10BASE-T/100BASE-TX 8-Port Fast Ethernet Hub

10BASE-T/100BASE-TX 8-Port Fast Ethernet Hub
Installation Guide
10BASE-T/100BASE-TX
8-Port Fast Ethernet Hub
Model: KF-8DL
DOC.990106-KF8DL-K
P/N: 750-0118-001
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The information contained in this document is subject to change without prior notice.
Copyright . All Rights Reserved.
TRADEMARKS
Ethernet is a registered trademark of Xerox Corp.
WARNING:
This equipment has been tested and found to comply with the limits for a Class B
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 the instruction
manual may cause harmful interference in which case the user will be required to correct
the interference at his own expense.
NOTICE:
(1)The changes or modifications not expressively approved by the party
responsible for compliance could void the user's authority to operate the equipment.
(2)Shielded interface cables and AC power cord, if any, must be used in order to
comply with the emission limits.
CISPR A COMPLIANCE:
This device complies with EMC directive of the European Community and meets or
exceeds the following technical standard.
EN 55022 - Limits and Methods of Measurement of Radio Interference Characteristics
of Information Technology Equipment. This device complies with CISPR Class A.
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.
CE NOTICE
Marking by the symbol
indicates compliance of this equipment to the EMC
directive of the European Community. Such marking is indicative that this equipment
meets or exceeds the following technical standards:
EN 55022: Limits and Methods of Measurement of Radio Interference characteristics
of Information Technology Equipment.
EN 50082/1:Generic Immunity Standard -Part 1: Domestic Commercial and Light Industry.
EN 60555-2: Disturbances in supply systems caused by household appliances and similar
electrical equipment - Part 2: Harmonics.
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Table of Contents
Chapter 1 Introduction
Introduction ............................................................................... 1
Features ................................................................................... 2
10/100M Hub Technology ........................................................ 3
Chapter 2 Installation
Unpacking ................................................................................. 4
Checking AC Power ................................................................. 4
Installing the Hub ...................................................................... 5
Chapter 3 Making Network Connections
Network Connectors and Rear Switch ................................... 6
RJ-45 Connectors .................................................................... 7
UTP Cables ............................................................................... 7
Connecting to Computers ........................................................ 8
Connecting to Network Switch Ports ...................................... 8
Connecting to Hubs .................................................................. 9
Chapter 4 Interpreting LED Indicators
LED Interpretations ................................................................. 12
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1. Introduction
The Fast Ethernet/Ethernet hub is designed to allow easy and flexible migration from 10Mbps Ethernet to 100Mbps Fast Ethernet.
The hub complies with IEEE 802.3 and IEEE 802.3u repeater specifications and supports 10Mbps or 100Mbps connectivity over
UTP cabling in the same hub. The hub provides 8 TP ports. All of
the TP ports support auto-sensing function that allows the hub to
detect the connection speed automatically. The hub also provides
complete diagnostic LED indicators to indicate the activity status
of the hub and network ports.
The following figure illustrates the front and rear view of the hub:
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Features
• Complies with IEEE 802.3 and IEEE 802.3u standard for
Ethernet/Class II Fast Ethernet repeater
• Provides a configuration switch (10M/100M/AUTO) to set all
8 TP ports as 10BASE-T ports, 100BASE-TX ports or 10/100
auto-sensing ports.
• In AUTO mode, each TP port can support either an Ethernet
10Mbps connection or a Fast Ethernet 100Mbps connection
with auto-sensing the connection speed.
• The hub provides one uplink jack that allows easy linking of
two hubs via straight-through UTP cable.
• The TP ports are implemented with auto partition and
reconnecting function to protect the network from failure
caused by consecutive collisions from a specific port.
• The jabber function is implemented to prevent reception of
illegally long packet, which would degrade network performance.
• Compact design suitable for small workgroup
• Specifications
Power:
Dimension:
Temperature:
Humidity:
+12V 1200mA min.
203 mm x 118 mm x 38 mm (WxDxH)
o
o
0 to 40 C when operating
10% to 90% non-condensing when operating
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10/100M Hub Technology
The 10/100M hub is designed to support connections with different speeds in the same hub. It makes a network planning simpler,
especially when an environment is containing 10Mbps Ethernet
and 100Mbps Fast Ethernet technologies. It also allows a smooth
migration from an Ethernet network to a Fast Ethernet network.
A 10/100M hub is actually equipped with one 10Mbps repeater
and one 100Mbps repeater in one hub unit. Each repeater serves
one shared network segment. The repeater receives transmissions
from any of its ports and retransmits them to all its other ports. The
TP port of the hub can auto-sense the speed (10M or 100M) of its
connection and switch to either 10Mbps shared segment or 100Mbps
shared segment automatically. The internal design of a 10/100M
hub is illustrated as follows:
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2. Installation
Unpacking
Check to see that you have everything before you start the installation.
• Installation guide
• The hub unit
• One AC power adapter for the hub
Checking AC Power
Before you begin the installation, check the AC voltage of your area.
The AC power adapter which is used to supply the DC power for the
hub should have the AC voltage matching the commercial power voltage in your area. The specifications of the AC power adapter are:
• AC input power: AC power voltage of your area
• DC output power:+12 VDC 1200mA min.
• DC plug type:
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The power socket for the AC power adapter is located on the rear of
the hub as shown below:
Installing the Hub
1. Install the hub with the AC power adapter provided.
2. Connect the power adapter cable to the hub before connecting
the adapter to the AC outlet.
