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HUAWEI CX600-X1-M/CX600-X2-M Series Metro
Services Platform
Hardware Description
Purpose
This document describes hardware features of the CX600, which helps intended readers obtain
detailed information about each chassis, board, and cable, and rapidly locate specific information
through lists of components.
About This Document
About This Document
Note the following precautions:
l Currently, the device supports the AES and SHA2 encryption algorithms. AES is reversible,
while SHA2 is irreversible. A protocol interworking password must be reversible, and a local
administrator password must be irreversible.
l If the plain parameter is specified, the password will be saved in plaintext in the configuration
file, which has a high security risk. Therefore, specifying the cipher parameter is
recommended. To further improve device security, periodically change the password.
l Do not set both the start and end characters of a password to "%$%$." This causes the
password to be displayed directly in the configuration file.
Related Version
The following table lists the product version related to this document.
Product NameVersion
CX600V800R005C01
NOTICE
U2000V100R009C00
Intended Audience
This document is intended for:
Issue 03 (2014-04-30)Huawei Proprietary and Confidential
HUAWEI CX600-X1-M/CX600-X2-M Series Metro
Services Platform
Hardware Description
lNetwork planning engineers
lHardware installation engineers
lCommissioning engineers
lOn-site maintenance engineers
lSystem maintenance engineers
Symbol Conventions
The symbols that may be found in this document are defined as follows.
SymbolDescription
About This Document
Indicates an imminently hazardous situation which, if not
avoided, will result in death or serious injury.
Indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.
Change History
Updates between document issues are cumulative. Therefore, the latest document issue contains
all updates made in previous issues.
Indicates a potentially hazardous situation which, if not
avoided, may result in minor or moderate injury.
Indicates a potentially hazardous situation which, if not
avoided, could result in equipment damage, data loss,
performance deterioration, or unanticipated results.
NOTICE is used to address practices not related to personal
injury.
Calls attention to important information, best practices and
tips.
NOTE is used to address information not related to personal
injury, equipment damage, and environment deterioration.
Changes in Issue 03 (2014-04-30)
This issue is the third official release.
Changes in Issue 02 (2013-08-30)
This issue is the second official release.
Issue 03 (2014-04-30)Huawei Proprietary and Confidential
1.1.1 System Overview.........................................................................................................................................................2
1.1.2 Main Components and Slot Layout.............................................................................................................................4
1.2 Power Supply System.....................................................................................................................................................9
1.2.1 Architecture of the Power Supply System...................................................................................................................9
1.2.2 Diagram of the Power Supply Architecture................................................................................................................9
1.2.3 DC Power Supply System.........................................................................................................................................10
1.2.4 AC Power Supply System.........................................................................................................................................11
1.3.1 Air Channel................................................................................................................................................................14
1.3.2 Fan Module................................................................................................................................................................14
1.4 Data Plane.....................................................................................................................................................................15
1.4.1 Introduction to the Data Plane...................................................................................................................................15
1.4.2 Introduction to the NPU-50.......................................................................................................................................16
1.4.3 Introduction to the NPU-50-E...................................................................................................................................18
1.4.4 Introduction to the NPU-120.....................................................................................................................................19
1.4.5 Introduction to the NPU-120-E.................................................................................................................................21
1.5 Control Plane................................................................................................................................................................23
1.5.1 Introduction to the Control Plane..............................................................................................................................23
2.1.1 System Overview.......................................................................................................................................................29
2.1.2 Main Components and Slot Layout...........................................................................................................................32
2.2 Power Supply System...................................................................................................................................................40
2.2.1 Architecture of the Power Supply System.................................................................................................................40
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Hardware Description
2.2.2 Diagram of the Power Supply Architecture..............................................................................................................41
2.2.3 DC Power Supply System.........................................................................................................................................41
2.2.4 AC Power Supply System.........................................................................................................................................43
2.3.1 Air Channel................................................................................................................................................................44
2.3.2 Fan Module................................................................................................................................................................45
2.4 Data Plane.....................................................................................................................................................................47
2.4.1 Introduction to the Data Plane...................................................................................................................................47
2.4.2 Introduction to the NPU-50.......................................................................................................................................47
2.4.3 Introduction to the NPU-50-E...................................................................................................................................49
2.4.4 Introduction to the NPU-120.....................................................................................................................................50
2.4.5 Introduction to the NPU-120-E.................................................................................................................................52
2.5 Control Plane................................................................................................................................................................54
2.5.1 Introduction to the Control Plane..............................................................................................................................54
3.1.1 System Overview.......................................................................................................................................................60
3.1.2 Main Components and Slot Layout...........................................................................................................................62
3.2 Power Supply System...................................................................................................................................................69
3.2.1 Architecture of the Power Supply System.................................................................................................................69
3.2.2 Diagram of the Power Supply Architecture..............................................................................................................69
3.2.3 DC Power Supply System.........................................................................................................................................70
3.2.4 AC Power Supply System.........................................................................................................................................71
3.3.1 Air Channel................................................................................................................................................................73
3.3.2 Fan Module................................................................................................................................................................73
3.4 Data Plane.....................................................................................................................................................................75
3.4.1 Introduction to the Data Plane...................................................................................................................................75
3.4.2 Introduction to the NPU-50.......................................................................................................................................75
3.4.3 Introduction to the NPU-50-E...................................................................................................................................77
3.4.4 Introduction to the NPU-120.....................................................................................................................................79
3.4.5 Introduction to the NPU-120-E.................................................................................................................................80
3.5 Control Plane................................................................................................................................................................82
3.5.1 Introduction to the Control Plane..............................................................................................................................82
5.1 Power Cable................................................................................................................................................................133
5.1.1 DC Power Cables.....................................................................................................................................................133
5.1.2 AC Power Cables.....................................................................................................................................................134
5.2 Chassis and Cabinet Grounding Cable.......................................................................................................................135
5.3 Console Port Cable.....................................................................................................................................................136
5.4 Auxiliary Port Cable...................................................................................................................................................138
A List of Indicators.......................................................................................................................155
A.1 Indicators on the CX600-X1-M4...............................................................................................................................156
A.1.1 Indicators on a Fan Module....................................................................................................................................156
A.1.2 Indicators on a PSU................................................................................................................................................156
A.1.3 Indicators on an MPU.............................................................................................................................................157
A.1.4 Indicators on an NPU..............................................................................................................................................157
A.1.5 Indicators on a Flexible Card..................................................................................................................................158
A.2 Indicators on the CX600-X2-M8...............................................................................................................................159
A.2.1 Fan Module Indicators............................................................................................................................................159
A.2.2 Power Module Indicators........................................................................................................................................159
A.3 Indicators on the CX600-X2-M16.............................................................................................................................162
A.3.1 Fan Module Indicators............................................................................................................................................162
A.3.2 Power Module Indicators........................................................................................................................................162
B List of Boards.............................................................................................................................165
B.1 List of Boards.............................................................................................................................................................166
B.2 Board Power Consumption and Weight....................................................................................................................168
C List of Interface Attributes......................................................................................................170
C.1 Interface Attributes of 10Base-TX/100Base-TX/1000Base-T-RJ45.........................................................................171
C.2 Interface Attributes of 1000Base-X-SFP...................................................................................................................171
C.3 Interface Attributes of 10GBase LAN-SFP+.............................................................................................................172
C.4 Interface Attributes of OC-3c/STM-1c cPOS-SFP....................................................................................................174
C.5 Interface Attributes of OC-3c/STM-1c POS-SFP......................................................................................................175
HUAWEI CX600-X1-M/CX600-X2-M Series Metro
Services Platform
Hardware DescriptionContents
D Optical Module.........................................................................................................................178
D.1 Instructions on How to Use an Optical Module........................................................................................................179
HUAWEI CX600-X1-M/CX600-X2-M Series Metro
Services Platform
Hardware Description
1.1 Overview
The CX600-X1-M4 is a high-end network device developed by Huawei. This device is based
on the VRP and applies to the access, convergence, and transmission of Metro services.
The CX600-X1-M4 has great capabilities for network access, Layer 2 switching, and EoMPLS
transmission, and supports a wide range of high-speed and low-speed interfaces. In addition, the
CX600-X1-M4 supports triple-play of voice, video, and data services and can bear 2G, 3G, and
LTE services simultaneously. The CX600-X1-M4 can be deployed together with Huawei NE,
CX, and ME series products to build a hierarchical Metro Ethernet network that offers extensive
services.
