The system clock unit of the MPU provides NPUs and PICs with reliable and synchronous
SDH clock signals.
The MPUs supports 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 upgrade of 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.
1.5.2 MPUG
Figure 1-13 shows the MPUG panel.
Figure 1-13 Appearance of the MPUG panel
1. USB indicator
2. USB interface 3. RS-485 interface 4. BITS clock interface
5. Console interface 6. AUX interface 7. ETH LINK indicator 8. ETH interface
9. ETH ACT indicator 10. RST button 11. ACT indicator 12. STAT indicator
Table 1-9 Description of the buttons and indicators on the MPUG panel
Indicator/
Button
Description
STAT indicator If the indicator is steady green, it indicates that the MPUG works
normally.
If the indicator blinks green, it indicates that the MPUG is being
registered.
If the indicator is steady red, it indicates that the hardware of the MPUG
is faulty.
If the indicator is off, it indicates that the MPUG is not powered on or
fails to be registered.
ACT indicator
If the indicator is steady green, it indicates that the MPUG functions as
the master MPU.
If the indicator is off, it indicates that the MPUG functions as the slave
MPU or is not registered.
HUAWEI NE40E-X1 & NE40E-X2 Universal Service
Router
Hardware Description 1 NE40E-X1 Hardware Description
Issue 02 (2011-09-10) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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