q-Tech QSW-6900-56LF Series Installation and operating manual

Installation Manual
0. Preface 1
www.qtech.ru
QSW-6900-56LF Series Switches
Hardware Installation and Reference
Guide
QSW-6900-56LF

Installation Manual
0. Preface 2
www.qtech.ru
Copyright Statement
QTECH ©2020
QTECH reserves all copyrights of this document. Any reproduction, excerption, backup,
modification, transmission, translation or commercial use of this document or any portion of this
document, in any form or by any means, without the prior written consent of QTECH is
prohibited.
Exemption Statement
This document is provided “as is”. The contents of this document are subject to change without
any notice. Please obtain the latest information through the QTECH website. QTECH endeavors
to ensure content accuracy and will not shoulder any responsibility for losses and damages
caused due to content omissions, inaccuracies or errors.

Installation Manual
0. Preface 3
www.qtech.ru
PREFACE
Thank you for using our switches. This guide will help you install and use the switches.
Scope
This manual describes the functions and physical features of the switches, and presents the
installation procedure, troubleshooting procedure, technical specifications, and specifications
and usages rules of cables and connectors. It is intended for the users that have some experience
in installing and maintaining network hardware and want to learn the above information. At the
same time, it is assumed that the users of this switch are already familiar with the related terms
and concepts of Ethernet.
Obtaining Technical Assistance
❖QTECH Website: https://www.qtech.ru
❖Technical Support Website: https://helpdesk.qtech.ru
Related Documents
Documents
Description
Configuration Guide
Describes network protocols and related mechanisms that
supported by the product, with configuration examples.
Command Reference
Describes the related configuration commands, including
command modes, parameter descriptions, usage guides, and
related examples.
Symbol Conventions
Means reader take note. Notes contain helpful suggestions or references.
Means reader be careful. In this situation, you might do something that could result in
equipment damage or loss of data.

Installation Manual
1. Product Overview 4
www.qtech.ru
1PRODUCT OVERVIEW
QSW-6900-56LF switches are data center oriented high density 10G access switches, providing
10G/100G access, low latency, and complete data center features. QSW-6900-56LF switches,
with up to 48 10G ports and 8 100G ports, can be used to compose a high-performance and high-
reliability data center network.
The QSW-6900-56LF Series Switches:
Model
100G
QSFP28
Ethernet
Port
10G SFP+
Ethernet
Port
10GBase-T
Ethernet
Port
Extension
Module
Slot
Redundant
Fan
Redundant
Power
Supply
QSW-
6900-
56LF
8
48
N/A
N/A
3+1
1+1
An SFP+ port supports 10GBase-R and can be downward compatible with 1000Base-X.
A QSFP28 port supports both 100G/40G mode and 4x25G/4x10G mode.
Specifications
Model
QSW-6900-56LF
CPU
Quad-core processer, 1.2GHz
BOOT ROM
16MB
FLASH Memory
8GB
SDRAM
DDR4 4GB (Compatibility: 8GB)
Extension
Module Slot
Unsupported
Extension
Module
Unsupported
Fan Slot
4 (support 3+1 redundancy, configure at least 3 fan modules in one switch)
Fan Module
QSW-M-6900LF-FAN

Installation Manual
1. Product Overview 5
www.qtech.ru
Power Supply
Slot
2 (support 1+1 redundancy)
Power Module
QSW-M-6900LF-PWR
Power Supply
Input
AC input
Rated voltage range: 100V AC to
240V AC
Maximum voltage range: 90V AC to
264V AC
Frequency: 50/60 Hz
Rated current: 3.5A to 7.2A
High voltage direct current (HVDC)
input:
Input voltage range: 192V DC to 288V
DC
Input current range: 3.6A
Power
Consumption
Less than 300 W
Optical Module
The supported modules update at any time, contact QTECH for details.
SFP+ Port
Supported
QSFP28 Port
Supported
FC Port
Unsupported
10GBASE-T Port
Unsupported
Temperature
Warning
Support temperature warning and over-temperature protection.
EMC Standards
GB9254-2008 CLASS A
Safety
Standards
GB4943-2011
Working
Temperature
0°C to 45°C (32°F to 113°F)
Storage
Temperature
-40°C to 70°C (-40°F to 158°F)
Working
Humidity
10% to 90% RH (non-condensing)
Weight
Net weight: 8 kg (including 4 fan modules and 2 power modules)

Installation Manual
1. Product Overview 6
www.qtech.ru
Dimensions
(L x W x H)
442 mm x 387 mm x 44 mm, 1RU
QSW-6900-56LF switch is a class A product. In a domestic environment, this product may
cause radio interference in which case the user may be required to take adequate measures.
The 10G/100G Ethernet port of the QSW-6900-56LF switch supports DAC.
Product Appearance
The hardware of the QSW-6900-56LF includes the chassis, the power supply system and the heat
dissipation system.
❖The power supply system: Provides two power supply slots, which support 1+1 power supply
redundancy. It is recommended users configure power supply redundancy.
❖The heat dissipation system: Provides four fan module slots, which support 3+1 fan
redundancy. It is recommended users configure all fans redundancy.
Figure 1-1 Appearance of the QSW-6900-56LF
Front Panel
Figure 1-2 Front Panel of the QSW-6900-56LF
Notes:
1. Switch status indicator
2. Switch locator indicator
4. SFP+ port status indicator
5. QSFP28 port

