Alaxala AX2200S Series Configuration Manual page 35

(a) Main board
The main board consists of the CPU subunit, SW subunit, memory card (MC), flash subunit,
PHY subunit, and PoE subunit.

CPU (central processing unit) subunit
Switch-wide management, PHY subunit control, and protocol processing are
performed by software.
The software is stored in internal flash memory installed on the flash subunit.

SW (switch processor)
This subunit performs L2 frame switching. The SW subunit performs
hardware-based processing including MAC address learning and aging, link
aggregation, filter or QoS table lookups, and DMA transfers of incoming and
outgoing frames. Such processing makes high-speed frame switching possible.

MC (memory card)
MC slot.
An SD card is used as a memory card for storing configuration files and failure
information.

Flash subunit (flash memory)
This subunit stores software, configuration files, and log data.

PHY (physical interface) subunit
This interface subunit supports various kinds of media.

PoE/PoE Plus/PoE (60 W power suppy) subunit (AX2230S-24P model)
A Gigabit Ethernet port supplies a maximum of 60 W power (port 0/1 to 0/4) or a
maximum of 30 W power (port 0/5 to 0/24) to power-receiving devices.
(b) PS (power supply)
The power supply converts power from an external source to DC power that can be used
inside the Switch. To replace the PS unit, you must stop and replace the whole Switch.
(c) FAN (AX2230S-24P model)
The Switch is equipped with fans that cool the inside of the Switch.
2 Switch Configuration
13