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3. Making Network Connections
Network Connectors and Rear Switch
The hub provides 8 Twisted-Pair ports. Each can support one connection to either a 10BASE-T Ethernet device or a 100BASE-TX Fast
Ethernet device using 2-pair UTP cable. One configuration switch is
located on the rear panel. The switch is used for setting the operation
mode for the hub. Three selections are available as follows:
AUTO mode
100M mode
10M mode
Set all TP ports to be auto-sensing ports
Set all TP ports to be 100BASE-TX ports
Set all TP ports to be 10BASE-T ports
For AUTO mode, each TP port can support either the Ethernet
10Mbps connection or a Fast Ethernet 100Mbps connection with
auto-sensing the connection speed. For 100M mode, the TP port
supports connection to a 100BASE-TX Fast Ethernet device only.
For 10M mode, the TP port supports connection to a 10BASE-T
Ethernet device only.
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RJ-45 Connectors
Each of Port #1 to Port #7 provides one RJ-45 connector, which are
implemented as MDI-X jack. An MDI-X jack is designed with
internal crossover function. The function allows a connection to a
computer using straight-through UTP cable. The Port #8 provides
one MDI-X RJ-45 connector and one MDI RJ-45 connector. Only
one connector can be used at the same time. The pin definitions for
MDI-X jack and MDI jack are as follows:
PIN#
1
2
3
6
4,5,7,8
MDI-X Jack
Rx+
RxTx+
TxNC
MDI Jack
Tx+
TxRx+
RxNC
UTP Cables
For connecting to a 10BASE-T Ethernet device, a 2-pair Category 3,
4, or 5 UTP cable can be used. For connecting to a 100BASE-TX Fast
Ethernet device, only 2-pair Category 5 UTP cable can be used. With
different wiring, two types of the UTP cables are defined as follows:
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Connecting to Computers
The RJ-45 connectors labeled 1X to 8X can be used for connecting
to the network adapter installed in a computer. The network adapter
can be a 10BASE-T adapter, a 100BASE-TX adapter, or a 10/100
dual-speed NWay adapter. The following table lists the cables used
for connecting to different network adapters:
Adapter connected
10BASE-T adapter
100BASE-TX adapter
10/100 NWay adapter
UTP cable used
Category 3, 4 or 5
Category 5
Category 5
Maximum length
100 meters
100 meters
100 meters
The link from the hub to a 10/100 NWay adapter card is established
as a 100M connection.
Connecting to Network Switch Ports
The hub can support connections to Ethernet switches or Fast
Ethernet switches. Make sure the MDI-X to MDI connection rule
is followed when using straight-through UTP cable. The following
table lists the cable and the cable length allowed for the connections
to different switch devices:
Switch connected
UTP cable used
10BASE-T switch port
Category 3, 4 or 5
100BASE-TX switch port
Category 5
10/100 NWay switch port
Category 5
Maximum length
100 meters
100 meters
100 meters
The link between the hub and a 10/100 NWay switch port is established as a 100M connection.
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Connecting to Hubs
The following table lists the types and the maximum number of hub
connections depending on the configuration switch setting:
Configuration
10M mode
100M mode
100M mode
AUTO mode
AUTO mode
AUTO mode
Types of hubs
Connections
10BASE-T hubs
up to 8
100BASE-TX Class II hub one
Dual-speed Class II hub
one
10BASE-T hubs
up to 8
100BASE-TX Class II hub one
Dual-speed Class II hub
one
The cables used and maximum distance allowed for a hub connection are:
Hub Port connected
10BASE-T hub port
100BASE-TX hub port
Auto-sensing hub port
Cable used
Cat. 3,4,5
Cat. 5
Cat. 5
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Distance
100 meters
5 meters
5 meters
Connecting to 10M Ethernet Hubs
The hub can support up to eight 10M Ethernet hub connections.
The Ethernet connection rules should be followed as follows:
1. Between any two end-nodes in a collision domain, there may be
up to five cable segments and four intermediate repeaters (hubs
or other repeaters).
2. If a path between two end-nodes contains five cable segments,
no more than three populated segment can exist in the path.
The following figure illustrates a connection example:
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Connecting to a Fast Ethernet Hub
Since the hub is designed to comply with IEEE 802.3u Class II
repeater specifications, it can support one connection to another
100BASE-TX Class II hub. The connection rules are:
1. Other 100BASE-TX hub which is connected to the 10/100M
hub must comply with IEEE 802.3u Class II repeater specifications.
2. No more than two hubs can be cascaded in the network.
The following figure illustrates the maximum Fast Ethernet network
expansion using two 10/100M hubs:
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4. Interpreting LED Indicators
The following figure shows the locations of the LED indicators:
PWR LED: indicates the status of the repeater power source.
State Indication
On
Normal
Off
Problem
Interpretation
The power of the hub is on.
No power is being supplied to the hub.
COL LED: indicates the collision detected by the hub. The LED is
normally off and it blinks when there are collisions on 10M shared
segment or 100M shared segment.
UTP Link/Rx 1-8 LED: indicates the link status and receiving
activities of port #1-#8.
State Indication
On
Normal
Blink
Normal
Off
Normal
Interpretation
Good link and no incoming packets
(Green color: 100M link, orange color: 10M link)
There are receiving activities on the port.
(Green color: 100M link, orange color: 10M link)
No active link to another device
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