1.1.1 System Overview
System Overview
Being equipped with a centralized routing engine and NP forwarding structure, the CX600-X1M4 has a great capacity and can provide diverse services.
1 CX600-X1-M4 Hardware Description
The CX600-X1-M4 has an integrated chassis that can be installed independently. The main parts
of the CX600-X1-M4 such as MPUs, NPUs, PICs, fan modules, and PSUs are hot-swappable.
Figure 1-1 shows the outline of the CX600-X1-M4. The CX600-X1-M4 provides one slot for
the NPU and four slots for PICs. The network process unit on the CX600-X1-M4 is NPU. All
the PICs switch data with each other through the NPU.
Figure 1-1 Outline of the CX600-X1-M4
System Architecture
The logical architecture of the CX600 consists of the following planes: data plane, control and
management plane, and monitoring plane, as shown in Figure 1-2. The data plane processes and
switches data packets quickly and smoothly; the control and management plane, as the core of
the system, controls and manages the system; the monitoring plane monitors the ambient
operating conditions.
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Hardware Description
ItemSpecification
Storage temperature-40°C to +70°C (-40°F to 158°F)
1 CX600-X1-M4 Hardware Description
Ambient
relative
humidity
Storage relative humidity0% RH to 95% RH, noncondensing
Long-term working altitudeLower than 3000 m (9842.4 ft)
Storage altitudeLower than 5000 m (16404 ft)
NOTE
In the dimensions shown in the table, the width (W) does not include the rack-mounting ears.
Temperature and humidity are measured at 1.5 m (4.92 ft.) above the floor and 0.4 m (1.31 ft.) in front of the
cabinet. There should be no protection board on the front or back of the cabinet.
"Short-term" refers to continuous working time that does not exceed 96 hours and accumulated working time
per year that does not exceed 15 days. If the working time exceeds either of these values, it is considered "longterm".
The device cannot start at an ambient temperature lower than -20°C (-4°F).
Product Specifications
Long-term5% RH to 85% RH, noncondensing
Short-term5% RH to 95% RH, noncondensing
Table 1-4 System configuration list of the CX600-X1-M4
ItemDescription
Processing unitMain frequency: 1.2 GHz
SDRAM2 GB
Flash16 MB
eUSB2 GB
Switching capacity240 Gbit/s (NPU-120\120-E)
100 Gbit/s (NPU-50\50-E)
Interface capacityNPU-120\120-E:240 Gbit/s
NPU-50\50-E: 100 Gbit/s
Number of NPU slots1
Number of PIC slots4
Number of MPU slots2
Maximum port rate supported by
10 Gbit/s
PICs or NPU
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Hardware Description
TypeBoard NameSilkscreen Print
1 CX600-X1-M4 Hardware Description
FICAuxiliary Flexible Interface Card
with 4-Port 100Base-RJ45
(FIC,Supporting 1588v2)
1.2 Power Supply System
1.2.1 Architecture of the Power Supply System
The device supports DC power input of -48 V DC or -60 V DC and outside AC power input of
85 V AC or 220 V AC.
The device is powered by two PSUs, which work in 1+1 backup mode. When one PSU fails or
is removed, the other one can still supply adequate power for the device. The PSUs are installed
in the two top slots of the chassis and supply power for the MPUs, NPU, PICs, and fan module.
In the case of an AC power supply system, one AC power frame is placed outside the chassis
(Huawei ETP48120-F1 is configured compliant to the standards) and installed with rectifier
modules based on system power. The AC power frames are then connected to the input terminals
on the DC-PEMs to supply power for the system. (In short, external AC power frames are added
to the DC power supply system to constitute an AC power supply system.)
AUX/4xFE-A
The following measures are taken to ensure that the PSUs can supply stable and safe power for
the system:
lProtection against output overcurrent
lProtection against output overvoltage
lProtection against input undervoltage
lProtection against overtemperature
lProtection against short circuit
lAlarm generation
1.2.2 Diagram of the Power Supply Architecture
A power supply system consists of two power modules working in 1+1 redundancy mode.
Figure 1-6 shows the diagram of the power supply architecture. Each power module provides
a 48 V power input and a 3.3 V power input to the boards. The two 48 V power inputs are
integrated in the boards and the two 3.3 V power inputs are integrated in the backplane and then
input to the boards. Each power module provides a 48 V power input to the fans. The two 48 V
power inputs are integrated in the backplane and then input to the fans.
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Table 1-6 Description of the indicators on the PSUs
Indicator NameDescription
OUTWhen the indicator is steady green, the PSUs are working properly
and supply stable power.
When the indicator is steady red, the hardware of the PSUs fails or
the device is not supplied with power ranging from -48 V or -60 V or
the input voltage is lower or higher than the normal range.
When the indicator is off, the PSUs are switched off or the hardware
of the PSUs is faulty.
INWhen the indicator is steady green, the power input is normal.
When the indicator is off, the device is not supplied with power
ranging from -48 V or -60 V.
lNotes on DC power monitoring:
The DC power monitoring channel can implement real-time monitoring on power supply.
In addition, the DC power monitoring channel allows you to query the manufacturing ID,
input voltage, and temperature of the PSUs in real time, and supports real-time reporting
of power supply alarms.
lNotes on the configuration of DC power cables:
You do not need to connect protection ground cables to the PSUs, but the protection ground
cable for the chassis must be properly grounded. DC power cables include a -48 V power
cable and a return (RTN) ground cable. The required cable length depends on the distance
between the cabinet and the power distribution cabinet for the device. The DC power cables
need to be prepared according to the required lengths on site. For details about DC power
cables, see 5.1.1 DC Power Cables.
1 CX600-X1-M4 Hardware Description
1.2.4 AC Power Supply System
Working principles of the ETP48120-F1 AC power supply system are as follows:
The ETP48120-F1 uses single-phase power input.
The ETP48120-F1 supplies power for AC-DC rectifiers using the system backplane.
The DC output of the AC-DC rectifiers is congregated by the bus and then divided to multiple
power-supplying channels.
The SMU01A monitoring module monitors the operating parameters of the ETP48120-F1 in
real time, analyzes the operating status, and reports alarms.
Figure 1-8 shows the outline of an AC power supply system.
Figure 1-8 Outline of an AC Power Supply System
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1 CX600-X1-M4 Hardware Description
LEDColorNor
mal
Stat
us
Protection
LED
YellowoffonOvertemperature
Abn
orm
al
Stat
us
Blink
ing
Blink
ing
Exception CauseSuggestion
The input fuse is
damaged.
Being queried
manually.
pre-alarm.
An AC input
undervoltage or
overvoltage occurs.
Communication
between the
rectifier and an
external side is
interrupted.
Replace the rectifier.
Exit the query state.
Ensure that the vent of the
rectifier is unblocked.
Ensure that the AC input
voltage is normal.
Clean the golden finger
connection. If the protection
LED is still blinking, rectify
the fault on the external
module.
Fault LEDRedoffonOutput overvoltage
1.3 Heat Dissipation System
The heat dissipation system is responsible for the heat dissipation of the entire device. Heat
generated by the boards is dissipated through the heat dissipation system. In this manner, the
temperatures of the components on the boards are controlled within a normal range, enabling
the boards to work stably. The heat dissipation system is composed of a fan frame, an air intake
vent, an air exhaust vent, and an air channel. All the fans in the fan frame work simultaneously,
and their rotation speeds can be adjusted by area. When one fan fails, the heat dissipation system
can still allow the device to work at an ambient temperature of 40°C (104°F) for a short period.
The temperature sensors, which are located on the air exhaust vent and boards, monitor the
temperatures of the components on the boards and adjust the fan rotation speeds according to
the commands delivered by the MPU to control the board temperatures.
Blink
ing
occurs.
No output exists
because of a fault
inside the rectifier.
Software is being
loaded.
Remove the rectifier and
install it again. If there is still
no output, replace the
rectifier.
Replace the rectifier.
The LED stops blinking when
the loading is complete.
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Hardware Description1 CX600-X1-M4 Hardware Description
1.3.1 Air Channel
The CX600-X1-M4 dissipates heat by blowing air in a left-to-right direction. Figure 1-10 shows
the air flow in the CX600-X1-M4.
Figure 1-10 Air flow in the CX600-X1-M4
1.3.2 Fan Module
The air intake vent of the CX600-X1-M4 is 3U (133.35 mm or 5.25 in.) high and 220 mm (8.67
in.) deep.
