Kingston Technology KNE24TX-RS, KNE12TX-RS, KNE8TX-RS User Manual
KINGSTON TECHNOLOGY
F
AST ETHERX STACKABLE
8-PORT, 12-PORT, & 24-PORT
100B
F
U
MODELS: KNE8TX/RS
ASE-TX 19” RACK-MOUNTABLE
AST ETHERNET HUBS
SER’S GUIDE
KNE12TX/RS
KNE24TX/RS
Kingston Technology’s
Fast EtheRx Stackable
8-Port, 12-Port, and 24-Port
100BASE-TX 19” Rack-Mountable
Fast Ethernet Hubs
User’s Guide
Part No. 4460051-001.A01
Kingston Technology Company
17600 Newhope
Fountain Valley, CA 92708
(714) 435-2600
Important Safety Instructions
KNE24TX/RS User’s Guide - Rev. A01 Kingston Technology Company
1. Read all these instructions.
2. Save these instructions for later use.
3. Follow all warnings and instructions marked on the product.
4. Do not use this product near water.
5. This product should be operated from the type of power
source indicated on the marking label. If you are not sure of
the type of power available, consult your dealer or local
power company.
6. Do not attempt to service this product yourself, as opening
or removing covers may expose you to dangerous voltage
points or other risk. Refer all servicing to service personnel.
Wichtige Sicherheitshinweise
1. Diese Hinweise sollten vollständig durchgelesen werden.
2. Diese Hinweise für einen späteren Gebrauch aufbewahren.
3. Allen auf dem Gerät angebrachten Warnungen und
Hinweisen folgen.
4. Das Gerät nicht in der Nähe von Wasser verwenden.
5. Das Gerät nur mit dem Aufkleber bezeichneten
Netzspannung betreiben. Bei Fragen über die Art der
Netzspannung sollte der Händler oder das
Energieversorgungsunternehmen zu rate gezogen werden.
6. Nicht versuchen das Produkt selbst zu reparieren. In allen
Produkten existieren gefährliche elektrische
Spannugen. Nicht das Gehäuse öffnen.
Kingston Technology Company KNE24TX/RS User’s Guide - Rev.
A01
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TABLE OF CONTENTS
Introduction............................................................................ 2
Order Information .....................................................2
Model Types ............................................................. 3
Special Features....................................................... 4
Package Contents .................................................... 4
Design Features .................................................................... 5
Repeater Functions .................................................. 5
Jabber Lock-up Protection .......................................5
Collision-Handling..................................................... 5
Error-Handling .......................................................... 5
Automatic Partitioning/Reconnection .......................6
Hardware Installation............................................................. 6
Front Panel ............................................................... 6
Power LED ..................................................6
Collision LED ............................................... 6
Fiber Module Detection LED ....................... 6
UTP Port LEDs ............................................ 7
Utilization LEDs ...........................................7
UTP and Uplink Ports.................................. 7
Using a Crossover Cable ............................8
Notes on MDI and MDI-X Ports...................8
Rear Panel................................................................ 9
KNE24TX/RS User’s Guide - Rev. A01 Kingston Technology Company
ii
Power Switch .............................................. 9
AC Power Connector .................................. 9
Fan Units..................................................... 9
100FX Fiber Module (Optional)................... 9
Stacking Fast EtheRx Hubs ...................... 10
Installing the 100FX Module (Optional) .... 11
Appendices ......................................................................... 12
Appendix A Pin Assignments.............................. 13
UTP Port Pin Assignments ....................... 13
Appendix B Cabling Guidelines .......................... 14
Cable Wiring Standards ............................ 15
UTP Cable Rating Codes.......................... 16
Appendix C Specifications .................................. 18
Appendix D Commonly Asked Questions........... 21
Appendix E Mounting Templates ........................ 23
Rubber Feet for Desktops......................... 23
Brackets for Rack Mounting...................... 23
Appendix F Product Warranties and Notices...... 24
Limited Warranty Statement ..................... 24
Duration of Warranty................................. 24
Free Technical Support............................. 25
Disclaimers................................................ 25
Certifications ............................................. 26
Introduction
Kingston Technology Company KNE24TX/RS User’s Guide - Rev. A01
2 Introduction
Intended Audience: This manual assumes that the user has a general working
knowledge of networking principles and its architecture.
