Ruijie RG-S1920 Series Installation and operating manual

Ruijie RG-S1920 Series Switches
Hardware Installation and Reference Guide V1.11

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Preface
Thank you for using our products. This manual will guide you through the installation of the device.
This manual describes the functional and physical features and provides the device installation steps, hardware
troubleshooting, module technical specifications, and specifications and usage guidelines for cables and connectors.
Audience
It is intended for the users who have some experience in installing and maintaining network hardware. At the same time, it
is assumed that the users are already familiar with the related terms and concepts.
Obtaining Technical Assistance
Ruijie Networks Website: https://www.ruijienetworks.com/
Technical Support Website: https://ruijienetworks.com/support
Case Portal: https://caseportal.ruijienetworks.com
Community: https://community.ruijienetworks.com
Technical Support Email: [email protected]
Skype: [email protected]
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
The symbols used in this document are described as below:
This symbol brings your attention to some helpful suggestions and references.
This symbol means that you must be extremely careful not to do some things that may damage the device or cause
data loss

Hardware Installation and Reference Guide
Product Overview
1Product Overview
Table 1-1 RG-S1920
Model
10/100 Base-T
Auto-sensing
Ethernet Port
10/100/1000
Base-T
Auto-sensing
Ethernet Port
1000Base-X SFP
Port
Console Port
RG-S1920-18GT2SFP
\
18
2
1
RG-S1920-24GT4SFP/2GT
\
26
4 (Ports 25-26 are
Combo ports)
1
The SPF ports are downward compatible with 100Base-FX. The application of 100Base-FX requires 100M SFP
modules.
1000Base-T is compatible with 100Base-TX and 10Base-T in the downlink direction.
1.1 RG-S1920-18GT2SFP
Technical Specifications
Model
RG-S1920-18GT2SFP
CPU
Built-in CPU, single-core processor, 500MHz
Flash Memory
32MB
SDRAM
DDRIII 256MB
Optical Module
For details, see Appendix B. (Copper cables are not supported.)
The supported module type may change at any time. Consult us for the latest information.
SFP Port
Supports 1000Base-X and 100Base-FX modules.
Power Supply
AC input
Rated voltage range: 100V to 240V
Maximum voltage range: 90V to 264V
Frequency: 50/60 Hz
Rated current: 0.6A
Power cord specification: 10A power cord
EEE
Supported
PoE
Not supported
Power
Consumption
< 17 W
Operating
Temperature
-5°C to 55°C (23°F to 131°F)
Storage
Temperature
-40°C to 70°C (-40°F to 158°F)

Hardware Installation and Reference Guide
Product Overview
Operating Humidity
10% to 90% RH
Storage Humidity
5% to 95% RH
Fan
Not supported
Temperature
Warning
Not supported
Collecting
Information of SFP
Modules
Not supported
EMC Standards
GB9254-2008
Security Standards
GB4943-2011
Input Leakage
Current
≤1.5mA
Dimensions
(W x D x H)
440 mm x 189 mm x 43.6 mm
Weight
2.4 kg (with package)
The RG-S1920-18GT2SFP 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 label indicates that you should not touch the device when it operates in environments of more than 50°C
(122°F).
Product Appearance
On the front panel, the RG-S1920-18GT2SFP Ethernet switch provides 18 10/100/1000Base-T Ethernet ports, 2 SFP
ports and 1 Console port. On the back panel, it provides AC power ports.
Figure 1-1 Appearance of RG-S1920-18GT2SFP
Front Panel
Figure 1-2 Front Panel of RG-S1920-18GT2SFP

Hardware Installation and Reference Guide
Product Overview
Note
1. System status LED
2. Console port
3. 10/100/1000Base-T auto-sensing Ethernet port
4. Copper port status LED
5. Copper port status LED
6. 10/100/1000Base-T auto-sensing Ethernet port
7. SFP port status LED
8. 1000Base-X SFP port
Back Panel
Figure 1-3 Back Panel of RG-S1920-18GT2SFP
Note
1. Grounding pole
2. Vent
3. Power cord retention clip
4. AC power port
Heat Dissipation
The RG-S1920-18GT2SFP adopts natural heat dissipation, thereby ensuring normal function of the device in the specified
environment. 10 cm distance space should be reserved at both sides and the back plane of the cabinet to allow air
circulation. It is recommended to clean the device once every 3 months to avoid dust from blocking vents.
LEDs
LED
Panel Identification
State
Meaning
Off
The switch is not receiving power.
Blinking green
The system is being initialized.
Continuous blinking indicates errors.
System status LED
Status
Solid green
The switch is operational.
Off
The port is not connected.
1000Mbps RJ-45 port
status LED
1-18
Solid green
The port is connected at 10/100/1000 Mbps.

