Optical Systems Design OSD2251BP Series User manual

OPERATOR MANUAL
OSD2251BP SERIES
4-PORT REDUNDANT RING
GIGABIT ETHERNET SWITCH WITH
PoE++ SOURCE

OPTICAL SYSTEMS DESIGN
DOC ID: 10119301
OSD2251BP OPERATOR MANUAL
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INDEX 1
1 TECHNICAL SUMMARY........................................................................................................ 5
1.1 BRIEF DESCRIPTION ............................................................................................................ 5
1.1.1 OVERVIEW............................................................................................................................................. 5
1.1.2 APPLICATIONS...................................................................................................................................... 6
1.1.3 FEATURES AND BENEFITS................................................................................................................. 6
1.2 TECHNICAL SPECIFICATIONS ........................................................................................... 7
1.3 PORT ALLOCATION ............................................................................................................. 8
2 INSTALLATION AND OPERATION..................................................................................... 9
2.1 INTRODUCTION .................................................................................................................... 9
2.2 INSTALLATION ..................................................................................................................... 9
2.2.1 WARNING AND PRECAUTIONS......................................................................................................... 9
2.2.2 DRAWINGS AND DIMENSIONS ....................................................................................................... 10
2.2.3 LOCATION ........................................................................................................................................... 11
2.2.4 POWER SUPPLY CONNECTIONS ..................................................................................................... 11
2.2.5 ALARM CONNECTION....................................................................................................................... 12
2.2.6 USB CONNECTOR............................................................................................................................... 13
2.2.7 LED INDICATORS ............................................................................................................................... 14
2.2.8 CONTROLS........................................................................................................................................... 15
2.2.9 FITTING SFP CONNECTORS ............................................................................................................. 16
2.3 OPERATION.......................................................................................................................... 17
2.3.1 CONNECTIONS.................................................................................................................................... 17
2.4 MINI USB P ORT ..................................................................................................................... 19
2.5 COMMAND LINE INTERFACE .......................................................................................... 20
2.5.1 TERMINAL EMULATION SETUP...................................................................................................... 20
2.5.2 COMMAND LINE FUNCTIONS ......................................................................................................... 21
2.6 W EB GUI ................................................................................................................................ 35
2.6.1 LOGGING ON TO THE SWITCH........................................................................................................ 36
2.6.2 GUI MENU ............................................................................................................................................ 37
3 MAINTENANCE...................................................................................................................... 45
3.1 INTRODUCTION .................................................................................................................. 45
3.2 EXTERNAL INSPECTION ................................................................................................... 45
3.3 ROUTINE MAINTENANCE................................................................................................. 45
4 WARRANTY ............................................................................................................................ 46
4.1 WARRANTY PERIOD.......................................................................................................... 46
4.2 REPAIRS................................................................................................................................ 46
4.2.1 WARRANTY REPAIRS........................................................................................................................ 46
4.2.2 OUT-OF-WARRANTY REPAIRS........................................................................................................ 46
4.2.3 SITE REPAIRS ...................................................................................................................................... 46
4.2.4 EXCLUSIONS ....................................................................................................................................... 46
FIGURE 1: TYPICAL RING CONFIGURATION ................................................................................. 5
FIGURE 2: PORT ALLOCATION.......................................................................................................... 8
FIGURE 3: MOUNTING DIMENSIONS ............................................................................................. 10
FIGURE 4: POWER SUPPLY CONNECTIONS.................................................................................. 11
FIGURE 5: ALARM OUTPUTS ........................................................................................................... 12
FIGURE 6: CONTACT CLOSURE OUTPUT ...................................................................................... 12
FIGURE 7: USB TYPE B CLI PORT.................................................................................................... 13
FIGURE 8: CLI DRIVER DOWNLOAD .............................................................................................. 13
FIGURE 9: LED INDICATORS............................................................................................................ 14
FIGURE 10: SWITCH CONTROLS ..................................................................................................... 15
FIGURE 11: 8-WAY DIP SWITCH ...................................................................................................... 15
FIGURE 12: FITTING/REMOVING SFP CONNECTORS ................................................................. 16
FIGURE 13: REDUNDANT RING CONFIGURATION ..................................................................... 17
FIGURE 14: REDUNDANT RING CONNECTION ............................................................................ 18

