KTI Networks Switch KF 16M User Manual

Installation Guide  
16-port Dual-speed  
Ethernet / Fast Ethernet Hub  
KF-16M, KF-16MS  
P/N:750-0105-001  
DOC.980301-KF16M/16MS-K  
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16-port Dual-speed  
Ethernet / Fast Ethernet Hub  
Installation Guide  
DOC.980302-KF16M/16MS-NK  
P/N: 750-0105-002  
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The information contained in this document is subject to change without prior notice.  
Copyright Ó KTI. 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 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.  
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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  
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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  
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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.  
1
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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  
2
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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  
3
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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.  
4
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1.3 Specifications  
Standard  
IEEE 802.3  
IEEE 802.3u Class II Repeater  
Network ports  
Port connectors  
16 dual-speed TP ports  
with auto-sensing function  
16 MDI-X RJ-45 shielded jacks  
1 MDI-I RJ-45 shielded jack  
Cascade connectors 2 DB25 connectors (KF-16M)  
1 DB25 connector (KF-16MS)  
LED indicators  
Power  
10M Link status per port  
100M Link status per port  
Partition status per port  
10M activity, 10M collision  
100M activity, 100M collision  
Environment  
Dimension  
Power  
Temperature  
Relative humidity 15% to 95% non-condensing  
5oC to 40oC  
440mm x 150mm x 44.4mm  
(17.3 x 5.9 x 1.75 inch)  
Internal universal power supply  
100-240 VAC, 50/60Hz, 35W  
5
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2. Installing the Dual-speed Hub  
The hub is designed to operate in workgroup environments without a  
complicated configuration procedure. It also features an auto-select 100-  
240V, 50/60Hz power supply unit, which works in most countries around  
the world.  
Before connecting the supplied power cord into the hub, check to see  
that the cord voltage and current rating conform to the standards of the  
country of operation.  
2.1 Packing List  
The hub has the following components shipped with it:  
One hub unit  
One AC power cord  
One cascade cable  
19-inch rack mount kit  
Installation guide  
2.2 Mounting the Hub  
Desktop Mounting  
The hub can be placed on a desktop as a stand-alone unit. Allow enough  
ventilation space between the hub and the objects around it.  
Figure 2-1 Desktop Mounting  
6
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Rack Mounting  
For mounting the hub into a 19-inch rack, a pair of mounting brackets is  
included in the pack.  
Figure 2-2 Install Rack Mount Brackets  
Install the hub into a 19-inch rack as illustrated in the following figure:  
Figure 2-3 Install the Hub into a 19-inch Rack  
7
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2.3 Front Panel and Rear Panel  
Figure 2-4 Components on the Front and Rear Panel  
8
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1X - 16X RJ-45 Connectors  
MDI-X jacks for Port #1 - Port #16 respectively  
16I RJ-45 Connector  
MDI-I jack for Port #16  
Diagnostic LED indicators  
The indicators provide the operating status of the hub and the  
network ports. The status includes power, activity status for 10M  
segment, activity status for 100M segment, collision status for  
10M segment, collision status for 100M segment, 10M link status  
per port, 100M link status per port, partition status per port.  
Cascade Connectors  
The connectors are used for cascading more than one hub as a hub  
stack. The connectors are labeled IN and OUT respectively for  
KF-16M. KF-16MS provides IN cascade connector only.  
AC Power Socket  
This socket is used for plugging an AC power cord.  
AC Power Switch  
This switch is used for turning the AC power to the hub unit on or  
off.  
9
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2.4 Cascading Multiple Hubs  
More than one hub can be cascaded together to be a hub stack using the  
cascade cable supplied with the hub. Two cascade connectors are lo-  
cated on the rear of the hub and labeled IN and OUT respectively for  
KF-16M. For KF-16MS, only IN cascade connector is provided.  
Before cascading hubs, make sure the power to the hubs is turned off.  
Connect one end of the cascade cable to the IN connector of the first  
hub and connect the other end to the OUT connector of the second hub  
as shown in the following figure:  
Figure 2-5 Cascading Two Hubs  
10  
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When cascading more than two hubs, follow the IN-to-OUTdaisy-chain  
rule as above to cascade all hubs sequentially. Up to four hubs can be  
cascaded in a stack.  
Figure 2-6 Cascading Four Hubs in One Stack  
Only one KF-16MS is needed in one stack if a bridge is required to  
connect the 10M network and the 100M network in a hub stack.  
Figure 2-7 A Hub Stack Containing one KF-16MS  
NOTE:  
TO KEEP THE STACK FUNCTION WORKING, THE POWER  
OF ALL HUBS IN A STACK MUST BE ON DURING OPERA-  
TION.  
