Huawei modular devices have multiple hardware modules that provide different functions.

The hardware modules of Huawei modular devices and their functions are:

Main Processing Unit (MPU):Provides control and management planes for the entire system, responsible for protocol processing, system security, and software upgrades.

Switch Fabric Unit (SFU):Provides the data plane, enabling high-speed data switching between service modules.

Line Processing Unit (LPU):Manages data forwarding, offering various interfaces (optical and electrical) for data access​​.