SignaMax 065-7940 User manual

U SER ’ S G UIDE
Signamax™Connectivity Systems
065-7940 24-Port with 2 Combo SFP Ports
Gigabit Ethernet Switch

Signamax™Connectivity Systems
065-7940 24-Port
with 2 Combo SFP Ports
Gigabit Ethernet Switch
User’s Guide

Signamax™065-7940 24-Port Gigabit Ethernet Switch
CONTENTS
PREFACE..................................................................................... V
INTENDED READERS.....................................................................V
NOTES, NOTICES, AND CAUTIONS.....................................VI
SAFETY INSTRUCTIONS......................................................VII
Safety Cautions......................................................................vii
General Precautions for Rack-Mountable Products............... x
Protecting Against Electrostatic Discharge..........................xii
INTRODUCTION.......................................................................13
ETHERNET TECHNOLOGY...........................................................13
Fast Ethernet Technology .....................................................13
Gigabit Ethernet Technology ................................................14
SWITCHING TECHNOLOGY .........................................................15
SWITCH DESCRIPTION................................................................16
Features.................................................................................16
Ports......................................................................................17
FRONT-PANEL COMPONENTS.....................................................18
LED Indicators......................................................................18
REAR PANEL DESCRIPTION ........................................................19
SIDE PANEL DESCRIPTION..........................................................20
GIGABIT COMBO PORTS.............................................................20
INSTALLATION........................................................................21
Package Contents..................................................................21
BEFORE YOU CONNECT TO THE NETWORK ................................22
INSTALLING THE SWITCH WITHOUT THE RACK..........................23
INSTALLING THE SWITCH IN A RACK.......................................... 23
POWER ON.................................................................................23
Power Failure .......................................................................23
CONNECTING THE SWITCH.................................................24
SWITCH TO END NODE...............................................................24
SWITCH TO HUB OR SWITCH ......................................................25
CONNECTING TO NETWORK BACKBONE OR SERVER .................25

Signamax™065-7940 24-Port Gigabit Ethernet Switch
TECHNICAL SPECIFICATIONS............................................27
CONTACT INFORMATION....................................................29

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Preface
The manual is divided into sections that describe the system
installation and operating instructions with examples.
Introduction - A description of the physical features of the
switch, including LED indicators, ports and panel descriptions.
Installation – A description of the physical installation of the
switch including connecting the switch to the network and
connecting stacked switch groups.
Connecting the switch – A description of how to connect
your switch to an end node, hub, switch or backbone server.
Technical Specifications - The technical specifications of the
Gigabit Ethernet Switch.
Intended Readers
The manual contains information for setup and management of the
Gigabit Ethernet switch. This guide is intended for network
managers familiar with network management concepts and
terminology.

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Notes, Notices, and Cautions
NOTE: A NOTE indicates important
information that helps you make better use of
your device.
NOTICE: A NOTICE indicates either potential
damage to hardware or loss of data and tells
you how to avoid the problem.
CAUTION: A CAUTION indicates the potential
for property damage, personal injury, or death.

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Safety Instructions
Use the following safety guidelines to ensure your own personal
safety and to help protect your system from potential damage.
Throughout this safety section, the caution icon ( ) is used to
indicate cautions and precautions that you need to review and
follow.
Safety Cautions
To reduce the risk of bodily injury, electrical shock, fire, and
damage to the equipment, observe the following precautions.
Observe and follow service markings. Do not service any product
except as explained in your system documentation. Opening or
removing covers that are marked with the triangular symbol with a
lightning bolt may expose you to an electrical shock. Only a trained
service technician should service components inside these
compartments.
If any of the following conditions occur, unplug the product from
the electrical outlet and replace the part or contact your trained
service provider:
– The power cable, extension cable, or plug is damaged.
– An object has fallen into the product.
– The product has been exposed to water.
– The product has been dropped or damaged.
– The product does not operate correctly when you follow
the operating instructions.
• Keep your system away from radiators and heat sources.
Also, do not block cooling vents.