There are six fans in the fan frame of the CX600-X1-M4. When one fan fails, the device can
still work at an ambient temperature of 40°C (104°F) for a short period.
The rotation speeds of the fans can automatically be adjusted based on the device temperature.
Figure 1-11 Outline of the fan module for the CX600-X1-M4
Table 1-9 Technical specifications of the fan module for the CX600-X1-M4
ItemSpecification
Dimensions
(H x W x D)
Weight1.1 kg (2.43 lb)
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130 mm x 50 mm x 226 mm (5.12 in. x 1.97 in. x 8.90 in.)
HUAWEI CX600-X1-M/CX600-X2-M Series Metro
Services Platform
Hardware Description
ItemSpecification
1 CX600-X1-M4 Hardware Description
Maximum
power
consumption
Maximum
wind
pressure
Maximum
wind rate
Noise56.5 dB
Table 1-10 Description of the indicators on the fan module
Indicator/ButtonDescription
FAN indicatorWhen the indicator is steady green, the fan module is working
118 W
569 Pa
135 cubic feet per minute (CFM)
properly.
When the indicator is off, the fan module is unregistered, powered
off, or has a hardware fault.
When the indicator is steady red, the fan module fails.
1.4 Data Plane
1.4.1 Introduction to the Data Plane
As key parts of the CX600-X1-M4, Network Processing Units (NPUs) are responsible for data
processing and data exchange between Physical Interface Cards (PICs) and NPUs.
The procedure for data processing is as follows:
1.The IP packets sent from PICs converge at a convergence module.
2.The Network Processor (NP) processes the IP packets.
3.The Traffic Management (TM) module performs traffic management on the IP packets.
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Figure 1-13 Appearance of the NPU on the CX600-X1-M4
1. STAT indicator2. ACT indicator3. OFL button
Table 1-12 describes the buttons and indicators on the NPU panel.
Table 1-12 Description of the buttons and indicators on the NPU panel
1 CX600-X1-M4 Hardware Description
Specifications
Indicator/
Description
Button
STAT
indicator
If the indicator is on, the NPU is working properly.
If the indicator blinks green, theNPU is being registered.
If the indicator is off, the NPU is faulty, not powered on, or fails to be registered.
ACT
indicator
OFL
button
If the indicator is steady green, the NPU is in the master state.
If the indicator is off, the NPU is in the slave state or fails to be registered.
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.
Table 1-13 lists the specifications of the NPU.
Table 1-13 Specifications of the NPU
ItemSpecification
Silkscreen of the board
NPU-50
name
Typical power
165 W
consumption
Heat dissipation535.3 BTU/hour
Weight2.6 kg (5.73 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 VersionV800R005C01
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Hardware Description
1 CX600-X1-M4 Hardware Description
Specifications
Indicator/
Button
ACT
indicator
OFL
button
Table 1-16 lists the specifications of the NPU.
Table 1-16 Specifications of the NPU
ItemSpecification
Silkscreen of the board
name
Typical power
consumption
Description
If the indicator is steady green, the NPU is in the master state.
If the indicator is off, the NPU is in the slave state or fails to be registered.
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.
NPU-50-E
165 W
Heat dissipation535.3 BTU/hour
Weight2.6 kg ( 5.73 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 VersionV800R005C01
1.4.4 Introduction to the NPU-120
NOTE
NPU-120 must not be installed in an outdoor cabinet.
The NPU-120 has a 120-Gbit/s forwarding capability in each direction, and all subcards switch
data through the NPU-120.
You can install only one NPU-120 on the chassis of the CX600-X1-M4. The NPU-120 is
connected to the four PICs.
The NPU-120 consists of the following planes:
lControl and management plane
Through the management channels between MPUs and NPUs, the MPUs can manage
NPUs and associated subcards, and transmit routing protocol data.
lData forwarding plane
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Hardware Description
The NPUs are responsible for service processing in the entire system, and are connected
to all subcards through data channels.
Table 1-17 NPU parameters
ItemDescriptionRemarks
Forwarding capability120 Gbit/s (bidirectional)-
Figure 1-15 Appearance of the NPU panel
1 CX600-X1-M4 Hardware Description
1. STAT indicator
2. ACT indicator3. OFL button
Table 1-18 describes the buttons and indicators on the NPU panel.
Table 1-18 Description of the buttons and indicators on the NPU panel
Indicator/
Description
Button
STAT
indicator
If the indicator is steady green, the NPU is working properly.
If the indicator is steady red, the hardware of the NPU is faulty.
If the indicator blinks green, theNPU is being registered.
If the indicator is off, the NPU is not powered on or fails to be registered.
ACT
indicator
OFL
indicator
If the indicator is steady green, the NPU is in the master state.
If the indicator is off, the NPU is in the slave state or fails to be registered.
If the indicator is steady red, the NPU is powered off and can be safely removed.
If the indicator is off, the NPU is working properly.
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
Table 1-19 lists the specifications of the NPU.
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Hardware Description1 CX600-X1-M4 Hardware Description
Figure 1-16 Appearance of the NPU panel
1. STAT indicator2. ACT indicator3. OFL button
Table 1-21 describes the buttons and indicators on the NPU panel.
Table 1-21 Description of the buttons and indicators on the NPU panel
Specifications
Indicator/
Button
STAT
indicator
ACT
indicator
OFL
indicator
OFL
button
Description
If the indicator is steady green, the NPU is working properly.
If the indicator is steady red, the hardware of the NPU is faulty.
If the indicator blinks green, theNPU is being registered.
If the indicator is off, the NPU is not powered on or fails to be registered.
If the indicator is steady green, the NPU is in the master state.
If the indicator is off, the NPU is in the slave state or fails to be registered.
If the indicator is steady red, the NPU is powered off and can be safely removed.
If the indicator is off, the NPU is working properly.
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.
Table 1-22 lists the specifications of the NPU.
Table 1-22 Specifications of the NPU
ItemSpecification
Silkscreen of the board
NPU-120-E
name
Typical power
200 W
consumption
Heat dissipation648.9 BTU/hour
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Hardware Description
ItemSpecification
Weight2.62 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 VersionV800R005C01
1.5 Control Plane
1.5.1 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).
1 CX600-X1-M4 Hardware Description
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.
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:
lSystem 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.
lSystem clock unit
The system clock unit of the MPU provides NPUs and PICs with reliable and synchronous
SDH clock signals.
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The MPUs support the clock that complies with IEEE 1588v2.
lSystem 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.
1.5.2 MPUK
Figure 1-17 shows the MPUK panel.
Figure 1-17 Appearance of the MPU panel
1. STAT indicator
5. ETH LINK indicator6. AUX interface7. Console interface8. CLK clock interface
9. TOD date interface10. RS-485 interface11. RESET button
2. ACT indicator3. ETH ACT indicator4. ETH interface
Table 1-23 Description of the buttons and indicators on the MPU panel
Indicator/
Description
Button
STAT indicatorIf the indicator is steady green, the MPU is working properly.
If the indicator blinks green, the MPU is being registered.
If the indicator is steady red, the hardware of the MPU is faulty.
If the indicator is off, the MPU is not powered on or fails to be registered.
ACT indicatorIf the indicator is steady green, the MPU functions as the master MPU.
If the indicator is off, the MPU functions as the slave MPU or is not
registered.
ETH LINK
indicator
If the indicator is steady green, the ETH link is Up.
If the indicator is off, the ETH link is Down.
ETH ACT
indicator
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If the indicator blinks yellow, data is being transmitted.
If the indicator is off, no data is being transmitted.
HUAWEI CX600-X1-M/CX600-X2-M Series Metro
Services Platform
Hardware Description
2.1 Overview
The CX600-X2-M8 is a high-end network device developed by Huawei. This device is based
on the VRP and applies to the access, convergence, and transmission of Metro Ethernet services.
The CX600-X2-M8 has great capabilities in network access, Layer 2 switching, and EoMPLS
transmission, and supports a wide range of high-speed and low-speed interfaces. Hence, the
CX600-X2-M8 supports triple-play of voice, video, and data services and can bear 2G/3G/LTE
services simultaneously. The CX600-X2-M8 can be deployed together with Huawei NE, CX,
and ME series products to build a Metro Ethernet network with a clear hierarchy and offer
extensive services. This chapter provides an overview of the CX600-X2-M8 hardware.