Congratulations on the purchase of your Kingston Fast EtheRx Stackable
100BASE-TX 19” Rack-Mountable Fast Ethernet Hub. There are three models
available: KNE8TX/RS, KNE12TX/RS, and KNE24TX/RS, 8-Port, 12-Port,
and 24-Port Fast Ethernet hubs, respectively. The Fast EtheRx models are
100BASE-TX Class
IEEE 802.3u 100Mb/s CSMA/CD (Carrier Sense Multiple Access with
Collision Detection) networks using Category 5 Unshielded Twisted Pair
(UTP) cabling. There is also an optional 100BASE-FX plug-in module
available for either SC or ST-type connectors. The Fast EtheRx 100BASE-TX
hubs operate at 100Megabits per second (Mbp/s) out-performing standard
10BASE-T Ethernet 10Mb/s operation by up to 10 times faster.
I
and Class II compliant repeaters which conform to
The Fast EtheRx hubs offer eight (8), twelve (12), or twenty-four (24) UTP
ports for 100BASE-TX Fast Ethernet connections. The last UTP port offers
two RJ-45 connectors to support both crossover or straight-through cable wiring
for uplinking to one other 100BASE-TX Class
hubs can also be stacked (using any combination of these 3 models) up to six
hubs using the stacking cable provided. This allows a maximum of 48, 72, or
144 UTP ports (depending on the model) on a single collision domain. The
Fast EtheRx hubs can be used on desktop or 19-inch rack-mount installations
(mounting hardware included). For easy trouble-shooting, the front panel
includes a variety of diagnostic LEDs including: Power, Collision, Utilization
and UTP port LEDs which display Link, Activity and Partition/Error status.
II
repeater. The Fast EtheRx
For the remainder of this manual, the Fast EtheRx Stackable Fast Ethernet
Hubs will be referred to collectively as the Fast EtheRx Hubs. For clarity, the
three models will be differentiated as follows:
KNE8TX/RS – Fast EtheRx Stackable 8-Port Fast Ethernet hub
KNE12TX/RS – Fast EtheRx Stackable 12-Port Fast Ethernet hub
KNE24TX/RS – Fast EtheRx Stackable 24-Port Fast Ethernet hub
Order Information
Kingston Technology Company KNE24TX/RS User’s Guide - Rev. A01
Introduction 3
The Fast EtheRx hubs support optional Fiber Optic plug-in modules which can
be ordered for future upgrading by the following part numbers:
Accessories
Part No. Description
KNE100FX/RSC Optional 100BASE-FX Fiber Optic Plug-In Module
KNE100FX/RST Optional 100BASE-FX Fiber Optic Plug-In Module
with SC (Subscriber Connect) connectors
with ST (Straight Tip) connectors
Model Types
100BaseTX Class Repeater
100BaseTX Fast Ethernet Stackable Hub
100BaseTX Fast Ethernet Stackable Hub
KNE12TX/RS
KNE8TX/RS
PWR COL FX/ON
PWR COL FX/ON
Link / Act
1 2 3 4 5 6 7 8
FX
Link / Act
1 2 3 4 5 6 7 8 9 10 11 12
Error / Partition
FX
Utilization %
1 12 25 50 100
Error / Partition
Fast EtheRx KNE8TX/RS
8-Port Model
Utilization %
1 12 25 50 100
Fast EtheRx KNE12TX/RS
12-Port Model
II
7
653421
8
8 x
MDI-X MDI
100BaseTX Class Repeater
II
1211
109 11
10978653421
12 x
12 x
MDI-X MDI
Stackable 100BASE-TX
Fast Ethernet Hub
PWR
KNE24TX/RS
1234
UTIL%
502512160
Link / Act / Partition
FX
1234
5678
COLL
9101112
FX/ON
13 14 15 16
17 18 19 20
21 22 23 24
13 14 15 16 21 22 23 24
56 78 9101112
17 18 19 20
100BASE-TX
Class II Repeater
24
Fast EtheRx KNE24TX/RS
KNE24TX/RS User’s Guide - Rev. A01 Kingston Technology Company
4 Introduction
Special Features