Installation Manual
1. Product Overview 7
www.qtech.ru
3. SFP+ port
6. QSFP28 port status indicator
The QSW-6900-56LF supports 100G QSFP28 module and 10G SFP+ module.
Back Panel
Figure 1-3 Back Panel of the QSW-6900-56LF
Notes:
1. Power supply module slot
2. Fan module slot
3. Locator indicator
4. MGMT port
5. USB 2.0 port
6. Grounding point
7. Asset label
8. Switch status indicator
9. Console port
Asset Management Label
The asset management label is next to the switch status indicator of the switch back panel. The
label is movable and can be withdrawn from the device. Users can mark the information such as
asset name, category, code and registration date on the label which helps to improve asset
management accuracy and efficiency.
Figure 1-4 Asset Management Label of the QSW-6900-56LF
External Ports
The QSW-6900-56LF provides the following ports:
❖Universal serial bus (USB) port: This port can connect with USB memory to save logs, host
versions, warnings and other diagnostic messages. Therefore, it is more convenient to
upgrade the software version of the switch on line and save the log information.

Installation Manual
1. Product Overview 8
www.qtech.ru
To protect the data and avoid device damage, use qualified USB flash disks of good brands.
At the same time, the local USB port is compatible with most of the USB controllers except
some USB flash disks.
QSW-6900-56LF series switches support debugging, configuration, maintenance,
management and host software uploading of Console ports.
❖Console port: Use RS-232 interface electrical level and standard RJ45 connector. This
interface is connected with the serial port of terminal PC to perform system debugging,
configuration, maintenance, management, and host software uploading.
❖MGMT port: This is an out-band Ethernet port, which uses standard RJ45 connector. This
interface is connected with Ethernet port of a PC to perform program downloading.
❖SFP+ port: There are 48 10G SFP+ ports, which support optical modules and DAC copper
cables (1000BASE-X compatible).
❖QSFP28 port: There are 8 100G QSFP28 ports, which support optical modules and DAC
copper cables. These ports can also work in 4x10G mode.
Indicator
Indicator
Panel
Identificati
on
Status
Meaning
Switch status
indicator
(Front panel/Back
panel)
Status
Off
The system is not powered up.
Solid red
One of the modules of the system fails.
There are less than 3 fans.
The internal or partial temperature exceeds
the warning working temperature, and the
switching service resets.
Blinking green.
The system is initializing.
Solid green
The system is operational.
Solid yellow
The temperature gets to the warning
threshold.
Only 3 fans are in the position.
One of the dual powers is not connected
with the AC power cord.
Switch locator
indicator
(Front panel/Back
panel)
ID
Off
Device location is disabled.
Solid blue
Device location is enabled.

Installation Manual
1. Product Overview 9
www.qtech.ru
MGMT port
indicator
MGMT
Off
The port is not connected.
Green
The port is connected at
10M/100M/1000Mbps.
Blinking
The port is transmitting or receiving data.
SFP+ port status
indicator
1F-48F
Off
The port is not connected.
Solid green
The port is connected at 10Gbps.
Blinking green
The port is transmitting or receiving data at
10Gbps.
QSFP28 port status
indicator
49F-56F
Off
The port is not connected.
Solid green
The port is connected at 40G/100Gbps.
Blinking green
The port is transmitting or receiving data at
40G/100Gbps.
Power Supply
The QSW-6900-56LF series switches support power supply the QSW-M-6900LF-PWR. The smart
power supply module supports power management, and the host can read input power, input
current, and temperature in real time. The power supply module supports hot swapping.
The QSW-6900-56LF series switches support 1+1 power supply redundancy. To improve the
stability and reliability of the entire system, it is recommended to configure 1+1 power
supply redundancy. When the two power supply modules work normally, the switch is in the
status of current sharing.
It requires at least one power supply module to work normally. Filler panels need to be
installed in the unoccupied power supply module slots to ensure ventilation and heat
dissipation and avoid dusts.
Heat Dissipation
The working temperature of the QSW-6900-56LF switches is 0°C to 45°C, or 32°F to 113°F, and
the heat dissipation design needs to ensure the stability, safety and maintainability in such
environment. The QSW-6900-56LF series switches adopt fan ventilation and forced convection
to ensure the device can work normally in specified environment. Dust the device every three
months to avoid blocking the ventilation openings.
The QSW-6900-56LF supports QSW-M-6900LF-FAN and provides fan speed regulation, fan
failure warning, and fan hot swapping.
Figure 1-5 Ventilation and Heat Dissipation of the QSW-6900-56LF

Installation Manual
1. Product Overview 10
www.qtech.ru
Figure 1-6 Ventilation and Heat Dissipation of the QSW-6900-56LF
Leave sufficient space in the front and at the back of the chassis (at least 20 cm) for
ventilation.
It requires at least three fan modules to work normally. Filler panels need to be installed in
the unoccupied fan module slots to ensure ventilation and heat dissipation and avoid dusts.
Power modules and fan modules with different air direction cannot be used together.