Optical Systems Design OSD2251EP Series User manual

OPERATOR MANUAL
OSD2251EP SERIES
Lite Managed 4-Port Ethernet Switch with
SNMP & VLAN
2 x 10/100/1000Base-T with PoE++ & 2 x
Gigabit SFP

OPTICAL SYSTEMS DESIGN
DOC ID: 10119901
OSD2251EP OPERATOR MANUAL
PAGE 3
INDEX 1
1TECHNICAL SUMMARY ........................................................................................................5
1.1 BRIEF DESCRIPTION.............................................................................................................5
1.1.1 OVERVIEW.............................................................................................................................................5
1.1.2 FEATURES AND BENEFITS.................................................................................................................5
1.2 TYPICAL SYSTEM DESIGN..................................................................................................6
1.3 TECHNICAL SPECIFICATIONS............................................................................................7
1.4 PORT ALLOCATION..............................................................................................................8
2INSTALLATION 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 MINI USB PORT...................................................................................................................................14
2.2.8 LED INDICATORS ...............................................................................................................................15
2.2.9 CONTROLS...........................................................................................................................................16
2.2.10 FITTING SFP CONNECTORS .........................................................................................................18
2.3 OPERATION..........................................................................................................................19
2.3.1 CONNECTIONS....................................................................................................................................19
2.4 COMMAND LINE INTERFACE...........................................................................................21
2.4.1 TERMINAL EMULATION SETUP......................................................................................................21
2.4.2 COMMAND LINE FUNCTIONS..........................................................................................................22
3WEB GUI...................................................................................................................................39
3.1.1 LOGGING ON TO THE SWITCH ........................................................................................................40
3.1.2 GUI MENU ............................................................................................................................................41
4MAINTENANCE......................................................................................................................62
4.1 INTRODUCTION...................................................................................................................62
4.2 EXTERNAL INSPECTION....................................................................................................62
4.3 ROUTINE MAINTENANCE .................................................................................................62
5WARRANTY.............................................................................................................................63
5.1 WARRANTY PERIOD ..........................................................................................................63
5.2 REPAIRS ................................................................................................................................63
5.2.1 WARRANTY REPAIRS........................................................................................................................63
5.2.2 OUT-OF-WARRANTY REPAIRS........................................................................................................63
5.2.3 SITE REPAIRS ......................................................................................................................................63
5.2.4 EXCLUSIONS .......................................................................................................................................63
FIGURE 1: TYPICAL RING CONFIGURATION..................................................................................6
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 INSTALLATION.........................................................................................................13
FIGURE 9: USB CONNECTOR............................................................................................................14
FIGURE 10: PORT/LED........................................................................................................................15
FIGURE 11: CONTROLS......................................................................................................................16
FIGURE 12: 8-WAY DIP SWITCH.......................................................................................................16
FIGURE 13: FITTING/REMOVING SFP CONNECTORS..................................................................18
FIGURE 14: REDUNDANT RING CONFIGURATION......................................................................19

OPTICAL SYSTEMS DESIGN
DOC ID: 10119901
OSD2251EP OPERATOR MANUAL
PAGE 4
FIGURE 15: REDUNDANT RING CONNECTION.............................................................................20
FIGURE 16: BUS CONNECTION ........................................................................................................20
FIGURE 17: SERIAL PORT SETTINGS..............................................................................................21
FIGURE 18: VERSION CHECK ...........................................................................................................23
FIGURE 19: FACTORY DEFAULT SETTING....................................................................................24
FIGURE 20: IP CONFIGURATION......................................................................................................25
FIGURE 21: TOPOLOGY CHECK.......................................................................................................26
FIGURE 22: TOPOLOGY CHECK.......................................................................................................27
FIGURE 23: NODE CHECK..................................................................................................................28
FIGURE 24: LOCAL NODE CHECK ...................................................................................................29
FIGURE 25: FLOAT BACKUP ENABLED 1.......................................................................................30
FIGURE 26: RING TOPOLOGY...........................................................................................................30
FIGURE 27: FLOAT BACKUP ENABLED 2.......................................................................................31
FIGURE 28: FLOAT BACKUP ENABLED 3.......................................................................................31
FIGURE 29: FLOAT BACKUP DISABLED 1......................................................................................32
FIGURE 30: FLOAT BACKUP DISABLED 2......................................................................................33
FIGURE 31: FLOAT BACKUP DISABLED 3......................................................................................33
FIGURE 32: NODE IP SET ...................................................................................................................34
FIGURE 33: NODE ALL CHECK.........................................................................................................34
FIGURE 34: REBOOT...........................................................................................................................35
FIGURE 35: SNMP................................................................................................................................36
FIGURE 36: SNMP MENU....................................................................................................................37
FIGURE 37: PORT CONTROL.............................................................................................................38
TABLE 1: TECHNICAL SPECIFICATIONS .........................................................................................7
TABLE 2: DC OR AC POWER CONNECTION ..................................................................................11
TABLE 3: ALARM CONNECTIONS...................................................................................................12
TABLE 4: LED FUNCTION..................................................................................................................15
TABLE 5: 8-WAY DIP SWITCH SETTINGS ......................................................................................16
TABLE 6: POE MODE SWITCH SETTINGS ......................................................................................17
TABLE 7: TERMINAL COMMAND LINES........................................................................................22

