Transition Networks SM12DP2XA-NA User manual

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SM12DP2XA
Managed Gigabit Ethernet Fiber Switch
(12) 100/1000Base-X SFP Slots + (2) 1G/10G SFP+ slots +
(2) 10/100/1000Base-T
Install Guide
33751 Rev. E

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Trademarks
All trademarks and registered trademarks are the property of their respective owners.
Copyright Notice/Restrictions
Copyright© 2018-2020 Transition Networks. All rights reserved. No part of this work may be reproduced or used
in any form or by any means (graphic, electronic or mechanical) without written permission from Transition
Networks. Printed in the U.S.A.
SM12DP2XA Managed Gigabit Ethernet Fiber Switch Install Guide 33751 Rev. E
Contact Information
Transition Networks
10900 Red Circle Drive
Minnetonka, MN 55343 USA
tel: [phone] | toll free: 1.800.526.9267 | fax: [phone]
[email protected]om |techsupp[email protected] |[e-mail]
Revision History
Rev
Date
Description
A
6/25/18
Initial release at FW v7.10. 1423 2018-05-16.
B
7/27/18
Update DC Input terminal and compliance information.
C
8/22/18
Correct the default IP address.
D
1/20/20
Update for FW v v7.10. 2307; add Traffic Monitor back to DMS and update DC
power supply information.
E
6/15/20
FW v7.10.2544: add Rapid Ring and Auto-logout features and ordering
information.

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Cautions and Warnings
Definitions
Cautions indicate that there is the possibility of poor equipment performance or potential damage to the
equipment. Warnings indicate that there is the possibility of injury to person.
Cautions and Warnings appear here and may appear throughout this manual where appropriate. Failure to read
and understand the information identified by this symbol could result in poor equipment performance, damage
to the equipment, or injury to persons.
Cautions
While installing or servicing the power module, wear a grounding device and observe all electrostatic
discharge precautions. Failure to observe this caution could result in damage to, or failure of the power
module.
Warnings
Warning: Do not connect the power module to an external power source before installing it into the chassis.
Failure to observe this warning could result in an electrical shock, even death.
WARNING: Equipment grounding is vital to ensure safe operation. The installer must ensure that the power
module is properly grounded during and after installation. Failure to observe this warning could result in an
electric shock, even death.
WARNING: A readily accessible, suitable National Electrical Code (NEC) or local electrical code approved
disconnect device and branch-circuit protector must be part of the building's installed wiring to accommodate
permanently connected equipment. Failure to observe this warning could result in an electric shock, even death.
WARNING: Turn any external power source OFF and ensure that the power module is disconnected from the
external power source before performing any maintenance. Failure to observe this warning could result in an
electrical shock, even death.
WARNING: Ensure that the disconnect device for the external power source is OPEN (turned OFF) before
disconnecting or connecting the power leads to the power module. Failure to observe this warning could result in
an electric shock, even death.
See Electrical Safety Warnings on page 31 for Electrical Safety Warnings translated into multiple languages.

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Contents
Introduction .................................................................................................................................................................6
Safety Statements ........................................................................................................................................................6
Features .......................................................................................................................................................................7
Benefits ........................................................................................................................................................................7
Specifications ...............................................................................................................................................................8
Switch Architecture....................................................................................................................................................12
Network Management Options .................................................................................................................................12
About This Manual.....................................................................................................................................................12
Related Manuals ........................................................................................................................................................13
For More Information ................................................................................................................................................13
Front Panel.................................................................................................................................................................14
1000BASE-T Ports...................................................................................................................................................14
SFP and SFP+ Transceiver Slots ..............................................................................................................................14
CONSOLE Port ........................................................................................................................................................14
Front Panel LEDs ....................................................................................................................................................15
Port Status LEDs .....................................................................................................................................................15
System Status LEDs ................................................................................................................................................15
RST (Reset) Button .................................................................................................................................................16
Power Supply Inputs ..............................................................................................................................................16
Installation .................................................................................................................................................................17
Site Selection..........................................................................................................................................................17
Unpacking ..............................................................................................................................................................17
Package Contents...................................................................................................................................................18
Mounting................................................................................................................................................................18
Rack Mounting ...................................................................................................................................................18
Desktop or Shelf Mounting ................................................................................................................................19
Ethernet Cabling.....................................................................................................................................................20
Installing an Optional SFP Transceiver...................................................................................................................21
To Install an SFP transceiver ..............................................................................................................................22
Connecting to Power..............................................................................................................................................23
Connecting to an AC Power Source ...................................................................................................................23
Connecting to a DC Power Source .....................................................................................................................23
Connecting to Both AC and DC Power ...............................................................................................................23
Initial Switch Configuration........................................................................................................................................24
CLI Configuration....................................................................................................................................................24
Web UI Configuration ............................................................................................................................................24
Troubleshooting, Warranty, Support and Compliance..............................................................................................25
General Troubleshooting .......................................................................................................................................25
LED Troubleshooting..............................................................................................................................................26
Device Label and Packaging Label..........................................................................................................................26
Recording Device and System Information................................................................................................................27