2.1.1 System Overview
System Overview
Being equipped with a centralized routing engine and NP forwarding structure, the CX600-X2M8 has a great capacity and can provide extensive services.
2 CX600-X2-M8 Hardware Description
The CX600-X2-M8 uses an integrated chassis that can be installed independently. The main
parts of the CX600-X2-M8 such as MPUs, NPUs, PICs, fan modules, and PSUs are hotswappable.
Figure 2-1 shows the outline of the CX600-X2-M8. The CX600-X2-M8 provides two slots for
NPUs and eight slots for PICs. The network process unit on the CX600-X2-M8 is NPU. All the
PICs perform data exchange through the NPU.
CX600-X2-M8s are classified into CX600-X2-M8 DCs and CX600-X2-M8 ACs.
Figure 2-1 Outline of the CX600-X2-M8 DC
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Figure 2-2 Outline of the CX600-X2-M8 AC
System Architecture
The logical architecture of the CX600 consists of the following planes: data plane, control and
management plane, and monitoring plane, as shown in Figure 2-3. The data plane processes and
switches data packets quickly and smoothly; the control and management plane, as the core of
the system, controls and manages the system; the monitoring plane monitors the ambient
operating conditions.
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Table 2-1 Slot layout of the CX600-X2-M8
SlotNumberRemarks
1 to 88For PICs, which include HICs, FICs and the other subcards.
9 and 102For NPUs.
11 and 122For MPUs, which are in 1:1 backup.
13 and 142For PSUs, which are in 1+1 backup.
151For the fan frame.
NOTE
An FIC refers to a subcard on which every port works at a rate of lower than 1 Gbit/s. An HIC refers to a
subcard on which every port works at a rate of at least 1 Gbit/s.
Other subcards, including the 8-Channel CWDM Multiplexing/Demultiplexing Physical Interface Card
and Auxiliary Flexible Interface Card.
When the 4x10GE-SFP+ subcard is installed, the NPU-120 or NPU-120-E must also be installed. In
addition, the 4x10GE-SFP+ subcard must be installed in one of the four slots close to the NPU.
For the CX600-X2-M8 that has the NPU-50/NPU-50-E installed, 2-port 10GBase subcard cannot be
installed in both slot 1 and slot 8. It is recommended that you insert a 10GE PIC into a slot close to the
NPU.
2 CX600-X2-M8 Hardware Description
Board Working Modes Supported by the CX600-X2-M8
The CX600-X2-M8 supports the master/slave and load balancing working modes for NPUs.
lMaster/slave
– In master/slave mode, the master NPU forwards services of all subcards, and the slave
NPU is a hot standby backup. The slave NPU takes over the services only when the
master NPU is unavailable, for example, when the master NPU fails or restarts. This
implementation prevents service interruptions when the master NPU is unavailable.
– In master/slave mode, each NPU manages all the eight subcards, PICs 1 to 8 in Figure
2-7.
lLoad balancing
– In load balancing mode, two NPUs forward services of their managed subcards
respectively to load balance the total traffic of all subcards. If one NPU is unavailable,
the other NPU will not take over services on the unavailable NPU. Therefore, the load
balancing mode is less reliable than the master/slave mode.
– In load balancing mode, each NPU manages only the subcards in the same half board
cage as the NPU itself. For example, in the board layout shown in Figure 2-7, NPU 9
manages PICs 1 to 4, and NPU 10 manages PICs 5 to 8. If NPU 10 is unavailable,
NPU 9 will not take over the services of PICs 5 to 8.
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Storage temperature-40°C to +70°C (-40°F to 158°F)
Ambient
Long-term5% RH to 85% RH, noncondensing
operating
relative
Short-term5% RH to 95% RH, noncondensing
humidity
Storage relative humidity0% RH to 95% RH, noncondensing
Long-term working altitudeLower than 3000 m (9842.4 ft)
Storage altitudeLower than 5000 m (16404 ft)
NOTE
In the dimensions shown in the table, the width (W) does not include the rack-mounting ears.
Temperature and humidity are measured at 1.5 m (4.92 ft.) above the floor and 0.4 m (1.31 ft.) in front of the
cabinet. There should be no protection board on the front or back of the cabinet.
"Short-term" refers to continuous working time that does not exceed 96 hours and accumulated working time
per year that does not exceed 15 days. If the working time exceeds either of these values, it is considered "longterm".
Product Specifications
Table 2-5 System configuration list of the CX600-X2-M8
ItemDescription
Processing unitMain frequency: 1.2 GHz
SDRAM2 GB
Flash16 MB
eUSB2 GB
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The device supports DC power input of -48 V DC or -60 V DC and AC power input of 110 V
AC or 220 V AC.
The device is powered by two PSUs, which work in 1+1 backup mode. When one PSU fails or
is removed, the other one can still supply adequate power for the device. The PSUs are installed
in the two top slots of the chassis and supply power for the MPUs, NPU, PICs, and fan module.
MD8A-CWDM
AUX/4xFE-A
The following measures are taken to ensure that the PSUs can supply stable and safe power for
the system:
lProtection against output overcurrent
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lProtection against output overvoltage
lProtection against input undervoltage
lProtection against overtemperature
lProtection against short circuit
lAlarm generation
2 CX600-X2-M8 Hardware Description
2.2.2 Diagram of the Power Supply Architecture
A power supply system consists of two power modules working in 1+1 redundancy mode.
Figure 2-9 shows the diagram of the power supply architecture. Each power module provides
a 48 V power input and a 3.3 V power input to the boards. The two 48 V power inputs are
integrated in the boards and the two 3.3 V power inputs are integrated in the backplane and then
input to the boards. Each power module provides a 48 V power input to the fans. The two 48 V
power inputs are integrated in the backplane and then input to the fans.
Figure 2-9 Diagram of the power supply architecture
2.2.3 DC Power Supply System
The device uses two PSUs, which work in 1+1 backup mode, for power supply. Figure 2-10
shows the outline of a PSU.
Figure 2-10 Outline of a PSU
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Table 2-6 Specifications of the PSUs
ItemSpecification
Dimensions (H x W x D)20 mm x 194 mm x 226 mm (0.79 in. x 7.64
Weight1 kg (2.21 lb)
Rated voltage-48 V DC or -60 V DC
Input voltage range-38.4 V DC to -72 V DC
Maximum input current25 A
Maximum output power1200 W
Table 2-7 Description of the indicators on the PSUs
2 CX600-X2-M8 Hardware Description
in. x 8.90 in.)
Indicator NameDescription
OUTWhen the indicator is steady green, the PSUs are working properly
and supply stable power.
When the indicator is steady red, the hardware of the PSUs fails or
the device is not supplied with power ranging from -48 V or -60 V or
the input voltage is lower or higher than the normal range.
When the indicator is off, the PSUs are switched off or the hardware
of the PSUs is faulty.
INWhen the indicator is steady green, the power input is normal.
When the indicator is off, the device is not supplied with power
ranging from -48 V or -60 V.
lNotes on DC power monitoring:
The DC power monitoring channel can implement real-time monitoring on power supply.
In addition, the DC power monitoring channel allows you to query the manufacturing ID,
input voltage, and temperature of the PSUs in real time, and supports real-time reporting
of power supply alarms.
lNotes on the configuration of DC power cables:
You do not need to connect protection ground cables to the PSUs, but the protection ground
cable for the chassis must be properly grounded. DC power cables include a -48 V power
cable and a return (RTN) ground cable. The required cable length depends on the distance
between the cabinet and the power distribution cabinet for the device. The DC power cables
need to be prepared according to the required lengths on site. For details about DC power
cables, see 5.1.1 DC Power Cables.
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2 CX600-X2-M8 Hardware Description
Indicat
or
Name
Output
indicato
r
Fault
indicato
r
ColorNorm
al
Statu
s
GreenOnOffThe indicator is on when the output is normal, and
RedOffBlinkThe indicator is blinking in the following
Abnor
mal
Status
BlinkOvervoltage or undervoltage is input.
OnThe indicator is blinking in the following
Remarks
The panel switch is Off.
is off when the output is abnormal.
situations:
The communication is interrupted for 60s or more
than 60s.
The power is input unevenly.
The AC power module is reset remotely.
situations:
Protection against overtemperature is performed.