Hardware Installation and Reference Guide
Product Overview
Blinking green
The port is receiving or transmitting traffic at
10/100/1000 Mbps.
Off
The port is not connected.
Solid green
The port is connected at 100/1000 Mbps.
1000Mbps SFP port
status LED
19F-20F
Blinking green
The port is receiving or transmitting traffic at
100/1000 Mbps.
1.2 RG-S1920-24GT4SFP/2GT
Technical Specifications
Model
RG-S1920-24GT4SFP/2GT
CPU
Built-in CPU, single-core processor, 500MHz
Flash Memory
32MB
SDRAM
DDRIII 256MB
Optical Module
For details, see Appendix B. (Copper cables are not supported.)
The supported module type may change at any time. Consult us for the latest information.
SFP Port
Supports 1000Base-X and 100Base-FX modules.
Power Supply
AC input
Rated voltage range: 100 V to 240 V
Maximum voltage range: 90 V to 264 V
Frequency: 50/60 Hz
Rated current: 0.6 A
Power cord specification: 10 A power cord
EEE
Supported
PoE
Not supported
Power
Consumption
< 22W
Operating
Temperature
-5°C to 55°C (23°F to 131°F)
Storage
Temperature
-40°C to 70°C (-40°F to 158°F)
Operating Humidity
10% to 90% RH
Storage Humidity
5% to 95% RH
Fan
Not supported
Temperature
Warning
Not supported
Collecting
Not supported

Hardware Installation and Reference Guide
Product Overview
Information of SFP
Modules
EMC Standards
GB9254-2008
Security Standards
GB4943-2011
Input Leakage
Current
≤1.5 mA
Dimensions
(W x D x H)
440 mm x 189 mm x 43.6 mm
Weight
2.4 kg (with package)
The RG-S1920-24GT4SFP/2GT 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 label indicates that you should not touch the device when it operates in environments of more than 50°C
(122°F).
Product Appearance
On the front panel, the RG-S1920-24GT4SFP/2GT Ethernet switch provides 24 10/100/1000Base-T Ethernet ports, 2
1000M Combo ports, 2 1000M SFP ports and 1 Console port. On the back panel, it provides AC power ports.
Figure 1-4 Appearance of RG-S1920-24GT4SFP/2GT
Front Panel
Figure 1-5 Front Panel of RG-S1920-24GT4SFP/2GT
Note
1. System status LED
2. Console port
3. 10/100/1000Base-T auto-sensing Ethernet port
4. Copper port status LED
5. Copper port status LED
6. 10/100/1000Base-T auto-sensing Ethernet port
7. SFP port status LED
8. 1000Base-X SFP port

Hardware Installation and Reference Guide
Product Overview
Back Panel
Figure 1-6 Back Panel of RG-S1920-24GT4SFP/2GT
Note
1. Grounding pole
2. Vent
3. Power cord retention clip
4. AC power port
Heat Dissipation
The RG-S1920-24GT4SFP/2GT adopts natural heat dissipation, thereby ensuring normal function of the device in the
specified environment. 10 cm distance space should be reserved at both sides and the back plane of the cabinet to allow
air circulation. It is recommended to clean the device once every 3 months to avoid dust from blocking vents.
LEDs
LED
Panel Identification
State
Meaning
Off
The switch is not receiving power.
Blinking green
The system is being initialized.
Continuous blinking indicates errors.
System status LED
Status
Solid green
The switch is operational.
Off
The port is not connected.
Solid green
The port is connected at 10/100/1000 Mbps.
1000Mbps RJ-45 port
status LED
1-26
Blinking green
The port is receiving or transmitting traffic at
10/100/1000 Mbps.
Off
The port is not connected.
Solid green
The port is connected at 100/1000 Mbps.
1000Mbps SFP port
status LED
25F-28F
Blinking green
The port is receiving or transmitting traffic at
100/1000 Mbps.