• 100BASE-TX Class I or Class II compliant repeater
• Stack up to six Fast EtheRx hubs to create a single repeater unit
• 8, 12, or 24 UTP ports for 100BASE-TX connection
• 8, 12, or 24 Link, Activity, and Partition/Error Status LEDs for easy
troubleshooting
• Optional 100BASE-FX modules available (SC or ST connectors)
• Utilization LEDs display network traffic in five LED percentage levels
• Power LED and Collision LED for collision detection
• Automatic partition and reconnection
• Uplink Ports support both crossover and straight-through cable wiring for
cascading to another 100BASE-TX Class
• Conforms to IEEE 802.3u 100BASE-TX standard and Repeater for
100Mb/s baseband networks
• Internal auto-sensing universal power supply operating at 100-240VAC
(50/60Hz)
• 19-inch Rack Mountable with mounting kit included
II
repeater
Package Contents
Your Fast EtheRx Stackable package should contain the following items:
ο Fast EtheRx Stackable 8-, 12-, or 24-Port Fast Ethernet Hub
KNE8TX/RS or KNE12TX/RS or KNE24TX/RS
ο 50-pin shielded stacking cable
ο AC power cord
ο Mounting kit includes:
(2) Angle brackets
(8) Bracket mounting screws
(4) 10/32” Rack-Mount screws
(4) Rubber Feet
ο User's Guide
If any of the items are missing or damaged, please contact your Kingston
dealer for a replacement. Be sure the items you receive are genuine Kingston
Technology products. If
of your unit, it’s not a genuine Kingston product.
the Kingston name and logo are not on the front panel
Kingston Technology Company KNE24TX/RS User’s Guide - Rev. A01
Design Features 5
Design Features
The Fast EtheRx 100BASE-TX hubs comply with the full set of repeater
functions as defined by IEEE 802.3u, clause 27. These functions include all
Repeater Functions, Signal Regeneration, Jabber Lockup Protection, CollisionHandling, Error-Handling, and Auto Partitioning/Reconnection. These
functions are usually transparent to all network activities and are summarized
below.
Repeater Functions
If any single port senses the start of a valid packet on its receiving line, the Fast
EtheRx hub will re-transmit the received data to all other ports on the network.
The retransmission of packets complies with the IEEE 802.3u specification in
terms of preamble structure, voltage amplitude, and timing characteristics.
These timing regeneration’s prevent cumulative signal loss, jitter, and
distortion caused by the network cabling, and allow the Fast EtheRx Hubs to be
uplinked to another 100BASE-TX switching hub or cascaded to other Class
Repeater.
Jabber Lock-up Protection
The Fast EtheRx hubs implement a built-in jabber protection scheme to ensure
that the network is not disabled due to transmission of excessively long data
packets. This protection scheme will automatically interrupt the reception of
abnormally long streams of data to prevent jabber lock-up.
II
Collision-Handling
The Fast EtheRx hubs will perform collision detection and respond to collision
conditions as defined in the IEEE 802.3u specifications.
Error-Handling
With 100BASE-TX Fast Ethernet, the new error-handling feature prevents substandard links from generating streams of false carrier and interfering with
other links.
KNE24TX/RS User’s Guide - Rev. A01 Kingston Technology Company
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