2.3 Heat Dissipation System
The heat dissipation system is responsible for the heat dissipation of the entire device. Heat
generated by the boards is dissipated through the heat dissipation system. In this manner, the
temperatures of the components on the boards are controlled within a normal range, enabling
the boards to work properly. The heat dissipation system is composed of a fan frame, an air
intake vent, an air exhaust vent, and an air channel. All the fans in the fan frame work
simultaneously, and their rotation speeds can be adjusted by area. When one fan fails, the heat
dissipation system can still allow the device to work at an ambient temperature of 40°C (104°
F) for a short period. The temperature sensors, which are located on the air exhaust vent and
boards, monitor the temperatures of the components on the boards and adjust the fan rotation
speeds according to the commands delivered by the MPU to control the board temperatures.
2.3.1 Air Channel
The CX600-X2-M8 dissipates heat by blowing air from left to right. Figure 2-12 shows the air
flow in the CX600-X2-M8.
Fans become faulty.
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Figure 2-12 Air flow in the CX600-X2-M8
2.3.2 Fan Module
The air intake vent of the CX600-X2-M8 is 5 U ( 222.25 mm or 8.75 in. )high for CX600-X2M8 DCs, 6 U ( 266.7 mm or 10.5 in. )high for CX600-X2-M8 ACs and 220 mm ( 8.66 in. ) deep.
2 CX600-X2-M8 Hardware Description
There are nine fans in the fan frame of the CX600-X2-M8. When one fan fails, the device can
still work at the ambient temperature of 40°C ( 104°F ) for a short period.
The rotation speeds of the fans can be adjusted based on the device temperature.
Figure 2-13 Appearance of the DC fan module for the CX600-X2-M8
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The NPU-50 has the 50-Gbit/s forwarding capability, and all subcards exchange data through
the NPU-50.
You can install two NPUs on the chassis of the CX600-X2-M16. The two NPUs can work in 1
+1 or 1:1 mode. In 1+1 mode, the NPU-50 is connected to the eight PICs. In 1:1 mode, the
NPU-120-E is connected to the sixteen PICs.
The NPU-50 consists of the following planes:
lControl and management plane
Through the management channels between MPUs and NPUs, the MPUs can manage
NPUs and associated subcards, and transmit routing protocol data.
lData forwarding plane
The NPUs are responsible for service processing in the entire system, and are connected
to all subcards through data channels.
Table 2-12 NPU parameters
ItemDescriptionRemarks
Forwarding capability50 Gbit/s-
Figure 2-16 Appearance of the NPU panel
1. STAT indicator
2. ACT indicator3. OFL button
Table 2-13 describes the buttons and indicators on the NPU panel.
Table 2-13 Description of the buttons and indicators on the NPU panel
Indicator/
Description
Button
STAT
indicator
If the indicator is on, the NPU is working properly.
If the indicator blinks green, theNPU is being registered.
If the indicator is off, the NPU is faulty, not powered on, or fails to be registered.
ACT
indicator
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If the indicator is steady green, the NPU is in the master state.
If the indicator is off, the NPU is in the slave state or fails to be registered.
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Hardware Description
2 CX600-X2-M8 Hardware Description
Specifications
Indicator/
Button
OFL
indicator
OFL
button
Table 2-14 lists the specifications of the NPU.
Table 2-14 Specifications of the NPU
ItemSpecification
Silkscreen of the board
name
Description
If the indicator is steady red, the NPU is powered off and can be safely removed.
If the indicator is off, the NPU is working properly.
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.
NPU-50
Typical power
consumption
Heat dissipation535.3 BTU/hour
Weight2.6 kg (5.73 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 VersionV800R005C01
165 W
2.4.3 Introduction to the NPU-50-E
NOTE
NPU-50-E can be installed in an outdoor cabinet.
The NPU-50-E has the 50-Gbit/s forwarding capability, and all subcards exchange data through
the NPU-50-E.
You can install two NPUs on the chassis of the CX600-X2-M16. The two NPUs can work in 1
+1 or 1:1 mode. In 1+1 mode, the NPU-50-E is connected to the eight PICs. In 1:1 mode, the
NPU-120-E is connected to the sixteen PICs.
The NPU-50-E consists of the following planes:
lControl and management plane
Through the management channels between MPUs and NPUs, the MPUs can manage
NPUs and associated subcards, and transmit routing protocol data.
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lData forwarding plane
The NPUs are responsible for service processing in the entire system, and are connected
to all subcards through data channels.
Table 2-15 NPU parameters
ItemDescriptionRemarks
Forwarding capability50 Gbit/s-
Figure 2-17 Appearance of the NPU panel
2 CX600-X2-M8 Hardware Description
1. STAT indicator
2. ACT indicator3. OFL button
Table 2-16 describes the buttons and indicators on the NPU panel.
Table 2-16 Description of the buttons and indicators on the NPU panel
Indicator/
Description
Button
STAT
indicator
If the indicator is on, the NPU is working properly.
If the indicator blinks green, NPU is being registered.
If the indicator is off, the NPU is faulty, not powered on, or fails to be registered.
ACT
indicator
OFL
indicator
OFL
button
If the indicator is steady green, the NPU is in the master state.
If the indicator is off, the NPU is in the slave state or fails to be registered.
If the indicator is steady red, the NPU is powered off and can be safely removed.
If the indicator is off, the NPU is working properly.
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.
2.4.4 Introduction to the NPU-120
NOTE
NPU-120 must not be installed in an outdoor cabinet.
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The NPU-120 has a 120-Gbit/s forwarding capability, and all subcards switch data through the
NPU-120.
You can install two NPUs on the chassis of the CX600-X2-M8. The NPU-120 is connected to
the eight PICs, and the two backup modes of 1:1 and 1+1 are supported.
The NPU-120 consists of the following planes:
lControl and management plane
Through the management channels between MPUs and NPUs, the MPUs can manage
NPUs and associated subcards, and transmit routing protocol data.
lData forwarding plane
The NPUs are responsible for service processing in the entire system, and are connected
to all subcards through data channels.
Table 2-17 NPU parameters
ItemDescriptionRemarks
Forwarding capability120 Gbit/s-
Figure 2-18 Appearance of the NPU panel
1. STAT indicator
2. ACT indicator3. OFL button
Table 2-18 describes the buttons and indicators on the NPU panel.
Table 2-18 Description of the buttons and indicators on the NPU panel
Indicator/
Description
Button
STAT
indicator
If the indicator is steady green, the NPU is working properly.
If the indicator is steady red, the hardware of the NPU is faulty.
If the indicator blinks green, theNPU is being registered.
If the indicator is off, the NPU is not powered on or fails to be registered.
ACT
indicator
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If the indicator is steady green, the NPU is in the master state.
If the indicator is off, the NPU is in the slave state or fails to be registered.
HUAWEI CX600-X1-M/CX600-X2-M Series Metro
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2 CX600-X2-M8 Hardware Description
Specifications
Indicator/
Button
OFL
indicator
OFL
button
Table 2-19 lists the specifications of the NPU.
Table 2-19 Specifications of the NPU
ItemSpecification
Silkscreen of the board
name
Description
If the indicator is steady red, the NPU is powered off and can be safely removed.
If the indicator is off, the NPU is working properly.
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.
NPU-120-E
Typical power
consumption
Heat dissipation648.9 BTU/hour
Weight2.62 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 VersionV800R005C01
200 W
2.4.5 Introduction to the NPU-120-E
NOTE
NPU-120-E can be installed in an outdoor cabinet.
The NPU-120-E has a 120-Gbit/s forwarding capability in each direction, and all subcards
exchange data through the NPU-120-E.
You can install two NPUs on the chassis of the CX600-X2-M16. The two NPUs can work in 1
+1 or 1:1 mode. In 1+1 mode, the NPU-120-E is connected to the eight PICs. In 1:1 mode, the
NPU-120-E is connected to the sixteen PICs.
The NPU-120-E consists of the following planes:
lControl and management plane
Through the management channels between MPUs and NPUs, the MPUs can manage
NPUs and associated subcards, and transmit routing protocol data.
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lData forwarding plane
The NPUs are responsible for service processing in the entire system, and are connected
to all subcards through data channels.
Table 2-20 NPU parameters
ItemDescriptionRemarks
Forwarding capability120 Gbit/s-
Figure 2-19 Appearance of the NPU panel
2 CX600-X2-M8 Hardware Description
1. STAT indicator
2. ACT indicator3. OFL indicator4. OFL button
Table 2-21 describes the buttons and indicators on the NPU panel.
