Black Box LGB5124A-R2 User manual

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QUICK INSTALLATION GUIDE
SFP GIGABIT
MANAGED
SWITCH ECO
LGB5124A-R2, LGB5128A-R2
+ +
13
24685 7911
10 12 14 16
13 15 2017 19
LINK/ACT
CONSOLE
RST
AC INPUT: 100-240 VAC
ALM
SYS
PWR DC
PWR AC
18
CONSOLE
21
RTN -48V
+
28-PORT GbE
MANAGED
SWITCH
25 26 27 28
22 23 2324 24
21 22

2
TABLE OF CONTENTS
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1. INTRODUCTION............................................................................................................................................................................. 3
1.1 Over view ....................................................................................................................................................................................................3
1.2 Front View of the Switch..........................................................................................................................................................................3
1.3 Rear View of the Switch ...........................................................................................................................................................................3
1.4 LED Descriptions ......................................................................................................................................................................................4
1.5 Reset Button .............................................................................................................................................................................................6
2. INSTALLING THE SWITCH ........................................................................................................................................................... 7
2.1 What’s Included ........................................................................................................................................................................................7
2.2 Mounting the Switch in a 19-inch Rack..................................................................................................................................................7
2.3 Mounting the Switch on a Desk or Shelf................................................................................................................................................8
2.4 Connecting the AC Power Cord ..............................................................................................................................................................9
2.5 Connecting the DC Power Cord ..............................................................................................................................................................9
2.6 Installing SFP/SFP+ Modules ...............................................................................................................................................................10
3. INITIAL CONFIGURATION OF THE SWITCH ............................................................................................................................. 11
3.1 Initial Switch Configuration Using Web Browsers...............................................................................................................................11
3.2 Initial Switch Configuration Procedure ................................................................................................................................................11
4. TROUBLESHOOTING................................................................................................................................................................... 13
5. DISCLAIMER/TRADEMARKS ..................................................................................................................................................... 14
5.1 Disclaimer ...............................................................................................................................................................................................14
5.2 Trademarks Used in this Manual ..........................................................................................................................................................14
NOTES:
Default IP address of the switch: 192.168.1.1
Default Subnet Mask of switch: 255.255.255.0
Default Username of the switch: admin
Default Password of the switch: NONE

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CHAPTER 1: INTRODUCTION
1.1 OVERVIEW
This user guide describes how to install, configure, and troubleshoot the SFP Managed Switch Eco, part numbers LGB5124A-R2
and LGB5128A-R2. By reading this user guide, users can perform the following tasks:
Check the switch status via LEDs
Reset the switch or to restore the switch to factory defaults
Install the switch
Use a Web browser to initially configure the switch
Troubleshoot the switch
1.2 FRONT VIEW OF THE SWITCH
!
100 to 240 VAC
power input
AC power
LED
DC power
LED
100/1000
SFP ports
100/1000 RJ-45/SFP
combo ports
Console
port
48 VDC
power input
Reset
button
Alarm
LED
System
LED
Port Status
LEDs
1G/10G
SFP+ ports
FIGURE 1-1. FRONT PANEL OF THE SWITCH
1.3 REAR VIEW OF THE SWITCH
FIGURE 1-2. BACK PANEL OF THE SWITCH

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CHAPTER 1: INTRODUCTION
1.4 LED DESCRIPTIONS
The LEDs on the front panel provide users with switch status checking and monitoring. There are two types of LEDs as follows:
AC/DC Power LED: Indicates if the switch is powered up correctly or not.
System LED: Indicates if the system is ready or not.
Alarm LED: Indicates if the system is normal or not.
Port Status LEDs: Indicates the current status of each port. Users can check these LEDs to understand the port status.
The following tables detail the functions and descriptions of various LED indicators.
TABLE 1-1. POWER LED
LED COLOR STATE DESCRIPTION
AC Power Green ON The switch is powered ON correctly
OFF The switch is not receiving power from power1
DC Power Green ON The switch is powered ON correctly
OFF The switch is not receiving power from power2
TABLE 1-2. SYSTEM LED
LED COLOR STATE DESCRIPTION
System Green
ON The switch is ready and running correctly
OFF The switch is not ready or failed
Blinking The switch is booting
TABLE 1-3. ALARM LED
LED COLOR STATE DESCRIPTION
Alarm Red ON An abnormal state, such as temperature, voltage or fan speed, has been detected in the switch
OFF The system is normal

