Technical Tip: Configure Jumbo Frame in FortiSwitch

[fortega]

Description

This article describes how to configure a FortiSwitch port to allow Jumbo Frames.

Scope

This configuration is useful for all the FortiSwitchs.

Solution

Into the CLI run the following commands:

# config switch physical-port
    edit port1
        set max-frame-size 9000       <--- This value could be set into the following range: 68 to 16360
end 

Update to the existing article:

If there is entry-level FortiSwitch which does not allow setting MTU (max-frame-size) on a per port basis, it is possible tp do as follows:

# config switch global

    set max-frame-size 1500

end

Note.

For smaller size models in E and F series, the max-frame-size command is under the config switch global command.