Table 2-21 Description of the buttons and indicators on the NPU panel
Indicator/
Description
Button
STAT
indicator
If the indicator is steady green, the NPU is working properly.
If the indicator is steady red, the hardware of the NPU is faulty.
If the indicator blinks green, theNPU is being registered.
If the indicator is off, the NPU is not powered on or fails to be registered.
ACT
indicator
OFL
indicator
If the indicator is steady green, the NPU is in the master state.
If the indicator is off, the NPU is in the slave state or fails to be registered.
If the indicator is steady red, the NPU is powered off and can be safely removed.
If the indicator is off, the NPU is working properly.
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
Table 2-22 lists the specifications of the NPU.
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Table 2-22 Specifications of the NPU
ItemSpecification
2 CX600-X2-M8 Hardware Description
Silkscreen of the board
name
Typical power
consumption
Heat dissipation648.9 BTU/hour
Weight2.62 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 VersionV800R005C01
NPU-120-E
200 W
2.5 Control Plane
2.5.1 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.
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:
lSystem 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)
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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.
lSystem 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.
lSystem 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
2.5.2 MPUK
The MPUs work in 1:1 hot backup mode, improving system reliability.
Figure 2-20 shows the MPUK panel.
Figure 2-20 Appearance of the MPU panel
1. STAT indicator
5. ETH LINK indicator6. AUX interface7. Console interface8. CLK clock interface
9. TOD date interface10. RS-485 interface11. RESET button
2. ACT indicator3. ETH ACT indicator4. ETH interface
Table 2-23 Description of the buttons and indicators on the MPU panel
Indicator/
Description
Button
STAT indicatorIf the indicator is steady green, the MPU is working properly.
If the indicator blinks green, the MPU is being registered.
If the indicator is steady red, the hardware of the MPU is faulty.
If the indicator is off, the MPU is not powered on or fails to be registered.
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3.1 Overview
The CX600-X2-M16 is a high-end network device developed by Huawei. This device is based
on the VRP and applies to the access, convergence, and transmission of Metro Ethernet services.
The CX600-X2-M16 has great capabilities in network access, Layer 2 switching, and EoMPLS
transmission, and supports a wide range of high-speed and low-speed interfaces. Hence, the
CX600-X2-M16 supports triple-play of voice, video, and data services and can bear 2G/3G/LTE
services simultaneously. The CX600-X2-M16 can be deployed together with Huawei NE, CX,
and ME series products to build a Metro Ethernet network with a clear hierarchy and offer
extensive services. This chapter provides an overview of the CX600-X2-M16 hardware.
3.1.1 System Overview
System Overview
By adopting a centralized routing engine and NP forwarding structure, the CX600-X2-M16 has
a great capacity and can provide extensive services.
3 CX600-X2-M16 Hardware Description
The CX600-X2-M16 adopts an integrated chassis that can be installed independently. The main
parts of the CX600-X2-M16 such as MPUs, NPUs, PICs, fan modules, and PSUs are hotswappable.
Figure 3-1 shows the outline of the CX600-X2-M16. The CX600-X2-M16 provides two slots
for NPUs and sixteen slots for PICs. The network process unit on the CX600-X2-M16 is
NPU. All the PICs perform data switching through the NPU.
Figure 3-1 Outline of the CX600-X2-M16
System Architecture
The logical architecture of the CX600 consists of the following planes: data plane, control and
management plane, and monitoring plane, as shown in Figure 3-2. The data plane processes and
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switches data packets quickly and smoothly; the control and management plane, as the core of
the system, controls and manages the system; the monitoring plane monitors the ambient
operating conditions.
Figure 3-2 Diagram of the system architecture
3 CX600-X2-M16 Hardware Description
Main System Features
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NOTE
CX600-X2-M8/M16 has two NPU boards, and CX600-X1-M4 has only one NPU board.
The main features of the system include:
lNP-based forwarding which enables fast service deployment
lCompact structure which increases the port density
lSeparation of the control channels, service channels, and monitoring channels, which
ensures the connectivity of control channels and monitoring channels
lHigh-level carrier-class reliability and manageability
lModule-level shielding which meets Electro Magnetic Compatibility (EMC) requirements
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Figure 3-4 Slot layout of the CX600-X2-M16
Table 3-1 Slot layout of the CX600-X2-M16
SlotNumberRemarks
1 to 1616For PICs, which include HICs, FICs and the other subcards.
17 and 182For NPUs.
19 and 202For MPUs, which are in 1:1 backup.
21 and 222For PSUs, which are in 1+1 backup.
231For the fan frame.
Table 3-2 Slot layout with the NPU-50\50-E
SlotTypeRemarks
1 to 4FICInclude FICs and the other subcards
NOTE
Other subcards, including the 8-Channel CWDM Multiplexing/
Demultiplexing Physical Interface Card and Auxiliary Flexible
Interface Card, can be installed in any slot numbered 1 to 16.
Such as 32-Port E1 Physical Interface Card, 4-Port OC-3c/
STM-1c POS-SFP Physical Interface Card
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SlotTypeRemarks
13 to 16FICInclude FICs and the other subcards
3 CX600-X2-M16 Hardware Description
Such as 32-Port E1 Physical Interface Card, 4-Port OC-3c/
STM-1c POS-SFP Physical Interface Card
5 to 12Not
Include HICs, FICs and the other subcards
specifie
d
Table 3-3 Slot layout with the NPU-120\120-E
SlotTypeRemarks
1 and 2FICInclude FICs and the other subcards
Such as 32-Port E1 Physical Interface Card, 4-Port OC-3c/
STM-1c POS-SFP Physical Interface Card
15 to 16FICInclude FICs and the other subcards
Such as 32-Port E1 Physical Interface Card, 4-Port OC-3c/
STM-1c POS-SFP Physical Interface Card
3 to 14Not
Include HICs, FICs and the other subcards
specifie
d
NOTE
An FIC refers to a subcard on which every port works at a rate of lower than 1 Gbit/s. An HIC refers to a
subcard on which every port works at a rate of at least 1 Gbit/s.
If ten 10GE interfaces or less are used on an CX600-X2-M16, configuring them evenly on the left and right
sides of a frame is recommended.
For the CX600-X2-M16 that has the NPU-50\NPU50-E installed, 2-port 10GBase PICs cannot be installed
in both slot 5 and slot 12, and slots 1, 2, 3, 4, 13, 14, 15, and 16 support only PICs whose total bandwidth
is smaller than or equal to 2 Gbit/s; for the CX600-X2-M16 that has the NPU-120/NPU-120-E installed,
slots 1, 2, 15, and 16 support only PICs whose total bandwidth is smaller than or equal to 2 Gbit/s.
Board Working Modes Supported by the CX600-X2-M16
The CX600-X2-M16 supports the master/slave and load balancing working modes for NPUs.
lMaster/slave
– In master/slave mode, the master NPU forwards services of all subcards, and the slave
NPU is a hot standby backup. The slave NPU takes over the services only when the
master NPU is unavailable, for example, when the master NPU fails or restarts. This
implementation prevents service interruptions when the master NPU is unavailable.
– In master/slave mode, each NPU manages all the sixteen subcards, PICs 1 to 16 in
Figure 3-5.
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lLoad balancing
– In load balancing mode, two NPUs forward services of their managed subcards
respectively to load balance the total traffic of all subcards. If one NPU is unavailable,
the other NPU will not take over services on the unavailable NPU. Therefore, the load
balancing mode is less reliable than the master/slave mode.
– In load balancing mode, each NPU manages only the subcards in the same half board
cage as the NPU itself. For example, in the board layout shown in Figure 3-5, NPU 17
manages PICs 1 to 8, and NPU 18 manages PICs 9 to 16. If NPU 18 is unavailable,
NPU 17 will not take over the services of PICs 9 to 16.
Figure 3-5 CX600-X2-M8 board layout
Numbering Rule of Service Interfaces on the CX600-X2-M16
Numbering Rule of Service Interfaces on the CX600-X2-M16
Service interfaces on the CX600-X2-M16 are numbered in the following format: 0/subcard slot
number/interface number on the subcard.
lA subcard slot number is the number of the slot where an interface's subcard resides. A
subcard slot number ranges from 1 to 16.
lAn interface number on the subcard starts with 0, and its maximum value is determined by
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the actual number of interfaces on the subcard.
Table 3-4 Slot layout of the CX600-X2-M16
SlotNumberRemarks
1 to 1616For PICs, which include HICs, FICs and the other subcards.