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OSD2251BP OPERATOR MANUAL
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FIGURE 15: BUS CONNECTION........................................................................................................ 18
FIGURE 16: MINI USB CONNECTOR ............................................................................................... 19
FIGURE 17: SERIAL PORT SETTINGS.............................................................................................. 20
FIGURE 18: VERSION CHECK........................................................................................................... 22
FIGURE 19: DEFAULT SETTING....................................................................................................... 23
FIGURE 20: IP CONFIGURATION ..................................................................................................... 24
FIGURE 21: TOPOLOGY CHECK....................................................................................................... 25
FIGURE 22: TOPOLOGY CHECK....................................................................................................... 26
FIGURE 23: NODE CHECK ................................................................................................................. 27
FIGURE 24: LOCAL NODE CHECK................................................................................................... 28
FIGURE 25: FLOAT BACKUP ENABLED 1 ...................................................................................... 29
FIGURE 26: RING TOPOLOGY .......................................................................................................... 29
FIGURE 27: FLOAT BACKUP ENABLED 2 ...................................................................................... 30
FIGURE 28: FLOAT BACKUP ENABLED 3 ...................................................................................... 30
FIGURE 29: FLOAT BACKUP DISABLED 1 ..................................................................................... 31
FIGURE 30: FLOAT BACKUP DISABLED 2 ..................................................................................... 32
FIGURE 31: FLOAT BACKUP DISABLED 3 ..................................................................................... 32
FIGURE 32: NODE IP SET................................................................................................................... 33
FIGURE 33: NODE ALL CHECK ........................................................................................................ 33
FIGURE 34: REBOOT........................................................................................................................... 34
TABLE 1: TECHNICAL SPECIFICATIONS ......................................................................................... 7
TABLE 2: DC OR AC POWER CONNECTION.................................................................................. 11
TABLE 3: ALARM CONNECTIONS................................................................................................... 12
TABLE 4: LED FUNCTION ................................................................................................................. 14
TABLE 5: 8-WAY DIP SWITCH SETTINGS...................................................................................... 15
TABLE 6: TERMINAL COMMAND LINES ....................................................................................... 21

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OSD2251BP OPERATOR MANUAL
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1TECHNICAL SUMMARY
1.1 BRIEF DESCRIPTION
1.1.1 OVERVIEW
The OSD2251BP is a 4-port industrial switch with redundant ring Gigabit Ethernet and PoE++ Source
providing simple network management with real-time monitoring. It has two 10/100/1000Base-T RJ45
copper ports and two SFP ports for ring/bus configuration.
The OSD2251BP incorporates redundant ring technology providing maximum reliability on critical
networks. In the event of device or fiber failure the data path will automatically switch to a secondary
path in less than 2ms per hop to maintain ring network integrity.
The OSD2251BP has Power over Ethernet++ (PoE++) function and operates as a Power Source
Equipment (PSE). The OSD2251BP PoE++ can provide up to 60W to each RJ45 port to Powered
Devices (PD). The unit will operate on either singlemode or multimode fiber. Operation over a network
of hundreds of kilometers is possible by use of the appropriate optical devices. It normally requires two
fibers but is optionally available for one fiber operation per port.
A major benefit of the OSD2251BP is its reliable and consistent performance over the -20°C to +75°C
temperature range that allows it to be used in uncontrolled environments such as roadside cabinets,
mine sites and factories.
FIGURE 1: TYPICAL RING CONFIGURATION

