FortiGate-5144C Chassis
Fortinet Technologies Inc.
FortiGate-5144C shelf managers
The FortiGate-5144C chassis includes one or two redundant hot-swappable shelf managers, located in the dedicated
shelf manager slots at the bottom of the front panel. The
primary
shelf manager is installed on the left the
secondary
shelf manager (if present) is installed on the right. The secondary shelf manager is optional.
FortiGate-5144C shelf manager front panel
Ethernet
Interface
RS-232
Serial
Out of Service (Red),
Active (Green),
and Hot Swap (Blue) LEDs
Hot Swap
Button
Reset
Button
Alarm Cut Off
Button
Backplane
Ethernet Link LEDs
Retention
Screw
Fan Tray
LEDs
Telco Alarm
Interface
Retention
Screw
Critical Alarm (Red)
Major Alarm (Red)
Minor Alarm (Amber)
Power OK (Green)
Fortinet ships the FortiGate-5144C chassis with the primary shelf manager installed. You can purchase a secondary
shelf manager for redundancy.
If your chassis has two shelf managers, they support redundant operation with automatic switchover. If both shelf
managers are operating normally, one acts as the
active
shelf manager and the other as the
backup
. You can tell
which shelf manager is active by the state of the shelf manager front panel ACT(Active) LED. This LED is solid green for
the active shelf manager and flashing green for the backup shelf manager.
The active shelf manager performs all shelf manager functions. The shelf managers monitor each other and if the active
shelf manager stops communicating (for example because it has failed or is restarting) the backup shelf manager
becomes the active shelf manager. When the failed or restarting former active shelf manager comes back up it will
detect that the other shelf manager is active and become the backup shelf manager. Also, if one shelf manager fails or
is removed the other will operate independently as the active shelf manager and the chassis will continue to function
normally.
The active Shelf Manager communicates with Intelligent Platform Management Controllers (IPMCs) in the chassis,
each of which is responsible for local management of one or more Field Replaceable Units (FRUs), such as boards, fan
trays or power entry modules. Management communication within a chassis occurs primarily over the Intelligent
Platform Management Bus (IPMB), which is implemented using radial bus technology.
The active shelf manager controls chassis power allocation, monitors chassis operating parameters, monitors and
controls chassis cooling, and generates alarms if the chassis encounters problems. The active shelf manager also
displays alarms and includes a telco alarm interface. All FortiGate-5000 boards installed in the chassis communicate
with the active Shelf Manager through the IPMCs.
The shelf managers are hot swappable. You remove a shelf manager by pressing and holding the hot swap button. The
hot swap LED starts blinking blue. When the hot swap LED turns solid blue you can loosen both retention screws and
remove the shelf manager from the chassis.
FortiGate-5144C 6.2.3 Chassis Guide
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