Transition Networks SM24TAT4XA User manual

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24-Port Gigabit PoE+ Managed Switch
SM24TAT4XA
Installation and Getting Started Guide

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ABOUT THIS GUIDE
PURPOSE This guide gives specific information on how to operate and
use the management functions of the switch.
AUDIENCE The guide is intended for use by network administrators who
are responsible for operating and maintaining network
equipment; consequently, it assumes a basic working
knowledge of general switch functions, the Internet Protocol
(IP), and Simple Network Management Protocol (SNMP).
CONVENTIONS The following conventions are used throughout this guide to
show information:
WARRANTY See the Customer Support/ Warranty booklet included with
the product.
A copy of the specific warranty terms applicable to your
Manufacture products and replacement parts can be obtained
from your Manufacture Sales and Service Office pr authorized
dealer.
NOTE:Emphasizes important information or calls your
attention to related features or instructions.
W ARNING : Alerts you to a potential hazard that could cause
personal injury.
C AUTION : Alerts you to a potential hazard that could cause loss
of data, or damage the system or equipment.

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COMPLIANCES AND
SAFETY STATEMENTS
FCC-CLASS A This equipment has been tested and found to comply with the
limits for a Class A computing device pursuant to Subpart J of
part 15 of FCC Rules, which are designed to provide reasonable
protection against such interference when operated in a
commercial environment.
This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance
with the instruction manual, may cause harmful interference to
radio communications. Operation of this equipment in a
residential area is likely to cause harmful interference in which
case the user will be required to correct the interference at his
own expense.
You are cautioned that changes or modifications not expressly
approved by the party responsible for compliance could void
your authority to operate the equipment.
You may use unshielded twisted-pair (UTP) for RJ-45
connections - Category 3 or better for 10 Mbps connections,
Category 5 or better for 100 Mbps connections, Category 5, 5e,
or 6 for 1000 Mbps connections. For fiber optic connections, you
may use 50/125 or 62.5/125 micron multimode fiber or 9/125
micron single-mode fiber.
CE MARK
DECLARATION
OF CONFORMANCE
FOR EMI AND
SAFETY (EEC)
This equipment has been tested and found to comply with the
protection requirements of European Emission Standard
EN55022/EN61000-3 and the Generic European Immunity
Standard EN55024.
EMC:
EN55022(2006)+A1:2007/CISPR Class A

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22:2006+A1:2006 4K V CD, 8KV, AD
IEC61000-4-2 (2001) 3V/m
IEC61000-4-3( 2002) 1KV – (power line), 0.5KV – (signal line)
IEC61000-4-4(2004) Line to Line: 1KV, Line to Earth: 2KV
IEC61000-4-5 (2001) 130dBuV(3V) Level 2
IEC61000-4-6 (2003) 1A/m
IEC61000-4-8 (2001) Voltage dips:
>95%, 0.5period, 30%, 25periods
IEC61000-4-11(2001) Voltage interruptions:
>95%, 250periods
RELATED
PUBLICATIONS
The following publication gives specific information on how to
operate and use the management functions of the switch:
The User’s Manual
Date Revision
5/30/2013 A1
11/19/2014 A1.1

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Contents
ABOUT THIS GUIDE........................................................................................................ii
COMPLIANCES AND SAFETY STATEMENTS......................................................iii
INTRODUCTION................................................................................................................1
OVERVIEW.................................................................................................................................... 1
DESCRIPTION OF HARDWARE.................................................................................4
NETWORK PLANNING ...................................................................................................7
INTRODUCTION TO SWITCHING..................................................................................... 7
APPLICATION EXAMPLES.................................................................................................... 7
INSTALLING THE SWITCH........................................................................................10
SELECTING A SITE................................................................................................................. 10
ETHERNET CABLING ............................................................................................................. 10
EQUIPMENT CHECKLIST......................................................................................................11
PACKAGE CONTENTS.............................................................................................................11
MOUNTING..................................................................................................................................11
CONNECTING TO A POWER SOURCE........................................................................... 14
CONNECTING TO THE CONSOLE PORT....................................................................... 14
Operation of Web-based Management.............................................................17
MAKING NETWORK CONNECTIONS....................................................................18
CONNECTING NETWORK DEVICES............................................................................... 18
TWISTED-PAIR DEVICES................................................................................................... 18
FIBER OPTIC SFP DEVICES............................................................................................... 22
CABLE LABELING AND CONNECTION RECORDS.......................................25
TROUBLESHOOTING ....................................................................................................26
Basic Troubleshooting Tips.............................................................................................. 26
POWER AND COOLING PROBLEMS......................................................................28
Installation ................................................................................................................................ 28
IN-BAND ACCESS.................................................................................................................... 28

