Black Box LPB5028A User manual

User Manual
• LPB5028A has (20) 10/100/1000BASE-T access ports, (4) 100/1G copper/
fiber combo ports with dual-speed SFP slots, and (4) 10 Gigabit SFP+
uplink ports with dual-speed (1G/10G).
• LPB5052A has (48) 10/100/1000BASE-T access ports, and (4) 10 Gigabit
SFP+ uplink ports with dual-speed (1G/10G).
Gigabit PoE+ Ethernet Managed Switch Eco
LPB5028A
LPB5052A
Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500)
FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax [phone]
Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com • E-mail: [e-mail]
Customer
Support
Information

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Page 2
Trademarks Used in this Manual
We‘re here to help! If you have any questions about your application
or our products, contact Black Box Tech Support at 724-746-5500
or go to blackbox.com and click on “Talk to Black Box.”
You’ll be live with one of our technical experts in less than 60 seconds.
Trademarks Used in this Manual
Black Box and the Double Diamond logo are registered trademarks of BB Technologies, Inc.
Any other trademarks mentioned in this manual are acknowledged to be the property of the trademark owners.
Disclaimer:
Black Box Network Services 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 Network Services may revise this document at any time without notice.

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FCC and IC RFI Statements
Federal Communications Commission and Industry Canada Radio Frequency Interference
Statements
This equipment generates, uses, and can radiate radio-frequency energy, and if not installed and used properly, that is, in strict
accordance with the manufacturer’s instructions, may cause interference to radio communication. It has been tested and found to
comply with the limits for a Class A computing device in accordance with the specifications in Subpart B of Part 15 of FCC rules,
which are designed to provide reasonable protection against such interference when the equipment is operated in a commercial
environment. Operation of this equipment in a residential area is likely to cause interference, in which case the user at his own
expense will be required to take whatever measures may be necessary to correct the interference.
Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to
operate the equipment.
This digital apparatus does not exceed the Class A limits for radio noise emission from digital apparatus set out in the Radio
Interference Regulation of Industry Canada.
Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites applicables aux appareils numériques de
la classe A prescrites dans le Règlement sur le brouillage radioélectrique publié par Industrie Canada.

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NOM Statement
Instrucciones de Seguridad
(Normas Oficiales Mexicanas Electrical Safety Statement)
1. Todas las instrucciones de seguridad y operación deberán ser leídas antes de que el aparato eléctrico sea operado.
2. Las instrucciones de seguridad y operación deberán ser guardadas para referencia futura.
3. Todas las advertencias en el aparato eléctrico y en sus instrucciones de operación deben ser respetadas.
4. Todas las instrucciones de operación y uso deben ser seguidas.
5. El aparato eléctrico no deberá ser usado cerca del agua—por ejemplo, cerca de la tina de baño, lavabo, sótano mojado o cerca
de una alberca, etc.
6. El aparato eléctrico debe ser usado únicamente con carritos o pedestales que sean recomendados por el fabricante.
7. El aparato eléctrico debe ser montado a la pared o al techo sólo como sea recomendado por el fabricante.
8. Servicio—El usuario no debe intentar dar servicio al equipo eléctrico más allá a lo descrito en las instrucciones de operación.
Todo otro servicio deberá ser referido a personal de servicio calificado.
9. El aparato eléctrico debe ser situado de tal manera que su posición no interfiera su uso. La colocación del aparato eléctrico
sobre una cama, sofá, alfombra o superficie similar puede bloquea la ventilación, no se debe colocar en libreros o gabinetes
que impidan el flujo de aire por los orificios de ventilación.
10. El equipo eléctrico deber ser situado fuera del alcance de fuentes de calor como radiadores, registros de calor, estufas u otros
aparatos (incluyendo amplificadores) que producen calor.
11. El aparato eléctrico deberá ser connectado a una fuente de poder sólo del tipo descrito en el instructivo de operación, o como
se indique en el aparato.
12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización del equipo no sea eliminada.
13. Los cables de la fuente de poder deben ser guiados de tal manera que no sean pisados ni pellizcados por objetos colocados
sobre o contra ellos, poniendo particular atención a los contactos y receptáculos donde salen del aparato.
14. El equipo eléctrico debe ser limpiado únicamente de acuerdo a las recomendaciones del fabricante.
15. En caso de existir, una antena externa deberá ser localizada lejos de las lineas de energia.
16. El cable de corriente deberá ser desconectado del cuando el equipo no sea usado por un largo periodo de tiempo.
17. Cuidado debe ser tomado de tal manera que objectos liquidos no sean derramados sobre la cubierta u orificios de ventilación.
18. Servicio por personal calificado deberá ser provisto cuando:
A: El cable de poder o el contacto ha sido dañado; u
B: Objectos han caído o líquido ha sido derramado dentro del aparato; o
C: El aparato ha sido expuesto a la lluvia; o
D: El aparato parece no operar normalmente o muestra un cambio en su desempeño; o
E: El aparato ha sido tirado o su cubierta ha sido dañada.

