Fortigate Firewall MTU configuration
Fortigate Firewall MTU configuration: MTU(Maximum Transmission Unit): > Is the amount of data that can be encapsulated in an ethernet frame > Typical MTU on most of the device is 1500 > It is possible to change the MTU on any fortigate firewall's interface > MTU of 9000 corresponds to jumbo frame Command: +++++++++++++++++++++++++++++++++++ #config system interface edit "wan2" set vdom "root" set mtu-override enable set mtu 9000 next end +++++++++++++++++++++++++++++++++++ To verify the MTU settings: > diag netlink interface list <interface-name> +++++++++++++++++++++++++++++++++++ > In some devices changing the MTU value may cause a network outage or interface down/up for a fraction of time > In fortigate firewall with firmware 7.0.0, I did not see any ping drop while changing the MTU value YouTube Channel: https://youtu.be/XCTsyzZBl44