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CABLES.................................................................................................................................29
TWISTED-PAIR CABLE AND PIN ASSIGNMENTS ................................................. 29
STRAIGHT- THROUGH WIRING...................................................................................... 30
1000BASE-T PIN ASSIGNMENTS................................................................................... 31
CABLE TESTING FOR EXISTING CATEGORY 5 CABLE........................................ 31
FIBER STANDARDS................................................................................................................ 32
SPECIFICATIONS...........................................................................................................33
PHYSICAL CHARACTERISTICS........................................................................................ 33
SWITCH FEATURES.................................................................................................................. 2
MANAGEMENT FEATURES.................................................................................................... 2
STANDARDS................................................................................................................................. 2
COMPLIANCES.......................................................................................................................... 35
COMPLIANCES.................................................................................................................36

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INTRODUCTION
OVERVIEW The SM24TAT4XA is an affordable managed switch that
provides a reliable infrastructure for your network. These
switches deliver more intelligent features to improve the
availability of your critical business applications, protect your
sensitive information, and optimize your network bandwidth to
deliver information and applications more effectively. Easy to
set up and use, it provides the ideal combination of
affordability and capabilities for entry level Networking
includes Small Business or enterprise application and helps you
create a more efficient, better-connected workforce.
The SM24TAT4XA is able to provide up to 24 ports of Gigabit
Ethernet connectivity as well as 4 ports of 10G Ethernet
connectivity. It provides ideal flexibility to design suitable
network infrastructure for business requirement. The switch
supports the advanced security management capabilities and
network features to support includes data, voice, security, and
wireless technologies. Besides, these switches are easy to
deploy and configure, providing stable and quality performance
network services your business needs.

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Front of the Switch
Back of the Switches

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SWITCH
ARCHITECTURE
The switch performs 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. It
also has an RS-232 console port connector on the front panel for
out-of-band management. A PC may be connected to this port
for configuration and monitoring out-of-band via a null-modem
serial cable. (See Appendix B for wiring options.)
NOTE:For a detailed description of the management features,
refer to the User’s manual.

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DESCRIPTION OF
HARDWARE
1000BASE-T
PORTS
The switch has 24 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
TRANSCEIVER
SLOTS
SM24TAT4XA supports 1G/10G dual speed SFP+ slots on port
25 to 28.
Please visit our web page below for the detail of the available SFP+/SFP modules:
http://www.transition.com

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PORT AND
SYSTEM STATUS
LEDS
The SM24TAT4XA Series switch includes a display panel for
system and port indications that simplify installation and
network troubleshooting. The LEDs, which are located on left
hand side of the front panel for easy viewing. Details are shown
below and described in the following tables.
Table 2: Port Status LEDs
LED Condition Status
TP (Link/ACT) Green/Blink Lit Green when TP link good
Blinks when any traffic is present
TP SPEED Green/Yellow Lit Green when TP link on 1000Mbps
Yellow when TP link on 10/100Mbps
SFP (Link/ACT) Green/Blink Lit Green when SFP link good
Blinks when any traffic is present
SFP SPEED Blue/Green Lit Blue when SFP link on 10Gbps.
Green when SFP link on 1000Mbps
Table 3: System Status LED
SYSTEM LED Condition Status
System Green
OFF Lit when power on and switch is ready
POWER SUPPLY
SOCKET
There are a power sockets on the rear panel of the switch. For
normal power supply, the SM24TAT4XA-Port Switch has
standard power socket for AC power cord.
Figure 3: Power Supply Socket
AC Power socket
MODE STATUS
LEDS
The SM24TAT4XA Series switch provides a mode switch
function. There are two mode for all LED of each port, which
can switch between Link/ACT mode and SPEED mode by

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pressing MODE button. When the switch is on Link/ACT mode,
the LED of each port indicates the link or act status. The LED of
each port shows the link speed status of the port using
different colors when the switch is on SPEED mode.
Table 4: Mode Status LED
LED Condition Status
Link/ACT Green
OFF
Lit Green indicates all LED of each port are in
Link/ACT mode.
Off means Link/Act Mode disabled.
SPEED Green
OFF
Lit Green indicates all LED of each port are in
SPEED mode.
Off means Link/Act Mode disabled.

