Bdcom S2528-B Assembly instructions

S2528-B Hardware Installation Manual

Table of Contents
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Table of Contents
Table of Contents..............................................................................................................................................I
Chapter 1 S2528-B Introduction................................................................................................................... 1
1.1 Appearance Description for Standard Configuration...................................................................1
1.2 S2528-B Systematic Characteristic Parameters......................................................................... 2
Chapter 2 Installation Preparation................................................................................................................ 4
2.1 Caution of Usage.............................................................................................................................. 4
2.2 Safety Advice.....................................................................................................................................4
2.2.1 Safety Principles....................................................................................................................4
2.2.2 Safety Notices........................................................................................................................4
2.2.3 Safety Principles for Live Working......................................................................................5
2.2.4 Electrostatic Discharge Damage Prevention.................................................................... 6
2.3 Requirements for Common Locations...........................................................................................6
2.3.1 Environment........................................................................................................................... 6
2.3.2 Location Configuration Prevention..................................................................................... 6
2.3.3 Cabinet Configuration........................................................................................................... 6
2.3.4 Power Requirements............................................................................................................ 7
2.4 Installation Tools and Device.......................................................................................................... 7
Chapter 3 Installing the S2528-B Switch..................................................................................................... 8
3.1 Installation Flow of S2528-B........................................................................................................... 8
3.2 Installing the Machine Box of the Switch...................................................................................... 8
3.2.1 Installing the Machine Box on the Desk.............................................................................8
3.2.2 Installing the Machine Box on the Cabinet........................................................................9
3.3 Connecting the Port..........................................................................................................................9
3.3.1 Connecting the Console Port...............................................................................................9
3.3.2 Connecting Gigabit Ethernet SFP Ports.......................................................................... 11
3.3.3 Connecting 1000M Ethernet Base-T ports...................................................................... 11

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3.4 Checking After Installation.............................................................................................................12
Chapter 4 Maintaining Switch..................................................................................................................... 14
4.1 Opening the Machine Box.............................................................................................................14
4.2 Closing the Machine Box...............................................................................................................15
Chapter 5 Hardware Fault Analysis............................................................................................................17
5.1 Fault Separation............................................................................................................................. 17
5.1.1 Faults Relative with Power and Cooling System........................................................... 17
5.1.2 Faults Relative with Port, Cable and Connection...........................................................17
5.2 Indicator Description...................................................................................................................... 17

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Chapter 1 S2528-B Introduction
The section describes the characteristics and parameters of S2528-B and gives an
overview of S2528-B.
1.1 Appearance Description for Standard Configuration
The built-in ports of S2528-B are: 24 gigabit Ethernet Base-T ports, 4 gigabit
Ethernet SFP ports and 1 Console port. See table 1-1.
Port
Attribute
Gigabit Ethernet port
Base-T port: 10/100/1000M auto-adaptation, MDI/MDIX
auto-identification, UTP (RJ45) port
Gigabit Ethernet optical port
Optical port: 100/1000M SFP port, Link/Act indicators
Console port
A rate of 9600bps, RJ45 interface
Table 1- 1 Attributes of the built-in port
Figure 1-1 Front template of the S2528-B switch
No.
Abbrev.
Name
Description
1
CONSOLE
Console port
Manages the switch locally.
2
SYS
System indicator
If the indicator is always on, the system
is being started.
If the indicator flickers, the system works
normally.
3
PWR
Power indicator
If the switch is powered on, the indicator
is on.
4
Link/ACT
LINK/ACT indicator of
each port
If the indicator is on in orange: 10/100M,
If the indicator is on in green: 1000M

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If the indicator is not on: no signal is
transmitted.
5
Reset
Reset switch
Return to the factory setting.
6
/
24 gigabit RJ45 ports
Forwards the 10/100M/1000M Ethernet
electric signals
7
/
4 SFP ports
Forwards 1000M Ethernet optical
signals.
Table 1- 2 Parts at the front template of the S2528-B switch
Besides, S2528-B has a grounding column and a power socket at its back.
Figure 1- 2 Back template of the S2528-B switch
No.
Abbrev.
Name
Description
1
/
Grounding column
The grounding must be fine.
2
/
AC power socket
100~240V AC
Table 1- 3 Parts at the back template of the S2528-B switch
1.2 S2528-B Systematic Characteristic Parameters
Protocol
standard
Supported
standard
IEEE 802.1d Spanning Tree Protocol
IEEE 802.1p Class of Service
IEEE 802.1q tagged VLAN
IEEE 802.3x Flow control
IEEE 802.3ad Link aggregation
IP routing protocol
standard
RFC 1058 RIP
RFC 1723 RIP v2