OPTICAL SYSTEMS DESIGN
DOC ID: 10119901
OSD2251EP OPERATOR MANUAL
PAGE 5
1TECHNICAL SUMMARY
1.1 BRIEF DESCRIPTION
1.1.1 OVERVIEW
The OSD2251EP is a 4-port lite managed switch with two Gigabit RJ45 and two Gigabit SFP uplink ports which can
be used as standard ports or as a redundant fiber ring using OSD’s proprietary ring protocol. Each RJ45 can provide
up to 60W PoE to power a wide range of devices. Along with higher level features including VLAN and IGMP
snooping the OSD2251EP is suitable for use in critical networks. A rugged IP30 casing, fan-less design and wide
operating temperature range from -40 to +75ºC make it suitable for use in a wide range of harsh industrial
environments.
1.1.2 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)
▲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
via plug in SFP module (sold separately)
▲Supports IEEE802.3af/at Alternative A and B
cable wiring
▲Complies with IEEE802.3af/at standard
including compliant powered device (PD)
signature detection and classification
▲Provides up to 60W to each RJ45 port. Single
and Dual signature PD detection with PoE
configuration via DIP switch or GUI
▲Auto-Negotiation for half or full duplex
operation
▲Powered by non-critical 46 to 57VDC supplies
with dual power supply inputs
▲Integrates with third party NMS system via
industry standard SNMP v1, v2, v3 snooping
▲Remote PoE on/off control and status
monitoring
▲Redundant ring operation is compatible on all
OSD225* series Gigabit Ethernet switches
▲Operates over the temperature range of -40°C
to +75°C
▲DIN rail or wall mounting
▲Available for operation in ring or point to point
configuration

OPTICAL SYSTEMS DESIGN
DOC ID: 10119201
OSD2251EP OPERATOR MANUAL
PAGE 6
1.2 TYPICAL SYSTEM DESIGN
Figure 1 below indicates a possible set-up for an OSD2251EP system.
FIGURE 1: TYPICAL RING CONFIGURATION

OPTICAL SYSTEMS DESIGN
DOC ID: 10119201
OSD2251EP OPERATOR MANUAL
PAGE 7
1.3 TECHNICAL SPECIFICATIONS
TABLE 1: TECHNICAL SPECIFICATIONS
Hardware
Ethernet
2 x 10/100/1000Base-T RJ45, IEEE802.3i/802.3u/802.3ab
Data Rate
10, 100, 1000Mbps, auto negotiate, auto MDIX
Jumbo Frame Support
10KB
SFP
2 x Gigabit SFP ports (100Mbps or 1000Mbps user selectable)
Optical Data Interface
IEEE802.3z 1000Base-Lx/Sx, IEEE802.3u 100Base-Fx
Enclosure Protection Class
IP30
Installation
DIN rail, wall mount or desktop
Alarm (ring version only)
Ring to Bus, High Temperature
Alarm Interface
Opto isolated MOSFET rated at 100mA @ 46V maximum
Alarm Connector
4 way 3.5mm terminal block
DIP Switch
8 way DIP switch for configuration
Power Requirements
+46V to +57V DC (>52VDC recommended for >30W PoE)
Power Connector
4 way 5.08mm terminal block
Indicators
2 x Copper Link on each RJ45
2 x Copper Activity on each RJ45
2 x PoE Operation on each RJ45
2 x SFP Speed/Activity/Link on each SFP
1 x Initialise/Ring/Bus
1 x Power
Environmental
-40 to +75ºC
Relative Humidity
0 to 95% non-condensing
Dimensions
43W x 91D x 110H mm
Weight
540g
Management
Interfaces
Command Line Interface (CLI mini USB)
Web browser based Graphical User Interface (GUI) (Chrome or
Edge browser)
SNMP v1, v2c, v3
Port Configuration
Port enable/disable, Auto negotiation
Port Status
Speed, duplex mode, link status
VLAN
802.1Q VLAN
Multicast Protocol
RFC 2236 IGMP snooping v1, v2, v3
Ethernet Redundancy
OSD-Ring
SNMP MIBs
RFC 1213 MIB
Private MIB Framework
Contact OSD for full list of available MIB’s
Warranty
Warranty Period
5 years
MTBF (Ground Benign Environment,
30ºC)
610,000 hours