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CHAPTER 1: INTRODUCTION
TABLE 1-4. PORT STATUS LEDS
LED COLOR STATE DESCRIPTION
RJ-45 Ports
Green ON The port is enabled and has established a link to the connected device, and the connection speed
is 1000 Mbps.
Green Blinking The port is transmitting/receiving packets, and the connection speed is 1000 Mbps.
Amber ON The port is enabled and established a link to connected device, and the connection speed
is 10/100 Mbps.
Amber Blinking The port is transmitting/receiving packets, and the connection speed is 10/100 Mbps.
—OFF The port has no active network cable connected, or it is not established a link to connected device.
Otherwise, the port may have been disabled through the switch user interface.
SFP Ports
Green ON The port is enabled and established a link to connected device, and the connection speed
is 1000 Mbps.
Green Blinking The port is transmitting/receiving packets, and the connection speed is 1000 Mbps.
Amber ON The port is enabled and established a link to connected device, and the connection speed
is 100 Mbps.
Amber Blinking The port is transmitting/receiving packets, and the connection speed is 100 Mbps.
– OFF The port has no active network cable connected, or it has not established a link to a connected
device. Otherwise, the port may have been disabled through the switch user interface.
SFP+ Ports
Blue ON The port is enabled and established a link to connected device, and the connection speed
is 10 Gbps.
Blue Blinking The port is transmitting/receiving packets, and the connection speed is 10 Gbps.
Green ON The port is enabled and established a link to connected device, and the connection speed
is 1 Gbps.
Green Blinking The port is transmitting/receiving packets, and the connection speed is 1 Gbps.
– OFF The port has no active network cable connected, or it has not established a link to a connected
device. Otherwise, the port may have been disabled through the switch user interface.

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CHAPTER 1: INTRODUCTION
1.5 RESET BUTTON
Press the Reset button to:
Reset the Switch: Reboot and get the switch back to the previous configuration settings saved.
TABLE 1-5. RESET BUTTON
TASK TIME TO PRESS BUTTON SYS LED PORT STATUS LED
Reset the Switch 2 to 7 seconds Blinking Green All LEDs light OFF

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CHAPTER 2: INSTALLING THE SWITCH
2.1 WHAT’S INCLUDED
Your package should include the following items. If anything is missing or damaged, contact Black Box Technical Support
at 877-877-2269 or [e-mail]
(1) Switch
(1) AC power cord
(1) terminal block
(4) adhesive rubber feet
This Quick Installation Guide
NOTE: The switch is an indoor device. If it is to be used with outdoor devices such as outdoor IP cameras or outdoor WiFi APs,
then users are strongly recommended to install a surge protector or surge suppressor to protect the switch.
2.2 MOUNTING THE SWITCH IN A 19-INCH RACK
STEP 1: Attach the mounting brackets to both sides of the chassis. Insert screws and tighten then with a screwdriver to secure
the brackets.
FIGURE 2-1. ATTACH THE MOUNTING BRACKETS
STEP 2: Place the switch on a rack shelf in the rack. Push it in until the oval holes in the brackets align with the mounting holes
in the rack posts.

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CHAPTER 2: INSTALLING THE SWITCH
STEP 3: Attach the brackets to the posts. Insert screws and tighten them.
FIGURE 2-2. ATTACH THE BRACKETS TO THE RACK POST
2.3 MOUNTING THE SWITCH ON A DESK OR SHELF
STEP 1: Verify that the workbench is sturdy and reliably grounded.
STEP 2: Attach the four adhesive rubber feet to the bottom of the switch.
FIGURE 2-3. ATTACH THE RUBBER FEET

