Changing The Interface Type And Splitting The Fim-7920E C1 To C4 Interfaces - Fortinet FortiGate-7060E Handbook

FIM-7920E interface module
FIM-7920E front panel
The FIM-7920E includes the following hardware features:
Four front panel 100GigE QSFP28 fabric channel interfaces (C1 to C4). These interfaces are connected to
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100Gbps networks to distribute sessions to the FPM processor modules installed in chassis slots 3 and up. Using a
100GBASE-SR4 QSFP28 or 40GBASE-SR4 QSFP+ transceiver, each QSFP28 interface can also be split into four
10GBASE-SR interfaces. These interfaces also support creating link aggregation groups (LAGs) that can include
interfaces from both FIM-7920Es.
Two front panel 10GigE SFP+ interfaces (M1 and M2) that connect to the base backplane channel. These
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interfaces are used for heartbeat, session sync, and management communication between FIM-7920Es in different
chassis. These interfaces can also be configured to operate as Gigabit Ethernet interfaces using SFP transceivers,
but should not normally be changed. If you use switches to connect these interfaces, the switch ports should be
able to accept packets with a maximum frame size of at least 1526. The M1 and M2 interfaces need to be on
different broadcast domains. If M1 and M2 are connected to the same switch, Q-in-Q must be enabled on the
switch.
Four 10/100/1000BASE-T out of band management Ethernet interfaces (MGMT1 to MGMT4).
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One 80Gbps fabric backplane channel for traffic distribution with each FPM module installed in the same chassis as
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the FIM-7920E.
One 1Gbps base backplane channel for base backplane with each FPM module installed in the same chassis as the
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FIM-7920E.
One 40Gbps fabric backplane channel for fabric backplane communication with the other FIM-7920E in the chassis.
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One 1Gbps base backplane channel for base backplane communication with the other FIM-7920E in the chassis.
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On-board DP2 processors and an integrated switch fabric to provide high-capacity session-aware load balancing.
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One front panel USB port.
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Power button.
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NMI switch (for troubleshooting as recommended by Fortinet Support).
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Mounting hardware.
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LED status indicators.
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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.
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FIM-7904E interface module
FortiGate-7000
Fortinet Technologies Inc.