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NETWORK PLANNING
INTRODUCTION
TO SWITCHING A network switch allows simultaneous transmission of multiple
packets, and it can partition a network more efficiently than
bridges or routers. Therefore the switch has been recognized as
one of the most important devices for today’s networking
technology.
When performance bottlenecks are caused by congestion at the
network access point such as file server, the device can be
connected directly to a switched port. And, by using full-duplex
mode, the bandwidth of the dedicated segment can be doubled
to maximize throughput.
When networks are based on repeater (hub) technology, the
distance between end stations is limited by a maximum hop
count. However, a switch can subdividing the network into
smaller and more manageable segments, and linking them to
the larger network than it turns the hop count back to zero and
removes the limitation.
A switch can be easily configured in any Ethernet, Fast Ethernet,
or Gigabit Ethernet network to significantly increase bandwidth
while using conventional cabling and network cards.
APPLICATION
EXAMPLES The switch is suitable for the following applications.
 Remote site application is used in Enterprise or SMB
 Peer-to-peer application is used in two remote offices
 Office network
 High Performance Requirement environment
 Advance Security for network safety application
 Suitable for data/ voice and video conference application

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Figure 4: Network Connection between Remote Site and Central Site
Figure 5: Peer-to-peer Network Connection
SM10T2DPA
SM10T2DPA
SM8T2DPA SM24TAT4XA

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Figure 6: Office Network Connection
SM8T2DPA
SM10T2DPA
SM24TAT4XA

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INSTALLING THE
SWITCH
SELECTING A
SITE The Switch can be mounted in a standard 19-inch rack (With
Rack mount Kit) or on a flat surface. 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 0 to 40°C
(32 to 104 °F) and its humidity within 10% to 90%,
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 SM24TAT4XA Switch is connected to a
separate grounded power outlet that provides 100 to 240
VAC, 50 to 60 Hz.
ETHERNET
CABLING To ensure proper operation when installing the switch into a
network, make sure that the current cables are suitable for
100BASE-TX or 1000BASE-T operation. Check the following
criteria against the current installation of your network:
◆ Cable type: Unshielded twisted pair (UTP) or shielded
twisted pair (STP) cable with RJ-45 connectors; Category 5
or Category 5e with maximum length of 100 meters is
recommend 100BASE-TX, and Category 5e or 6 with
maximum length of 100 meters is recommend for
1000BASE-T.
◆ 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.

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Figure 7: RJ-45 Connections Figure 8: SFP Transceiver
EQUIPMENT
CHECKLIST After unpacking this switch, please check the contents to be sure
you have received all the components. Then, before beginning
the installation, be sure you have all other necessary installation
equipment.
PACKAGE
CONTENTS
SM24TAT4XA Port GbE Management Switch
Four adhesive rubber feet
Mounting Accessory (for 19” Rack Shelf, Optional)
This Installation Guide
User’s Manual CD
AC Power Cord
RS-232 to RJ-45 Console Cable
NOTE:Please notify your sales representative immediately if
any of the aforementioned items is missing or damaged.
W ARNING : The mini-GBICs are Class 1 laser devices. Avoid direct
eye exposure to the beam coming from the transmit port.
MOUNTING The switch can be mounted in a standard 19-inch equipment
rack or on a desktop or shelf. Mounting instructions for each
type of site as follow.
RACK MOUNTING Before rack mounting the switch, please pay attention to the
following 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 (0 to 40 °C).
Mechanical Loading: Do not place any equipment on top of a
rack-mounted unit.

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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:
Step1. Attach the brackets to the device using the screws provided in the Mounting
Accessory.
Figure 9: Attaching the Brackets
Step2. Mount the device in the rack (Via Optional 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.
Figure 10: Installing the switch in a Rack
Step3. If installing a single switch only, turn to “Connection to a Power Source” at the
end of this chapter.
Step4. If installing multiple switches, mount them in the rack, one below the other, in
any order.

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DESKTOP OR SHELF MOUNTING:
Step1. Attach the four adhesive rubber feet to the bottom of the first switch.
Figure 11: Attaching the Adhesive Rubber Feet
Step2. 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.
Step3. If installing a single switch only, go to “Connecting to a Power Source” at the end
of this Chapter.
Step4. 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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CONNECTING
TO A POWER
SOURCE
You can plug or remove power cord from AC power socket, to
switch the power on and off.
Figure 13: Inserting the Power Cord to AC Power Socket
Step1. Insert the power cable plug directly into the AC Socket located at the back of the
switch.
Step2. Plug the other end of the cable into a grounded, 3-Pin, AC power source.
Step3. Check the front-panel LEDs as the device is powered on to be sure the POWER
LED is lit. If not, check that the power cable is correctly plugged in.
W ARNING : For International use, you may need to change the AC
line cord. You must use a line cord set that has been approved for
the socket type in your country.
CONNECTING
TO THE
CONSOLE PORT
The DB-9 serial port on the switch’s front panel is used to connect
to the switch for out-of-band console configuration. The
command-line-driven configuration program can be accessed
from a terminal or a PC running a terminal emulation program.
The pin assignments used to connect to the serial port are
provided in the following table