Hardware Installation and Reference Guide
Preparation before Installation
2Preparation before Installation
2.1 Safety Suggestions
To avoid personal injury and equipment damage, please carefully read the safety suggestions before you install the
RG-S1920 series switch.
The following safety suggestions do not cover all possible dangers.
2.1.1 Installation
Keep the chassis clean and free from any dust.
Do not place the equipment in a walking area.
Do not wear loose clothes or accessories that may be hooked or caught by the device during installation and
maintenance.
Turn off all power supplies and remove the power sockets and cables before installing or uninstalling the device.
2.1.2 Movement
Do not frequently move the device.
When moving the device, note the balance and avoid hurting legs and feet or straining the back.
Before moving the device, turn off all power supplies and dismantle all power modules.
2.1.3 Electricity
Observe local regulations and specifications when performing electric operations. Relevant operators must be
qualified.
Before installing the device, carefully check any potential danger in the surroundings, such as ungrounded power
supply, and damp/wet ground or floor.
Before installing the device, find out the location of the emergency power supply switch in the room. First cut off the
power supply in the case of an accident.
Try to avoid maintaining the switch that is powered-on alone.
Be sure to make a careful check before you shut down the power supply.
Do not place the equipment in a damp location. Do not let any liquid enter the chassis.
Any nonstandard and inaccurate electric operation may cause an accident such as fire or electrical shock, thus
causing severe even fatal damages to human bodies and equipment.
Direct or indirect touch through a wet object on high-voltage and mains supply may bring a fatal danger.
If a power supply system is equipped with a leakage protector (also referred to as "leakage current switch" or
"leakage current breaker"), the rated leakage action current of each leakage protector is greater than twice of the
theoretical maximum leakage current of all the power supplies in the system. For example, if a system is equipped
with 20 identical power supplies, the leakage current of each power supply is equal to or less than 1.5mA, and the

Hardware Installation and Reference Guide
Preparation before Installation
leakage current of the system totals 30mA. A leakage protector with 30mA rated action current supports less than 10
power supplies (that is, Action current of the leakage protector/2/Maximum leakage current of each power supply
=30/2/1.5=10). In other words, the leakage protector with 30mA rated action current supports no more than 10 power
supplies. In this case, the 20 power supplies in the system require at least 2 leakage protectors with 30mA rated
action current and each leakage protector supports 10 power supplies. If power supplies in a system differ in models,
the rated leakage action current of each leakage protector divided by two is greater than the sum of maximum
leakage current of all the power supplies. The rated leakage non-action current of a leakage protector shall be 50%
of the leakage action current. Take a leakage protector with 30mA rated leakage action current as an example. The
rated leakage non-action current shall be 15mA. When the leakage current is below 15mA, the protector shall not act.
Otherwise, misoperation may easily occur due to high sensitivity and thus the leakage protector trips, devices are
powered off, and services are interrupted.
To guarantee personal safety, the rated leakage action current of each leakage protector in the system must be
equal to or less than 30mA (human body safety current is 30mA). When twice of the total leakage current of the
system is greater than 30mA, the system must be equipped with two or more leakage protectors.
For the leakage current value of each power supply model, see the power supply model parameter table in Chapter
1.
2.1.4 Static Discharge Damage Prevention
To prevent damage from static electricity, pay attention to the following:
Proper grounding of grounding screws on the back panel of the device. Use of a three-wire single-phase socket with
protective earth wire (PE) as the AC power socket.
Indoor dust prevention
Proper humidity conditions
2.1.5 Laser
The RG-S1920 series switch supports varying models of optical modules sold on the market which are Class I laser
products. Improper use of optical modules may cause damage. Therefore, pay attention to the following when you use
them:
When a fiber transceiver works, ensure that the port has been connected with an optical fiber or is covered with a
dust cap, to keep out dust and avoid burning your eyes.
When the optical module is working, do not pull out the fiber cable and stare into the transceiver interface or you may
hurt your eyes.
Do not stare into any optical port under any circumstances, as this may cause permanent damage to your eyes.
2.2 Installation Site Requirements
To ensure the normal working and a prolonged durable life of the equipment, the installation site must meet the following
requirements.

