FortiGate Next Generation Firewall utilizes purpose-built security processors and threat intelligence security services from FortiGuard labs to deliver top-rated protection and high performance, including encrypted traffic.
This article explains how to change the speed settings on an interface in order to get the maximum bandwidth on interface.
Some time speed settings on the public interface do not match with the ISP modem settings. These settings can be manually adjusted by using the CLI only.
To check the current settings on the public interface
config system interface edit wan1 get
If using Vdom:
config vdom edit root (where root is the selected vdom) config system interface edit wan1 get
To change the speed settings to the desired requirement
config system interface edit wan1 set speed <interface_speed> (10full/10half/100full/100half/1000full/1000half) end
The interface speed:
auto — the default speed. The interface uses auto negotiation to determine the connection speed.
Change the speed only if the interface is connected to a device that does not support auto-negotiation. 10full — 10 Mbps, full duplex 10half — 10 Mbps, half duplex 100full — 100 Mbps, full duplex 100half — 100 Mbps, half duplex 1000full — 1000 Mbps, full duplex 1000half — 1000 Mbps, half duplex
Speed options vary for different models and interfaces. Enter a space and a “?” after the speed field to display a list of speeds available for the model and interface. The speed cannot be changed for switch interfaces.
Note that the XG2 interfaces on models FortiGate 3140B and FortiGate 3950B cannot be configured for 1000Mbps.
If using Vdom:
config vdom edit root (where root is the selected vdom) config system interface edit wan1 set speed <interface_speed> (10full/10half/100full/100half/1000full/1000half) end