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Hardware Description (V100 and V200)
CloudEngine 9800, 8800, 7800, 6800, and 5800 Series Switches

This document provides an overall description of the CE5800&6800&7800&8800 series switches hardware, helping you obtain detailed information about each chassis, power module, fan module, card, cable, and optical module.

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CE7855-32Q-EI

CE7855-32Q-EI

Version Mapping

Table 2-347 lists the mappings between the CE7855-32Q-EI and software versions.

Table 2-347 Version mapping

Device Series

Sub-series

Device Model

Short Name

Supported Version

CE7800

CE7855

CE7855-32Q-EI

CE7855EI

V200R001C00~V200R019C10

NOTE:

This model is not supported in V200R005C20.

Appearance and Structure

The figures in this document are for reference only.

Figure 2-161 CE7855-32Q-EI

1

Power supply slot 1

Applicable power modules:

2

Power supply slot 1

Applicable power modules:

3

Fan slot 1

Applicable fan modules:

4

Fan slot 2

Applicable fan modules:

5

Console port

6

ETH management port (RJ45)

7
Barcode label
NOTE:

This label is drawable, and you can pull it outward to view the ESN barcode and MAC address of the switch.

This label is drawable, and you can pull it outward to view the ESN barcode and MAC address of the switch.

8

USB port

9

Thirty-two 40GE QSFP+ Ethernet optical ports

NOTE:

A 40GE QSFP+ port can be split into four 10GE ports.

In V200R005C00 and later versions, a QSA convertor can be installed on a 40GE interface that has been split. Installing a medium whose rate is 10 Gbit/s on the QSA convertor makes a 40GE interface function as a 10GE interface. Only the first split interface works and other three split interfaces are unavailable. If a QSA convertor is installed on an interface that is not split or a medium whose rate is not 10 Gbit/s is installed on the QSA convertor on an interface that has been split, the interface enters the Down(Transceiver type mismatch) status.

Applicable modules and cables:

10

Three port-side mounting holes for mounting brackets

11

Four middle mounting holes for mounting brackets

12

Four power-supply-side mounting holes for mounting brackets

13

Ground screw

-

-

Slot

  • Power supply slot

    The CloudEngine 8800, 7800, 6800, and 5800 series switches (except the CE8850-64CQ-EI) have two power supply slots, in which power modules can be installed to provide power to the chassis. A chassis can have one or two power modules. Double power modules can provide higher reliability.

    The CloudEngine 8800, 7800, 6800, and 5800 series switches (except the CE8850-64CQ-EI) support double power modules (1+1 backup).
    • When both power modules are working properly, they equally provide power for a chassis.
    • When one power module fails, the other one provides all power required for a chassis.
    All power modules are hot swappable.

  • Fan slot

    The CloudEngine 8800, 7800, 6800, and 5800 series switches (except the CE8850-64CQ-EI, CE6863-48S6CQ, CE6881-48S6CQ, CE6820-48S6CQ, CE6863-48S6CQ-K, CE6881-48S6CQ-K, CE6881E-48S6CQ and CE6857-48S6CQ-EI) have two fan slots, in which fan modules can be installed to cool the chassis, ensuring efficient heat dissipation and system stability. A chassis must have two working fan modules to ensure normal operating.

    All fan modules are hot swappable.

Airflow

The cooling systems of the CloudEngine 8800, 7800, 6800, and 5800 series switches have front-to-back or back-to-front airflow depending on the airflow direction of the power modules and fan modules used. The airflow direction of the power modules and fan modules required on the CloudEngine 8800, 7800, 6800, and 5800 series switches depends on how the switches are installed in cabinets. Typically, cabinets in a data center have cold air flowing in from the front and hot air exhausted from the back. If CloudEngine 8800, 7800, 6800, and 5800 series switches are installed with the power supply side facing the front, you are advised to use fan modules and power modules with front-to-back airflow in the switches.
  • Front-to-back airflow: The power modules and fan modules using front-to-back airflow are marked or . Air flows into the chassis from the power supply side and flows out from the port side, as shown in Figure 2-162 (CE5800 as an example).
  • Back-to-front airflow: The power modules and fan modules using back-to-front airflow are marked or . Air flows into the chassis from the port side and flows out from the power supply side, as shown in Figure 2-163 (CE5800 as an example).

  • When the power module and fan module use forcible heat dissipation, they must use the same airflow method. For example, if the power module with back-to-front airflow is used, the fan module with back-to-front airflow must be used.

Figure 2-162 Front-to-back airflow (air flows out from the port side)
Figure 2-163 Back-to-front airflow (air flows in from the port side)

Indicators

Indicators on the CE7855-32Q-EI are the same as those on the CE7850-32Q-EI. The CE7850-32Q-EI is used as an example here to describe the indicators.