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Limited Lifetime Warranty .....................................................................................................................................28
Contact Us..............................................................................................................................................................28
Technical Support...............................................................................................................................................28
Compliance Information ............................................................................................................................................29
FCC Regulations......................................................................................................................................................29
Canadian Regulations.............................................................................................................................................29
Declaration of Conformity (DoC) ...........................................................................................................................29
High Risk Activities Disclaimer ...............................................................................................................................30
Electrical Safety Warnings..........................................................................................................................................31
Electrical Safety..................................................................................................................................................31
Elektrische Sicherheit.........................................................................................................................................31
Elektrisk sikkerhed .............................................................................................................................................31
Elektrische veiligheid..........................................................................................................................................31
Sécurité électrique .............................................................................................................................................31
Sähköturvallisuus ...............................................................................................................................................31
Sicurezza elettrica ..............................................................................................................................................31
Elektrisk sikkerhet ..............................................................................................................................................31
Segurança eléctrica ............................................................................................................................................31
Seguridad eléctrica.............................................................................................................................................31
Elsäkerhet...........................................................................................................................................................31

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Introduction
The SM12DP2XA Managed Gigabit Ethernet Fiber Switch is a next-generation Fiber Switch offering full suite of L2
features and additional 10GbE uplink connections. Advanced L3 features such as Static Route deliver better cost
performance and lower total cost of ownership in Enterprise networks or backbone via fibber or copper
connections.
The SM12DP2XA provides 12 GbE SFP ports, 2 RJ45 ports, 2 10GbE SFP+ ports and RJ45 Console port with built-in
AC and DC dual power supplies. SM12DP2XA provides front panel access to all power, data, and management
ports, in a compact form factor for desktop, wall-mount, or rack-mount installations.
The SM12DP2XA delivers management simplicity, better user experience, and lowest total cost of ownership.
The built-in Device Managed System (DMS) is designed to be extremely easy to use, manage, and install IP Phones,
IP Cameras, or Wifi-APs for Enterprise applications.
Safety Statements
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:
• 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 use an outdoor device connected to this device with cable, then you must use an arrester
on the cable between outdoor device and this device.
NOTE: The switch is an indoor device; if it will be used in an outdoor environment or to connect with an
outdoor device, then it must use a lightning arrester to protect the switch
WARNING:
• Self-demolition of this product is strictly prohibited. Damage caused by self-demolition will be charged for
repairing fees. See the US EPA Electronics Donation and Recycling website.
• Do not place product outdoors.
• Before installation, make sure input power supply and product specifications are compatible.
• To reduce the risk of electric shock, disconnect all AC or DC power cord and PS cables to completely
remove power from the unit.
• Before importing / exporting a configuration make sure the firmware version is the same.
• After a firmware upgrade, the switch will automatically set the configuration to the latest version.
Notices: Not Designed for Use in Life Support Equipment or Applications: These products are not designed for use
in life support equipment or applications that would cause a life-threatening situation if any such product failed.
Do not use this product in these types of equipment or applications.
ERN # : ERN # (Encryption Registration Number) R111839 (self-declaring).

