LE0DCMUA0000-Centralized Monitoring Unit

S9300X Series Switches Hardware Description

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Version Mapping

Table 7-65 Switch chassis and software versions matching the card

Card Name	S9300X Chassis
LE0DCMUA0000	S9310X chassis: supported in V200R010C00 and later versions S9300X-4, S9300X-8, and S9300X-12 chassis: not supported

Card Name

S9300X Chassis

LE0DCMUA0000

S9310X chassis: supported in V200R010C00 and later versions

S9300X-4, S9300X-8, and S9300X-12 chassis: not supported

Introduction

The LE0DCMUA0000 can be installed in:

Slots CMU1 and CMU2 in an S9310X chassis.

Figure 7-33 Appearance of the LE0DCMUA0000

Functions

The LE0DCMUA0000 consists of the following modules:

Device management module: sends interface control signals for device management.
Backplane interface module: provides management channels for power modules, fan modules, and communication channels between the active and standby LE0DCMUA0000 cards.

The LE0DCMUA0000 manages power modules and fan modules in a chassis. The LE0DCMUA0000 is hot swappable. Two LE0DCMUA0000 cards can be installed in a chassis to work in active/standby mode.

Fan module management

The LE0DCMUA0000 provides the following fan module management functions:

Fan module presence detection
Fan module registration management
Fan speed monitoring
Fan speed control
Management and report of fan module alarms
Query of fan module electronic labels

The LE0DCMUA0000 supports real-time fan module presence detection. Fan modules in the chassis register with the LE0DCMUA0000. After they register, the LE0DCMUA0000 obtains electronic labels of the fan modules and saves the electronic labels for users to query. Meanwhile, the LE0DCMUA0000 monitors the speed and alarms of the fan modules in real time.

When detecting an alarm about a fan module, the LE0DCMUA0000 reports the alarm to the MPU. When the alarm is cleared, the LE0DCMUA0000 reports alarm clearance to the MPU.

When the LE0DCMUA0000 receives a fan speed adjustment instruction from the MPU, it delivers the instruction to the fan modules. The fan modules then adjust their speed according to the instruction. If a chassis has no LE0DCMUA0000 installed, fans run at full speed.

Power module management

The LE0DCMUA0000 manages power modules in either of the following ways:

Uses the RS485 bus to provide the following functions:
- Power module presence detection
- Power module registration management
- Power module shutdown
- Voltage and current monitoring
- Management and report of power module alarms
- Query of power module electronic labels
Uses the I²C bus to provide the following functions:
- Power module presence detection
- Power module registration management
- Management and report of power module alarms
- Query of power module electronic labels

Only 1600 W DC power modules are managed using the I²C bus, and all the other power modules are managed using the RS485 bus.

The LE0DCMUA0000 supports real-time power module presence detection. Power modules in a chassis register with the LE0DCMUA0000. After they register, the LE0DCMUA0000 obtains electronic labels of the power modules and saves the electronic labels for users to query. Then the power modules are managed using the RS485 bus or I²C bus:

Using the RS485 bus:
The LE0DCMUA0000 queries the current and voltage of power modules in real-time.

When detecting an alarm about a power module, the LE0DCMUA0000 sends the alarm to the MPU. When the alarm is cleared, the LE0DCMUA0000 reports alarm clearance to the MPU.

When the switch is working in deep energy saving mode, the LE0DCMUA0000 automatically shuts down redundant power modules to save power. You can set the deep energy saving mode using the set power manage mode command.
Using the I²C bus:
When detecting an alarm about a power module, the LE0DCMUA0000 sends the alarm to the MPU. When the alarm is cleared, the LE0DCMUA0000 reports alarm clearance to the MPU.

Indicators and Ports

Figure 7-34 Indicators on the LE0DCMUA0000 panel

Table 7-66 Indicators on the LE0DCMUA0000 panel

Number	Indicator	Color	Description
1	RUN/ALM: running status indicator	Green	Slow blinking: The card software is running properly. Fast blinking: The card software is unregistered.
Red	Steady on: The card has failed and the fault requires manual intervention. Slow blinking: The switch is reporting an alarm. For example, a CMU, fan module, or power module on the switch fails. Fast blinking: The input power is insufficient.
2	ACT: active/standby status indicator	Green	Steady on: The card is the active CMU. Off: The card is the standby CMU.

Number

Indicator

Color

Description

RUN/ALM: running status indicator

Green

Slow blinking: The card software is running properly.

Fast blinking: The card software is unregistered.

Red

Steady on: The card has failed and the fault requires manual intervention.

Slow blinking: The switch is reporting an alarm. For example, a CMU, fan module, or power module on the switch fails.

Fast blinking: The input power is insufficient.

ACT: active/standby status indicator

Green

Steady on: The card is the active CMU.

Off: The card is the standby CMU.

Figure 7-35 Ports on the LE0DCMUA0000 panel

1	One RS485 port (reserved)
2	One MON port (reserved)

Specifications

Table 7-67 Specifications of the LE0DCMUA0000

Item	Description
Physical specifications	Dimensions (H x W x D): 19.8 mm x 112.9 mm x 412.7 mm (0.78 in. x 4.44 in. x 16.25 in.) Weight: 0.22 kg (0.49 lb) Maximum power consumption: 1 W

Ordering Information

Card ordering information is subject to updates with product version upgrades. The ordering information provided in this manual is for reference only. To obtain the latest ordering information, contact Huawei switch distributors or Huawei local office.

Table 7-68 Ordering information

Part Number	Card Description	Card Model
03020LCU	Centralized Monitoring Unit	LE0DCMUA0000 NOTE: After the display elabel command is executed, the manufactured model of the card is displayed as LE02CMUA.

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Updated: 2022-05-19

Document ID: EDOC1000138177

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