D-Link Switch DES-2212 User manual

10/100Mbps

Ethernet/Fast Ethernet

Switch

Model DES-2212

User’s Guide

Rev. 02 (October, 1997)

6DES2212..02

Printed In Taiwan

RECYCLABLE

Wichtige Sicherheitshinweise

1.

Bitte lesen Sie sich diese Hinweise sorgfältig durch.

2.

Heben Sie diese Anleitung für den spätern Gebrauch auf.

3.

Vor jedem Reinigen ist das Gerät vom Stromnetz zu trennen. Vervenden Sie keine Flüssig- oder

Aerosolreiniger. Am besten dient ein angefeuchtetes Tuch zur Reinigung.

4.

Um eine Beschädigung des Gerätes zu vermeiden sollten Sie nur Zubehörteile verwenden, die vom

Hersteller zugelassen sind.

5.

Das Gerät is vor Feuchtigkeit zu schützen.

6.

Bei der Aufstellung des Gerätes ist auf sichern Stand zu achten. Ein Kippen oder Fallen könnte

Verletzungen hervorrufen. Verwenden Sie nur sichere Standorte und beachten Sie die Aufstellhinweise des

Herstellers.

7.

Die Belüftungsöffnungen dienen zur Luftzirkulation die das Gerät vor Überhitzung schützt. Sorgen Sie

dafür, daß diese Öffnungen nicht abgedeckt werden.

8.

Beachten Sie beim Anschluß an das Stromnetz die Anschlußwerte.

9.

Die Netzanschlußsteckdose muß aus Gründen der elektrischen Sicherheit einen Schutzleiterkontakt haben.

10.

Verlegen Sie die Netzanschlußleitung so, daß niemand darüber fallen kann. Es sollete auch nichts auf der

Leitung abgestellt werden.

11.

Alle Hinweise und Warnungen die sich am Geräten befinden sind zu beachten.

12.

Wird das Gerät über einen längeren Zeitraum nicht benutzt, sollten Sie es vom Stromnetz trennen. Somit

wird im Falle einer Überspannung eine Beschädigung vermieden.

13.

Durch die Lüftungsöffnungen dürfen niemals Gegenstände oder Flüssigkeiten in das Gerät gelangen. Dies

könnte einen Brand bzw. Elektrischen Schlag auslösen.

14.

Öffnen Sie niemals das Gerät. Das Gerät darf aus Gründen der elektrischen Sicherheit nur von

authorisiertem Servicepersonal geöffnet werden.

15.

Wenn folgende Situationen auftreten ist das Gerät vom Stromnetz zu trennen und von einer qualifizierten

Servicestelle zu überprüfen:

a –

Netzkabel oder Netzstecker sint beschädigt.

b –

Flüssigkeit ist in das Gerät eingedrungen.

c –

Das Gerät war Feuchtigkeit ausgesetzt.

d –

Wenn das Gerät nicht der Bedienungsanleitung ensprechend funktioniert oder Sie mit Hilfe dieser

Anleitung keine Verbesserung erzielen.

e –

Das Gerät ist gefallen und/oder das Gehäuse ist beschädigt.

f –

Wenn das Gerät deutliche Anzeichen eines Defektes aufweist.

16.

Bei Reparaturen dürfen nur Orginalersatzteile bzw. den Orginalteilen entsprechende Teile verwendet

werden. Der Einsatz von ungeeigneten Ersatzteilen kann eine weitere Beschädigung hervorrufen.

17.

Wenden Sie sich mit allen Fragen die Service und Repartur betreffen an Ihren Servicepartner. Somit

stellen Sie die Betriebssicherheit des Gerätes sicher.

WARRANTIES EXCLUSIVE

IF THE D-LINK PRODUCT DOES NOT OPERATE AS WARRANTED ABOVE, THE CUSTOMER'S

SOLE REMEDY SHALL BE, AT D-LINK'S OPTION, REPAIR OR REPLACEMENT. THE FOREGOING

WARRANTIES AND REMEDIES ARE EXCLUSIVE AND ARE IN LIEU OF ALL OTHER

WARRANTIES, EXPRESSED OR IMPLIED, EITHER IN FACT OR BY OPERATION OF LAW,

STATUTORY OR OTHERWISE, INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS

FOR A PARTICULAR PURPOSE. D-LINK NEITHER ASSUMES NOR AUTHORIZES ANY OTHER

PERSON TO ASSUME FOR IT ANY OTHER LIABILITY IN CONNECTION WITH THE SALE,

INSTALLATION MAINTENANCE OR USE OF D-LINK'S PRODUCTS

D-LINK SHALL NOT BE LIABLE UNDER THIS WARRANTY IF ITS TESTING AND EXAMINATION

DISCLOSE THAT THE ALLEGED DEFECT IN THE PRODUCT DOES NOT EXIST OR WAS CAUSED

BY THE CUSTOMER'S OR ANY THIRD PERSON'S MISUSE, NEGLECT, IMPROPER INSTALLATION

OR TESTING, UNAUTHORIZED ATTEMPTS TO REPAIR, OR ANY OTHER CAUSE BEYOND THE

RANGE OF THE INTENDED USE, OR BY ACCIDENT, FIRE, LIGHTNING OR OTHER HAZARD.