OPTICAL SYSTEMS DESIGN
DOC ID: 10119201
OSD2251EP OPERATOR MANUAL
PAGE 8
1.4 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, Type-A 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 LED
Power 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
Programming
Port
Configuration
Switches
Earth Screw

OPTICAL SYSTEMS DESIGN
DOC ID: 10119201
OSD2251EP OPERATOR MANUAL
PAGE 9
2INSTALLATION AND OPERATION
2.1 INTRODUCTION
This section outlines the methods required to install and operate the OSD2251EP 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 OSD2251EP 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.

OPTICAL SYSTEMS DESIGN
DOC ID: 10119201
OSD2251EP OPERATOR MANUAL
PAGE 10
2.2.2 DRAWINGS AND DIMENSIONS
The OSD2251EP is designed to be wall mounted onto a DIN-Rail (35mm top hat) fixture or by using 4
x M4 captivated screws (DIN Rail mount requires removal and flanges repositioned –see below). The
unit dimensions (excluding connectors, SFPs, etc) is shown in Figure 3 below.
DIN Mount Wall Mount
DIN to Wall Mount Conversion
FIGURE 3: MOUNTING DIMENSIONS
Unscrew x 4
Remove
DIN
Unscrew x 2
(Top & Bottom)
Rotate
Screw x 2
(Top & Bottom)

OPTICAL SYSTEMS DESIGN
DOC ID: 10119201
OSD2251EP OPERATOR MANUAL
PAGE 11
2.2.3 LOCATION
As with any electrical device, the OSD2251EP should be placed where the switch 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 -40°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.
2.2.4 POWER SUPPLY CONNECTIONS
The OSD2251EP 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 OSD2251EP 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 +
+46 to 57VDc
Power 1 0V
Ground –0V
Power 2 +
+46 to 57VDC
Power 2 0V
Ground –0V
Earth Ground Connection
FIGURE 4: POWER SUPPLY CONNECTIONS

OPTICAL SYSTEMS DESIGN
DOC ID: 10119201
OSD2251EP OPERATOR MANUAL
PAGE 12
2.2.5 ALARM CONNECTION
The OSD2251EP 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 OSD2251EP 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
OSD2251EP

OPTICAL SYSTEMS DESIGN
DOC ID: 10119201
OSD2251EP OPERATOR MANUAL
PAGE 13
2.2.6 USB CONNECTOR
The OSD2251EP 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 OSD2251EP via the PC’s USB connector. See
section 2.4 for further CLI information.
FIGURE 7: USB TYPE B CLI PORT
To operate and control the OSD2251EP 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 INSTALLATION
USB Type B - CLI Port

OPTICAL SYSTEMS DESIGN
DOC ID: 10119201
OSD2251EP OPERATOR MANUAL
PAGE 14
2.2.7 MINI USB PORT
The Mini USB Port is used for uploading firmware updates. All OSD2251EP units will be shipped with
the latest firmware already installed. This port has no function for end user.
FIGURE 9: USB CONNECTOR
Mini USB Port

OPTICAL SYSTEMS DESIGN
DOC ID: 10119201
OSD2251EP OPERATOR MANUAL
PAGE 15
2.2.8 LED INDICATORS
FIGURE 10: PORT/LED
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
-
-