Hardware Installation and Reference Guide
Preparation before Installation
2.2.1 Ventilation
For the RG-S1920, a sufficient space (at least 10 cm distances from both sides and the back plane of the cabinet) should
be reserved at the ventilation openings to ensure the normal ventilation. After various cables have been connected, they
should be arranged into bundles or placed on the cabling rack to avoid blocking the air inlets. It is recommended to clean
the switch at regular intervals (like once every 3 months). Especially, avoid dust from blocking the screen mesh on the
back of the cabinet.
2.2.2 Temperature and Humidity
To ensure the normal operation and prolong the service life of RG-S1920 series switch, you should keep proper
temperature and humidity in the equipment room.
If the equipment room has temperature and humidity that do not meet the requirements for a long time, the equipment
may be damaged.
In an environment with high relative humidity, the insulating material may have bad insulation or even leak electricity.
Sometimes the materials may suffer from mechanical performance change and metallic parts may get rusted.
In an environment with low relative humidity, however, the insulating strip may dry and shrink. Static electricity may
occur easily and endanger the circuit on the equipment.
In an environment with high temperature, the equipment is subject to even greater harm, as its performance may
degrade significantly and various hardware faults may occur.
Therefore, the ambient temperature and humidity of the RG-S1920 series must meet the requirements listed in Table 2-1:
Table 2-1 Temperature and Humidity Requirements of the RG-S1920 Series Switch
Temperature
Relative Humidity
-5ºC to 55ºC (23°F to 131°F)
10% to 90%
The requirements for the sampling site of the temperature and humidity in the operating environment of the device
are as follows:
There is no protective plate at the front or back of the equipment rack.
The vertical height is 1.5 m above the floor.
The distance from the front panel of the equipment is 0.4 m.
2.2.3 Cleanness
Dust poses a severe threat to the running of the equipment. The indoor dust falling on the equipment may be adhered by
the static electricity, causing bad contact of the metallic joint. Such electrostatic adherence may occur more easily when
the relative humidity is low, not only affecting the useful life of the equipment, but also causing communication faults.
Table 2-2 shows the requirements for the dust content and granularity in the equipment room.
Table 2-2 Requirements for the Dust Content and Granularity in the Equipment Room
Dust
Unit
Density
Diameter ≥0.5 μm
Particles/m3
≤3.5 x 106
Diameter ≥5 μm
Particles/m3
≤3 x 104

Hardware Installation and Reference Guide
Preparation before Installation
Apart from dust, the salt, acid and sulfide in the air in the equipment room must also meet strict requirements, as such
poisonous substances may accelerate the corrosion of the metal and the aging of some parts. The equipment room
should be protected from the intrusion of harmful gases such as sulfur dioxide, sulfured hydrogen, nitrogen dioxide, and
chlorine), whose requirements are listed in Table 2-3.
Table 2-3 Requirements for Harmful Gases in the Equipment Room
Gas
Average (mg/m3)
Maximum (mg/m3)
SO2
0.3
1.0
H2S
0.1
0.5
NO2
0.5
1.0
Cl2
0.1
0.3
Both average and maximum value are measured for a week. The switch cannot be placed in the environment with
the maximum density for over 30 minutes every day.
2.2.4 Grounding
A good grounding system is the basis for the stable and reliable operation of the RG-S1920 series switch. It is the chief
condition to prevent lightning stroke and resist interference. Please carefully check the grounding conditions on the
installation site according to the grounding requirements, and perform grounding operations properly as required.
Effective grounding of the switch is an important guarantee for lightning protection and interference resistance.
Therefore, connect the grounding line of the switch properly.
Safety Grounding
The equipment using AC power supply must be grounded by using the yellow/green safety grounding cable. Otherwise,
when the insulating resistance decreases the power supply and the enclosure in the equipment, electric shock may occur.
The building must provide protective grounding connection to ensure that the device is connected to the protection
location.
The installation and maintenance personnel must check whether the A.C. socket is well connected to the protection
location of the building, if not, they should use a protective grounding wire to connect the grounding end of the A.C.
socket to the building's protection location.
The power supply socket must be installed in a place that is near to the device and where users can operate the
device easily.
Before the installation of the device, make sure that ground connection is connected at first and disconnected finally.
The sectional area of the protective grounding wire should be at least 0.75 mm2(18 AWG).
Use the 3-core power supply line. The sectional area of each pin should be at least 0.75 mm2or 18 AWG.
Lightning Grounding
The lightning protection system of a facility is an independent system that consists of the lightning rod, download
conductor and the connector to the grounding system, which usually shares the power reference ground and yellow/green
safety cable ground. The lightning discharge ground is for the facility only, irrelevant to the equipment.
EMC Grounding

