CE7855-32Q-EI

CloudEngine 8800, 7800, 6800, and 5800 Series Switches Hardware Description (Versions earlier than V200R020C00)

This document provides an overall description of the CE5800&6800&7800&8800 series switches hardware that versions earlier than V200R020C00, helping you obtain detailed information about each chassis, power module, fan module, card, cable, and pluggable modules for ports.

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CE7855-32Q-EI

Version Mapping

Table 2-326 lists the mappings between the CE7855-32Q-EI and software versions.

Table 2-326 Version mapping

Device Series	Sub-series	Device Model	Short Name	Supported Version
CE7800	CE7855	CE7855-32Q-EI	CE7855EI	V200R001C00 to V200R019C10 NOTE: This model is not supported in V200R005C20.

Appearance and Structure

The figures in this document are for reference only.

Figure 2-154 CE7855-32Q-EI

1	Power supply slot 1 Applicable power modules: 600 W AC Power Module (PAC-600WA) 600 W DC Power Module (PDC600S12)	2	Power supply slot 1 Applicable power modules: 600 W AC Power Module (PAC-600WA) 600 W DC Power Module (PDC600S12)
3	Fan slot 1 Applicable fan modules: FAN-40HA series fan modules	4	Fan slot 2 Applicable fan modules: FAN-40HA series 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: 40GE optical module QSFP+ AOC cable (QSFP+ to QSFP+) QSFP+ AOC cable (QSFP+ to 4SFP+) QSFP+ high-speed cable (QSFP+ to 4SFP+) QSFP+ high-speed cable (QSFP+ to QSFP+)	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 2-155 (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 2-156 (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 2-155 Front-to-back airflow (air flows out from the port side)

Figure 2-156 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 2-327 describes the attributes of a 40GE QSFP+ Ethernet optical port.

Table 2-327 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 2-328 describes the attributes of the console port.

Table 2-328 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 2-329 describes the attributes of the ETH management port (RJ45).

Table 2-329 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 2-330 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
Chassis power consumption	Typical power consumption	262 W (100% throughput, QSFP+ cables on 32 ports, double power modules)
Chassis heat dissipation	Maximum heat dissipation	1515 BTU/hr
Chassis heat dissipation	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
Heat dissipation	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 2-331 provides the ordering information.

Table 2-331 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+, 2AC Power Module, 2FAN Box, Port-side Exhaust)
02350SBH	CE7855-EI-B-B0A	CE7855-32Q-EI Switch (32-Port 40GE QSFP+, 2AC Power Module, 2FAN Box, Port-side Intake)

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Updated: 2021-06-01

Document ID: EDOC1000019246

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