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CHAPTER 2: INSTALLING THE SWITCH
2.4 CONNECTING THE AC POWER CORD
STEP 1: Connect the AC power cord to the AC power receptacle of switch.
STEP 2: Connect the other end of the AC power cord to the AC power outlet.
STEP 3: Check the SYS LED. If it is ON, the power connection is correct.
FIGURE 2-4. CONNECT THE AC POWER CORD
2.5 CONNECTING THE DC POWER CORD
STEP 1: Insert the negative/positive DC wires into the V-/V+ terminals, respectively.
STEP 2: To keep the DC wires from pulling loose, use a small flat-blade screwdriver to tighten the wire-clamp screws on the front
of the terminal block connector.
STEP 3: Insert the terminal block connector prongs into the terminal block receptor.
STEP 4: Check the SYS LED. If it is ON, the power connection is correct.
DC power input
FIGURE 2-5. CONNECT THE DC POWER CORD

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CHAPTER 2: INSTALLING THE SWITCH
2.6 INSTALLING SFP/SFP+ MODULES
You can install or remove a mini-GBIC SFP/SFP+ module from an SFP/SFP+ port without having to power off the switch.
STEP 1: Insert the module into the SFP/SFP+ port.
STEP 2: Press firmly to ensure that the module seats into the connector.
FIGURE 2-6. INSTALL AN SFP/SFP+ MODULE INTO AN SFP/SFP+ PORT
NOTE: The SFP/SFP+ ports should use UL Listed Optional Transceiver product, Rated 3.3Vdc, Laser Class 1. Compatible modules
are listed below.
TABLE 2-1. COMPATIBLE SFP/SFP+ MODULES
PRODUCT CODE DESCRIPTION
LFP411 SFP, 1250-Mbps Fiber with Extended Diagnostics, 850-nm Multimode, 550 m LC
LFP412 SFP, 1250-Mbps Fiber with Extended Diagnostics, 1310-nm Multimode, 2 km LC
LFP413 SFP, 1250-Mbps Fiber with Extended Diagnostics, 1310-nm Single-Mode, 10 km LC
LFP414 SFP, 1250-Mbps Fiber with Extended Diagnostics, 1310-nm Single-Mode, 30 km LC
LFP415 SFP with SerDes Interface, 1250 Mbps, RJ45, 1000BASE-T, Extended Diagnostics
LFP416 SFP with SGMII Interface, 1250 Mbps, RJ45, 10/100/1000BASE-T, Extended Diagnostics
LFP417 SFP with SerDes Interface, 1250 Mbps, RJ45, 1000BASE-T, Extended Diagnostics
LFP418 SFP, 1250-Mbps Fiber with Extended Diagnostics, 1550-nm Single-Mode, 80 km, LC
LFP420 SFP, 1250-Mbps Simplex Fiber with Extended Diagnostics, 1550-nm TX, 1310-nm RX, Single-Mode, 10 km, LC
LFP421 SFP, 1250-Mbps Simplex Fiber with Extended Diagnostics, 1310-nm TX, 1550-nm RX, Single-Mode, 10 km, LC
LFP401 SFP, 155-Mbps Fiber with Extended Diagnostics, 850-nm Multimode, 2 km, LC
LFP402 SFP, 155-Mbps Fiber with Extended Diagnostics, 1310-nm Multimode, 2 km, LC
LFP403 SFP, 155-Mbps Fiber with Extended Diagnostics, 1310-nm Single-Mode, 30 km, LC
LPF404 SFP, 155-Mbps Fiber with Extended Diagnostics, 1310-nm Single-Mode, 60 km, LC