11  
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3. Making Network Connections  
3.1 Dual-speed Twisted-pair Ports  
Figure 3-1 16 Dual-speed TP Ports  
The hub provides 16 dual-speed TP ports. Each can support one con-  
nection to either a 10BASE-T Ethernet device or a 100BASE-TX Fast  
Ethernet device using 2-pair UTP cable.  
RJ-45 Connectors  
Each of Port #1 to Port #15 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 us-  
ing straight-through UTP cable. The Port #16 provides one MDI-X RJ-  
45 connector and one MDI-I RJ-45 connector. Only one connector can  
be used at the same time.  
The pin definitions for MDI-X jack and MDI-I jack are as follows:  
PIN#  
MDI-X Jack  
Rx+  
MDI-I Jack  
Tx+  
1
2
Rx-  
Tx-  
3
6
Tx+  
Tx-  
Rx+  
Rx-  
4,5,7,8  
NC  
NC  
12  
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UTP Cables  
For connecting to an 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.  
Connected Device  
10BASE-T devices  
100BASE-TX devices  
UTP Cable Used  
Category 3, 4 or 5  
Category 5 only  
With different wiring, two types of the UTP cables are defined as fol-  
lows:  
Figure 3-2 Straight-through UTP and Crossover UTP  
13  
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Connecting to a Computer  
The RJ-45 connectors labeled 1X to 16X 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 dual-speed NWay  
adapter. The following figure illustrates the cables used for connecting  
to different network adapters:  
Figure 3-3 Connecting to Computers  
Connecting to 10BASE-T Hubs  
The hub can support more than one connection to the 10BASE-T hub.  
Make sure the MDI-X to MDI-I connection rule is followed when con-  
necting to a 10BASE-T hub using a straight-through UTP cable. The  
following figure shows an example for the connections:  
Figure 3-4 Connecting to 10BASE-T Hubs  
14  
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Connecting to a 100BASE-TX Hub  
Since the KF-16M and KF-16MS hubs are designed to comply with  
IEEE 802.3u Class II repeater specifications, each hub can support one  
connection to another 100BASE-TX Class II hub only. It is recommended  
to preserve Port #16 as a uplink port for connecting to another hub (or a  
hub stack) via a UTP cable. The maximum distance is 5 meters apart.  
Note: only one Class II hub connection is allowed per hub.  
Figure 3-5 Connecting to a 100BASE-TX Class II Hub  
Connecting to a Switch  
The hub can support connections to Ethernet switches or Fast Ethernet  
switches. Make sure the MDI-X to MDI-I 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  
10BASE-T switch port  
100BASE-TX switch port  
NWay switch port  
UTP cable used  
Category 3, 4 or 5  
Category 5  
Maximum length  
100 meters  
100 meters  
100 meters  
Category 5  
15  
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3.2 Hub Stack Connection  
A hub stack composed of multiple hubs (up to four) cascaded together  
as the instruction in section 2.4 can be treated as a single dual-speed hub  
which provides up to 64 dual-speed ports.  
If interconnection of the 10M network and the 100M network is re-  
quired, one and only one KF-16MS is needed to be installed in a hub  
stack to bridge the intertraffic between the 10M network and the 100M  
network.  
A hub stack still complies with IEEE 802.3u Class II specifications.  
Only one connection to another Class II hub via UTP cable is allowed  
for a hub stack. The following figure illustrates the maximum network  
span containing two hub stacks:  
Figure 3-6 Connecting Two Hub Stacks  
Two hub stacks are interconnected using a UTP cable between two hub  
ports. Each hub stack is composed of four hubs. Two end stations are  
located 205 meters apart from each other.  
16  
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4. LED Indicators  
4.1 LED Panel  
The hub provides comprehensive LED indicators for diagnosing and  
monitoring the operation of the unit as illustrated below:  
Figure 4-1 LED Indicators  
4.2 Interpretation  
Power LED indicates the status of the power supplied to the hub.  
Activity 10: there are activities occurred on the shared 10M segment.  
Blink There are activities on the segment.  
Off  
No activity occurs on the segment.  
Activity 100: there are activities occurred on the shared 100M segment.  
Blink There are activities on the segment.  
Off  
No activity occurs on the segment.  
Collision 10: there are collisions occurred on the shared 10M segment.  
Blink There are collisions on the segment.  
Off  
No collision occurs on the segment.  
17  
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Collision 100: there are collisions occurred on the shared 10M segment.  
Blink There are collisions on the segment.  
Off  
No collision occurs on the segment.  
10M Link: The port has a good link to a 10M Ethernet device.  
On  
Off  
Good link to a 10M Ethernet device  
No active link to a 10M Ethernet device  
100M Link: The port has a good link to a 100M Fast Ethernet device.  
On  
Off  
Good link to a 100M Fast Ethernet device  
No active link to a 100M Fast Ethernet device  
Partition: The port is in partitioned state.  
On  
Off  
Port is in partitioned state.  
Port is not partitioned.  
18  
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