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About this Guide
Installation and Getting Started Guide for:
Gigabit PoE+ Ethernet Managed Switch Eco – 24-Port
Gigabit PoE+ Ethernet Managed Switch Eco – 52-Port
About this Guide
This guide gives specific information on how to operate and use the management functions of the Gigabit PoE+ Ethernet
Managed Switch Eco.
The guide is intended for use by network administrators who are responsible for operating and maintaining network equipment;
consequently, it assumes a basic working knowledge of general switch functions, the Internet Protocol (IP), and Simple Network
Management Protocol (SNMP).
The following conventions are used throughout this guide to show information:
NOTE: Emphasizes important information or calls your attention to related features or instructions.
CAUTION: Alerts you to a potential hazard that could cause loss of data, or damage the system or equipment.
WARNING: Alerts you to a potential hazard that could cause personal injury.
Safety Information
CAUTION: Circuit devices are sensitive to static electricity, which can damage their delicate electronics. Dry weather conditions or
walking across a carpeted floor may cause you to acquire a static electrical charge.
To protect your device, always:
• Touch the metal chassis of your computer to ground the static electrical charge before you pick up the circuit device.
• Pick up the device by holding it on the left and right edges only.
• If you need to connect this switch to an outdoor device, add an arrester on the cable between the outdoor device and this
switch.
NOTE: The switch is indoor device, if it connects with an outdoor device, then it must use a lightning arrester to protect the
switch.
WARNING:
• Do not place the switch outdoors.
• Before installation, make sure the input power supply and product specifications are compatible with each other.
• To reduce the risk of electric shock, disconnect all AC or DC power cords and RPS cables to completely remove power from the
unit.
• Before importing/exporting configuration, make sure the firmware version is the same.
• After a firmware upgrade, the switch will update automatically to the latest firmware version.
How to Download the User Manual
The Gigabit PoE+ Ethernet Managed Switch Eco user manual gives specific information on how to operate and use the manage-
ment functions of the switch:
To download the Gigabit PoE+ Ethernet Managed Switch Eco user manual from the Web site:
1. Go to www.blackbox.com
2. Enter the part number (LPB5028A or LPB5052A) in the search box:
3. Click on the “Resources” tab on the product page, and select the document you wish to download.

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Table of Contents
Contents
1. Specifications .......................................................................................................................................................................10
2. Introduction .......................................................................................................................................................................12
2.1 Overview ......................................................................................................................................................................12
2.2 About this Manual........................................................................................................................................................12
2.3 Features .......................................................................................................................................................................12
2.4 Hardware Description ...................................................................................................................................................13
2.4.1 1000BASE-T Ports ..........................................................................................................................................13
2.4.2 SFP Transceiver Slots .......................................................................................................................................13
2.4.3 Port and System LEDs.....................................................................................................................................14
2.4.4 Power Supply Socket ......................................................................................................................................14
2.4.5 Mode Status LEDs...........................................................................................................................................15
2.5 Switch Architecture.......................................................................................................................................................15
2.6 Network Management Options....................................................................................................................................15
3. Operation of Web-based Management ..................................................................................................................................16
3.1 Initial Configuration ......................................................................................................................................................16
3.2 Connecting to PCs, Servers, Hubs, and Switches..........................................................................................................19
3.3 Network Wiring Connections .......................................................................................................................................19
4. System .......................................................................................................................................................................21
4.1 System Information.......................................................................................................................................................21
4.1.1 Information.....................................................................................................................................................21
4.1.2 Configuration ................................................................................................................................................ 22
4.1.3 CPU Load....................................................................................................................................................... 23
4.2 Time .......................................................................................................................................................................24
4.2.1 Manual ...........................................................................................................................................................24
4.2.2 NTP.................................................................................................................................................................25
4.3 Account .......................................................................................................................................................................26
4.3.1 Users...............................................................................................................................................................26
4.3.2 Privilege Level .................................................................................................................................................27
4.4 IP ...................................................................................................................................................................... 29
4.4.1 IPV4 ............................................................................................................................................................... 29
4.4.2 IPV6............................................................................................................................................................... 30
4.5 Syslog .......................................................................................................................................................................31
4.5.1 Configuration .................................................................................................................................................31
4.5.2 Log ................................................................................................................................................................ 32
4.5.3 Detailed Log .................................................................................................................................................. 33
4.6 SNMP ...................................................................................................................................................................... 34
4.6.1 System ........................................................................................................................................................... 34
4.6.2 Configuration ................................................................................................................................................ 35
4.6.3 Communities ................................................................................................................................................. 35
4.6.4 Users.............................................................................................................................................................. 36
4.6.5 Groups........................................................................................................................................................... 37
4.6.6 Views............................................................................................................................................................. 38
4.6.7 Access............................................................................................................................................................ 39
4.6.8 Tarp ............................................................................................................................................................... 40
5. Configuration ...................................................................................................................................................................... 43
5.1 Port ...................................................................................................................................................................... 43
5.1.1 Configuration ................................................................................................................................................ 43
5.1.2 Port Description............................................................................................................................................. 45
5.1.3 Traffic Overview............................................................................................................................................. 46
5.1.4 Detailed Statistics............................................................................................................................................47

