Alaxala AX2200S Series Configuration Manual page 36

2 Switch Configuration
(2) AX1250S Series
Figure 2-9 Hardware configuration (AX1250S-24T2C model)
The Switch chassis includes the main board and a power supply (PS) unit.
(a) Main board
The main board consists of the CPU subunit, SW subunit, memory card (MC), flash subunit,
PHY subunit, and Sub-CPU 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.

Sub-CPU (sub-central processing unit) subunit
This subunit monitors the temperature sensor.
(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.
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