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IMPORTANT
SNS 3.x versions have reached End of Maintenance since July 1st, 2024.
We recommend that you update your SNS firewalls to a version with maintenance to guarantee the protection of your infrastructure.

# QoS

## "Real time" tab

For each QoS queue selected in the Configuration > Monitoring configuration module, this module shows bandwidth use (incoming, outgoing) in the form of graphs.

### Possible operations

Collapse | The button allows all graphs on the page to be collapsed at once.
Expand | The button allows all graphs on the page to be expanded at once.
Add a column | This button makes it possible to increase the number of columns to be displayed for curves and other information. Therefore, information will be grouped in the same column for each active queue.
Remove a column | This button makes it possible to reduce the number of columns to be displayed for curves and other information.
Go to QoS configuration | This link makes it possible to go directly to the QoS configuration module (Configuration > Security policy > Quality of Service).
Go to monitoring configuration | This link allows going directly to the configuration module of QoS queues to be monitored.

### Interactive features

- Clicking on an indicator listed in the legend allows hiding/showing the corresponding data on the graph,
- Scrolling over a curve with a mouse will display the value of the indicator and corresponding time in a tooltip.

## “History” tab

This tab sets out history graphs showing bandwidth use for each monitored QoS queue.

### Possible operations

Time scale | This field allows selecting the time scale: last hour, views by day, last 7 days and last 30 days. The last hour is calculated from the minute before the current minute. The view by day covers the whole day, except for the current day in which data run up to the previous minute. The last 7 and 30 days refer to the period that has ended the day before at midnight. The button allows the displayed data to be refreshed.
Display the | In the case of a view by day, this field offers a calendar allowing you to select the date.
Collapse | The button allows all graphs on the page to be collapsed at once.
Expand | The button allows all graphs on the page to be expanded at once.
Add a column | This button makes it possible to increase the number of columns to be displayed for curves and other information. Therefore, information will be grouped in the same column for each active queue.
Remove a column | This button makes it possible to reduce the number of columns to be displayed for curves and other information.

### Interactive features

- Clicking on an indicator listed in the legend allows hiding/showing the corresponding data on the graph,
- Scrolling over a curve with a mouse will display the value of the indicator and corresponding time in a tooltip.
- Clicking on the button to the right of each graph will prepare graph data for printing. Comments can be added before you confirm printing (Print button).