Ports

40GE QSFP+ Ethernet Optical Port

A 40GE QSFP+ Ethernet optical port receives and sends services at the rate of 40 Gbit/s. If a 40GE QSFP+ Ethernet optical port is split into four 10GE ports, it must use 1-to-4 QSFP+ optical modules and optical fibers or 1-to-4 QSFP+ cables. Table 2-348 describes the attributes of a 40GE QSFP+ Ethernet optical port.
Table 2-348 Attributes of a 40GE QSFP+ Ethernet optical port

Attribute

Description

Connector type

LC/MPO

Optical port attributes

Depending on the module or cable in use

Standards compliance

IEEE802.3ba

Working mode

Full-duplex

Console Port

The console port is connected to a console for onsite configuration. The port must use a console cable. Table 2-349 describes the attributes of the console port.
Table 2-349 Attributes of the console port

Attribute

Description

Connector type

RJ45

Standards compliance

RS232

Working mode

Duplex Universal Asynchronous Receiver/Transmitter (UART)

Baud rate

9600 bit/s to 115200 bit/s

Default value: 9600 bit/s

ETH Management Port (RJ45)

The ETH management port (RJ45) of a switch is connected to the network port of a configuration terminal or network management workstation to set up the onsite or remote configuration environment. The ETH management port (RJ45) uses a Category 5 or higher category cable. Table 2-350 describes the attributes of the ETH management port (RJ45).
Table 2-350 Attributes of the ETH management port (RJ45)

Attribute

Description

Connector type

RJ45

Standards compliance

IEEE802.3ab

Working mode

Supported rate: 10/100/1000 Mbit/s auto-sensing

Full-duplex

Maximum transmission distance

100 m

USB Port

A USB flash drive can be connected to the USB port for log backup, system software backup and uploading, or USB-based deployment.

Specifications

Table 2-351 Technical specifications

Item

Description

Physical specifications
  • Dimensions (W x D x H): 442.0 mm x 607.0 mm x 43.6 mm (17.4 in. x 23.9 in. x 1.72 in.)
  • Weight (with two power modules and two fan modules, calculated based on the heaviest model if multiple models are supported): 11.2 kg (24.69 lb)

Environment parameters

Temperature
  • Operating temperature: 0°C to 40°C (32°F to 104°F) at altitude of 0-1800 m (0-5906 ft.)
    NOTE:

    When the altitude is 1800-5000 m (5096-16404 ft.), the highest operating temperature reduces by 1°C (1.8°F) every time the altitude increases by 220 m (722 ft.).

  • Storage temperature: -40°C to +70°C (-40°F to +158°F)

Relative humidity

5% RH to 95% RH, noncondensing

Altitude

< 5000 m (16404 ft.)

Noise (sound pressure, 27°C)
  • Back-to-front airflow: < 55 dBA
  • Front-to-back airflow: < 54 dBA

Power specifications

Power source type

AC

AC power input
  • Rated input voltage range: 100 V AC to 240 V AC, 50/60 Hz
  • Maximum input voltage range: 90 V AC to 290 V AC, 47 Hz to 63 Hz

DC power input
  • Rated voltage range: -48 V DC to -60 V DC
  • Maximum voltage range: -38.4 V DC to -72 V DC

High-voltage DC power input

Not supported

Rated input current
  • 600 W AC power (PAC-600WA series): 9 A (100 V AC to 240 V AC)
  • 600 W DC power (PDC600S12 series): 20A (-48 V DC to -60 V DC)

Chassis power consumption

Maximum power consumption

444 W

Typical power consumption

262 W (100% throughput, QSFP+ cables on 32 ports, double power modules)

Chassis heat dissipation

Maximum heat dissipation

1515 BTU/hr

Typical heat dissipation

895 BTU/hr (100% throughput, QSFP+ cables on 32 ports, double power modules)

Surge protection

AC Power module: 6 kV in common mode and 6 kV in differential mode

Heat dissipation

Heat dissipation mode

Air cooling

Airflow

Front-to-back or back-to-front, depending on the fan modules and power modules

Reliability and availability

Power module backup

1+1 backup

Fan module backup
1+1 backup not supported
NOTE:

CE7800 chassis uses two fan modules, with each fan module containing two fans. The four fans in the chassis work in 3+1 backup mode.

Hot swap

Supported by all power modules and fan modules

Mean time between failures (MTBF)

49.81 years

Mean time to repair (MTTR)

1.81 hours

Availability

0.99999584354

Technical specifications

Processor

1.5 GHz, quad-core

DRAM Memory

4 GB

NOR Flash

16 MB

NAND Flash

1 GB

Stack

Service port supporting the stack function

40GE optical ports

Certification
  • Safety standards compliance
  • EMC standards compliance
  • Environmental standards compliance

Ordering Information

Ordering information is subject to change without notice in the case of product upgrades. Ordering information provided in this manual is for reference only. To obtain latest ordering information, contact Huawei switch distributors or local Huawei representative office.

Table 2-352 provides the ordering information.

Table 2-352 Ordering information

Part Number

Part Model

Part Description

02350SQX

CE7855-32Q-EI

CE7855-32Q-EI Switch (32-Port 40GE QSFP+, Without Fan Box and Power Module)

02350SBG

CE7855-EI-F-B0A

CE7855-32Q-EI Switch (32-Port 40GE QSFP+, 2*AC Power Module, 2*FAN Box, Port-side Exhaust)

02350SBH

CE7855-EI-B-B0A

CE7855-32Q-EI Switch (32-Port 40GE QSFP+, 2*AC Power Module, 2*FAN Box, Port-side Intake)
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Updated: 2020-12-24

Document ID: EDOC1000019246

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