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CHAPTER 3: INITIAL CONFIGURATION OF THE SWITCH
3.1 INITIAL SWITCH CONFIGURATION USING WEB BROWSERS
After powering up the switch for the first time, you can perform the initial switch configuration using a web browser. For managing
other switch features, please refer to the Web interface user guide for details.
To begin with the initial configuration stage, you need to reconfigure your PC’s IP address and subnet mask so as to make sure the
PC can communicate with the switch. After changing the PC’s IP address (for example, 192.168.1.250), then you can access the
Web interface of the switch using the switch’s default IP address as shown below.
NOTE:
The factory default IP address of the switch is 192.168.1.1
The factory default Subnet Mask of switch is 255.255.255.0
The initial switch configuration procedure is described next.
3.2 INITIAL SWITCH CONFIGURATION PROCEDURE
The initial switch configuration procedure is as follows:
STEP 1: Power up the PC that you will use for the initial configuration. Make sure the PC has the Ethernet RJ-45 connector attached
to the switch via standard Ethernet LAN cable.
STEP 2: Reconfigure the PC’s IP address and Subnet Mask as below, so that it can communicate with the switch. The method to
change the PC’s IP address, for example, for a PC running Windows®7/8.x/10, is as follows:
STEP 2A: Type “network and sharing“ into the Search box in the Start Menu.
STEP 2B: Select Network and Sharing Center.
STEP 2C: Click on Change adapter settings on the left of PC screen.
NOTE: Users can also skip step 2A to 2C, by pressing WinKey+R and type ”ncpa.cpl” command to get to step 2D directly.
STEP 2D: Right-click on your local adapter and select Properties
STEP 2E: In the Local Area Connection Properties window, highlight Internet Protocol Version 4 (TCP/IPv4) then click the Properties
button.
NOTE: Be sure to record all your PC’s current IP settings to be able to restore them later.
STEP 2F: Select the radio button “Use the following IP address” and enter in the IP for the PC (e.g. any IP address not in use, and
in between 192.168.1.2 and 192.168.1.254), Subnet mask (e.g. 255.255.255.0), and Default gateway that corresponds with your
network setup. Then enter your Preferred and Alternate DNS server addresses.
STEP 2G: Click OK to change the PC’s IP address.
STEP 3: Power up the switch to be initially configured, and wait until it has finished its start-up processes.
STEP 4: Connect the PC to any port on the switch using a standard Ethernet cable, and check the port LED on the switch to make
sure the link status of the PC is OK.
STEP 5: Run your Web browser on the PC, enter the factory default IP address, so you can access the switch’s Web interface.

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CHAPTER 3: INITIAL CONFIGURATION OF THE SWITCH
If your PC is configured correctly, you will see the login page of the switch as shown in Figure 3-1.
FIGURE 3-1. WEB INTERFACE LOGIN PAGE
If you do not see the above login page, perform the following steps:
Refresh the web page.
Check to see if there is an IP conflict issue.
Clean browser cookies and temporary internet files.
Check your PC settings again and repeat step 2.
STEP 6: Enter the factory default username and password in login page. Click “Login” to log into the switch.
NOTE:
The factory default Username of the switch is admin.
There is no factory default Password of the switch.

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CHAPTER 4: TROUBLESHOOTING
The following table provides information for users to easily troubleshoot problems by taking actions based on the suggested
solutions.
TABLE 4-1. TROUBLESHOOTING
SYMPTOM POSSIBLE CAUSE SUGGESTED SOLUTIONS
System LED is OFF The switch is not receiving power
1. Check if correct power cord is connected firmly to the switch and
to the AC/DC outlet socket.
2. Perform power cycling the switch by unplugging and plugging the
power cord back into the switch.
3. If the LED is still off, try to plug power cord into a different AC/DC
outlet socket to make sure correct AC/DC source is supplied.
Port Status LED is OFF The port is not connected or the connection
is not working
1. Check if the cable connector plug is firmly inserted and locked into
the port at both the switch and the connected device.
2. Make sure the connected device is up and running correctly.
3. If the symptom still exists, try a different cable or a different port,
in order to identify if it is related to the cable or specific port.
4. Check if the port is disabled in the configuration settings via the
Web user interface.

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CHAPTER 5: DISCLAIMER/TRADEMARKS
5.1 DISCLAIMER
Black Box Corporation shall not be liable for damages of any kind, including, but not limited to, punitive, consequential or cost of cover
damages, resulting from any errors in the product information or specifications set forth in this document and Black Box Corporation
may revise this document at any time without notice.
5.2 TRADEMARKS USED IN THIS MANUAL
Black Box and the Black Box logo type and mark are registered trademarks of Black Box Corporation.
Any other trademarks mentioned in this manual are acknowledged to be the property of the trademark owners.

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NOTES
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