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ItemDescription
Storage temperature-40°C to +70°C (-40°F to 158°F)
Ambient
operating
relative
humidity
Storage relative humidity0% RH to 95% RH, noncondensing
Long-term working altitudeLower than 3000 m (9842.4 ft)
Storage altitudeLower than 5000 m (16404 ft)
NOTE
In the dimensions shown in the table, the width (W) does not include the rack-mounting ears.
Temperature and humidity are measured at 1.5 m (4.92 ft.) above the floor and 0.4 m (1.31 ft.) in front of the
cabinet. There should be no protection board on the front or back of the cabinet.
"Short-term" refers to continuous working time that does not exceed 96 hours and accumulated working time
per year that does not exceed 15 days. If the working time exceeds either of these values, it is considered "longterm".
Product Specifications
Long-term5% RH to 85% RH, noncondensing
Short-term5% RH to 95% RH, noncondensing
Table 3-6 System configuration list of the CX600-X2-M16
ItemDescription
Processing unitMain frequency: 1.2 GHz
SDRAM2 GB
Flash16 MB
eUSB2 GB
Switching capacityNPU-120\120-E:
l 240 Gbit/s (1:1)
l 480 Gbit/s (Turbo)
NPU-50\50-E:
l 100 Gbit/s (1:1)
l 200 Gbit/s (Turbo)
Interface capacityNPU-120\120-E: 120 Gbit/s
NPU-50\50-E: 50 Gbit/s
Number of NPU slots2
Number of PIC slots16
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TypeBoard NameSilkscreen Print
3 CX600-X2-M16 Hardware Description
PIC8-Port CWDM Multiplexer/
Demultiplexer
(1471/1491/1511/1531/1551/1571/159
1/1611 nm) Physical Interface Card
(PIC)
FICAuxiliary Flexible Interface Card
with 4-Port 100Base-RJ45
(FIC,Supporting 1588v2)
3.2 Power Supply System
3.2.1 Architecture of the Power Supply System
The device supports DC power input of -48 V DC or -60 V DC and AC power input of 110 V
AC or 220 V AC.
The device is powered by two PSUs, which work in 1+1 backup mode. When one PSU fails or
is removed, the other one can still supply adequate power for the device. The PSUs are installed
in the two top slots of the chassis and supply power for the MPUs, NPU, PICs, and fan module.
MD8A-CWDM
AUX/4xFE-A
The following measures are taken to ensure that the PSUs can supply stable and safe power for
the system:
lProtection against output overcurrent
lProtection against output overvoltage
lProtection against input undervoltage
lProtection against overtemperature
lProtection against short circuit
lAlarm generation
3.2.2 Diagram of the Power Supply Architecture
A power supply system consists of two power modules working in 1+1 redundancy mode.
Figure 3-6 shows the diagram of the power supply architecture. Each power module provides
a 48 V power input and a 3.3 V power input to the boards. The two 48 V power inputs are
integrated in the boards and the two 3.3 V power inputs are integrated in the backplane and then
input to the boards. Each power module provides a 48 V power input to the fans. The two 48 V
power inputs are integrated in the backplane and then input to the fans.
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Table 3-8 Description of the indicators on the PSUs
Indicator NameDescription
OUTIf the indicator is steady green, the PSUs is working properly and
supply stable power.
When the indicator is steady red, the hardware of the PSUs fails or
the device is not supplied with power ranging from -48 V or -60 V.
When the indicator is off, the PSUs are switched off or the hardware
of the PSUs is faulty.
INWhen the indicator is steady green, the power input is normal.
When the indicator is off, the device is not supplied with power
ranging from -48 V or -60 V.
lNotes on DC power monitoring:
3 CX600-X2-M16 Hardware Description
The DC power monitoring channel can implement real-time monitoring on power supply.
In addition, the DC power monitoring channel allows you to query the manufacturing ID,
input voltage, and temperature of the PSUs in real time, and supports real-time reporting
of power supply alarms.
lNotes on the configuration of DC power cables:
You do not need to connect protection ground cables to the PSUs, but the protection ground
cable for the chassis must be properly grounded. DC power cables include a -48 V power
cable and a return (RTN) ground cable. The required cable length depends on the distance
between the cabinet and the power distribution cabinet for the device. The DC power cables
need to be prepared according to the required lengths on site. For details about DC power
cables, see 5.1.1 DC Power Cables.
3.2.4 AC Power Supply System
The device has two AC rectifier modules working in 1+1 backup mode. Figure 3-8 shows the
outline of an AC rectifier module.
Figure 3-8 Outline of an AC rectifier module
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Table 3-9 Parameters of the AC rectifier modules
ItemParameter
Dimensions (H x W x D)41.5 mm x 183.8 mm x 201 mm (1.63 in. x
Weight2.5 kg (5.51 lb)
Rated voltage110 V AC / 220 V AC
Input voltage range90 V AC — 290 V AC
Maximum input current10 A
Maximum output power1600 W
Table 3-10 Indicator Description
3 CX600-X2-M16 Hardware Description
7.24 in. x 7.91 in.)
Indicat
or
Name
Input
indicato
r
Output
indicato
r
Fault
indicato
r
ColorNorm
al
Statu
s
GreenOnOffIf the indicator is on, the input is normal. If the
GreenOnOffIf the indicator is on, the output is normal. If the
RedOffBlinkThe indicator is blinking in the following
Abnor
mal
Status
BlinkOvervoltage or undervoltage is input.
OnThe indicator is blinking in the following
Remarks
indicator is off, the input is abnormal.
The panel switch is Off.
indicator off, the output is abnormal.
situations:
The communication is interrupted for 60s or longer.
The power is input unevenly.
The AC power module is reset remotely.
situations:
Protection against overtemperature is performed.
Fans become faulty.
3.3 Heat Dissipation System
The heat dissipation system is responsible for the heat dissipation of the entire device. Heat
generated by the boards is dissipated through the heat dissipation system. In this manner, the
temperatures of the components on the boards are controlled within a normal range, enabling
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the boards to work properly. The heat dissipation system is composed of a fan frame, an air
intake vent, an air exhaust vent, and an air channel. All the fans in the fan frame work
simultaneously, and their rotation speeds can be adjusted by area. When one fan fails, the heat
dissipation system can still allow the device to work at an ambient temperature of 40°C (104°
F) for a short period. The temperature sensors, which are located on the air exhaust vent and
boards, monitor the temperatures of the components on the boards and adjust the fan rotation
speeds according to the commands delivered by the MPU to control the board temperatures.
3.3.1 Air Channel
The CX600-X2-M16 dissipates heat by blowing air from left to right. Figure 3-9 shows the air
flow in the CX600-X2-M16.
Figure 3-9 Air flow in the CX600-X2-M16
3 CX600-X2-M16 Hardware Description
3.3.2 Fan Module
The air intake vent of the CX600-X2-M16 is 8 U ( 311.15 mm or 12.25 in. )high and 220 mm
( 8.66 in. ) deep.
There are six fans in the fan frame of the CX600-X2-M16. When one fan fails, the device can
still work at the ambient temperature of 40°C ( 104°F ) for a short period.
The rotation speeds of the fans can be adjusted based on the device temperature.
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3.4 Data Plane
3.4.1 Introduction to the Data Plane
NPUs are key parts on the CX600-X2-M16 and are responsible for network processing and data
exchange between PICs and NPUs.
The procedure for data processing is as follows:
1.The IP packets sent from PICs and NPU converge at a convergence module.
2.The NP processes the IP packets.
3.The TM module performs traffic management on the IP packets.
Figure 3-11 Data plane architecture of the CX600-X2-M16
3 CX600-X2-M16 Hardware Description
3.4.2 Introduction to the NPU-50
NOTE
NPU-50 must not be installed in an outdoor cabinet.
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The NPU-50 has a 50-Gbit/s forwarding capability in each direction, and all subcards exchange
data through the NPU-50.
You can install two NPUs on the chassis of the CX600-X2-M16. The two NPUs can work in 1
+1 or 1:1 mode. In 1+1 mode, the NPU-50 is connected to the eight PICs. In 1:1 mode, the
NPU-120-E is connected to the sixteen PICs.
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Through the management channels between MPUs and NPUs, the MPUs can manage
NPUs and associated subcards, and transmit routing protocol data.
lData forwarding plane
The NPUs are responsible for service processing in the entire system, and are connected
to all subcards through data channels.