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Network
management
standard
RFC 1157 SNMP v1/v2
RFC 1213 MIB II
RFC 1757 RMON 1,2,3,9
Memory
Flash Memory: 16M Bytes
DDR3: 128M Bytes;
Standard
configuration
4 gigabit SFP ports
1 Console port
24 gigabit Base-T ports
Dimensions mm
(W×D×H)
440×232×44
Operating
temperature/
humidity
0℃～40℃; 10%～90% non-condensing
Storage
temperature/
humidity
-40℃～70℃; 5%～90% non-condensing
Power
characteristics
Input voltage: AC100～240V;
Input frequency: 50~60Hz;
Input current: 2A/12V
Power
consumption
24W

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Chapter 2 Installation Preparation
2.1 Caution of Usage
Similar to other electronic products, the semiconductor chip easily gets damaged if
you power on or off abruptly and frequently. To restart up the switch of S2528-B,
you have to open the power on-off after the power is cut down for three to five
seconds.
Avoid severe collision or falling down from the height to protect the parts in the
switch.
Do not insert the Ethernet plug into the console port (RJ45 8-line socket). Similarly,
do not insert the console cable into the console port (RJ45 8-line socket).
Note:
1) When you plug or dial the power line, keep the power line horizontal with the
power socket.
2) When the lifetime of our products ends, handle them according to national
laws and regulations, or send these products to our company for collective
processing.
2.2 Safety Advice
2.2.1 Safety Principles
Keep dustless and clean during or after the installation.
Put the cover at the safe place.
Put tools at the right place where they are not easily falling down.
Put on relatively tight clothes fasten the tie or scarf well and roll up the sleeve,
avoiding stumbling the machine box.
Put on the protective glasses if the environment may cause damage to your
eyes.
Avoid incorrect operations that may cause damage to human or devices.
2.2.2 Safety Notices
The safety notices mentioned here means that improper operation may lead to
body damage.

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Read the installation guide carefully before you operate the system.
Only professionals are allowed to install or replace the switch.
Pull out the AC power socket and close the direct-current power before
operating on the machine box or working beside the power source.
The final configuration of products must comply with relative national laws
and regulations.
2.2.3 Safety Principles for Live Working
When you work under electricity, following the following principles:
Put off ornaments, such as ring, necklace, watch and bracelet, before you
operate under live working. When metal articles connect the power to the
ground, short circuit happens and components may be damaged.
Pull out the AC power socket and close the direct-current power before
operating on the machine box or working beside the power source.
When the power is on, do not touch the power.
Correctly connect the device and the power socket.
Only professionals are allowed to operate and maintain the device.
Read the installation guide carefully before the system is powered on.
Note:
1) Check potential dangers, such as the humid floor, ungrounded extensible power
line and tatty power line.
2) Install the emergent on-off at the working room for turning off the power when
trouble happens.
3) Turn off the power on-off of the switch and plug off the power line before
installing or uninstalling the machine box or working beside the power.
4) Do not work alone if potential dangers exist.
5) Cut off the power before checkout.
6) If trouble happens, take the following measures:
A. Cut off the system's power.
B. Alarm.
C. Take proper measures to help persons who are hit by the disaster. Artificial
respiration is needed if necessary.
D. Seek for medical help, or judge the loss and seek for available help.

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2.2.4 Electrostatic Discharge Damage Prevention
Electrostatic discharge may damage devices and circuits. Improper treatment may
cause the switch to malfunction completely or discontinuously.
Move or locate the devices according to the measures of electrostatic discharge
prevention, ensuring the machine box connects the ground. Another measure is to
wear the static-proof hand ring. If there is no hand ring, use the metal clip with the
metal cable to clip the unpainted metal part of the machine box. In this case, the
static is discharged to the ground through the metal cable of the clip. You can also
discharge the static to the ground through your body.
2.3 Requirements for Common Locations
This part describes the requirements for the installation locations.
2.3.1 Environment
The switch can be installed on the desk or the cabinet. The location of the machine
box, cabinet planning and indoor cabling are very important for normal system’s
function. Short distance between devices, bad ventilation and untouchable control
plate will cause maintenance problems, systematic faulty and breakdown.
For location planning and device locating, refer to section 2.3.2 “Location
Configuration Prevention”.
2.3.2 Location Configuration Prevention
The following preventive measures assist you to design the proper environment for
the switch.
Make sure that the workshop is well-ventilated, the heat of electrical devices
is well-discharged and sufficient air circulation is provided for device cooling.
Avoid to damage devices by following the electrostatic discharge prevention
procedure.
Put the machine box at the place where cool air can blow off the heat inside
the machine box. Make sure the machine box is sealed because the opened
machine box will reverse the cool air flow.
2.3.3 Cabinet Configuration
The following content assists you to make a proper cabinet configuration:
Each device on the cabinet gives off heat when it runs. Therefore, the sealed
cabinet must have the heat-discharge outlet and the cooling fan. Do not put
the devices too close, avoiding bad ventilation.