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OSD2251BP OPERATOR MANUAL
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1.1.2 APPLICATIONS
▲ Any network utilising a mix of copper
and fiber
▲ Industrial IP communications
▲ Self-healing Gigabit Ethernet
backbone networks
▲ Networks using Power over Ethernet
devices such as cameras, intercoms,
access control, telephones, etc.
1.1.3 FEATURES AND BENEFITS
▲ Complies with IEEE802.3i/802.3u/
802.3ab 10/100/1000Base-T,
IEEE802.3u, 100Base-Fx,
IEEE802.3z 1000Base-Lx/Sx
standards
▲ Has a total of four ports: two fixed
copper ports for 10/100/1000Base-T
and two SFP ports for the fiber ring or
non-ring (100Base-Fx or 1000Base-
X)
▲ A network diameter of hundreds of
kilometers is practical
▲ Ring reconfiguration in the case of
cable or switch failures takes less than
two milliseconds per hop
▲ MDI/MDIX Crossover: no need for
crossover cables
▲ Can be used with either singlemode
or multimode fiber over a variety of
link budgets
▲ Auto-Negotiation for half or full
duplex operation
▲ Supports IEEE802.3af/at Alternative
A and B cable wiring
▲ Provides up to 60W to each RJ45 port
▲ Complies with the IEEE802.3af/at
standard including compliant powered
device (PD) signature detection and
classification
▲ Powered by either one or two non-
critical 46 to 57V
DC
supplies
▲ Operates over the temperature range
of -20°C to +75°C
▲ Compatible with the OSD2244,
OSD2254 and OSD2258 Gigabit
Ethernet Switches.
▲ DIN rail Mounting
▲ Available for operation in Ring or
point-to-point configuration
▲ OSDview Lite Network Management
System Standard
▲ OSDWeb Web browser GUI
▲ SFP modules sold separately
▲ Supports 10KB jumbo frames

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OSD2251BP OPERATOR MANUAL
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1.2 TECHNICAL SPECIFICATIONS
TABLE 1: TECHNICAL SPECIFICATIONS
SPECIFICATION PERFORMANCE
Electrical Data Interface IEEE802.3i/802.3u/802.3ab/802.3af/802.3at, 10/100/1000Base-T Ethernet
Electrical Data Rate 10, 100, 1000Mbps with energy detect, auto negotiate, auto MDIX
Jumbo Frame Support 10KB
Optical Data Interface IEEE802.3z 1000Base-Lx/Sx or IEEE802.3u 100Base-Fx
Optical Data Rate 100Mbps or 1000Mbps user selectable
Operating Mode
Ring or non-ring user selectable
Half or full duplex for 10/100
Full duplex for 1000
Flow control
Electrical Data Connectors RJ45
Alarms Ring to Bus
High Temperature
Alarm Interface Optoisolated MOSFET rated at 100mA @ 46V maximum
PoE IEEE802.3af, IEEE802.3at and PoE++
Operating Mode Alternative A & B (Pins 1/2, 3/6, 4/5 and 7/8)
Optical Port Connectors SFP
SFP Options Short haul, long haul, single fiber operation, etc.
Please consult OSD DATASHEET #100210000x or contact OSD
Indicators
2x Copper Link
2x Copper Activity
2x PoE Operation on RJ45s
2x SFP Speed/Activity/Link on SFPs
1x Power/temperature Alarm
1x Initialise/Ring/Bus
Dimensions (mm) 43W x 91D x 110H
Weight 0.48kg
Power Requirements 46 to 57V
DC
@ 1.5A maximum (attached powered device dependant)
>52V
DC
recommended for PoE+ or ≥55V
DC
for 60W PoE
Power Connector 4 way 5.08mm terminal block
Alarm Connector 4 way 3.5mm terminal block
Operating Temperature -20°C to +75°C
Relative Humidity 0 to 95% non-condensing
1022251BP08