LIMITATION OF LIABILITY

IN NO EVENT WILL D-LINK BE LIABLE FOR ANY DAMAGES, INCLUDING LOSS OF DATA, LOSS

OF PROFITS, COST OF COVER OR OTHER INCIDENTAL, CONSEQUENTIAL OR INDIRECT

DAMAGES ARISING OUT THE INSTALLATION, MAINTENANCE, USE, PERFORMANCE, FAILURE

OR INTERRUPTION OF A D- LINK PRODUCT, HOWEVER CAUSED AND ON ANY THEORY OF

LIABILITY. THIS LIMITATION WILL APPLY EVEN IF D-LINK HAS BEEN ADVISED OF THE

POSSIBILITY OF SUCH DAMAGE.

IF YOU PURCHASED A D-LINK PRODUCT IN THE UNITED STATES, SOME STATES DO NOT

ALLOW THE LIMITATION OR EXCLUSION OF LIABILITY FOR INCIDENTAL OR CONSEQUENTIAL

DAMAGES, SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU.

Limited Warranty

Hardware:

D-Link warrants its hardware products to be free from defects in workmanship and materials, under normal use

and service, for the following lengths of time from the date of purchase from D-Link or its Authorized Reseller:

Product Type Warranty Period

Network adapters Lifetime

Unmanaged and managed hubs (10Mbps) Lifetime *

Unmanaged and managed hubs (100Mbps) One year

Managed Switches Three years *

Unmanaged switches Lifetime *

Repeaters, MAUs , transceivers, media converters One year

Concentrators One year

Internetworking products One year

* Power supply and fans in these devices One year

Other hardware products One year

Spare parts and spare kits 90 days

If a product does not operate as warranted during the applicable warranty period, D-Link shall, at its option and

expense, (1) repair the defective product or part, (2) deliver to Customer an equivalent product or part to replace

the defective item. All products that are replaced will become the property of D-Link. Replacement products

may be new or reconditioned. Any replaced or repaired product or part has a ninety (90) day warranty or the

remainder of the initial warranty period, whichever is longer.

D-Link shall not be responsible for any software, firmware, information, or memory data of Customer contained

in, stored on, or integrated with any products returned to D-Link pursuant to any warranty.

All products with lifetime warranty have a standard five-year warranty. To qualify for lifetime warranty, the

enclosed Product Registration Card must be completed and returned to D-Link within ninety (90) days of

purchase.

Warranty service may be obtained by contacting a D-Link office within the applicable warranty period for a

Return Material Authorization (RMA) number. If a Registration Card has not been previously sent, proof of

purchase, such as a copy of the dated purchase invoice, must be provided. Once an RMA number is issued, the

defective product must be shipped back to D-Link prepaid, insured and wrapped in the original or similar

shipping package to ensure that it will not be damaged during shipment. When returning the defective product

to D-Link for service, the RMA number must be marked on the outside of the shipping package. Any product

returned without an RMA number shall be rejected and sent back to the Customer, and D-Link reserves the right

to have Customer bear the cost of sending back such products. A service charge may or may not be levied to

Customer by D-Link. To find out if a service charge is levied or not, and the charged amount, read the RMA

that is returned to Customer, or ask the D-Link office when an RMA is requested.

Software:

D-Link warrants that the software programs licensed from it will perform in substantial conformance to the

applicable published program specifications for a period of ninety (90) days from the date of purchase from D-

Link or its Authorized Reseller. D-Link warrants the magnetic media containing software against failure during

the warranty period. No updates are provided. D-Link's sole obligation hereunder shall be to replace any

defective software products with products which substantially conform to D-Link's applicable published

specifications. Customer assumes responsibility for the selection of the appropriate applications program and

associated reference materials. D-Link makes no warranty that its software products will work in combination

with any hardware or applications software products provided by third party, that the operation of the software

products will be uninterrupted or error free, or that all defects in the software product will be corrected. For any

third party products listed in the D-Link software product documentation or specifications as being compatible,

D-Link will make reasonable efforts to provide compatibility, except where the non-compatibility is caused by

"bug" or defect in the third party's product.