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Features
• DMS (Device Management System) embedded
• Support Jumbo Frame up to 10200 bytes
• Authentication –RADIUS, TACACS+
• IEEE 802.1X: RADIUS authentication, authorization and accounting, MD5 hash, guest VLAN,
single/multiple host mode and single/multiple sessions
• DHCP Relay, DHCP Option 82, DHCP Snooping, DHCP Server, DHCP Per Port
• L2/L3/L4 ACLs support MAC, VLAN ID or IP, protocol, port, DSCP/IP precedence/TCP.UDP, Ether Type,
ICMP, TCP flag
• LLDP (Link Layer Discovery Protocol)
• IP Source Guard, Port Security
• Port Mirroring
• Firmware Update via TFTP/HTTP and console
• Syslog
• 1RU high, compact form factor
• Extended operating temperature: -20°C to + 60°C
• Rapid Ring and Spanning Tree (STP, MST, and RSTP)
Benefits
⚫ Feature-rich Ethernet Switch for Enterprise-class: The switch delivers advanced functionality in L2+
managed switch including Layer 3 static route, DHCP server, IPv6 support, LLDP, etc. It also has
comprehensive security features such as IP source guard and Access Control List to guard your network
from unauthorized access. It builds on the market-leading price/performance with L2+ Managed GbE fiber
switch, and provide secure, reliable and ease of use for enterprise and SMB deployments.
⚫ Easy to Install, Configure and Troubleshoot by DMS: The DMS (Device Management System) provides
embedded functions to facilitate device management anytime and anywhere. Its user-friendly interface
helps you manage devices intuitively. It supports various IP device types (e.g. IP phone, IP camera, WAP)
to enhance manageability and save time/cost during installation/maintenance stages.
⚫ Lower Total Cost of Ownership (TCO) with Energy-efficient Design: It is designed to help customers to
reduce power consumption and lower the TCO by Energy Efficient Ethernet (IEEE 802.3az) features. It can
be used to build a green Ethernet networking environment.
⚫ AC/DC Dual Power Supply: Power failover when power supplies are connected to different circuits to help
reduce network operating risk.
Ordering Information
SKU
Description
SM12DP2XA
(12) 100/1000Base-X SFP slots + (2) 1G/10GBase-X SFP+ slots + (2) 10/100/1000Base-T RJ-45
ports (includes 19” rack mount brackets)
Optional Accessories (sold separately)
25130
Power Supply; Input: 88 -264VDC, 120-370VDC; Output: 48VDC, 39.8 Watts, -20°C to +70°C
SFP Modules
See Transition Networks SFP webpage or SFP+ webpage.

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Specifications
Port Configuration
Total Ports
SFP (100M/1G)
Uplinks (100M/1G/10G)
Console
16
12
2 SFP+ (1G/10G)
2 RJ45 (100M/1G)
RJ45
Hardware Performance
Forwarding
Capacity
Switching Capacity
Backplane
Mac Table
Jumbo Frames
50.592 Mpps
68 Gbps
68 Gbps
32756
10200 Bytes
Environmental Range
Operating Temperature
Storage Temperature
Altitude
Fahrenheit
Centigrade
Fahrenheit
Centigrade
Feet
Meters
-4° to +140°
-20° to+ 60°
-4° to +158°
-20° to +70°
< 10000
< 3000
Dimensions, Weights, Humidity
Dimensions (WxHxD)
Weight
Operating Humidity
Millimeter
Inches
Kilograms
Pounds
280 x 44 x 134
11 x 1.73 x 5.28
1.0
2.2
10% to 90%
non-condensing
Voltage and Frequency
Model Name
AC Input Voltage
DC Input Voltage
Power Consumption
SM12DP2XA
100-240 VAC, 50-60 Hz
24-48 VDC
24 Watts (max)
Certifications
Electromagnetic Emissions (EMC)
FCC Class A, CE Safety: UL Listed
MTBF
Model
MTBF
Environment
SM12DP2XA
270, 787 Hrs.
GB, GC - Ground Benign, Controlled. Temp: 25.00 deg. C.
SM12DP2XA
58,838 Hrs.
GB, GC - Ground Benign, Controlled. Temp: 75.00 deg. C.