Hardware Installation and Reference Guide
Preparation before Installation
The grounding required for EMC design includes shielding ground, filter ground, noise and interference suppression, and
level reference. All the above constitute the comprehensive grounding requirements. The resistance of earth wires should
be less than 1 ohm. The RG-S1920 series switch back plane is reserved with one grounding pole, as shown in Figure 2-1.
Figure 2-1 Grounding of RG-S1920
2.2.5 Lightning Resistance
When the AC power cable is imported outdoors and directly connected to the power port of the RG-S1920 series switch,
lightning line bank should be adopted to prevent the switch from being hit by lightning shocks. Usage of the lightning line
bank: Connect the mains supply AC cable to the lightning line bank. Then, connect the switch to the lightning line bank.
This can help to prevent the current of high-voltage lightning from passing the switch directly through the mains supply
cable to a certain extent.
The lightning line banks are not provided and should be purchased by users as required.
For the usage of lightning line banks, refer to their related manuals.
2.2.6 EMI
Electro-Magnetic Interference (EMI), from either outside or inside the equipment or application system, affects the system
in the conductive ways such as capacitive coupling, inductive coupling, and electromagnetic radiation.
There are two types of electromagnetic interference: radiated interference and conducted interference, depending on the
type of the transmission path.
When the energy, often RF energy, from a component arrives at a sensitive component via the space, the energy is
known as radiated interference. The interference source can be either a part of the interfered system or a completely
electrically isolated unit. Conducted interference results from the electromagnetic wire or signal cable connection between
the source and the sensitive component, along which cable the interference conducts from one unit to another. Conducted
interference often affects the power supply of the equipment, but can be controlled by a filter. Radiated interference may
affect any signal path in the equipment and is difficult to shield.
For the AC power supply system TN, single-phase three-core power socket with protective earthing conductors (PE)
should be adopted to effectively filter out interference from the power grid through the filtering circuit.
The grounding device of the switch must not be used as the grounding device of the electrical equipment or
anti-lightning grounding device. In addition, the grounding device of the switch must be deployed far away from the
grounding device of the electrical equipment and anti-lightning grounding device.
Keep the equipment away from high-power radio transmitter, radar transmitting station, and high-frequency
large-current device.
Measures must be taken to shield static electricity.

Hardware Installation and Reference Guide
Preparation before Installation
Interface cables should be laid inside the equipment room. Outdoor cabling is prohibited, avoiding damages to
device signal interfaces caused by over-voltage or over-current of lightning.
2.3 Requirements of Installation Tools
Table 2-4 List of Installation Tools
Common Tools
Phillips screwdriver, flathead screwdriver, related electric cables and optical cables, bolts, diagonal
pliers, straps
Special Tools
Anti-static tools
Meters
Multimeter
The tool kit is customer-supplied.

Hardware Installation and Reference Guide
Product Installation
3Product Installation
Please ensure that you have carefully read Chapter 2.
Make sure that the requirements set forth in Chapter 2 have been met.
3.1 Installation Flowchart
3.2 Confirmations before Installation
Before installation, please confirm the following points:
Whether ventilation requirements are met for the switch
Whether the requirements of temperature and humidity are met for the switch
Whether power cables are already laid out and whether the requirements of electrical current are met
Whether related network adaption lines are already laid out
3.3 Installing the RG-S1920
Precautions
During installation, note the following points:

Hardware Installation and Reference Guide
Product Installation
Connect the power cables of different colors to the corresponding grounding posts.
Ensure that the interface of the power supply cable is well connected to the power interface of the device. The power
cables must be protected using power cable retention clips after they are connected to the device.
Do not place any articles on the RG-S1920 series switch.
Reserve a spacing of at least 10 cm around the chassis for good ventilation. Do not stack the devices.
The switch should be located at places free from the large power radio launch pad, radar launch pad, and
high-frequency large-current devices. If necessary, electromagnetic shielding should be adopted. For example, use
interface cables to shield cables.
100-meter network cables should be laid inside the equipment room and outdoor cabling of such cables is prohibited.
If outdoor cabling is necessary, take relevant measures for lightning protection.
3.3.1 Mounting the Switch to a Standard 19-inch Rack
The RG-S1920 series switches follow the EIA standard dimensions and can be installed in 19-inch distribution cabinets.
Attach the mounting brackets to the switch with the supplied screws, as shown in Figure 3-1 .
Figure 3-1 Attaching the Mounting Bracket to the Switch (RG-S1920-18GT2SFP and RG-S1920-24GT4SFP/2GT)
Align the mounting holes in the mounting bracket with the mounting holes in the rack, as shown in Figure 3-2.
Figure 3-2 Aligning the Mounting Holes (RG-S1920-18GT2SFP and RG-S1920-24GT4SFP/2GT)
Use the supplied M6 screws and cage nuts to securely attach the mounting brackets to the rack, as shown in Figure 3-3.
Figure 3-3 Attaching the Mounting Brackets to the Rack (RG-S1920-18GT2SFP and RG-S1920-24GT4SFP/2GT)

Hardware Installation and Reference Guide
Product Installation
3.3.2 Mounting the Switch on the Wall
The RG-S1920 series switch can be mounted on the wall, as shown in the following figures.
Attach the mounting brackets to the switch with the supplied screws, as shown in Figure 3-4.
Figure 3-4 Attaching the Mounting Brackets to the Switch for Wall-Mounting (RG-S1920-18GT2SFP and
RG-S1920-24GT4SFP/2GT)
Use the expansion screws to securely attach the mounting brackets on the wall, as shown in Figure 3-5.
Figure 3-5 Attaching the Switch on the Wall (RG-S1920-18GT2SFP and RG-S1920-24GT4SFP/2GT)
SUITABLE FOR MOUNTING ON CONCRETE OR OTHER NON-COMBUSTIBLE SURFACE ONLY.
3.3.3 Mounting the Switch on a Table
Attach the four rubber feet to the recessed areas on the bottom of the switch, as shown in Figure 3-6.
Figure 3-6 Attaching the Rubber Feet to the Recessed Areas

Hardware Installation and Reference Guide
Product Installation
Place the switch on the table, as shown in Figure 3-7.
Figure 3-7 Mounting the Switch on the Table
The device must be installed and operated in the place that can restrict its movement.
3.4 Checking after Installation
Before checking the installation, switch off the power supply so as to avoid any personal injury or damage to the
component due to connection errors.
Check that the ground line is connected.
Check that the cables and power input cables are correctly connected.
Check that all interface cables are laid out inside the equipment room. In the case of external cabling, check that the
lightning resistance socket or network interface lightning protector is connected.
Check that sufficient airflow is available around the device (over 10 cm)

Hardware Installation and Reference Guide
System Debugging
4System Debugging
4.1 Establishing the Debugging Environment
Establishing the Debugging Environment
Connect the PC to the console port of the switch through the console cable, as shown in Figure 4-1.
Figure 4-1 Schematic Diagram of the Configuration Environment
Connecting the Console Cable
Step 1: Connect the end of the console cable with DB-9 jack to the serial port of the PC.
Step 2: Connect the end of the console cable with RJ45 to the console port of the switch.
Setting HeperTerminal Parameters
Step 1: Start the PC and run the terminal simulation program on the PC, such as Terminal on Windows 3.1 or
HyperTerminal on Windows 95/98/NT/2000/XP.
Step 2: Set terminal parameters. The parameters are as follows: baud rate 9600, data bit 8, parity check none, stop
bit 1, and flow control as none.
Choose Setup>Program>Attachment >Communication> Hyper Terminal.
Choose Cancel, the interface as shown in Figure 4-2 is displayed.
Figure 4-2