Warranty service for software products may be obtained by contacting a D-Link office within the warranty

period. Where no Product Registration Card has been sent by Customer, proof of purchase, such as a copy of

the dated purchased invoice, must be provided.

D-Link Offices to Contact for Warranty Service:

To obtain an RMA number for warranty service, contact the D-Link office nearest you. A list of contact

addresses for D-Link’s international offices is found in the back of this User’s Guide. Your Warranty

Registration Card should also be sent to your regional D-Link office.

Trademarks

Copyright



1997 D-Link Corporation.

Contents subject to change without prior notice.

D-Link is a registered trademark of D-Link Corporation/D-Link Systems, Inc.

All other trademarks belong to their respective proprietors.

Copyright Statement

No part of this publication may be reproduced in any form or by any means or

used to make any derivative such as translation, transformation, or adaptation

without permission from D-Link Corporation/D-Link Systems Inc., as

stipulated by the United States Copyright Act of 1976.

FCC 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 equipment

generates, uses, and can radiate radio frequency energy and, if not installed

and used in accordance with this user’s guide, may cause harmful interference

to radio communications. Operation of this equipment in a residential area is

likely to cause harmful interference in which case the user will be required to

correct the interference at his own expense.

CE Mark 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.

About This Guide

vii

T

ABLE OF

C

ONTENTS

0

A

BOUT

T

HIS

G

UIDE

..........................................................

XI

1

I

NTRODUCTION

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

DES-2212 Ethernet/Fast Ethernet Switch .................................................1

Ports ....................................................................................................................1

Switching ............................................................................................................2

Management........................................................................................................2

100Mbps Fast Ethernet Introduction.........................................................3

100BASE-TX Technology Overview..........................................................3

Cables and Connectors........................................................................................3

Topology.............................................................................................................4

Network...............................................................................................................4

Hubs....................................................................................................................5

Connectivity Rules..............................................................................................5

Ethernet Switching Introduction................................................................6

2

E

XTERNAL

F

EATURES

.......................................................7

Front Panel................................................................................................7

LED Indicators..........................................................................................9

Rear Panel...............................................................................................10

3

I

NSTALLATION

................................................................13

Unpacking the Switch..............................................................................13

Installing the Switch ................................................................................14

Location ............................................................................................................14

viii

About This Guide

Rack Mounting..................................................................................................14

Connecting Power ...................................................................................15

Replacing the Fuse............................................................................................16

4

M

AKING

N

ETWORK

C

ONNECTIONS

...................................17

10BASE-T Connection.............................................................................17

100BASE-T Connection...........................................................................18

MII Connection........................................................................................19

5

U

SING THE

C

ONSOLE

I

NTERFACE

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

Connecting to the Switch.........................................................................21

Console Usage Conventions....................................................................22

First Time Connecting To The Switch .....................................................23

Steps to create a Super User or General User:...................................................24

Super and General User Privileges....................................................................24

Login On The Switch Console By Registered Users................................27

Changing your Password...................................................................................28

Adding and Deleting Users ...............................................................................29

Setting up the Switch................................................................................31

TCP/IP Settings.................................................................................................31

Out-of-band management and console settings.................................................33

Software Updates ..............................................................................................34

SNMP Information and Console Timeout.........................................................35

SNMP Traps......................................................................................................37

SNMP Security (Community Names)...............................................................38

Switch Configuration...............................................................................38

Controlling Individual Ports..............................................................................39

Forwarding Configuration ......................................................................40

Spanning Tree Protocol and Configuration............................................42

Introduction to Spanning Tree Protocol Parameters..........................................43

Setting Spanning Tree Protocol Parameters......................................................45

Monitoring the Switch .............................................................................49

About This Guide

ix

Displaying Port Statistics..................................................................................49

Resetting the Switch.................................................................................51

System Reset .....................................................................................................51

Factory Reset.....................................................................................................52

6

P

RODUCT

S

PECIFICATIONS

..............................................55

General....................................................................................................55

LED Indicators........................................................................................56

Environmental and Physical....................................................................56

7

C

ABLES AND

C

ONNECTORS

.............................................57

10BASE-T/100BASE-TX Connectors.......................................................57

Crossover Cable ......................................................................................59

MII Connector.........................................................................................59

RS-232 (DB9) Pin Specification..............................................................61

8

B

OOT

C

ONFIGURATION

F

ILE

............................................65

9

I

NDEX

............................................................................68

About This Guide

xi

0 A

BOUT

T

HIS

G

UIDE

This manual explains how to set up and use the D-Link DES-2212 12-port

Ethernet/Fast Ethernet switch. The contents include:

♦

Chapter 1 Introduction

Introduces the features of the DES-2212.

♦

Chapter 2 External Features

Introduces the external features

(including the front panel, LED indicators, and rear panel) of the DES-

2212 switching hub.

