Indicator/
Button
Description
OFL
button
This button indicates the removal of the NPU. Before removing the NPU, press
and hold the OFL button for 6s until the OFL indicator comes on. Then, you
can remove the NPU.
Specifications
lists the specifications of the NPU.
Table 3-24
Specifications of the NPU
Item
Specification
Silkscreen of the board
name
NPU-120-E
Typical power
consumption
200 W
Heat dissipation
648.9 BTU/hour
Weight
2.62 kg ( 5.78 lb )
Dimensions (H x W x D)
20 mm x 194 mm x 226 mm (0.79 in. x 7.64 in. x 8.90 in. )
Earliest Software Version
V800R005C01
3.5 Control Plane
3.5.1 Introduction to the Control Plane
The function of control plane is implemented by the MPU.
The device can be equipped with a single MPU or double MPUs (in backup mode).
In the case of double MPUs, when the master MPU is working, the slave MPU is in the standby
state. You can connect either the management network port on the master MPU or that on the
slave MPU to the device. The slave MPU exchanges information (heartbeat messages and
backup data) with only the master MPU. Data consistency between the master and slave MPUs
is ensured through high reliability mechanisms such as batch backup and real-time backup. After
a master/slave switchover, the slave MPU immediately becomes the master MPU. You can
configure a default master MPU. During the start process, the MPU that you configure wins the
competition and becomes the master MPU.
MPUs support two switchover modes: failover and manual switchover. The failover is triggered
by serious faults or resetting of the master MPU. The manual switchover is triggered by
commands run on the console interface or management interface.
HUAWEI CX600-X1-M/CX600-X2-M Series Metro
Services Platform
Hardware Description
3 CX600-X2-M16 Hardware Description
Issue 03 (2014-04-30)
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Copyright © Huawei Technologies Co., Ltd.
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