Technical Tip: How to check interface bandwidth utilization from GUI
Description
Solution
Add an interface widget that makes it possible to check/monitor bandwidth utilization.
From GUI:
- Login to the FortiGate.
- Go to Dashboard -> Main/status.

- Check for the setting icon at the bottom, select the icon, and select 'Add Widget'.

- Go to 'Monitor', select 'Interface bandwidth' and select the interface.







Note:
Inbound traffic refers to data coming into the interface (from the Internet to the interface), while outbound traffic refers to data leaving the interface (from the internal network to the Internet).
The interface bandwidth represents the total amount of data being transmitted and received on the interface at a given moment.
To check which source or destination over this specific interface is using the top bandwidth can be checked by follow this method:
FortiView Source Interfaces and FortiView Destination Interfaces dashboards can also be added to monitor usage of interfaces.

In case it is desired to see how many interfaces are being monitored, do that from the CLI with the following command:
config global
(global) # show full-configuration | grep -c "monitor-bandwidth enable"
Related article:
Technical Tip: Monitor bandwidth usage per source
