Allied Telesyn International AT-MS203 Manuel utilisateur

AT-MS203

Fast Ethernet Micro Switch

Installation Guide

PN 613-10652-00 Rev. A



1997 Allied Telesyn International Corp.

permission from Allied Telesyn International Corp.

Allied Telesyn reserves the right to make changes in speciﬁcations and other information

contained in this document without prior written notice. The information provided herein is

subject to change without notice. In no event shall Allied Telesyn be liable for any

incidental, special, indirect, or consequential damages whatsoever, including but not limited

to lost proﬁts, arising out of or related to this manual or the information contained herein,

even if Allied Telesyn has been advised of, known, or should have known, the possibility of

such damages.

Trademarks: Ethernet is a registered trademark of Xerox Corporation. UNIX is a

registered trademark of UNIX System Laboratories. Novell and NetWare are registered

trademarks of Novell, Inc. Microsoft and MS-DOS are registered trademarks and LAN

Manager and Windows for Workgroups are trademarks of Microsoft Corporation. 3Com is a

registered trademark of 3Com. PC-NFS is a trademark of Sun Microsystems, Inc. PC/TCP

is a registered trademark of FTP Software, Inc. DECnet is a registered trademark of

Digital Equipment Corporation.

All company names, logos, and product designations that are trademarks or registered

trademarks are the property of their owners.

iii

Table of Contents

Chapter 1

Product Description

.......................................................................................1

Overview..............................................................................................................1

Features........................................................................................................2

Switch Performance.....................................................................................4

Physical Description............................................................................................4

UTP RJ45 Connectors.........................................................................................4

MDI/MDI-X Crossover Switch.....................................................................4

LEDs .............................................................................................................5

Configuration Switch...................................................................................6

Full Duplex Configuration...........................................................................6

RESET Button..............................................................................................6

AC Power Connector....................................................................................6

Functional Description........................................................................................7

Frame Processing.........................................................................................7

Address Recognition and Filtering..............................................................7

Chapter 2

Installation and Troubleshooting

...............................................................9

Verifying Package Contents................................................................................9

Ventilation....................................................................................................9

Cable Specifications and Requirements...........................................................10

Installation .................................................................................................11

Troubleshooting Techniques.............................................................................12

Connectivity Testing..................................................................................12

Is the unit receiving power?.......................................................................12

Is the LINK LED lit?..................................................................................13

Appendix A

AT-MS203 Micro Switch Specifications

...................................................15

Physical Specifications......................................................................................15

Electrical and Mechanical Specifications.........................................................15

Cabling Specifications.......................................................................................16

Product Models...........................................................................................16

Jack Connector...........................................................................................16

MDI-X and MDI Connector Pinouts..........................................................17

Appendix B

Technical Support Fax Order

................................................................... 19

Appendix C

AT-MS203 Micro Switch Installation Guide Feedback

....................... 21

Appendix D

Where To Find Us

......................................................................................... 23

Electrical Safety and Installation Requirements

................................. 25

Chapter 1

Product Description

WARNING!

Before attempting to install or conﬁgure this unit, please refer to the Electrical

Safety and Installation Requirements located in the back of this guide.

Overview

The AT-MS203 Fast Ethernet Micro Switch is a self-learning, unmanaged

dual- port 10BaseT/100Base-TX Ethernet switch which:

❑

performs data packet forwarding and filtering at full wire speed (10/

100 Mbps)

❑

can be set to half or full duplex mode

❑

is transparent to higher protocols

This micro switch is based on store and forward switching architecture,

providing error-free packet transfer. The AT-MS203 Micro Switch

complements the existing Allied Telesyn Fast Ethernet family of products and

is fully compliant with IEEE 802.3 and IEEE 802.3u standards. All of the

switch’s components are located on the front panel.

Figure 1:

AT-MS203 Micro Switch

1212

1

2

3

1

2

3

1

2

3

1

2

3

MDI MDI-X 1

2

3

1

2

3

1

2

3

1

2

3

MDI MDI-X

10Base-T/100Base-TX 10Base-T/100Base-TX

COL

LINK

100

COL

LINK

100

FORWARD

POWER

RESET

100

Half

Full

DUPLEX

MODE

SPEED

(Mbps)

PORT

PORT 1 PORT 2 CONFIGURATION

SWITCH

POWER

IEEE 802.3/802.3u

Micro Switch

Product Description

Note

For definitions of technical terms associated with Allied Telesyn’s

products, refer to the Glossary on Allied Telesyn’s website at

www.alliedtelesyn.com.

