Item Specification
Maximum power
consumption
LE02SRUA: 81 W (including FSUA)
LE03SRUA: 87 W (including FSUA and CKMA)
SRUB: 105 W (including FSUA and CKMA)
Weight LE02SRUA: 2.80 kg
LE03SRUA: 2.90 kg
SRUB: 2.90 kg
5.3 MCUA - Main Control Unit
The MCUA is the main control unit of the S9303.
5.3.1 Introduction
5.3.2 Function and Application
5.3.3 Panel
5.3.4 Interfaces
5.3.5 Interface Attributes
5.3.6 Technical Specifications
5.3.1 Introduction
The MCUA is the control and switching platform of the S9303. It integrates the control unit,
system clock unit, and system maintenance unit. The MCUA is the core component for system
control and management. In addition, as the clock source and maintenance unit of the system,
the MCUA is the control plane and maintenance plane of the system.
There are two types of the MCUA boards, namely, LE02MUCA and LE03MCUA. The
LE03MCUA has a clock board and supports time synchronization and clock synchronization.
5.3.2 Function and Application
Function Description
The MCUA of the S9303 has the following functions:
l Providing out-band communication channels between boards.
l Providing high-precision stratum-3 clock and synchronous Ethernet clock conforming to
IEEE 1588: These clocks ensure synchronization of interfaces and transmission clocks
between LPUs.
l Monitoring system operation: The MCUA collects operation data of different units
periodically. According to the running status of the units, the MCUA generates the control
Quidway S9300 Terabit Routing Switch
Hardware Description 5 Boards
Issue 01 (2010-12-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
5-19
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