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When you install the machine box at the open cabinet, prevent the frame of
the cabinet from blocking the airway of the machine box.
Ensure that nice ventilation is provided for the devices installed at the bottom
of the cabinet.
The clapboard separates exhaust gas and inflow air, and boost cool air to
flow in the machine box. The best location of the clapboard is decided by the
air flow mode in the machine box, which can be obtained through different
location tests.
2.3.4 Power Requirements
Make sure that the power supply has nice grounding and the power at the input
side of the switch is reliable. The voltage control can be installed if necessary. At
least a 240 V, 10A fuse or a breaker is provided in the phase line if you prepare the
short-circuit prevention measures for a building.
Caution:
If the power supply system does not have good grounding, or the input power
disturbs too much and excessive pulses exist, the error code rate of communication
devices increases and even the hardware system will be damaged.
2.4 Installation Tools and Device
The tools and devices to install the S2528-B switch are not provided by the
S2528-B switch. You yourself need to prepare them. The following are the tools and
devices needed for the typical installation of the S2528-B switch:
Screwdriver
Static armguard
Bolt
Ethernet cable
Other Ethernet terminal devices
Control terminal

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Chapter 3 Installing the S2528-B Switch
Caution:
Only professionals are allowed to install or replace the devices.
3.1 Installation Flow of S2528-B
3.2 Installing the Machine Box of the Switch
The installation of the machine box has two modes:
Installing the machine box on the desk
Installing the machine box on the cabinet
3.2.1 Installing the Machine Box on the Desk
The S2528-B switch can be directly put on the smooth and safe desk.
Note:
Do not put things weighing 4.5 kg or over 4.5 kg on the top of the switch.

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3.2.2 Installing the Machine Box on the Cabinet
The machine box of the switch is fixed on the cabinet through the brackets. When
you fix the brackets, the front template of the switch faces forward. The detailed
operations are shown in Figure 3-1.
Figure 3- 1 Fixing the machine box of the switch
After the brackets are installed, install the switch on the cabinet. See Figure 3-2.
Figure 3- 2: Installing the switch on the cabinet
3.3 Connecting the Port
3.3.1 Connecting the Console Port
The switch of S2528-B has a console port.
The rate of the console port is a value ranging from 1200bps to 115200bps. It has a
standard RJ45 plug. After you connect the console port to the serial port of PC
through a console cable, you can configure and monitor the switch of S2528-B by
running the terminal emulation software, such as super Windows terminal. The
cable is provided according to the host. The communication parameters of the
terminal serial port can be set to a rate of 9600bps, eight data bits, one stop bit, no
sum check bit and traffic control.
The RJ45 connector of the console port is shown in Figure 3-3. The RJ45 plug
corresponds to the RJ45 socket, whose pins can be aligned from left to right with
the value from 1 to 8.

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Figure 3- 3 RJ-45 connector of the console port
Figure 3-4: Connecting the console port of S2528-B with the computer
No.
Name
Remarks
1
CD
No connect
2
RXD
Input
3
DSR
No connect
4
TXD
Output
5
RTS
No connect
6
CTS
No connect
7
DTR
No connect
8
SG
GND
Table 3-1 Definition of the pins of the Console port
Note: The console port of the S2528-B switch does not support traffic control. Therefore, you
must set the option data traffic control to none when you configure the switch with the super
terminal. Otherwise, the single-pass problem will arise on the super terminal.
The cable is used to connect the console port of the S2528-B switch and the outside console
terminal device. One end of the console port is RJ45 8-core plug and the other end of the
console port is a 25-hole plug and a 9-hole plug. The RJ45 plug is put into the socket of the
console port on the S2528-B switch. DB25 and DB9 is alternative. RJ45 connects to DB9 in
the console port shown as below.