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Table of Contents
5.1.5 QoS Statistics................................................................................................................................................. 48
5.1.6 SFP Information ............................................................................................................................................. 49
5.2 ACL .......................................................................................................................................................................51
5.2.1 Por t s ...............................................................................................................................................................51
5.2.2 Rate Limiters .................................................................................................................................................. 52
5.2.3 Access Control List......................................................................................................................................... 53
5.2.4 ACL Status ..................................................................................................................................................... 60
5.3 Aggregation ................................................................................................................................................................ 62
5.3.1 Static Trunk.................................................................................................................................................... 62
5.3.2 LACP.............................................................................................................................................................. 64
5.4 Spanning Tree.............................................................................................................................................................. 68
5.4.1 Bridge Settings .............................................................................................................................................. 69
5.4.2 MSTI Mapping................................................................................................................................................71
5.4.3 MSTI Priorities................................................................................................................................................ 72
5.4.4 CIST Ports ...................................................................................................................................................... 73
5.4.5 MSTI Ports ......................................................................................................................................................75
5.4.6 Bridge Status ................................................................................................................................................. 77
5.4.7 Port Status..................................................................................................................................................... 77
5.4.8 Port Statistics ................................................................................................................................................. 78
5.5 IGMP Snooping ........................................................................................................................................................... 79
5.5.1 Basic Configuration........................................................................................................................................ 79
5.5.2 VLAN Configuration .......................................................................................................................................81
5.5.3 Port Group Filtering....................................................................................................................................... 82
5.5.4 Status............................................................................................................................................................. 83
5.5.5 Group Information......................................................................................................................................... 84
5.5.6 IPv4 SSM Information.................................................................................................................................... 85
5.6 MLD Snooping ............................................................................................................................................................ 87
5.6.1 Basic Configuration........................................................................................................................................ 87
5.6.2 VLAN Configuration ...................................................................................................................................... 89
5.6.3 Port Group Filtering ....................................................................................................................................... 90
5.6.4 Status..............................................................................................................................................................91
5.6.5 Group Information..........................................................................................................................................93
5.6.6 IPv6 Ssm Information......................................................................................................................................93
5.7 MVR ...................................................................................................................................................................... 94
5.7.1 Configuration ................................................................................................................................................ 94
5.7.2 MVR Port Group Allow Configuration........................................................................................................... 96
5.7.3 Groups Information ....................................................................................................................................... 96
5.7.4 Statistics......................................................................................................................................................... 97
5.8 LLDP ...................................................................................................................................................................... 98
5.8.1 LLDP Configuration........................................................................................................................................ 98
5.8.2 LLDP Neighbors ........................................................................................................................................... 100
5.8.3 LLDP-MED Configuration..............................................................................................................................102
5.8.4 LLDP-MED Neighbors .................................................................................................................................. 108
5.8.5 Port Statistics ................................................................................................................................................ 111
5.9 PoE .....................................................................................................................................................................113
5.9.1 Configuration ...............................................................................................................................................113
5.9.2 Status............................................................................................................................................................ 115
5.9.3 Power Delay..................................................................................................................................................116
5.9.4 Auto Checking.............................................................................................................................................. 117
5.9.5 Scheduling.................................................................................................................................................... 119
5.10 Filtering Database .......................................................................................................................................................120
5.10.1 Configuration ...............................................................................................................................................120
5.10.2 Dynamic MAC Table.....................................................................................................................................122
5.11 VLAN .....................................................................................................................................................................123
5.11.1 VL AN Memb er ship .......................................................................................................................................123