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Software Features
Layer 2 Switching
Spanning Tree
Protocol (STP)
⚫ Standard Spanning Tree 802.1d
⚫ Rapid Spanning Tree (RSTP) 802.1w
⚫ Multiple Spanning Tree (MSTP) 802.1s
Trunking
Link Aggregation Control Protocol (LACP) IEEE 802.3ad
⚫ Up to 8 groups
⚫ Up to 8 ports per group
VLAN
Supports up to 4K VLANs simultaneously (out of 4096 VLAN IDs)
⚫ Port-based VLAN
⚫ 802.1Q tag-based VLAN
⚫ MAC-based VLAN
⚫ Management VLAN
⚫ Private VLAN Edge (PVE)
⚫ Q-in-Q (double tag) VLAN
⚫ Voice VLAN
⚫ GARP VLAN Registration Protocol (GVRP)
DHCP Relay
⚫ Relay of DHCP traffic to DHCP server in different VLAN.
⚫ Works with DHCP Option 82
IGMP v1/v2/v3
Snooping
IGMP limits bandwidth-intensive multicast traffic to only the requesters. Supports
1024 multicast groups
IGMP Querier
IGMP querier is used to support a Layer 2 multicast domain of snooping switches in
the absence of a multicast router
IGMP Proxy
IGMP snooping with proxy reporting or report suppression actively filters IGMP
packets in order to reduce load on the multicast router
MLD v1/v2 Snooping
Delivers IPv6 multicast packets only to the required receivers
Device Management System (DMS)
DMS
Topology View, Floor View, Map View, Dashboard, Traffic Monitoring, Cable
Diagnostics, Google Map API Key
Graphical
Monitoring
⚫ Topology view: Support intuitive way to configure and manage switches and
devices with visual relations
⚫ Floor view: It’s easy to drag and drop devices and to help build smart workforces
⚫ Map view: Enhance efficiency to drag and drop devices and monitor surroundings
on Google Maps
Find my Switch
Search your real switches quickly and manage directly.
Traffic Monitoring
Display visual chart of network traffic of all devices and monitor every port at any time
from switches
Troubleshooting
⚫ Network diagnostic between master switch and devices
⚫ Support protection mechanism, such as rate-limiting to protect your devices from
brute-force downloading

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Layer 3 Switching
IPv4 Static Routing
IPv4 Unicast: Static routing
IPv6 Static Routing
IPv6 Unicast: Static routing
Security
Secure Shell (SSH)
SSH secures Telnet traffic in or out of the switch, SSH v1 and v2 are supported
Secure Sockets Layer
(SSL)
SSL encrypts the http traffic, allowing advanced secure access to the browser-based
management GUI in the switch
IEEE 802.1X
⚫ IEEE802.1X: RADIUS authentication, authorization and accounting, MD5 hash,
guest VLAN, single/multiple host mode and single/multiple sessions
⚫ Supports IGMP-RADIUS based 802.1X
⚫ Dynamic VLAN assignment
Layer 2 Isolation
(Private VLAN Edge)
PVE (aka “protected ports”) provides L2 isolation between clients in the same VLAN.
Supports multiple uplinks. Layer 2 Isolation prevents communication between wired
and wireless clients in the network. It prevents any wireless or wired subscriber from
being able to communicate to each other even when they are within the same
subnet, making it a good solution for hotspot security.
Port Security
Locks MAC addresses to ports, and limits the number of learned MAC address
IP Source Guard
Prevents illegal IP address from accessing to specific port in the switch
RADIUS/ TACACS+
Supports RADIUS and TACACS+ authentication (switch as a client).
Storm Control
Prevents traffic on a LAN from being disrupted by a broadcast, multicast, or unicast
storm on a port
DHCP Snooping
A feature acts as a firewall between untrusted hosts and trusted DHCP servers
DHCP per Port
The switch’s DHCP server assigns IP addresses. Clients get IP addresses in sequence
and the switch assigns IP addresses on a per-port basis from the configured IP range.
ACLs
L2/L3/L4. IPv6 support. Up to 512 entries. Drop or rate limitation based on:
⚫ Source and destination MAC, VLAN ID or IP address, protocol, port,
⚫ Differentiated services code point (DSCP) / IP precedence
⚫ TCP/ UDP source and destination ports
⚫ 802.1p priority
⚫ Ethernet type
⚫ Internet Control Message Protocol (ICMP) packets
⚫ TCP flag
Quality of Service (QoS)
Hardware Queue
Supports 8 hardware queues
Scheduling
⚫ Strict priority and weighted round-robin (WRR)
⚫ Queue assignment based on DSCP and class of service
Classification
⚫ Port based
⚫ 802.1p VLAN priority based
⚫ IPv4/IPv6 precedence / DSCP based
⚫ Differentiated Services (DiffServ)
⚫ Classification and re-marking ACLs
Rate Limiting
⚫ Ingress policer

