HUAWEI NetEngine40E Universal ServiceRouter
Hardware Description
2 NE40E-X16 Chassis Overview
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
To support IEEE 1588v2, that is, the Precision Time Protocol (PTP), the SDH clock interface
can input time information in multiple formats by selecting specific software.
System Maintenance Unit
As the system maintenance unit, the MPU collects monitored information to test system units
locally or remotely, or implement in-service upgrading of system units.
The MPU periodically collects information about the operation of system units through the
Monitorbus. The MPU then generates related control information based on the collected
information, for example, the detection of board installations and adjustments to fan speed.
Through the joint test action group (JTAG) bus, the MPU remotely or locally tests system
units, or performs in-service upgrades of system units.
Reliability
The main control modules, clock modules, and LAN switch modules on the MPU work in 1:1
hot backup mode, thus improving system reliability.
The two MPUs work in 1:1 backup mode. Each MPU monitors the status of the other. If the
master MPU is faulty, the slave MPU automatically takes over as the master MPU.
2.5.2 Main Processing Unit B4
Appearance
Figure 2-20 shows the appearance of the CR5D0MPUB460.
Figure 2-20 Appearance of the MPU
In this document, the equipment exterior is for reference only. The actual equipment may differ from
what is shown in the figures.
Panel
Figure 2-21 shows the appearance of the panel.
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