TRENDnet 21000BASE-T User manual

28-Port 10/100/1000Mbps
Gigabit Ethernet
Web Smart Switch
with
2×1000BASE-T, 24×10/100BASE-TX ports
2 optional mini-GBIC ports
User’s Guide

FCC Warning
This equipment has been tested and found to comply with the
regulations for a Class A digital device, pursuant to Part 15 of the
FCC Rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a
commercial environment. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in
accordance with this user’s guide, 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 or her own expense.
CE Mark 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.
VCCI Warning
This is a product of VCCI Class A Compliance.

UL Warning
a) Elevated Operating Ambient Temperature- If installed in a closed
or multi-unit rack assembly, the operating ambient temperature of the
rack environment may be greater than room ambient. Therefore,
consideration should be given to installing the equipment in an
environment compatible with the manufacturer's maximum rated
ambient temperature (Tmra).
b) Reduced Air Flow- Installation of the equipment in a rack should
be such that the amount of air flow required for safe operation of the
equipment is not compromised.
c) Mechanical Loading- mounting of the equipment in the rack
should be such that a hazardous condition is not achieved due to
uneven mechanical loading.
d) Circuit Overloading- Consideration should be given to the
connection of the equipment to the supply circuit and the effect that
overloading of circuits might have on over current protection and
supply wiring. Appropriate consideration of equipment nameplate
ratings should be used when addressing this concern.
e) Reliable Earthing- Reliable earthing of rack-mounted equipment
should be maintained. Particular attention should be given to supply
connections other than direct connections to the branch circuit (e.g.,
use of power strips).
Ver. 1.00

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TABLE OF CONTENT
About This Guide.................................................................................1
Purpose ............................................................................................1
Terms/Usage....................................................................................1
Introduction..........................................................................................3
Gigabit Ethernet Technology...........................................................3
Fast Ethernet Technology ................................................................4
Switching Technology .....................................................................5
VLAN (Virtual Local Area Network)..............................................6
Features............................................................................................6
Unpacking and Installation ..................................................................9
Unpacking........................................................................................9
Installation .......................................................................................9
Rack Mounting ..............................................................................10
Connecting Network Cable............................................................11
AC Power.......................................................................................11
Identifying External Components......................................................13
Front Panel.....................................................................................13
Rear Panel......................................................................................14
Understanding LED Indicators ..........................................................15
Power and System LEDs ...............................................................15
Ports 1~24 10/100M Status LEDs..................................................16
Ports 25~26 Gigabit Status LEDs..................................................16
Ports 27~28 mini-GBIC Status LEDs............................................17

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Configuration.....................................................................................19
Installing the Web Management Utility.........................................19
Discovery List................................................................................20
Monitor List...................................................................................21
Device Setting................................................................................23
Toolbar...........................................................................................24
Configuring the Switch..................................................................25
Login..............................................................................................26
Setup Menu....................................................................................28
Configuring Setup Setting..............................................................28
Port Settings...............................................................................28
VLAN Settings (Virtual Local Area Network)..........................30
Trunk Setting .............................................................................31
Mirror Setting.............................................................................31
Device Status .............................................................................32
Statistic.......................................................................................32
System Setting ...........................................................................34
Trap Setting................................................................................34
Set Password..............................................................................35
Backup Setting...........................................................................36
Reset Setting ..............................................................................37
Logout............................................................................................37
Technical Specifications....................................................................39

1
ABOUT THIS GUIDE
Congratulations on your purchase of the 24+4G-Port
10/100/1000Mbps Gigabit Ethernet Web Smart Switch. This device
integrates 1000Mbps Gigabit Ethernet, 100Mbps Fast Ethernet and
10Mbps Ethernet network capabilities in a highly flexible package.
Purpose
This guide discusses how to install your 24+4G-Port
10/100/1000Mbps Gigabit Ethernet Web Smart Switch.
Terms/Usage
In this guide, the term “Switch” (first letter upper case) refers to your
24+4G-Port 10/100/1000Mbps Gigabit Ethernet Web Smart Switch,
and “switch” (first letter lower case) refers to other Ethernet switches.