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5.11. 2 Po r t s .............................................................................................................................................................125
5.11.3 Switch Status ................................................................................................................................................126
5.11.4 Port Status....................................................................................................................................................128
5.11.5 Private VLANs...............................................................................................................................................129
5.11.6 MAC-based VLAN ........................................................................................................................................131
5.11.7 Protocol-based VLAN ...................................................................................................................................133
5.12 Voice VLAN ................................................................................................................................................................136
5.12.1 Configuration ...............................................................................................................................................136
5.12.2 OUI ...............................................................................................................................................................138
5.13 GARP .....................................................................................................................................................................139
5.13.1 Configuration ...............................................................................................................................................139
5.13.2 Statistics........................................................................................................................................................141
5.14 GVRP .....................................................................................................................................................................142
5.14.1 Configuration ...............................................................................................................................................142
5.14.2 Statistics....................................................................................................................................................... 144
5.15 QoS .....................................................................................................................................................................145
5.15.1 Port Classification ........................................................................................................................................ 146
5.15.2 Port Policing..................................................................................................................................................147
5.15.3 Port Scheduler ............................................................................................................................................. 148
5.15.4 Port Shaping.................................................................................................................................................151
5.15.5 Port Tag Remarking ......................................................................................................................................154
5.15.6 Port DSCP .....................................................................................................................................................155
5.15.7 DSCP-based QoS ..........................................................................................................................................157
5.15.8 DSCP Translation...........................................................................................................................................159
5.15.9 DSCP Classification .......................................................................................................................................161
5.15.10 QoS Control List Configuration.....................................................................................................................162
5.15.11 QCL St atus ....................................................................................................................................................165
5.15.12 Storm Control...............................................................................................................................................167
5.15.13 WRED .......................................................................................................................................................... 168
5.16 s-Flow Agent ..............................................................................................................................................................169
5.16.1 Collec tor .......................................................................................................................................................169
5.16.2 Sampler ........................................................................................................................................................171
5.17 Loop Protection ..........................................................................................................................................................172
5.17.1 Configuration ...............................................................................................................................................172
5.17.2 Status............................................................................................................................................................174
5.18 Single IP .....................................................................................................................................................................175
5.18.1 Configuration ...............................................................................................................................................175
5.18.2 Information...................................................................................................................................................176
5.19 Easy Port.....................................................................................................................................................................176
5.20 Mirroring ....................................................................................................................................................................178
5.21 Trap Event Severity..................................................................................................................................................... 180
5.22 SMTP Configuration ...................................................................................................................................................182
5.23 UPnP .....................................................................................................................................................................183
6. Security .................................................................................................................................................................... 184
6.1 Source Guard............................................................................................................................................................. 184
6.1.1 Configuration .............................................................................................................................................. 184
6.1.2 Static Table .................................................................................................................................................. 186
6.1.3 Dynamic Table ..............................................................................................................................................187
6.2 ARP Inspection ...........................................................................................................................................................187
6.2.1 Configuration ...............................................................................................................................................187
6.2.2 Static Table ...................................................................................................................................................189
6.2.3 Dynamic Table ............................................................................................................................................. 190
6.3 DHCP Snooping......................................................................................................................................................... 190
6.3.1 Configuration .............................................................................................................................................. 190
6.3.2 Statistics........................................................................................................................................................192