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• Do not spill food or liquids on your system components,
and never operate the product in a wet environment. If the
system gets wet, see the appropriate section in your
troubleshooting guide or contact your trained service
provider.
• Do not push any objects into the openings of your system.
Doing so can cause a fire or an electric shock by shorting
out interior components.
• Use the product only with approved equipment.
• Allow the product to cool before removing covers or
touching internal components.
• Operate the product only from the type of external power
source indicated on the electrical ratings label. If you are
not sure of the type of power source required, consult your
service provider or local power company.
• To help avoid damaging your system, be sure the voltage
selection switch (if provided) on the power supply is set to
match the power available at your location:
– 115 volts (V)/60 hertz (Hz) in most of North and South
America and some Far Eastern countries such as South
Korea and Taiwan
– 100 V/50 Hz in eastern Japan and 100 V/60 Hz in
western Japan
– 230 V/50 Hz in most of Europe, the Middle East, and the
Far East
• Also be sure that attached devices are electrically rated to
operate with the power available in your location.
• Use only approved power cable(s). If you have not been
provided with a power cable for your system or for any
AC-powered option intended for your system, purchase a
power cable that is approved for use in your country. The
power cable must be rated for the product and for the
voltage and current marked on the product's electrical
ratings label. The voltage and current rating of the cable
should be greater than the ratings marked on the product.

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• To help prevent an electric shock, plug the system and
peripheral power cables into properly grounded electrical
outlets. These cables are equipped with three-prong plugs
to help ensure proper grounding. Do not use adapter plugs
or remove the grounding prong from a cable. If you must
use an extension cable, use a 3-wire cable with properly
grounded plugs.
• Observe extension cable and power strip ratings. Make
sure that the total ampere rating of all products plugged
into the extension cable or power strip does not exceed 80
percent of the ampere ratings limit for the extension cable
or power strip.
• To help protect your system from sudden, transient
increases and decreases in electrical power, use a surge
suppressor, line conditioner, or uninterruptible power
supply (UPS).
• Position system cables and power cables carefully; route
cables so that they cannot be stepped on or tripped over.
Be sure that nothing rests on any cables.
• Do not modify power cables or plugs. Consult a licensed
electrician or your power company for site modifications.
Always follow your local/national wiring rules.
• When connecting or disconnecting power to hot-pluggable
power supplies, if offered with your system, observe the
following guidelines:
– Install the power supply before connecting the power
cable to the power supply.
– Unplug the power cable before removing the power
supply.
– If the system has multiple sources of power, disconnect
power from the system by
unplugging all power cables from the power supplies.
• Move products with care; ensure that all casters and/or
stabilizers are firmly connected to the system. Avoid
sudden stops and uneven surfaces.

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General Precautions for Rack-
Mountable Products
Observe the following precautions for rack stability and safety.
Also refer to the rack installation documentation accompanying the
system and the rack for specific caution statements and procedures.
Systems are considered to be components in a rack. Thus,
"component" refers to any system as well as to various peripherals
or supporting hardware.
CAUTION: Installing systems in a rack without the
front and side stabilizers installed could cause the
rack to tip over, potentially resulting in bodily injury
under certain circumstances. Therefore, always
install the stabilizers before installing components in
the rack.
After installing system/components in a rack, never
pull more than one component out of the rack on its
slide assemblies at one time. The weight of more
than one extended component could cause the rack
to tip over and may result in serious injury.
• Before working on the rack, make sure that the stabilizers
are secured to the rack, extended to the floor, and that the
full weight of the rack rests on the floor. Install front and
side stabilizers on a single rack or front stabilizers for
joined multiple racks before working on the rack.
Always load the rack from the bottom up, and load the heaviest
item in the rack first.
Make sure that the rack is level and stable before extending a
component from the rack.

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Use caution when pressing the component rail release latches and
sliding a component into or out of a rack; the slide rails can pinch
your fingers.
After a component is inserted into the rack, carefully extend the rail
into a locking position, and then slide the component into the rack.
Do not overload the AC supply branch circuit that provides power
to the rack. The total rack load should not exceed 80 percent of the
branch circuit rating.
Ensure that proper airflow is provided to components in the rack.
Do not step on or stand on any component when servicing other
components in a rack.
NOTE: A qualified electrician must perform all
connections to DC power and to safety grounds. All
electrical wiring must comply with applicable local or
national codes and practices.
CAUTION: Never defeat the ground conductor or
operate the equipment in the absence of a suitably
installed ground conductor. Contact the appropriate
electrical inspection authority or an electrician if you
are uncertain that suitable grounding is available.
CAUTION: The system chassis must be positively
grounded to the rack cabinet frame. Do not attempt
to connect power to the system until grounding
cables are connected. Completed power and safety
ground wiring must be inspected by a qualified
electrical inspector. An energy hazard will exist if the
safety ground cable is omitted or disconnected.

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Protecting Against Electrostatic
Discharge
Static electricity can harm delicate components inside your system.
To prevent static damage, discharge static electricity from your
body before you touch any of the electronic components, such as
the microprocessor. You can do so by periodically touching an
unpainted metal surface on the chassis.
You can also take the following steps to prevent damage from
electrostatic discharge (ESD):
1. When unpacking a static-sensitive component from its
shipping carton, do not remove the component from the
antistatic packing material until you are ready to install the
component in your system. Just before unwrapping the
antistatic packaging, be sure to discharge static electricity
from your body.
2. When transporting a sensitive component, first place it in
an antistatic container or packaging.
3. Handle all sensitive components in a static-safe area. If
possible, use antistatic floor pads, workbench pads and an
antistatic grounding strap.