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⚫ Egress shaping and rate control
⚫ Per port
Management
DHCP Server
Support DHCP server to assign IP to DHCP clients
Zero Touch Upgrade
Upgrade single switch automatically when you get notification
Remote Monitoring
(RMON)
Embedded RMON agent supports RMON groups 1,2,3,9 (history, statistics, alarms,
and events) for enhanced traffic management, monitoring and analysis
Port Mirroring
Traffic on a port can be mirrored to another port for analysis with a network analyzer
or RMON probe. Up to N-1 (N is Switch’s Ports) ports can be mirrored to single
destination port. A single session is supported.
UPnP
UPnP was promoted by the UPnP Forum to enable simple robust connectivity to
stand-alone devices and PCs from over 800 vendors of consumer electronics, network
computing, etc. UPnP has been managed by the Open Connectivity Foundation (OCF)
since 2016.
s-Flow
The industry standard for monitoring high speed switched networks. It gives complete
visibility into the use of networks enabling performance optimization,
accounting/billing for usage, and defense against security threats
IEEE 802.1ab (LLDP)
⚫ Used by network devices for advertising their identities, capabilities, and
neighbors on an IEEE 802ab local area network
⚫ Supports LLDP-MED extensions (IEEE 802.1AB)
Web GUI Interface
Built-in switch configuration utility for browser-based device configuration
CLI
Lets you configure/manage switches in Command Line Interface modes
Dual Image
Independent primary and secondary images for backup while upgrading
SNMP
SNMP version1, 2c and 3 with support for traps, and SNMP version 3 user-based
security model (USM)
Firmware Upgrade
⚫ Web browser upgrade (HTTP/ HTTPs) and TFTP
⚫ Upgrade through console port
NTP
Network Time Protocol (NTP) is a networking protocol for clock synchronization
between computer systems over packet-switched
Other Management
⚫ HTTP/HTTPs; SSH
⚫ DHCP Client/ DHCPv6 Client
⚫ Cable Diagnostics
⚫ Ping
⚫ Syslog
⚫ Telnet Client
⚫ IPv6 Management
Switching Bandwidth
68 Gbps
MAC Addresses Table
32756 MAC Addresses

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Event/Error Log
Syslog, SMTP (RFC821)
Management Access
Filtering
SNMP, Web, Telnet, SSH
CDP Aware
Yes (Cisco Discovery Protocol)
Edge Port BPDU
Filtering
Control whether a port explicitly configured as Edge will transmit and receive
BPDUs.
Edge Port BPDU Guard
Control whether a port explicitly configured as Edge will disable itself upon
reception of a BPDU. The port will enter the error-disabled state and will be
removed from the active topology.
Switch Architecture
The switch incorporates a wire-speed, non-blocking switching fabric. This allows wire-speed transport of multiple
packets at low latency on all ports simultaneously. The switch also features full-duplex capability on all ports,
which effectively doubles the bandwidth of each connection. This switch uses store-and-forward technology to
ensure maximum data integrity. With this technology, the entire packet must be received into a buffer and
checked for validity before being forwarded. This prevents errors from being propagated throughout the
network.
Network Management Options
The switch can also be managed over the network with a web browser or Telnet application. 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. See the Web User Guide for a detailed description of the management features.
About This Manual
This manual describes how to install, configure, and troubleshoot the SM12DP2XA switch, including how to:
• Install the switch.
• Check switch status by reading the LEDs.
• Reset the switch or restore the switch to factory defaults.
• Troubleshoot switch installation.
This manual 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).

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These conventions are used throughout this guide to show information:
Note: Emphasizes important information or calls your attention to related features or instructions.
Warning: Alerts you to a potential hazard that could cause personal injury.
Caution: Alerts you to a potential hazard that could cause loss of data or damage to the system or
equipment.
Related Manuals
SM12DP2XA Quick Start Guide, 33750
SM12DP2XA Install Guide, 33751 (this manual)
SM12DP2XA Web User Guide, 33752
SM12DP2XA CLI Reference, 33753
Release Notes (version specific)
For More Information
A printed Quick Start Guide is shipped with each unit.
For Transition Networks Drivers, Firmware, etc. go to the Product Support webpage (logon required).
For Transition Networks Manuals, Brochures, Data Sheets, etc. go to the Support Library (no logon required).
For SFP information see Transition Networks SFP webpage.
For SFP+ information see Transition Networks SFP+ webpage.
Note: Information in this document is subject to change without notice. Note that this manual provides links to
third party web sites for which Transition Networks is not responsible.