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Table of Contents
6.4 DHCP Relay.................................................................................................................................................................193
6.4.1 Configuration ...............................................................................................................................................193
6.4.2 Statistics....................................................................................................................................................... 194
6.5 NAS .....................................................................................................................................................................195
6.5.1 Configuration ...............................................................................................................................................195
6.5.2 Switch Status ............................................................................................................................................... 202
6.5.3 Port Status................................................................................................................................................... 204
6.6 AAA .................................................................................................................................................................... 206
6.6.1 Configuration .............................................................................................................................................. 206
6.6.2 Radius Overview.......................................................................................................................................... 209
6.6.3 Radius Details ...............................................................................................................................................210
6.7 Port Security ...............................................................................................................................................................210
6.7.1 Limit Control.................................................................................................................................................210
6.7.2 Switch Status ................................................................................................................................................213
6.7.3 Port Status....................................................................................................................................................215
6.8 Access Managment ....................................................................................................................................................216
6.8.1 Configuration ...............................................................................................................................................216
6.8.2 Statistics........................................................................................................................................................217
6.9 SSH .....................................................................................................................................................................218
6.10 HTTPs .....................................................................................................................................................................218
6.11 Auth Method..............................................................................................................................................................219
7. Maintenance .....................................................................................................................................................................221
7.1 Restart Device.............................................................................................................................................................221
7.2 Firmware.....................................................................................................................................................................221
7.2.1 Firmware Upgrade........................................................................................................................................221
7.2.2 Firmware Selection ...................................................................................................................................... 222
7.3 Save / Restore ...............................................................................................................................................................224
7.3.1 Factory Defaults............................................................................................................................................224
7.3.2 Save Start .....................................................................................................................................................224
7.3.3 Save User..................................................................................................................................................... 225
7.3.4 Restore User ................................................................................................................................................ 225
7.4 Export/Import............................................................................................................................................................ 226
7.4.1 Export Config .............................................................................................................................................. 226
7.4.2 Import Config...............................................................................................................................................227
7.5 Diagnostics .................................................................................................................................................................227
7.5.1 Ping ............................................................................................................................................................. 228
7.5.2 Ping6 ........................................................................................................................................................... 228
7.5.3 VeriPHY ....................................................................................................................................................... 229
Appendix A. Glossary of Web-based Management.....................................................................................................................231

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Chapter 1: Specifications
1. Specifications
Physical Characteristics
Aggregate Bandwidth 28 Gbps
Buffer Architecture 4096 bytes on-chip frame buffer
Network Interface Ports 1–24 (LPB5028A) or Ports 1–48 (LPB5052A): RJ-45 connector, auto MDI/X
10BASE-T: RJ-45 (100-ohm, UTP cable; Category 3 or better);
100BASE-TX: RJ-45 (100-ohm, UTP cable; Category 5 or better);
1000BASE-T: RJ-45 (100-ohm, UTP or STP cable; Category 5, 5e, or 6)
*Maximum Cable Length = 328 ft (100 m)
Ports 24–28 (LPB5028A) or 48–52 (LPB5052A): 1G/10G SFP ports
Ports LPB5028A:
(20) 10/100/1000BASE0-T access ports,
(4) copper/fiber combo ports with dual-speed SFP slots,
(4) 10 Gigabit SFP+ uplink ports with dual speed (1G/10G),
(1) DB9 console port;
LPB5052A:
(48) 10/100/1000BASE-T access ports,
(4) 10 Gigabit SFP+ uplink slots with dual speed (1G/10G),
(1) DB9 console port
Switching Database 32K MAC address entries
Connectors LPB5028A: (24) RJ-45, (4) SFP slots, (4) SFP+ slots, (1) DB9;
LPB5052A: (48) RJ-45, (4) SFP+ slots, (1) DB9
Indictators LEDs:
System: Power;
TP Port: Status (LINK/ACT/SPD), 10/100/1000M;
SFP Port: Status (LINK/ACT/SPD), 1G/10G
Temperature Operating: 32°F to 104°F (0°C to 40°C)
Humidity Operating: 5% to 90% (non-condensing)
Power Input: 100–240 VAC, 50–60 Hz;
Power Supply: Internal: 100 to 240 VAC, 50 to 60 Hz;
Consumption: 60 Watts maximum
Dimensions 1.7"H x 17.4"W x 11.8"D (4.4 x 44.2 x 30 cm)
Weight LPB5028A: 8.6 lb. (3.9 kg);
LPB5052A: 9.0 lb. (4.1 kg)
Switch Features
Flow Control Full-duplex: IEEE 802.3x;
Half-duplex: Backpressure
Forwarding Mode Store-and-forward
Throughput 95.23 Mbps
Management Features
In-Band Management SSH/SSL, Telnet, SNMP, or HTTP
Out-of-Band
Management
RS-232 (DB9) console port
Software Loading HTTP, TFTP in-band, Console out-of-band