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INTRODUCTION
This chapter describes the features of the 24+4G-Port
10/100/1000Mbps Gigabit Ethernet Web Smart Switch and some
background information about Ethernet/Fast Ethernet/Gigabit Ethernet
switching technology.
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 100-Mbps Fast Ethernet and a
hundredfold increase over 10-Mbps Ethernet. Since it is compatible
with all 10-Mbps and 100-Mbps 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
is 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 subnets.
Gigabit Ethernet enables fast optical fiber 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.

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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. And with expected advances in the coming years in
silicon technology and digital signal processing that will enable
Gigabit Ethernet to eventually operate over unshielded twisted-pair
(UTP) cabling, outfitting your network with a powerful 1000-Mbps-
capable backbone/server connection creates a flexible foundation for
the next generation of network technology products.
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
have been proposed to provide greater bandwidth and improve
client/server response times. Among them, 100BASE-T (Fast
Ethernet) provides a non-disruptive, smooth evolution from the
current 10BASE-T technology. The non-disruptive and smooth
evolution nature, and the dominating potential market base, virtually
guarantees cost-effective and high performance Fast Ethernet
solutions.
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 CSMA/CD Ethernet protocol. Since the 100Mbps
Fast Ethernet is compatible with all other 10Mbps Ethernet
environments, it provides a straightforward upgrade and takes
advantage of the existing investment in hardware, software, and
personnel training.

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Switching Technology
Another approach to pushing beyond the limits of Ethernet technology
is the development 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 dividing a local area
network into different segments, which don’t compete with each other
for network transmission capacity.
The switch acts as a high-speed selective bridge between the
individual segments. The switch, without interfering with any other
segments, automatically forwards traffic that needs to go from one
segment to another. By doing this the total network capacity is
multiplied, while still maintaining the same network cabling and
adapter cards.
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, the setup and maintenance required
make routers relatively impractical. Today switches are an ideal
solution to most kinds of local area network congestion problems.

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VLAN (Virtual Local Area Network)
A VLAN is a group of end-stations that are not constrained by their
physical location and can communicate as if a common broadcast
domain, a LAN. The primary utility of using VLAN is to reduce
latency and need for routers, using faster switching instead. Other
VLAN utility includes:
Security, Security is increased with the reduction of opportunity in
eavesdropping on a broadcast network because data will be switched
to only those confidential users within the VLAN.
Cost Reduction, VLANs can be used to create multiple broadcast
domains, thus eliminating the need of expensive routers.
Port-based (or port-group) VLAN is the common method of
implementing a VLAN, and is the one supplied in the Switch.
Features
 24×10/100Mbps Auto-negotiation Fast Ethernet RJ45 ports
 2×10/100/1000Mbps Auto-negotiation Gigabit RJ45 ports
 2×mini-GBIC ports
 All RJ45 ports support auto MDI/MDIX, so there is no need to
use cross-over cables or an up-link port
 Full/half duplex transfer mode for 10/100Mbps RJ45 port
 Full duplex transfer mode for Gigabit port
 Wire speed reception and transmission
 Store-and-Forward switching scheme capability to support rate
adaptation and ensure data integrity

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 Up to 4K unicast addresses entities per device, self-learning, and
table aging
 768KBytes packet buffer
 Supports IEEE 802.3x flow control for full-duplex mode ports
 Supports Back-pressure flow control for half-duplex mode ports
 Supports port-base VLAN
 Supports port-base QoS
 Supports Trunking on 1000BASE-T ports
 Supports Port-mirroring
 Supports Port-setting for Speed/Disable, Flow control
 Easy configuration via WEB Browser
 Easy setting via Web Management Utility
 Standard 19” Rack-mount size

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UNPACKING AND INSTALLATION
This chapter provides unpacking and installation information for the
Switch.
Unpacking
Open the shipping cartons of the Switch and carefully unpacks its
contents. The carton should contain the following items:
 One 24+4G-Port 10/100/1000Mbps Gigabit Ethernet Web
Smart Switch
 One AC power cord, suitable for your area’s electrical power
connections
 Four rubber feet to be used for shock cushioning
 Screws and two mounting brackets
 CD-Rom with Web Management Utility and User’s Guide
If any item is found missing or damaged, please contact your local
reseller for replacement.
Installation
The site where you install the hub stack may greatly affect its
performance. When installing, consider the following pointers:
Install the Switch in a fairly cool and dry place. See Technical
Specifications for the acceptable temperature and humidity operating
ranges.
Install the Switch in a site free from strong electromagnetic field
generators (such as motors), vibration, dust, and direct exposure to
sunlight.

