KTI Networks KF-16M Manuale utente

Installation Guide

16-port Dual-speed

Ethernet / Fast Ethernet Hub

KF-16M, KF-16MS

P/N:750-0105-001

DOC.980301-KF16M/16MS-K

mentation may be reproduced in any form or by any means or used to

make any directive work (such as translation or transformation) without

permission from KTI Networks Inc.

KTI Networks Inc. reserves the right to revise this documentation and to

make changes in content from time to time without obligation on the

part of KTI Networks Inc. to provide notification of such revision or

change.

For more information, contact:

United States KTI Networks Inc.

P.O. BOX 631008

Houston, Texas 77263-1008

Phone: 713-2663891

Fax: 713-2663893

BBS: 713-2663015

E-mail: [email protected]

WWW: http://www.ktinet.com/

International Fax: 886-2-26983873

BBS: 886-2-26983913

E-mail: [email protected]

WWW: http://www.ktinet.com/

16-port Dual-speed

Ethernet / Fast Ethernet Hub

Installation Guide

DOC.980302-KF16M/16MS-NK

P/N: 750-0105-002

The information contained in this document is subject to change without prior notice.

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 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 equip-

ment generates, uses, and can radiate radio frequency energy and if not installed and used in accor-

dance with the instruction manual may cause harmful interference in which case the user will be re-

quired 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 users 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 fol-

lowing 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 inter-

ference in which case the user may be required to take adequate measures.

CE NOTICE

Marking by the symbol CE 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.

Table of Contents

1. Introduction ............................................................................... 1

1.1 Features ..................................................................................................................2

1.2 Dual-speed Hub Technology .................................................................................3

1.3 Specifications .........................................................................................................5

2. Installing the Dual-speed Hub .................................................. 6

2.1 Packing List............................................................................................................6

2.2 Mounting the Hub ..................................................................................................6

2.3 Front Panel and Rear Panel....................................................................................8

2.4 Cascading Multiple Hubs ....................................................................................10

3. Making Network Connections ................................................ 12

3.1 Dual-speed Twisted-pair Ports.............................................................................12

3.2 Hub Stack Connection .........................................................................................16

4. LED Indicators ........................................................................ 17

4.1 LED Panel ............................................................................................................17

4.2 Interpretation ........................................................................................................17

Figures

1-1 Dual-speed Ethernet / Fast Ethernet Hub Unit ......................................................1

1-2 Dual-speed Hub Design .........................................................................................3

1-3 Dual-speed Hub with Built-in 10/100 Switch .......................................................4

2-1 Desktop Mounting .................................................................................................6

2-2 Install Rack Mount Brackets ................................................................................. 7

2-3 Install the Hub into a 19-inch Rack ....................................................................... 7

2-4 Components on the Front and Rear Panel .............................................................8

2-5 Cascading Two Hubs ...........................................................................................10

2-6 Cascading Four Hubs in One Stack .....................................................................11

2-7 A Hub Stack Containing one KF-16MS..............................................................11

3-1 Dual-speed TP Ports.............................................................................................12

3-2 Straight-through UTP and Crossover UTP..........................................................13

3-3 Connecting to Computers ....................................................................................14

3-4 Connecting to 10BASE-T Hubs ..........................................................................14

3-5 Connecting to a 100BASE-TX Class II Hub.......................................................15

3-6 Connecting Two Hub Stacks ...............................................................................16

3-14 Connecting Two Hub Stacks ...............................................................................16

4-1 LED Indicators .....................................................................................................17

1. Introduction

This guide covers the product information and installation information

for two dual speed Fast Ethernet hubs. One is KF-16M which provides

16 dual-speed twisted-pair (TP) ports. The other is KF-16MS which

provides 16 dual-speed TP ports and one internal 10M-to-100M switch

for bridging the 10Mbps network and 100M network in the hub.

Figure 1-1 Dual-Speed Ethernet / Fast Ethernet Hub Units

Both hubs comply with IEEE 802.3 and IEEE 802.3u repeater specifi-

cations. Both support 10Mbps and 100Mbps connectivity over UTP

cabling in the same hub. All of the TP ports support auto-sensing func-

tion that allows the hub to detect the connection speed automatically.

This features can protect your existing Ethernet investment without any

rewiring and also provides a migration path for upgrading from 10Mbps

to 100Mbps. Through the built-in 10M-to-100M switch, KF-16MS can

bridge the Ethernet network and Fast Ethernet network together.

Both hubs also feature cascade connectors (two for KF-16M, one for

KF-16MS) on the rear for cascading one hub to another in a hub stack.

Up to four hubs can be cascaded in one stack. A hub stack can be treated

as a single hub which gives a total of 64 dual-speed TP ports with only

one hop count.

1.1 Features

The hub provides the following features:

• Complies with IEEE 802.3 and IEEE 802.3u standard for Class II

Fast Ethernet repeater

• Provides 16 fixed dual-speed TP ports. Each port can support

either the 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 reconnect-

ing function to protect the network from failure caused by con-

secutive collisions from a specific port.

• The jabber function is implemented to prevent reception of

illegally long packet, which would degrade network performance.

• The internal 10M-to-100M switch in KF-16MS provides address

learning, filtering, and packet forwarding functions to bridge the

traffic between the Ethernet segment and the Fast Ethernet

segment. Only one KF-16MS is needed in a hub stack.

• Each hub provides daisy-chain connection for cascading up to 4 hubs per

stack with total of 64 TP ports. A hub stack may be composed of four

KF-16M units or three KF-16M with one KF-16MS unit.

• Two hub stacks can be connected through a UTP cable as an

expansion (up to 126 ports) is needed.

• The hub provides comprehensive LED indicators to indicate the

hub status and port status.

• Desktop and 19-inch rack mountable

1.2 Dual-speed Hub Technology

Dual-speed 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 Eth-

ernet technologies. It also allows a smooth migration from an Ethernet

network to a Fast Ethernet network.

A dual-speed 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 automati-

cally. The internal design of a dual-speed hub, KF-16M, is illustrated as

follows:

Figure 1-2 Dual-speed Hub Design

KF-16MS is equipped with an internal 10M-to-100M switch function to

bridge the traffics between 10Mbps segment and 100Mbps segment as

follows:

Figure 1-3 Dual-speed Hub with Built-in 10/100 Switch

The 10M-to-100M switch can perform packet forwarding from one seg-

ment to another at wire speed. It also performs the address filtering that

only forwards those packets which need to cross 10M and 100M seg-

ments.

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