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Chapter 1: Specifications
Switch Features (continued)
Approvals Emissions:
EN55022 (CISPR 22) Class A EN 61000-3;
FCC Class A;
CE Mark;
Immunity:
EN 61000-4-2/3/4/5/6/8/11;
EN 55024
Standards IEEE 802.3 => 10Base-T Ethernet (Twisted-pair Copper);
IEEE 802.3u => 100Base-TX Ethernet (Twisted-pair Copper);
IEEE 802.3ab => 1000Base-TX Ethernet (Twisted-pair Copper);
IEEE 802.3z => 1000Base-X Ethernet;
IEEE 802.3x => Flow Control Capability;
ANSI/IEEE 802.3 => Auto-negotiation;
IEEE 802.1Q => VLAN;
IEEE 802.1p => Class of Service;
IEEE 802.1X => Access Control;
IEEE 802.1D => Spanning Tree;
IEEE 802.1w => Rapid Spanning Tree;
IEEE 802.1s => Multiple Spanning Tree;
IEEE 802.3ad => ink Aggregation Control Protocol (LACP);
IEEE 802.1AB => Link Layer Discovery Protocol (LLDP)

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Chapter 2: Introduction
2. Introduction
2.1 Overview
The Gigabit PoE+ Ethernet Managed Switch Eco provides a reliable infrastructure for your business network. The switch improves
the availability of your critical business applications, protects your sensitive information, and optimizes your network bandwidth.
Easy to set up and use, it provides the ideal combination of affordability and capabilities for entry-level networking. Use the switch
in a small business or enterprise application.
Two models are available:
• Gigabit PoE+ Ethernet Managed Switch Eco – 24-Port (product code LPB5028A). This model has (20) 10/100/1000BASE0-T
access ports, (4) copper/fiber combo ports with dual-speed SFP slots, and (4) 10 Gigabit SFP+ uplink ports with dual speed
(1G/10G).
• Gigabit PoE+ Ethernet Managed Switch Eco – 52-Port (product code LPB5052A). This model has (48) 10/100/1000BASE-T
access ports and (4) 10 Gigabit SFP+ uplink slots with dual speed (1G/10G).
Unlike other entry-level network switching solutions that provide advance managed network capabilities only in the costliest
models, the Gigabit PoE+ Ethernet Managed Switch Eco supports data, voice, security, and wireless technologies. The switch is
easy to deploy and configure.
2.2 About this Manual
This user’s manual tells you how to install and connect your network system and configure and monitor the LPB5028A or
LPB5052A by (RS-232) serial interface or through the Web and Ethernet ports. Detailed explanations of hardware and software
functions are shown as well as operation examples for a Web-based interface.
2.3 Features
• L2+ features provide better manageability, security, QoS, and performance.
• High port count design includes all Gigabit Ethernet ports.
• Supports the following:
• Guest VLAN, voice VLAN, Port based, tag-based, and Protocol based VLANs.
• 802.3az Energy Efficient Ethernet standard.
• 8K MAC table.
• IPv6/ IPv4 Dual stack.
• s-Flow.
• 802.3at and complies with 802.3af standard.
• Easy-Configuration-Port for IP Phone, IP camera, or wireless environment.

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Chapter 2: Introduction
2.4 Hardware Description
Figures 2-1 and 2-2 show the front and back panels of the LPB5052A.
PoE LED
System LED
Mode button
Switch TP
Port LEDs
1G/10G SFP
ports
Switch SFP
Port LEDs
10/100/1000BASE-T
RJ-45 ports
Link/Act LED
Speed LED
Figure 1-1. Front of the LPB5052A Switch.
AC power
socket
Console port
Figure 1-2. Back of the LPB5028A or LPB5052A Switch.
2.4.1 1000BASE-T Ports
The LPB5028A switch has (20) 1000BASE-T RJ-45 ports and (4) copper/fiber combo ports with dual-speed SFP slots, and the
LPB5052A switch has (48) 1000BASE-T RJ-45 ports. All RJ-45 ports support automatic MDI/MDI-X operation, auto-negotiation
and IEEE 802.3x auto-negotiation of flow control, so the optimum data rate and transmission can be selected automatically.
2.4.2 SFP Transceiver Slots
The Gigabit PoE+ Ethernet Managed Switch Eco LPB5028A supports the Small Form Factor Pluggable (SFP) transceiver slots on
ports 21 to 28, and the LPB5052A supports SFP on ports 48 to 52.
Table 2-1 shows a list of transceiver types that have been tested with the switch. For information on the recommended standards
for fiber optic cabling, see “1000 Mbps Gigabit Ethernet Collision Domain” on page X.