Table 3-13 NPU parameters
ItemDescriptionRemarks
Forwarding capability50 Gbit/s (bidirectional)-
Figure 3-12 Appearance of the NPU panel
3 CX600-X2-M16 Hardware Description
1. STAT indicator
2. ACT indicator3. OFL button
Table 3-14 describes the buttons and indicators on the NPU panel.
Table 3-14 Description of the buttons and indicators on the NPU panel
Indicator/
Description
Button
STAT
indicator
If the indicator is steady green, the NPU is working properly.
If the indicator is steady red, the hardware of the NPU is faulty.
If the indicator blinks green, the NPU is being registered.
If the indicator is off, the NPU is not powered on or fails to be registered.
ACT
indicator
OFL
indicator
If the indicator is steady green, the NPU is in the master state.
If the indicator is off, the NPU is in the slave state or fails to be registered.
If the indicator is steady red, the NPU is powered off and can be safely removed.
If the indicator is off, the NPU is working properly.
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.
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Specifications
Table 3-15 lists the specifications of the NPU.
Table 3-15 Specifications of the NPU
ItemSpecification
3 CX600-X2-M16 Hardware Description
Silkscreen of the board
name
Typical power
consumption
Heat dissipation535.3 BTU/hour
Weight2.6 kg (5.73 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 VersionV800R005C01
NPU-50
165 W
3.4.3 Introduction to the NPU-50-E
NOTE
NPU-50-E can be installed in an outdoor cabinet.
The NPU-50-E has a 50-Gbit/s forwarding capability in each direction, and all subcards switch
data through the NPU-50-E.
You can install two NPUs on the chassis of the CX600-X2-M16. The two NPUs can work in 1
+1 or 1:1 mode. In 1+1 mode, the NPU-50-E is connected to the eight PICs. In 1:1 mode, the
NPU-120-E is connected to the sixteen PICs.
The NPU-50-E consists of the following planes:
lControl and management plane
Through the management channels between MPUs and NPUs, the MPUs can manage
NPUs and associated subcards, and transmit routing protocol data.
lData forwarding plane
The NPUs are responsible for service processing in the entire system, and are connected
to all subcards through data channels.
Table 3-16 NPU parameters
ItemDescriptionRemarks
Forwarding capability50 Gbit/s (bidirectional)-
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Figure 3-13 Appearance of the NPU panel
1. STAT indicator2. ACT indicator3. OFL button
Table 3-17 describes the buttons and indicators on the NPU panel.
Table 3-17 Description of the buttons and indicators on the NPU panel
Specifications
Indicator/
Button
STAT
indicator
ACT
indicator
OFL
indicator
OFL
button
Description
If the indicator is steady green, the NPU is working properly.
If the indicator is steady red, the hardware of the NPU is faulty.
If the indicator blinks green, theNPU is being registered.
If the indicator is off, the NPU is not powered on or fails to be registered.
If the indicator is steady green, the NPU is in the master state.
If the indicator is off, it indicates that the NPU is in the slave state or fails to be
registered.
If the indicator is steady red, the NPU is powered off and can be safely removed.
If the indicator is off, the NPU is working properly.
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.
Table 3-18 lists the specifications of the NPU.
Table 3-18 Specifications of the NPU
ItemSpecification
Silkscreen of the board
NPU-50-E
name
Typical power
165 W
consumption
Heat dissipation535.3 BTU/hour
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ItemSpecification
Weight2.6 kg ( 5.73 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 VersionV800R005C01
3.4.4 Introduction to the NPU-120
NOTE
NPU-120 must not be installed in an outdoor cabinet.
The NPU-120 has a 120-Gbit/s forwarding capability in each direction, and all subcards
exchange data through the NPU-120.
You can install two NPUs on the chassis of the CX600-X2-M16. The two NPUs can work in 1
+1 or 1:1 mode. In 1+1 mode, the NPU-120 is connected to the eight PICs. In 1:1 mode, the
NPU-120-E is connected to the sixteen PICs.
3 CX600-X2-M16 Hardware Description
The NPU-120 consists of the following planes:
lControl and management plane
Through the management channels between MPUs and NPUs, the MPUs can manage
NPUs and associated subcards, and transmit routing protocol data.
lData forwarding plane
The NPUs are responsible for service processing in the entire system, and are connected
to all subcards through data channels.
Table 3-19 NPU parameters
ItemDescriptionRemarks
Forwarding capability120 Gbit/s (bidirectional)-
Figure 3-14 Appearance of the NPU panel
1. STAT indicator
2. ACT indicator3. OFL button
Table 3-20 describes the buttons and indicators on the NPU panel.
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Table 3-20 Description of the buttons and indicators on the NPU panel
3 CX600-X2-M16 Hardware Description
Specifications
Indicator/
Button
STAT
indicator
ACT
indicator
OFL
indicator
OFL
button
Description
If the indicator is steady green, the NPU is working properly.
If the indicator is steady red, the hardware of the NPU is faulty.
If the indicator blinks green, theNPU is being registered.
If the indicator is off, the NPU is not powered on or fails to be registered.
If the indicator is steady green, the NPU is in the master state.
If the indicator is off, the NPU is in the slave state or fails to be registered.
If the indicator is steady red, the NPU is powered off and can be safely removed.
If the indicator is off, the NPU is working properly.
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.
Table 3-21 lists the specifications of the NPU.
Table 3-21 Specifications of the NPU
ItemSpecification
Silkscreen of the board
name
Typical power
consumption
Heat dissipation648.9 BTU/hour
Weight2.62 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 VersionV800R005C01
NPU-120-E
200 W
3.4.5 Introduction to the NPU-120-E
NOTE
NPU-120-E can be installed in an outdoor cabinet.
The NPU-120-E has a 120-Gbit/s forwarding capability in each direction, and all subcards switch
data through the NPU-120-E.
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You can install two NPUs on the chassis of the CX600-X2-M16. The two NPUs can work in 1
+1 or 1:1 mode. In 1+1 mode, the NPU-120-E is connected to the eight PICs. In 1:1 mode, the
NPU-120-E is connected to the sixteen PICs.
The NPU-120-E consists of the following planes:
lControl and management plane
Through the management channels between MPUs and NPUs, the MPUs can manage
NPUs and associated subcards, and transmit routing protocol data.
lData forwarding plane
The NPUs are responsible for service processing in the entire system, and are connected
to all subcards through data channels.
Table 3-22 NPU parameters
ItemDescriptionRemarks
Forwarding capability120 Gbit/s-
Figure 3-15 Appearance of the NPU panel
1. STAT indicator
2. ACT indicator3.OFL indicator4. OFL button
Table 3-23 describes the buttons and indicators on the NPU panel.
Table 3-23 Description of the buttons and indicators on the NPU panel
Indicator/
Description
Button
STAT
indicator
If the indicator is steady green, the NPU is working properly.
If the indicator is steady red, the hardware of the NPU is faulty.
If the indicator blinks green, theNPU is being registered.
If the indicator is off, the NPU is not powered on or fails to be registered.
ACT
indicator
OFL
indicator
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If the indicator is steady green, the NPU is in the master state.
If the indicator is off, the NPU is in the slave state or fails to be registered.
If the indicator is steady red, the NPU is powered off and can be safely removed.
If the indicator is off, the NPU is working properly.
HUAWEI CX600-X1-M/CX600-X2-M Series Metro
Services Platform
Hardware Description
3 CX600-X2-M16 Hardware Description
Specifications
Indicator/
Button
OFL
button
Table 3-24 lists the specifications of the NPU.
Table 3-24 Specifications of the NPU
ItemSpecification
Silkscreen of the board
name
Typical power
consumption
Heat dissipation648.9 BTU/hour
Description
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.
NPU-120-E
200 W
Weight2.62 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 VersionV800R005C01
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.
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HUAWEI CX600-X1-M/CX600-X2-M Series Metro
Services Platform
Hardware Description
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:
lSystem 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.
lSystem clock unit
3 CX600-X2-M16 Hardware Description
3.5.2 MPUK
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.
lSystem 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.
Figure 3-16 shows the MPUK panel.
Figure 3-16 Appearance of the MPU panel
1. STAT indicator
5. ETH LINK indicator6. AUX interface7. Console interface8. CLK clock interface
9. TOD date interface10. RS-485 interface11. RESET button
2. ACT indicator3. ETH ACT indicator4. ETH interface
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