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Introduction
Ethernet Technology
Switch Description
Features
Ports
Front-Panel Components
Side Panel Description
Rear Panel Description
Gigabit Combo Ports
Ethernet Technology
Fast Ethernet Technology
The growing importance of LANs and the increasing complexity of
desktop computing applications are fueling the need for high
performance networks. A number of high-speed LAN technologies
are proposed to provide greater bandwidth and improve
client/server response times. Among them, Fast Ethernet, or
100BaseT, provides a non-disruptive, smooth evolution from
10BaseT technology.
100Mbps Fast Ethernet is a standard specified by the IEEE 802.3
LAN committee. It is an extension of the 10Mbps Ethernet standard
with the ability to transmit and receive data at 100Mbps, while
maintaining the Carrier Sense Multiple Access with Collision
Detection (CSMA/CD) Ethernet protocol.

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Gigabit Ethernet Technology
Gigabit Ethernet is an extension of IEEE 802.3 Ethernet utilizing
the same packet structure, format, and support for CSMA/CD
protocol, full duplex, flow control, and management objects, but
with a tenfold increase in theoretical throughput over 100Mbps Fast
Ethernet and a one hundred-fold increase over 10Mbps Ethernet.
Since it is compatible with all 10Mbps and 100Mbps Ethernet
environments, Gigabit Ethernet provides a straightforward upgrade
without wasting a company’s existing investment in hardware,
software, and trained personnel.
The increased speed and extra bandwidth offered by Gigabit
Ethernet are essential to coping with the network bottlenecks that
frequently develop as computers and their busses get faster and
more users use applications that generate more traffic. Upgrading
key components, such as your backbone and servers to Gigabit
Ethernet can greatly improve network response times as well as
significantly speed up the traffic between your subnetworks.
Gigabit Ethernet enables fast connections to support video
conferencing, complex imaging, and similar data-intensive
applications. Likewise, since data transfers occur 10 times faster
than Fast Ethernet, servers outfitted with Gigabit Ethernet NIC’s
are able to perform 10 times the number of operations in the same
amount of time.
In addition, the phenomenal bandwidth delivered by Gigabit
Ethernet is the most cost-effective method to take advantage of
today and tomorrow’s rapidly improving switching and routing
internetworking technologies.

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Switching Technology
Another key development pushing the limits of Ethernet
technology is in the field of switching technology. A switch bridges
Ethernet packets at the MAC address level of the Ethernet protocol
transmitting among connected Ethernet or fast Ethernet LAN
segments.
Switching is a cost-effective way of increasing the total network
capacity available to users on a local area network. A switch
increases capacity and decreases network loading by making it
possible for a local area network to be divided into different
segments that do not compete with each other for network
transmission capacity, giving a decreasing the load on each
segment.
The switch acts as a high-speed selective bridge between the
individual segments. Traffic that needs to go from one segment to
another is automatically forwarded by the switch, without
interfering with any other segments. This allows the total network
capacity to be multiplied, while still maintaining the same network
cabling and adapter cards.
For Fast Ethernet or Gigabit Ethernet networks, a switch is an
effective way of eliminating problems of chaining hubs beyond the
“two-repeater limit.” A switch can be used to split parts of the
network into different collision domains, for example, making it
possible to expand your Fast Ethernet network beyond the 205-
meter network diameter limit for 100BaseTX networks. Switches
supporting both traditional 10Mbps Ethernet and 100Mbps Fast
Ethernet are also ideal for bridging between existing 10Mbps
networks and new 100Mbps networks.
Switching LAN technology is a marked improvement over the
previous generation of network bridges, which were characterized
by higher latencies. Routers have also been used to segment local
area networks, but the cost of a router and the setup and
maintenance required make routers relatively impractical. Today’s
switches are an ideal solution to most kinds of local area network
congestion problems.