OPTICAL SYSTEMS DESIGN
DOC ID: 10119201
OSD2251EP OPERATOR MANUAL
PAGE 16
2.2.9 CONTROLS
The OSD2251EP has an 8-way DIP switch to control a number of functions. Table 5 outlines the
function of each switch.
FIGURE 11: CONTROLS
FIGURE 12: 8-WAY DIP SWITCH
TABLE 5: 8-WAY DIP SWITCH SETTINGS
SWITCH
NUMBER
DESCRIPTION
FUNCTION
SWITCH
POSITION
1
GUI
Enabled
Disabled
ON*
OFFϯ
2
PoE Mode [2]
See Table 6 for PoE Mode Function
OFF*
3
PoE Mode [1]
See Table 6 for PoE Mode Function
OFF*
4
PoE Mode [0]
See Table 6 for PoE Mode Function
OFF*
5
Ring/Bus
Non-Ring
Ring
ON
OFF*
6
Port 3 Fiber Speed
100Mbps
1000Mbps
ON
OFF*
7
Port 4 Fiber Speed
100Mbps
1000Mbps
ON
OFF*
8
Programming Mode
Programming Mode
Normal Operation
ON
OFF*
* Default settings.
ϮAt Off position and power-up, unit will switch to 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
8-Way DIP Switch

OPTICAL SYSTEMS DESIGN
DOC ID: 10119201
OSD2251EP OPERATOR MANUAL
PAGE 17
TABLE 6: POE MODE SWITCH SETTINGS
PoE
[2]
PoE
[1]
PoE
[0]
PoE Function
0
0
0
802.3at/af Standard Mode (Default Setting)
0
0
1
Detection & Classification on one channel. Power supply on one channel
0
1
0
Detection & Classification on one channel. Power supply on one channel,
Legacy device feature enabled
0
1
1
Reserved Mode
1
0
0
Detection & Classification on one channel. Power supply on two channels
1
0
1
Detection & Classification on one channel. Power supply on two channels.
Inrush current feature enabled.
1
1
0
Detection & Classification on two channels. Power supply on two channels.
1
1
1
Reserved Mode
Ch0: Pins 1,2 and Pins 3,6 on RJ45
Ch1: Pins 4,5 and Pins 7,8 on RJ45
For manually controlled modes (apart from 802.3at/af standard mode: 000), power limitation rules are
as follows:
For 60W device:
One PoE channel provides power (mode 001, 010): Max output power is 45W
Two PoE channels provide power (mode 100, 101, 110): Max output power is 70W
For 90W device:
One PoE channel provides power (mode 001, 010): Max output power is 45W
Two PoE channels provide power (mode 100, 101, 110): Max output power is 90W
For 802.3at/af standard mode (000), power limitation follows the classification result ie 802.3at/af
standard.
For reserved modes (011, 111), PoE function is disabled on each port.

OPTICAL SYSTEMS DESIGN
DOC ID: 10119201
OSD2251EP OPERATOR MANUAL
PAGE 18
2.2.10 FITTING SFP CONNECTORS
Care should be taken when inserting/removing the SFP connectors from SFP port 3 and 4 as 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 13: FITTING/REMOVING SFP CONNECTORS
Inserting
SFP
Removing
SFP
1
2
Inserting
SFP
Removing
SFP
1
2

OPTICAL SYSTEMS DESIGN
DOC ID: 10119201
OSD2251EP OPERATOR MANUAL
PAGE 19
2.3 OPERATION
When using the OSD2251EP 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 OSD2251EP connected in a redundant ring topology providing maximum reliability on critical
networks (up to 64 nodes per ring). 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 14: REDUNDANT RING CONFIGURATION

OPTICAL SYSTEMS DESIGN
DOC ID: 10119201
OSD2251EP OPERATOR MANUAL
PAGE 20
To connect the OSD2251EP 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 15 shows the connection method. Typically the SFP used would be a fiber SFP with duplex LC
connectors. The dashed line indicates the closed loop, but more OSD2251EP units can be connected to
the ring as required using this topology. Ensure that the switch settings for port 4 and 5 are set to
1000Mbps (1Gbps) –see Table 5.
FIGURE 15: REDUNDANT RING CONNECTION
Bus Operation
To connect the OSD2251EP 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 16: BUS CONNECTION
Connect more OSD2251EP units as required using this topology
Connect more OSD2251EP units as required using this topology