Scu; Power Supply - Huawei S1720 Series Product Description

S1720 Series Ethernet Switches
Product Description
Figure 3-4 Logical structure of hardware modules

3.3.1 SCU

The SCU is fixed on the S1720. Each S1720 has one SCU.
The SCU is responsible for packet switching and device management. It integrates multiple
functional modules, namely, the main control module, switching module, and interface module.
Main Control Module
The main control module implements the following functions:
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Switching Module
The switching module, also called the switching fabric, is responsible for packet exchange,
multicast replication, QoS scheduling, and access control on the interface module of the SCU.
The switching module adopts high performance ASIC chips to implement line-speed forwarding
and fast switching of data with different priorities.
Interface Module
The interface module provides Ethernet interfaces for accessing Ethernet services.

3.3.2 Power Supply

Table 3-4
Issue 01 (2014-07-20)
SCU
Switch Module
Control Module
Power Supply
Data Bus
Processing protocols
Functioning as an agent of the user to manage the system and monitor the system
performance according to instructions of the user, and report the running status of the device
to the user
Monitoring and maintaining the interface module and switching module on the SCU
lists power supplies supported by the .
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Interface
Module
Control Bus
3 Hardware Architecture
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