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Front Panel
The switch front panel contains the power inputs, ports, LEDs and RESET button as shown and described below.
1000BASE-T Ports
The switch contains 10/100/1000BASE-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.
SFP and SFP+ Transceiver Slots
The switch supports Small Form Factor Pluggable (SFP) transceiver slots port 1 to port 12, and port 15 to port 16
are 10G SFP+. In the default configuration, if an SFP transceiver (purchased separately) is installed in a slot and
has a valid link on the port, the associated RJ-45 port is disabled.
CONSOLE Port
The switch has one RJ-45 CONSOLE port for CLI access via the provided RS232 DB9 to RJ45 Cable.
Note that Cross-over cabling to the CONSOLE port is not supported.

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Front Panel LEDs
The switch includes a LED panel for system and port indications that simplify installation and network
troubleshooting. The LEDs are located on left side of the front panel for easy viewing. The LEDs are shown and
described in the tables below.
Port Status LEDs
LED (Color)
View
Status
P1-P12 SFP
Link/Act/Speed
(Green/ Amber)
Lights when Fiber connection with remote device is good.
Blinks when any traffic is present.
The LED is green when linking up 1Gbps.
The LED is Amber when linking up 100Mbps.
P13-P14 TP
Link/Act/Speed
(Green/ Amber)
Blinks when any traffic is present.
The LED is green when linking up 1Gbps.
The LED is Amber when linking up 10/100Mbps.
P15-P16 1G SFP
10G SFP+
Link/Act/Speed
Blinks when any traffic is present.
The green 10G LED is lit when linked at 10Gbps.
The green 1G LED is lit when linked at 1Gbps.
System Status LEDs
LED (Color)
View
Status
AC PWR
(Green)
Lights when AC power is on.
DC PWR
(Green)
Lights when DC power is on.
SYS System
(Green)
Blinks when system is booting;
Lit when system is coming up.
ALM Alarm
(Red)
Usually off; lights when a system error condition exists.

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RST (Reset) Button
The front panel RST (Reset) button is recessed for access using a paper clip or something similar.
Press and hold the RST (Reset) button for 2-7 seconds to reset or 7-12 seconds to restore to
factory defaults; the LEDs blink and the fan speeds up momentarily.
Press the Reset button momentarily to perform these tasks:
• Reset the Switch: to reboot and get the switch back to the previous configuration settings saved.
• Restore the Switch to Factory Defaults: to restore the original factory default settings back to the
switch.
Note: Based on the table below, you can tell which task is being performed by reading the LED behaviors while
pressing the RST (Reset) button. Once the LED behaviors are correctly displayed, just release the button.
Task
Press RST button for
SYS LED Behavior
Port Status LED Behavior
Reset the Switch
2 ~ 7 seconds
Blinking Green
All LEDs OFF
Restore to Defaults
8 ~ 12 seconds
Blinking Green
All LEDs Stay ON
Power Supply Inputs
The SM12DP2XA front panel has two front panel power inputs for power redundancy; the switch has a 100~240
VAC power socket for AC power Input and a 24/48VDC power input via the terminal block. Connecting to both AC
and DC power provides redundancy (AC with priority).
For DC Power Supply info see https://www.transition.com/products/accessory/25130a/.
An AC Power Cord is included. To order the corresponding country-specific power cord, add the extension from
to the end of the SKU. For example, SM24TBT2DPA-NA = North America, -LA = Latin America, -EU = Europe, -UK =
United Kingdom, -SA = South Africa, -JP = Japan, -OZ = Australia, -BR = Brazil.
See Connecting to Power on page 24.

