FortiGate-3950B and FortiGate-3951B — load balance mode
Adding one or more FMC-XG2 modules to your FortiGate-3950B allows you to enable load balance mode. This feature allows you increased flexibility in how you use the interfaces on the FortiGate unit. The FortiGate-3951B is similar to the FortiGate-3950B, except it trades one FMC slot for four FSM slots. The network interfaces available on each model are identical.
When enabled, traffic between any two interfaces (excluding management and console) is accelerated whether they are the six interfaces on the FortiGate-3950B itself, or on any installed FMC modules. Traffic is not limited to entering and leaving the FortiGate unit in specific interface groupings to benefit from NP4 and SP2 acceleration. You can use any pair of interfaces.
Security acceleration in this mode is limited, however. Only IPS scanning is accelerated in load balance mode.
Figure 142: The FortiGate-3950B in load balance mode
To enable this feature, issue this CLI command.
config system global
set sp-load-balance enable
end
The FortiGate unit will then restart.
To return to the default mode, issue this CLI command.
config system global
set sp-load-balance disable
end
