The MPU integrates multiple functional units. By integrating the system control and
management unit, clock unit, and system maintenance unit, the MPU provides the functions of
the control plane and maintenance plane. The functions of the MPU are detailed as follows:
l System control and management unit
The MPU is mainly responsible for processing routing protocols. In addition, the MPU
broadcasts and filters routing packets, downloads routing policies from the policy server.
The MPU manages the NPUs and communicates with the NPUs. The MPU implements
outband communication between boards. The MPU manages and carries out
communication between the NPUs and slave MPU through the outband management bus.
The MPU is also responsible for data management. The system configuration data, booting
file, upgrade software, and system logs are stored on the MPU. The Compact Flash (CF)
card on the MPU functions as a mass storage device for saving data files including system
files, configuration files, and logs, and is not hot-swappable.
The MPU manages and maintains the device. Through management interfaces such as serial
interfaces and network interfaces on the MPU, you can manage and maintain the device.
l System clock unit
The system clock unit of the MPU provides NPUs and PICs with reliable and synchronous
SDH clock signals.
The MPUs support the clock that complies with IEEE 1588v2.
l System maintenance unit
The system maintenance unit of the MPU collects monitoring information, remotely or
locally tests system units, or performs in-service upgrades on system units.
Through the Monitorbus, the MPU collects the operation data periodically. The MPU
produces controlling information, such as detecting the board presence and adjusting the
fan speed.
NOTE
The MPUs work in 1:1 hot backup mode, improving system reliability.
3.5.2 MPUK
Figure 3-16 shows the MPUK panel.
Figure 3-16 Appearance of the MPU panel
1. STAT indicator
2. ACT indicator 3. ETH ACT indicator 4. ETH interface
5. ETH LINK indicator 6. AUX interface 7. Console interface 8. CLK clock interface
9. TOD date interface 10. RS-485 interface 11. RESET button
HUAWEI CX600-X1-M/CX600-X2-M Series Metro
Services Platform
Hardware Description
3 CX600-X2-M16 Hardware Description
Issue 03 (2014-04-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
83
To Next Page
Loading...
Need help?
General