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Chapter 2: Introduction
Table 2-1. Supported SFP Transceivers.
Product Code Description
LFP401 SFP, 155-Mbps Fiber with Extended Diagnostics, 850-nm Multimode, LC, 2 km
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, Plus, 30 km, LC
LFP411 SFP, 1.25-Gbps Fiber with Extended Diagnostics, 850-nm Multimode, LC, 300 m
LFP412 SFP, 1.25-Gbps Fiber with Extended Diagnostics, 1310-nm Multimode, LC, 2 km
LFP413 SFP, 1.25-Gbps Fiber with Extended Diagnostics, 1310-nm Single-Mode, LC, 10 km
LFP414 SFP, 1.25-Gbps Fiber with Extended Diagnostics, 1310-nm Single-Mode, LC, 30 km
LSP421 10GBASE-SR SFP+, 850-nm Multimode, 300 m, LC
LSP422 10GBASE-SR SFP+, 1310-nm Single-Mode, 10 km, LC
2.4.3 Port and System LEDs
The Gigabit PoE+ Ethernet Managed Switch Eco switch includes a display panel for system and port indications that simplify
installation and network troubleshooting. The LEDs are located on left-hand side of the front panel for easy viewing. Details are
shown below and described in the following tables.
Table 2-2. Port Status LEDs.
LED Condition Status
TP (Link/ACT) Green/Blinking Lights Green when TP link is good.
Blinks when any traffic is present.
TP SPEED Green/Yellow Lights Green when TP link on 1000 Mbps.
Yellow when TP link on 10/100 Mbps.
PoE (Link/ACT) Green Lights Green when PoE links with PD and supplies power to PD.
SFP (Link/ACT) Green/Blinking Lights Green when SFP link good.
Blinks when any traffic is present.
SFP SPEED Blue/Green Lights Blue when SFP link on 10Gbps.
Green when SFP link on 1000Mbps
Table 2-3. System Status LED.
LED Condition Status
System LED Green, OFF Lights when power is on and the switch is ready.
2.4.4 Power Supply Socket
The power socket uses an AC power cord and is located on the rear panel of the switch. See Figure 1-2.

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2.4.5 Mode Status LEDs
The Gigabit PoE+ Ethernet Managed Switch Eco has a mode switch. Each LED can switch between Link/ACT mode and Speed
mode when you press the Mode button. When the switch is on Link/ACT mode, each port's LED indicates the link or activity sta-
tus. When switch is in Speed mode, each port’s LED shows the link speed status of the port using different colors.
Table 2-4. Mode Status LED.
LED Condition Status
Link/ACT Green Lights when the corresponding port is in Link/ACT mode.
Speed Green Lights when the corresponding port is in Speed mode.
PoE (Link/ACT) Green Lights when the corresponding port is in PoE (Link/ACT) mode.
2.5 Switch Architecture
The switch operates at wire-speed, transporting multiple packets at low latency on all ports simultaneously.The switch also
operates at full-duplex, which effectively doubles the bandwidth of each connection.
For maximum data integrity, the switch uses store-and-forward technology. With this technology, the entire packet is received into
a buffer and checked for validity before it is forwarded. This prevents errors from being propagated throughout the network.
2.6 Network Management Options
You can also manage the switch over the network via a Web browser or Telnet. The switch includes a built-in network
management agent that allows it to be managed in-band using SNMP or RMON (Groups 1, 2, 3, 9) protocols. It also has an
RS-232 DB9 console port connector on the front panel for out-of-band management. A PC may be connected to this port for
configuration and monitoring out-of-band via a null-modem serial cable. (See Appendix B for wiring options.)
NOTE: For a detailed description of the management features, refer to the user’s manual.
To download the Gigabit PoE+ Ethernet Managed Switch Eco user manual from the Web site:
1. Go to www.blackbox.com
2. Enter the part number (LPB5028A or LPB5052A) in the search box:
3. Click on the “Resources” tab on the product page, and select the document you wish to download.