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Installation
Site Selection
The Switch can be mounted in a standard 19-inch equipment rack (Via Rack mount Kit). Be sure to follow the
guidelines below when choosing a location. The site should:
• Be at the center of all the devices you want to link and near a power outlet.
• Be able to maintain its temperature within -20 to +60°C and its humidity within 5% to 95%,
non-condensing.
• Be accessible for installing, cabling and maintaining the devices.
• Allow the status LEDs to be clearly visible.
Make sure the twisted-pair Ethernet cable is always routed away from power lines, radios, transmitters or any
other electrical interference.
Make sure that the Switch is connected to a separate grounded power outlet.
Unpacking
1. Carefully unpack all SM12DP2XA contents.
2. Verify receipt of all SM12DP2XA components. Contact your sales representative if any items are missing.
3. Place the SM12DP2XA and related materials near the install location.
4. Save the SM12DP2XA shipping carton and packing materials for possible future use.
Unpacking

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Package Contents
After unpacking the switch, please check the contents to be sure you have received all the components.
Before beginning the installation, be sure you have all other necessary installation equipment.
• One SM12DP2XA GbE Fiber Managed Switch
• Four adhesive rubber feet
• Mounting Accessory (for 19” Rack Shelf)
• One printed Quick Start Guide
• One AC Power Cord
• One RS232 DB9 to RJ45 Cable
Notify your sales representative immediately if any of the above items is missing or damaged.
Mounting
The switch can be mounted in a standard 19-inch equipment rack or on a desktop or shelf as follows.
Rack Mounting
Before rack mounting the switch, verify these factors:
• Temperature: Since the temperature within a rack assembly may be higher than the ambient room
temperature, check that the rack-environment temperature is within the specified operating
temperature range (-20° to +60°C).
• Mechanical Loading: Do not place any equipment on top of a rack-mounted unit.
• Circuit Overloading: Be sure that the supply circuit to the rack assembly is not overloaded.
• Grounding: Rack-mounted equipment should be properly grounded.
To Rack-mount Devices: (Optional)
1. Attach the brackets to the device using the screws provided in the Mounting Accessory.
2. Mount the device in the rack (via Rack-Mount kit), using four rack-mounting screws (not provided). Be sure to
secure the lower rack-mounting screws first to prevent the brackets being bent by the weight of the switch.
3. If installing a single switch only, turn to “Connection to a Power Source” at the end of this chapter.
4. If installing multiple switches, mount them in the rack, one below the other, in any order.

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Desktop or Shelf Mounting
1. Attach the four adhesive rubber feet to the bottom of the first switch.
2. Set the device on a flat surface near an AC power source, making sure there are at least two inches of space
on all sides for proper air flow.
3. If installing a single switch only, go to “Connecting to a Power Source” at the end of this Chapter.
4. If installing multiple switches, attach four adhesive feet to each one. Place each device squarely on top of the
one below, in any order.

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Ethernet Cabling
To ensure proper operation when installing the switch into a network, make sure that the current cables are
suitable for your operating environment. Check the following criteria against the current installation of your
network:
• Protection from radio frequency interference emissions.
• Electrical surge suppression.
• Separation of electrical wires and data based network wiring.
• Safe connections with no damaged cables, connectors or shields.
WARNING: The mini-GBICs are Class 1 laser devices. Avoid direct eye exposure to the beam coming from
the transmit port.
RJ-45 Connections SFP Transceiver
For fiber optic connections, you may use 50/125 or 62.5/125 micron multimode fiber or 9/125 micron
single-mode fiber.
For copper connections, you may use unshielded twisted-pair (UTP) for RJ-45 connections. For 1G bps
connections use Category 5, 5e, 6, or 6A. For 10G bps connections see the table below.
The IEEE 802.3an-2006, Table 55-12, Cabling Types and Distances provides distance descriptions as follows:
Cabling Category
Max Link Segment Distance
Cabling reference(s)
Class E / Category 6
55 m to 100 m*
ISO/IEC TR-24750 / TIA/EIA TSB-155
Class E / Category 6: unscreened
55 m
ISO/IEC TR-24750 / TIA/EIA TSB-155
Class E / Category 6: screened
100 m
ISO/IEC TR-24750 / TIA/EIA TSB-155
Class F / (Category 7)
100 m
ISO/IEC TR-24750
Class EA / Category 6A
100 m
ISO/IEC 11801 Ed 2.1 / TIA/EIA-568-B.2-10
For more information see https://www.bicsi.org/double.aspx?l=3382.