Features

AT-MS203 Micro Switch has the following major features:

❑

Two shielded RJ45 10BaseT/100Base-TX ports for Ethernet/Fast

Ethernet connectivity

❑

MDI/MDI-X crossover slide switch for each port

❑

Configuration switch for selecting operating speed (10/100 Mbps) and

duplex modes (Half/Full) for each port

❑

Port and switch status LEDs

❑

Reset button

❑

Internal AC universal power supply with detachable cord

❑

UTP cabling (Category 5; 100Mbps, Category 3-5; 10Mbps)

❑

Up to 100 meters maximum for each end station connection

❑

Full compatibility with other Allied Telesyn 10/100 Mbps products

AT-MS203 Micro Switch Installation Guide

Figure 2 shows a typical configuration using the AT-MS203 Micro Switch to

connecttwoEthernet segmentsorcollision domains.Theswitch performsbasic

packet filtering functions and only forwards appropriate packets.

Figure 2:

AT-MS203 Micro Switch Typical Configuration

Server

PORT 1 PORT 2 CONFIGURATION

SWITCH

POWER

Server

Hub Stack

10Mbps 100Mbps

AT-MS203 Micro Switch

Product Description

Switch Performance

The AT-MS203 Micro Switch performs at:

❑

148,800 pps for 100 Mbps and 14, 880 pps for 10 Mbps for full wire

speed forwarding and filtering

❑

200 Mbps maximum throughput in 100 Mbps, full duplex mode

❑

20 Mbps maximum throughput in 10Mbps, full duplex mode

❑

Up to 8,192 unicast MAC addresses and unlimited multicast/

broadcast addresses

❑

280K bytes (per port) packet buffer

Physical Description

The front panel of the AT-MS203 Micro Switch is equipped with the following

connectors, switches, and LEDs, as shown in Figure 3.

Figure 3:

AT-MS203 Micro Switch Front Panel

UTP RJ45 Connectors

There are two UTP RJ45 connectors, designated as Ports 1 and 2. Both ports

have 10BaseT/100BaseTX connectors each with an MDI/MDI-X switch and can

operate in full or half duplex mode.

MDI/MDI-X Crossover Switch

Each of the two ports has an MDI/MDI-X crossover slide switch. The MDI/MDI-

X slide switch allows you to connect to another bridge, switch or hub for

network expansion, using straight-through cable; therefore, eliminating the

need for a cross-over cable.

1212

1

2

3

1

2

3

1

2

3

1

2

3

MDI MDI-X 1

2

3

1

2

3

1

2

3

1

2

3

MDI MDI-X

10Base-T/100Base-TX 10Base-T/100Base-TX

COL

LINK

100

COL

LINK

100

FORWARD

POWER

RESET

100

Half

Full

DUPLEX

MODE

SPEED

(Mbps)

PORT

PORT 1 PORT 2 CONFIGURATION

SWITCH

POWER

IEEE 802.3/802.3u

Micro Switch

AT-MS203 Micro Switch Installation Guide

LEDs

Table 1 lists and defines the individual port and system status LEDs.

Table 1:

Port and System LEDs

LED Color Description

TX Green

indicates that the switch is transmitting signals.

RX Green

indicates that the switch is receiving signals.

COL Yellow

indicates data collisions.

LINK Green

indicates that the link connection is established.

FD Yellow

for FULL Duplex mode indicates simultaneous

(two-way), independent transmission.

OFF

for HALF Duplex mode indicates transmission in only

one direction at a time. Both devices contend for the right

to send data when active transmission is not occurring.

100 Green

indicates the operating speed is 100 Mbps

OFF

means 10 Mbps.

FORWARD

(switch) Green

indicates that the LAN switch is forwarding a packet

from one port of a switch to the other.

POWER

(switch) Green

indicates that the switch is powered on.

Product Description

Configuration Switch

The AT-MS203 Micro Switch provides an externally accessible Configuration

Switch to select operating speed (10Mbps or 100Mbps) and duplex mode (half

or full), making it suitable for switching between 10 and 10, 10 and 100, or 100

and 100 Mbps networks, as needed.

Usethe Configuration(DIP)switch tomanuallyconfigurethespeedandduplex

mode for each port. The DIP switch should be set as shown in the following:

Full Duplex Configuration

Configure only one port on the AT-MS203 to full duplex when connecting to a

single workstation or to another switch. Since AT-MS203 does not have auto-

negotiation, also make sure to configure the device at the other end to full

duplex or else you may see transmission difficulties.

Whenconnecting toa hubor repeater,you mustsettheporttohalfduplexsince

this is a shared Ethernet Carrier-Sense Multiple Access with Collision

Detection (CSMA/CD) environment because when set to full duplex, collision

detection is disabled.

RESET Button

Youmust pressthe RESETbuttonanytimeyou changethe configurationof the

switch. For example, when you change the operating speed from 10 to 100, you

must reset the switch to load the new parameters. The RESET also clears all

receive buffers, MAC address tables and restarts the self-address learning

mechanism. Powering the unit off and on is equivalent to the RESET button.

AC Power Connector

AT-MS203 Micro Switch has an internal AC universal power supply rated at

100 to 240 VAC, 50/60 Hz. Allied Telesyn provides different power cords based

on the requirements of different countries.

DUPLEX MODE SPEED (Mbps)

Up = Half Duplex Up = 10 Mbps

Down = Full Duplex Down = 100 Mbps

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