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Switch Description
The Gigabit Ethernet Switch unit is equipped with twenty-four
ports providing dedicated 10, 100 or 1000 Mbps bandwidth. These
ports can be used for connecting PCs, servers, hubs and other
Ethernet devices. The twenty-four tri-speed ports use standard
twisted pair cabling and are ideal for segmenting networks into
small, connected subnets. Each port can support up to 2000 Mbps
of throughput in full-duplex mode. This stand-alone Switch enables
the network to use some of the most demanding multimedia and
imaging applications concurrently with other user applications
without creating bottlenecks.
Features
• Twenty-four 10/100/1000BaseT Gigabit ports for
connections to server or network backbone
• IEEE 802.3 compliant
• IEEE 802.3ab compliant
• IEEE 802.3u compliant
• IEEE 802.3x flow control for full duplex mode
• Full and half-duplex for both 10Mbps and 100Mbps
connections. Full-duplex allows the switch port to
simultaneously transmit and receive data, and only works
with connections to full-duplex capable end stations and
switches. Connections to a hub must take place at half-
duplex
• Store and forward switching scheme capability to support
rate adaptation and protocol conversion
• Data forwarding rate 14,880 pps per port at 100% of wire-
speed for 10Mbps speed
• Data forwarding rate 148,810 pps per port at 100% of
wire-speed for 100Mbpsspeed
• Data forwarding rate 1,488,100 pps per port at 100% of
wire-speed for 1000Mbps speed

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• Data filtering rate eliminates all error packets, runts, etc. at
14,880 pps per port at 100% of wire-speed for 10Mbps
speed
• Data filtering rate eliminates all error packets, runts, etc. at
148,810 pps per port at 100% of wire-speed for 100Mbps
speed
• Data filtering rate eliminates all error packets, runts, etc. at
1,488,100 pps per port at 100% of wire-speed for
1000Mbps speed
• Layer 2 switching based on MAC address
• Address handling: auto-learning, auto-aging
• MAC Address table: Support addresses up to 8K
• A packet buffer size of 400 Kbytes
• Auto-negotiation (NWay) between 10/100/1000 Mbps,
half-duplex or full duplex and flow control for
10/100/1000BaseT ports.
• Gigabit ports support connection bypass mode
Ports
• Twenty-four high-performance NWay Ethernet ports, all
of which operate at 10/100/1000 Mbps for connections to
end stations, servers and hubs. All ports can auto-negotiate
between 10Mbps, 100Mbps and 1000Mbps at full or half
duplex.
• Two Gigabit Ethernet Combo ports for making
1000BaseT and Mini GBIC connections

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Front-Panel Components
The front panel of the Switch consists of LED indicators, 24
(10/100/1000 Mbps) Ethernet ports and 2 Mini GBIC Combo ports.
Front Panel View of the switch as shipped
Comprehensive LED indicators display the status of the switch and
the network.
Two Mini GBIC Combo ports for connections to server or network
backbone.
LED Indicators
The LED indicators of the Switch include Power, 1000M and
Link/Act. The following shows the LED indicators for the Switch
along with an explanation of each indicator.
LED Indicators

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Power
This indicator on the front panel should be lit
during the Power-On Self Test (POST). It will
light green approximately 2 seconds after the
switch is powered on to indicate the ready
state of the device.
1000M
This indicator on the front panel will light solid
green for a port transferring at 1000Mbps. If
this LED is dark, the port will be transferring
at 10/100Mbps
Link/Act
Each on-board Gigabit Ethernet port has a
corresponding indicator. This will light steady
green for a valid link and blink whenever there
is reception or transmission (i.e. Activity--Act)
of data occurring at a port.
Rear Panel Description
The rear panel of the switch contains an AC power connector.
Rear panel view of the Switch
The AC power connector is a standard three-pronged connector that
supports the power cord. Plug-in the female connector of the
provided power cord into this socket, and the male side of the cord
into a power outlet. The switch automatically adjusts its power
setting to any supply voltage in the range from 100 ~ 240 VAC at
50 ~ 60 Hz.

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Side Panel Description
The right-hand side panel of the Switch contains two system fans.
The left-hand side panel contains heat vents.
The system fans are used to dissipate heat. The sides of the system
also provide heat vents to serve the same purpose. Do not block
these openings, and leave at least 4 inches of space at the rear and
sides of the switch for proper ventilation. Without proper heat
dissipation and air circulation, system components might overheat,
which could lead to system failure.
Side Panels (the left-hand panel is pictured on top)
Gigabit Combo Ports
In addition to the 24 10/100/1000 Mbps ports, the Switch features
two Mini GBIC Combo ports. These two ports are
10/100/1000BaseT copper ports (built-in) and Mini GBIC ports
(optional). The two Mini GBIC port modules are plugged into the
Switch. Please note that the Mini GBIC ports are used instead of
the built-in 10/100/1000BaseT ports. The Mini GBIC ports will not
work simultaneously with its corresponding 10/100/1000BaseT
port. For example, if port 24 is used on the Mini GBIC module,
port 24 is not available for the 10/100/1000BaseT built-in port, and
vice versa.