Fortinet FIM-7920E, Manual, Page: 9 / 27

Changing the interface type and splitting the FIM-7920E C1 to C4 interfaces FIM-7920E interface module
Transceiver Description
FG-TRAN-QSFP+LR 40GE QSFP+ transceivers, long range.
Breakout cables available from Fortinet for the FIM-7920E C1 to C4 QSFP28 interfaces.
Breakout Description
FG-TRAN-QSFP-4XSFP 40GE QSFP+ Parallel Breakout Active Optical Cable with 1m length.
FG-TRAN-QSFP-4SFP-5 40G QSFP+ Parallel Breakout MPO to 4xLC connectors, 5m reach.
Changing the interface type and splitting the FIM-7920E C1 to C4 interfaces
By default, the FIM-7920E C1 to C4 interfaces are configured as 100GE QSFP28 interfaces. You can use the
following command to convert them to 40GE QSFP+ interfaces. Once converted, you can use the other
command below to split them into four 10GBASE-SR interfaces.
Changing the interface type
For example, to change the interface type of the C1 interface of the FIM-7920E in slot 1 to 40GE QSFP+ connect
to the CLI of your FortiGate-7000 system using the management IP and enter the following command:
config system global
set qsfp28-40g-port 1-C1
end
The FortiGate-7000 system reboots and when it starts up interface C1 of the FIM-7920E in slot 1 is operating as
a 40GE QSFP+ interface .
To change the interface type of the C3 and C4 ports of the FIM-7920E in slot 2 to 40GE QSFP+ enter the
following command:
config system global
set qsfp28-40g-port 2-C3 2-C4
end
The FortiGate-7000 system reboots and when it starts up interfaces C3 and C4 of the FIM-7920E in slot 2 are
operating as a 40GE QSFP+ interfaces.
Splitting the C1 to C4 interfaces
Each 40GE interface (C1 to C4) on the FIM-7920Es in slot 1 and slot 2 of a FortiGate-7000 system can be split
into 4 x 10GBE interfaces. You split these interfaces after the FIM-7920Es are installed in your FortiGate-7000
system and the system us up and running. You can split the interfaces of the FIM-7920Es in slot 1 and slot 2 at
the same time by entering a single CLI command. Splitting the interfaces requires a system reboot so Fortinet
recommends that you split multiple interfaces at the same time according to your requirements to avoid traffic
disruption.
For example, to split the C1 interface of the FIM-7920E in slot 1 (this interface is named 1-C1) and the C1 and C4
interfaces of the FIM-7920E in slot 2 (these interfaces are named 2-C1 and 2-C4) connect to the CLI of your
FortiGate-7000 system using the management IP and enter the following command:
9 FIM-7920E Interface Module Guide
Fortinet Technologies Inc.