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Leave at least 10cm of space at the front and rear of the hub for
ventilation.
Install the Switch on a sturdy, level surface that can support its weight,
or in an EIA standard-size equipment rack. For information on rack
installation, see the next section, Rack Mounting.
When installing the Switch on a level surface, attach the rubber feet to
the bottom of each device. The rubber feet cushion the hub and
protect the hub case from scratching.
Rack Mounting
The switch can be mounted in an EIA standard-size, 19-inch rack,
which can be placed in a wiring closet with other equipment. Attach
the mounting brackets at the switch’s front panel (one on each side),
and secure them with the provided screws.
Figure 1. Combine the Switch with the provided screws
Then, use screws provided with the equipment rack to mount each
switch in the rack.
Figure 2. Mount the Switch in the rack

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Connecting Network Cable
The Switch supports 10Mbps Ethernet or 100Mbps Fast Ethernet and
it runs both in half and full duplex mode using two pair of Category 5
cable.
The Switch also supports 2-Ports 1000Mbps Gigabit Ethernet that
runs in Auto-negotiation mode and 10Mbps Ethernet or 100Mbps Fast
Ethernet that runs both in half and full duplex mode and 1000Mbps
Gigabit Ethernet runs in full duplex mode using four pair of Category
5 Cable.
These RJ45 ports are Auto-MDI type port. The Switch can auto
transform to MDI-II or MDI-X type, so you can just make an easy
connection that without worrying if you are using a standard or
crossover RJ45 cable.
There are additional 2 ports mini-GBIC slot for optional mini-GBIC
module.
AC Power
The Switch used the AC power supply 100-240V AC, 50-60 Hz. The
power switch is located at the rear of the unit adjacent to the AC
power connector and the system fan. The switch’s power supply will
adjust to the local power source automatically and may be turned on
without having any or all LAN segment cables connected.

13
IDENTIFYING EXTERNAL COMPONENTS
This chapter describes the front panel, rear panel, and LED indicators
of the Switch.
Front Panel
The figure below shows the front panels of the Switch.
28-Port 10/100/1000Mbps Web-SMART Gigabit Ethernet Switch
2
POWER
SYSTEM 4810
12 14 16 18 20 22 24
1357 9 11 13 15 17 19 21 23 25 26 27 28 Link/ACT
1000Mbps
100Mbps
10/100M
100Mbps
Link/ACT
Gigabit
1000BASE-T
Mini GBIC
Figure 3. Front panel of 24+4G-port Gigabit Ethernet Switch
LED Indicator:
Comprehensive LED indicators display the status of the switch and
the network (see the LED Indicators chapter below).
Fast Ethernet Ports (Port 1~24):
These ports support network speeds of either 10Mbps or 100Mbps,
and can operate in half- and full- duplex transfer modes. These ports
also supports automatic MDI/MDIX crossover detection function
gives true “plug and play” capability, just need to plug-in the network
cable to the hub directly and don’t care if the end node is NIC
(Network Interface Card) or switch and hub.
Gigabit Ethernet Ports (Port 25~26):
The Switch is equipped with two Gigabit twisted pair ports, supported auto
negotiable 10/100/1000Mbps and auto MDI/MDIX crossover detection
function. These two ports can operate in half-duplex mode for 10/100Mbps
and full- duplex mode for 10/100/1000Mbps.

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mini-GBIC Ports (Port 27~28):
The Switch is equipped with two mini-GBIC ports, supported optional
1000BASE-SX/LX mini-GBIC module.
Note: When the port was set to “Forced Mode”, the Auto
MDI/MDIX will be disabled.
Rear Panel
Figure 4. Rear panel of the Switch
Power Switch:
This is a switch where you can control to enable or disable the power.
AC Power Connector:
This is a three-pronged connector that supports the power cord. Plug
in the female connector of the provided power cord into this connector,
and the male into a power outlet. Supported input voltages range from
100-240V AC at 50-60Hz.
Reset:
The Reset button is to reset all the setting back to the factory default.
Note: Be sure that you recorded the setting of your device, else all
the setting will be erased when pressing the “Reset” button.