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3. Operation of Web-based Management
3.1 Initial Configuration
This chapter explains how to configure and manage the LPB5028A or LPB5052A through the Web user interface. You can easily
access and monitor through any one switch port the switch status, including MIBs status, each port activity, Spanning tree status,
port aggregation status, multicast traffic, VLAN and priority status, even illegal access record and so on.
The default values of the LPB5028A are listed in the table below:
IP Address: 192.168.1.1
Subnet Mask: 255.255.255.0
Default Gateway: 192.168.1.254
Username: admin
Password: blank
Password
After you configure the LPB5028A, you can browse to it. Type http://192.168.1.1 in the address row in a browser, and you will see
the login screen prompting you for the username and password to login and access authentication.
The default username is “admin” and password is empty. The first time you use the switch, enter the default username and pass-
word, and then click on the <Login> button. The login process now is completed.
NOTE: In the login menu, you have to input the complete username and password respectively; the LPB5028A will not give you a
shortcut to username automatically. This looks inconvenient, but is safer.
This supports a simple user management function allowing only one administrator to configure the system at a time. If two or
more users are using administrator’s identity, it will allow only the one who logs in first to configure the system. The rest of the
users, even with administrator’s identity, can only monitor the system. Users who have no administrator’s identity can only moni-
tor the system, and a maximum of three users can login simultaneously to the LPB5028A or LPB5052A.
NOTE: When you login to the switch to manage it, you must first type the username, which, by default, is admin. The password is
blank, so after you type admin, press enter. The Web management page will appear.
You can manage the LPB5028A or LPB5052A switch Web UI via both ipv4 and ipv6. To optimize the display effect, we
recommend you use Microsoft IE 6.0 and above, Netscape V7.1 and above, or FireFox V1.00 and above with 1024 x 768
resolution. The switch supports a neutral Web browser interface.
NOTE: To enable the DHCP function, if you don’t have a DHCP server to provide IP addresses to the switch, use the switch’s
default IP address: 192.168.1.1.

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Figure 3-1. The login page.
NOTE: If you need to configure a function or parameter, follow the instructions in this User’s Guide. Or, you can access the
Switch’s help screens in the Web User Interface (UI).

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Figure 3-2. Web help screen.

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Connecting to Network Devices
The switch is designed to connect to 10-, 100-, or 1000-Mbps network cards in PCs and servers, as well as to other switches and
hubs. You can also connect it to remote devices using optional SFP transceivers.
Twisted-Pair Devices
Each device requires an unshielded twisted-pair (UTP) cable with RJ-45 connectors at both ends. Use Category 5, 5e, or 6 cable
for 1000BASE-T connections, and Category 5 or better for 100BASE-TX connections.
Cabling Guidelines
The RJ-45 ports on the switch support automatic MDI/MDI-X pin-out configuration, so you can use standard straight-through
twisted-pair cables to connect to any other network device (PCs, servers, switches, routers, or hubs).
See Appendix B for further information on cabling.
CAUTION: Do not plug a phone jack connector into an RJ-45 port. This will damage the switch. Use only twisted-pair cables with
RJ-45 connectors that conform to FCC standards.
3.2 Connecting to PCs, Servers, Hubs, and Switches
STEP 1: Attach one end of a twisted-pair cable segment to the device’s RJ-45 connector.
Figure 3-3. Making twisted-pair connections.
STEP 2: If the device is a network card and the switch is in the wiring closet, attach the other end of the cable segment to a
modular wall outlet that is connected to the wiring closet. (See the “Network Wiring Connections” section.) Otherwise, attach
the other end to an available port on the switch.
Make sure each twisted-pair cable does not exceed 328 feet (100 meters) in length.
NOTE: Avoid using flow control on a port connected to a hub unless it is actually required to solve a problem. Otherwise, back
pressure jamming signals may degrade overall performance for the segment attached to the hub.
STEP 3: As each connection is made, the Link LED (on the switch) corresponding to each port will light green (1000 Mbps) or
amber (100 Mbps) to indicate that the connection is valid.
3.3 Network Wiring Connections
Today, the punch-down block is an integral part of many of the newer equipment racks. It is actually part of the patch panel.
Instructions for making connections in the wiring closet with this type of equipment follow.
STEP 1: Attach one end of a patch cable to an available port on the switch, and the other end to the patch panel.
STEP 2: If not already in place, attach one end of a cable segment to the back of the patch panel where the punch-down block is
located, and the other end to a modular wall outlet.

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STEP 3: Label the cables to simplify future troubleshooting. See “Cable Labeling and Connection Records.”
Figure 3-4. Network Wiring Connections.