date and time either in the Web GUI’s "Management" → "Device settings" page, or by using the clock set command or the ntpdate command.

- Startup time:

  - System startup date and time

- Startup reason:

  - Reason for startup

  - Start from power-off state, reload command, revision up, etc.

  - If reboot is detected as the startup reason, the background turns red, and a warning indication () occurs.

    - Check with the network administrator.

    - In the warning list, press the "Clear" button () to clear the warning indication.

- Fan speed :

  - Displays the speed of each fan.

- Internal chassis temperature :

  - Displays the temperature inside the chassis.

- PoE supply :

  - The display will show whether the PoE power supply is enabled.

- PoE supply power :

  - The current supply voltage and the maximum supplied voltage will be displayed.

### 3. Resource information

This page shows the CPU usage and memory usage.

- The current values and peak values of CPU usage and memory usage are shown.

- The number at the right of the meter is the current usage, and the number at the left is the peak value.

- When you press "Clear peak values," the previous peak values will be cleared.

  - Peak values are also cleared when you restart the device.

- When you move the mouse cursor to each meter, the peak value and the date and time at which the peak value was recorded are shown.

- If the CPU usage exceeds 80 % , a warning display () is shown.

  - Note the date and time at which the peak value was recorded, and from other gadgets, note the traffic and the log that were occurring during that time.

- If the memory usage exceeds 80 % , a warning display () is shown.

  - Note the date and time at which the peak value was recorded, and from other gadgets, note the traffic and the log that were occurring during that time.

### 4. SYSLOG

This shows the most recent SYSLOG.

- The most recent log is at the top.

- In the select menu you can change the number of lines that are displayed (default: 10 lines).

### 5. Traffic information

The physical interface traffic is displayed on a graph.
There are different gadgets for the transmission traffic and for the reception traffic.

- Press the "Interface selection" button () to display the “Interface selection” dialog box.

- Select the interface to display on the graph, from the “Interface selection” dialog box.

- The average traffic per hour for the interface is rendered on the graph.

- Up to 8 lines can be displayed on the graph using the colors blue, salmon pink, yellow, green, gray, sky blue, pink and purple for a total of 8 colors.

  - These colors are allocated in the order that they are rendered on the graph, from the newest interface numbers onwards.

- The Y-axis upper limit grows with the traffic, from a minimum of 10 [Mbps] to a maximum of 1000 [Mbps].

- Time, from the current time to 120 seconds ago (in the form hh:mm:ss), is shown on the horizontal axis.

- Point the mouse cursor above a line on the graph to show the interface information, date and traffic amount.

- A legend for the currently displayed graph is shown at the lowermost part of the gadget.

- Using the legend

  - Only the lines on the graph that are enabled using the check boxes in the legend will be displayed.

  - Deselecting the check boxes will hide the corresponding lines from the graph.

  - This is useful when multiple lines are overlapping or when you wish to temporarily monitor a specific interface only.

  - If the interface you are currently monitoring does not exist, the message “The currently monitored interface is not selected” will display.

- Refresh the screen to restore the selections on the legend to their defaults, as shown below.

  - Legend check boxes : All applied

- If the traffic exceeds 60%, a warning () will be displayed.

- If the traffic falls below 50%, the warning will be cancelled.

- When displaying a gadget in a separate window using the “Separate” button ()

  - The settings prior to being separated will be reflected in the settings for the interface currently being monitored.

  - The selections on the legend return to their defaults.

  - The settings for the interface selected in a separated window will be reflected in the dashboard gadget when the separated screen is closed.

- When directly inputting the URL for a separated window and displaying a gadget

  - The selections on the legend return to their defaults.

### 6. Resource information(Graph)

This shows the CPU usage and memory usage in graph format.

- The average usage ratio is rendered per hour for the monitored period.

- The CPU usage is shown on the graph using blue lines, and the memory usage is shown using salmon pink lines.

- The upper limit for the graph’s Y axis is 100 [%].

- Time, from the current time to 120 seconds ago (in the form hh:mm:ss), is shown on the horizontal axis.

- Point the mouse cursor above a line on the graph to show the monitored period, date and time and usage ratio.

- A legend for the currently displayed graph is shown at the lowermost part of the gadget.

- Using the legend

  - Only the lines on the graph that are enabled using the check boxes in the legend will be displayed.

  - Deselecting the check boxes will hide the corresponding lines from the graph.

- Refresh the screen to restore the selections on the legend to their defaults, as shown below.

  - Legend check boxes : All applied

- If the CPU usage exceeds 80%, a warning () will be displayed.

- If the CPU usage falls below 80%, the warning will be cancelled.

- If the memory usage exceeds 80%, a warning () will be displayed.

- If the memory usage falls below 80%, the warning will be cancelled.

- When displaying a gadget in a separate window using the “Separate” button ()

  - The selections on the legend return to their defaults.

- When directly inputting the URL for a separated window and displaying a gadget

  - The selections on the legend return to their defaults.

### 7. Power consumption information

A graph of the power consumption by the unit is displayed.

- Shows power consumption every second for the last 2 minutes.

- The graph will be automatically refreshed each second.

- Time, from the current time to 120 seconds ago (in the form hh:mm:ss), is shown on the horizontal axis.

- Moving the cursor over the graph shows the power consumption value for the given date and time.

- The following methods are recommended to suppress power consumption.

  - Slow down the link speed of ports with low bandwidth usage.

  - Use the scheduling functionality to shutdown unused ports or shut off PoE power supply to them at night or on closed days.

### 8. PoE power supply

Display the PoE power supply.

- The current/maximum power supply, the remaining available power supply, and the guard band setting values are displayed at the top of the meter.

- The current utilization rate is shown on the right side of the meter, with peak utilization at the top.

- The arrow at the bottom of the meter indicates the guard band threshold value. If the current power supply exceeds the guard band threshold value, no additional power can be supplied.

- When you move the mouse cursor to the meter, the peak value and the date and time at which the peak value was recorded are shown.

- You can clear the previous peak value from "Clear peak values".

  - Peak values are also cleared when you restart the device.

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