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OSD2251BP OPERATOR MANUAL
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1.3 PORT ALLOCATION
Front Panel: There are two fixed copper ports for 10/100/1000Base-T and two SFP ports.
Top Panel: The top panel consists of a 4-way 5.08mm terminal block power connector and a 4-way
3.5mm terminal block alarm connector.
Bottom Panel: 8-Way DIP switch, Mini USB connector and a Type-B USB connector.
Each section will be described further throughout this manual.
FIGURE 2: PORT ALLOCATION
Front Panel
Top Panel
Bottom Panel
Ring LEDPower LED
Activity LED x2
PoE LED x 2
Link LED x 2
RJ45 Port x 2
SFP Port x 2
Alarm Port
Dual Power Port
Console Port
Prog Port
Config Switches
Earth Screw

OPTICAL SYSTEMS DESIGN
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OSD2251BP OPERATOR MANUAL
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2INSTALLATION AND OPERATION
2.1 INTRODUCTION
This section outlines the methods required to install and operate the OSD2251BP successfully. It should
be studied carefully if damage to the equipment or poor results are to be avoided.
This equipment has been fully tested prior to dispatch and is ready for immediate operation. However it
is advisable to check for external transportation damage before operation. If damage is evident, return
the unit with the packaging to your supplier immediately.
2.2 INSTALLATION
2.2.1 WARNING AND PRECAUTIONS
▲ ELECTROMAGNETIC COMPATIBILITY
WARNING: This is a Class A product. In a domestic environment this product may cause radio
interference in which case the user may be required to take adequate measures.
▲ OPTICAL OUTPUT OPERATION
WARNING: Laser Safety: Class 1 Laser Product per IEC/EN 60825-1:2014 standard.
Class 1
The OSD2251BP is a Class 1 laser product.
PRECAUTIONS
▲ All service personnel should be provided training as to the hazards of direct viewing of laser
radiation and of the precautionary measures during servicing of equipment
▲ Areas where laser products are installed should be restricted in access to trained service
personnel only and appropriate warning signs posted in the work area.
▲ All laser apertures should be covered by protective covers when not connected to optical
fibers. Never leave outputs uncovered.
▲ Laser equipment should be positioned above or below eye level where possible. Apertures
should be positioned away from personnel.
▲ Protective eyewear should be worn in the vicinity of laser equipment.

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OSD2251BP OPERATOR MANUAL
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2.2.2 DRAWINGS AND DIMENSIONS
The OSD2251BP is designed to be surface mounted or wall mounted onto a DIN-Rail (35mm top hat)
fixture. The unit dimensions (excluding connectors, SFPs, etc) is shown in Figure 3 below;
FIGURE 3: MOUNTING DIMENSIONS
110mm
43mm
91mm

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OSD2251BP OPERATOR MANUAL
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2.2.3 LOCATION
The OSD2251BP should be placed where it will not be subjected to extreme temperatures, humidity, or
electromagnetic interference. Specifically, the site selected should meet the following requirements:
•The ambient temperature should be between -20°C to 75°C.
•The relative humidity should be less than 95 percent, non-condensing.
•Surrounding electrical devices should not exceed the electromagnetic field (RFC) standards.
•Make sure that the switch receives adequate ventilation. Do not block the ventilation holes on
any side of the switch.
Note: Without proper cooling and control (lowering) of ambient temperature, the components within
the OSD2251BP can be subject to increased heat shortening the longevity and reliability. It is thus
good engineering practice to ensure the unit is installed in a well ventilated area.
2.2.4 POWER SUPPLY CONNECTIONS
The OSD2251BP requires external power to the Redundant DC Terminal Block Power Connector
located at the top of the unit. Always ensure that the power is off before any installation.
Redundant DC Terminal Block Power Inputs
There are two pairs of power inputs for use with redundant power sources. Only one power input is
required to be connected to run the switch.
Step 1: Connect the DC power to the appropriate power source, connect the plug-able terminal block
on the OSD2251BP switch and then turn power on.
Step 2: Disconnect the power if you want to shut down the switch.
TABLE 2: DC OR AC POWER CONNECTION
External Power Pin Specification
Power 1: +46V
DC
to 57V
DC
@ 1.5A*
Power 1: 0V Ground – 0V
Power 2: +46V
DC
to 57V
DC
@ 1.5A*
Power 2: 0V Ground – 0V
Earth Ground Connection
* ≥52V
DC
recommended for PoE+ or ≥55V
DC
for 60W PoE
FIGURE 4: POWER SUPPLY CONNECTIONS