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Figure 3- 5 Cable connection at the console port
3.3.2 Connecting Gigabit Ethernet SFP Ports
The S2528-B switch has 4 gigabit SFP ports. Each port has a corresponding
indicator for showing their LINK/ACT state. If the indicator is always on, the port is
normally linked; if the indicator flickers, the data is forwarded through the port. In
use the SFP optical module can be connected to the SFP optical module and
connected to other Ethernet terminal devices through the optical cable.
Figure 3-6 Gigabit SFP ports connect to other Ethernet terminal devices
3.3.3 Connecting 1000M Ethernet Base-T ports
S2528-B provides 24 10/100/1000MRJ45 ports. Each port corresponds to one
LINK/ACT indicator. In use, the ports can connect other UT terminal devices
through the UTP port and the direct-through or cross network cable. The numbering
order of the pins in the UTP port is the same as the console port. See the following
figure:
Figure3-7 RJ-45 Connector of the console port

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Because 24 10/100/1000Base-T ports of S2528-B support the MDI/MDIX
self-identification of the cable, S2528-B can adopt five types of direct-through/cross
network cables when it connects other Ethernet terminals.
Figure 3-8 Connecting the 1000M Base-T port and other Ethernet terminals
No.
Pin name
Abbr.
Remarks
1
Sending the normal phase of the data
TXD1+
Output
2
Sending the paraphase of the data
TXD1-
Output
3
Receiving the normal phase of the data
RXD1+
Input
4
Sending the normal phase of the data
TXD2+
Output
5
Sending the paraphase of the data
TXD2-
Output
6
Receiving the normal phase of the data
RXD1-
Input
7
Receiving the normal phase of the data
RXD2+
Input
8
Sending the paraphase of the data
RXD1-
Input
Table 3- 2 Pins of gigabit RJ45
The direct-through or cross network cable has the function of auto-identification, so the five classes
of direct-through/cross network cables can be used to connect other Ethernet devices.
3.4 Checking After Installation
Before electrically starting up the switch, perform the following checkups after the
switch is installed:

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If the switch is installed on the cabinet, check whether the installation point
between the cabinet and the switch is strong. If the switch is installed on the
desk, check whether there is enough space for the switch to discharge its
heat and whether the desk is stable.
Check whether the connected power meets the power requirements of the
switch.
Check whether the grounding line is correctly connected.
Check whether the switch is correctly connected to other terminal devices.

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Chapter 4 Maintaining Switch
Caution:
1) Before opening the machine box, make sure that you have released the static
you carried and then turn off the power on-off of the switch. Before operating
any step in Appendix B, read the section “Safety Advice”.
2) Before performing operations beside the power source or on the machine box,
turn off the power on-off and plug out the power cable.
4.1 Opening the Machine Box
This section describes how to open the cover of the switch, required tools and
operation methods.
Caution:
When the power cable still connects the power supply, do not touch it.
When you open the cover the switch, you may use the following tools:
Crossed screwdriver
Static armguard
Perform the following steps to open the cover of the switch:
(1) Turn off the power on-off of the switch.
(2) Plug out all cables connected the back of the switch.
(3) Take out the bolt from the machine box with the screwdriver.
Note:
The machine box comprises of two parts: cover and bottom.
(4) Open the cover by holding two sides of the cover towards the direction of the
arrow key shown in the following figure:

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Figure 4-1 Opening the chassis of S2528-B
(5) When the cover is opened, put it aside. The mainboard of the system
appears.
Note:
After taking off the cover, put it horizontally and avoid it to be crushed or collided.
Otherwise, the machine box is hard to install.
4.2 Closing the Machine Box
The section mainly describes how to put the cover and close the machine box. Do
as follows:
(1) Put them well according to their locations and joint them together along their sides.
See the following figure.

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(2) When the cover and the bottom are closely tied, let the cover slide the slot of the
front template at the bottom.
(3) Nail the bolt and screw it tightly with the screwdriver.
(4) Reinstall the switch on the cabinet or the desk.
(5) Reconnect all cables of the switch.

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Chapter 5 Hardware Fault Analysis
The part describes how to remove the fault from the switch.
5.1 Fault Separation
The key for resolving the systematic faults is to separate the fault from the system.
You can compare what the system is doing with what the system should do to
detect the fault. You need to check the following subsystems:
Power and cooling systems—power and fan
Port, cable and connection—ports on the front template of the switch and the
cables connecting these ports
5.1.1 Faults Relative with Power and Cooling System
Do the following checkups to help remove the fault:
When the power on-off is at the “ON” location, check whether the fan works
normally. If the fan does not work well, check the fan.
The working temperature of the switch is from 0 to 40 Celsius degrees. If the
switch is too hot, check whether the air outlet and air inlet are clean and then
do relative operations in section 2.3 “Requirements for Common Locations”.
If the switch cannot be started and the PWR indicator is off, check the power.
5.1.2 Faults Relative with Port, Cable and Connection
Do the following checkups to help remove the fault:
If the port of the switch cannot be linked, check whether the cable is correctly
connected and whether the peer connection is normal.
If the power on-off is at the “ON” location, check the power source and the
power cable.
If the console port does not work after the system is started up, check
whether the console port is set to a baud rate of 9600 bps, eight data bits, no
sum check bit, one stop bit and no traffic control.
5.2 Indicator Description
The following table shows the indicators of the S2528-B switch and their
description: