DescriptionThis article describes how to troubleshoot bandwidth issues and detect which host is consuming the most bandwidth.
ScopeFortiGate
SolutionIf you are using FortiOS 4.2 or higher
Go to
System > Dashboard > Usage and select the widget icon and select Per-IP bandwidth usage from the list:
The chart will show you which IPs are using the most bandwidth.
If you are using FortiOS 4.1 or lower with a FortiAnalyzer unit
To generate bandwidth reports, first ensure you have enabled logging on firewall policies by going to
Firewall > Policy and editing the policies, enable logging by enabling
Log allowed traffic.
Nn the FortiAnalyzer unit, go to
Report > Config > Layout > Create New and add charts as required. Typically, you will need
Traffic Volume by Direction, Top Services by Volume and
Top Sources by Volume.Go to
Report > Schedule and select
Create New. Use the layout you just created and select the devices you want to run the report on and select
OK. Schedule the report or run it on demand by selecting
Run Now on Schedule page.
If using FortiOS 4.1 or lower without a FortiAnalyzer unit
If you do not have a FortiAnalyzer unit, you may choose to sign up for Fortinet Management and Analysis services. You can find more info at:
http://www.fortinet.com/support/fortiguard_analysis_management.html
Please note that you still need to enable logging on the Firewall policies are mentioned in the previous section.
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