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OSD2251BP OPERATOR MANUAL
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2.2.5 ALARM CONNECTION
The OSD2251BP has two monitoring alarm outputs: 1) Ring to Bus Alarm and 2) Temperature Alarm.
The alarm connections and conditions for alarm outputs are as set out in Table 3. There are four pins on
the 3.5mm terminal block used alarm output. Maximum ratings the OSD2251BP relay can drive is
100mA @ 46V
(max)
. Note: Alarm output has no polarity.
TABLE 3: ALARM CONNECTIONS
Alarm
Output Alarm1 Ring /Bus Status Alarm CH2 Temperature
Open Ring Less than 90°C
Closed Bus* Higher than 90°C
*Note: Bus alarm is only triggered after a ring connection is established.
FIGURE 5: ALARM OUTPUTS
FIGURE 6: CONTACT CLOSURE OUTPUT
Alm1
Alm2
OSD2251BP

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OSD2251BP OPERATOR MANUAL
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2.2.6 USB CONNECTOR
The OSD2251BP has a USB – Type B connector located on the bottom of the unit that is used for
Command Line Interface (CLI) from the PC to the OSD2251BP via the PC’s USB connector. See
section 2.5 for further CLI information.
FIGURE 7: USB TYPE B CLI PORT
To operate and control the OSD2251BP using the CLI, a proprietary driver will be required to be
installed onto the PC being used. The driver can be found and downloaded via the following site:
www.silabs.com and searching for the CP210x driver. Download the relevant driver for your operating
system, install and follow the installation instructions from your PC.
FIGURE 8: CLI DRIVER DOWNLOAD
USB Type B - CLI Port

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OSD2251BP OPERATOR MANUAL
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2.2.7 LED INDICATORS
FIGURE 9: LED INDICATORS
TABLE 4: LED FUNCTION
No
Function LED Colour Function
On Blink Off Green Gr/Am Amber

Power - No Power On - -

Ring/Bus Initial
Unmanaged
Mode/
Programming
Ring Initializing Bus

- Activity No Activity 1Gbps/100Mbps - -

Load
Detect - No Load LD - -

Link - No Link - - On

Link Activity No Link 1Gbps - 100Mbps

Power 1 - No Power On - -

Power 2 - No Power On - -












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2.2.8 CONTROLS
The OSD2251BP has an 8-way DIP switch to control a number of functions. Table 5 outlines the
function of each switch.
FIGURE 10: SWITCH CONTROLS
FIGURE 11: 8-WAY DIP SWITCH
TABLE 5: 8-WAY DIP SWITCH SETTINGS
SWITCH
NUMBER DESCRIPTION FUNCTION SWITCH POSITION
1 Not used OFF*
2 Not used OFF*
3 Not used OFF*
4 Not used - OFF*
5 Ring/Non Ring Mode Non Ring Mode ON
Ring Mode OFF*
6 Port 3 Fiber Speed 100Mbps ON
1Gbps OFF*
7 Port 4 Fiber Speed 100Mbps ON
1Gbps OFF*
8 Reserved - OFF*
* Default settings.
Note: The unit requires a power cycle (Off/On) for any switch position change to take effect.
ON
OFF
1 2 3 4 5 6 7 8

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2.2.9 FITTING SFP CONNECTORS
Care should be taken when inserting/removing the SFP connectors from SFP port 3 and 4as SFP
modules are Electrostatic (ES) sensitive and Electrostatic Discharge (ESD) precautions should be taken
when installing. Ensure that the SFP is fully engaged and latched into position.
Inserting SFP – Ensure that the SFP lever is in the locked position and insert into appropriate SFP
port. Gently push the SFP until it locks into place. Remove plastic/rubber dust cap and fit fiber cable or
RJ45 plug.
Removing SFP – Remove fiber connector or RJ45 plug. Pull the SFP lever down to unlock SFP from
housing. Using the lever, gently pull the SFP out.
Fiber SFP
Copper SFP
FIGURE 12: FITTING/REMOVING SFP CONNECTORS
Inserting
SFP
Removing
SFP
1
2
Inserting
SFP
Removing
SFP
1
2

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2.3 OPERATION
When using the OSD2251BP for the first time, check that the unit is in good condition with no visible
damage.
Upon power up check that the indicators illuminate accordingly on power up (see Table 4).
2.3.1 CONNECTIONS
For RJ45 connection use Category 5 (CAT5) or higher. Length should be no more than 100 meters.
For singlemode fiber connections, fiber used must be 9/125µm singlemode fiber.
For multimode fiber connections, fiber used must be 50/125µm or 62/125µm multimode fiber.
Plug in the appropriate connectors for system configuration;
–RJ45 cable to fixed copper ports (port 1 and 2) and copper SFP modules
–LC or SC fiber cable to fiber SFP modules.
Redundant Ring Operation
The OSD2251BP connected in a redundant ring topology providing maximum reliability on critical
networks. In the event of device or fiber failure the data path will automatically switch to a secondary
path in less than 2ms per node to maintain ring network integrity.
FIGURE 13: REDUNDANT RING CONFIGURATION

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To connect the OSD2251BP in a redundant ring configuration ports 3 and 4 must be used together with
fiber SFPs. The non-ring ports (ports 1 & 2) should be used to connect to your Ethernet devices (eg.
Cameras, PLCs, computers, etc.)
Figure 14 shows the connection method. Typically the SFP used would be a fiber 1G (1000Mbps) SFP
with duplex LC connectors. 100Mbps operation is also available for MMOF setups. The dashed line
indicates the closed loop, but more OSD2251BP units can be connected to the ring as required using
this topology. Ensure that the switch settings for port 3 and 4 are set to the appropriate SFP speed used
– see Table 5.
FIGURE 14: REDUNDANT RING CONNECTION
Bus Operation
To connect the OSD2251BP in a bus configuration ports 3 and 4 must be used together with fiber
SFPs. The remaining ports (ports 1 & 2) should be used to connect to your Ethernet devices (eg.
Cameras, PLCs, computers, etc.)
FIGURE 15: BUS CONNECTION
Connect more OSD2251BP units as required using this topology
Connect more OSD2251BP units as required using this topology
Connect more OSD2251BP units as required using this topology

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2.4 MINI USB PORT
The Mini USB Port is used for uploading firmware updates. All OSD2251BP units will be shipped
with the latest firmware already installed. This port has no function for end user.
FIGURE 16: MINI USB CONNECTOR
Mini USB Port

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OSD2251BP OPERATOR MANUAL
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2.5 COMMAND LINE INTERFACE
The Command Line Interface (CLI) is a useful tool for checking link status and debugging link
connections. To enable the use of CLI the OSD2251BP must be connected to a PC with a serial port
and an appropriate cable as specified in section 2.2.6. Using a terminal emulation program such as
Hyperterminal, a number of command lines specific to the OSD2251BP can be implemented to check
link/node status, ring/bus topology and enable/disable float backup.
2.5.1 TERMINAL EMULATION SETUP
Using a terminal emulation program such as hyperterminal the following parameters should be set up
for correct command line operation. Select the appropriate “COM port” set up for the serial port.
FIGURE 17: SERIAL PORT SETTINGS