♦

Chapter 3 Installation

Tells how to unpack and install the switch.

♦

Chapter 4 Making Network Connections

Tells how to connect the

switch to network stations and to other parts of your network.

♦

Chapter 5 Using the Console Interface

Explains the use of the

console interface, which you can use to configure the hub with a

terminal or

telnet

connection.

♦

Appendix A Product Specifications

Lists the switch’s specifications,

the standards it meets, and certifications it has passed.

♦

Appendix B Cables and Connectors

Gives pinout information for

the 10BASE-T, 100BASE-TX, MII (Media Independent Interface)

and console connectors on the switch.

♦

Appendix C

Boot Configuration File

Gives details on how to use

downloadable configuration files with the switch.

For information about how to manage your DES-2212 using a network

management system, see the appropriate

Management User’s Guide

.

4

1 I

NTRODUCTION

This chapter introduces the D-Link DES-2212 switch, and the technologies

that it uses to give you improved network performance and reliability.

DES-2212 Ethernet/Fast Ethernet

Switch

The DES-2212 is an Ethernet/Fast Ethernet switch for networks needing

improved performance, the ability to interconnect between 10Mbps and

100Mbps Ethernet networks, and SNMP network management capability.

Ports

The DES-2212 has twelve ports, four NWay 10BASE-TX

Ethernet/100BASE-TX Fast Ethernet ports, and eight 10BASE-T twisted-

pair Ethernet ports. Among the Fast Ethernet ports, one of the ports can also

use an industry-standard MII connector, making it possible to interface to

different types of 100BASE-X Fast Ethernet network media, such as

100BASE-FX fiber optic cable or 100BASE-T4 twisted pair.

Another of the 100BASE-TX ports can optionally serve as an uplink port,

making it possible to connect the port to a Fast Ethernet hub without using a

crossover cable.

2

Introduction

All of the ports can operate in either half-duplex or full-duplex mode. Full-

duplex operation, allowing the port to transmit and receive at the same time,

can double overall network bandwidth in many applications.

Switching

The DES-2212 uses store-and-forward technology to bridge packets between

ports. Forwarding and filtering occurs at full “wire speed,” 148,800 packets

per second (pps) for Fast Ethernet, and 14,880 pps for Ethernet. It has 2MB

of buffer memory for the 10Mbps ports, and 4MB for the 100Mbps ports.

The switch automatically learns Ethernet (MAC) addresses and stores them in

a forwarding table. In addition, it also supports static filtering, allowing

network administrators to define custom filters for network security or other

purposes.

The switch supports the IEEE 802.1d Spanning Tree Protocol, allowing you

to design your network with redundant bridge links.

Management

You can use any network management software supporting SNMP (the

Simple Network Management Protocol) to manage the DES-2212, including

D-Link’s Windows-based D-View management system. The DES-2212’s

internal intelligent management agent supports several standard SNMP

MIBs, along with its own proprietary management information base.

SNMP management can be done in-band, over the Ethernet or Fast Ethernet

network, or out-of-band, over the DES-2212’s RS-232 console port, using

SLIP (the Serial Line Internet Protocol).

In addition, you can manage the switch with an easy-to-use console interface,

either directly over the RS-232 console port, or over the network using the

Telnet protocol.

The management agent’s software is stored in Flash ROM, allowing easy

upgrade over the network.

Introduction

3

100Mbps Fast Ethernet Introduction

Computers today have become increasingly powerful, with the capability to

accommodate very sophisticated uses such as multimedia applications, video-

conferencing, and CAD/CAM. To utilize these technologically advanced

applications more efficiently, there is also a growing demand for faster

networks that can handle heavy network traffic.

Recognizing this need for greater bandwidth and lower latency, a variety of

technologies such as FDDI, ATM, and 100Mbps Fast Ethernet have been

adopted by many vendors. 100Mbps Fast Ethernet technology stands out as

the most inexpensive and smoothest migration path for existing 10Mbps

Ethernet users.

100Mbps Fast Ethernet is a relatively new standard specified by the IEEE

802.3 networking standards committee. It is an extension of the 10Mbps

Ethernet standard with the ability to transmit and receive data at 100Mbps,

while maintaining the CSMA/CD Ethernet protocol. Since the 100Mbps Fast

Ethernet is compatible with all other 10Mbps Ethernet environments, it

provides a straightforward upgrade without wasting the company’s existing

investment in hardware, software, and trained personnel.

100BASE-TX Technology Overview

This section briefly describes a few of the technical aspects of using a

100Mbps Ethernet network.

Cables and Connectors

Category 5 unshielded twisted-pair (UTP) cables are supported. Cat 5 UTP

cable uses the same RJ-45 connector used with 10BASE-T, wired in exactly

the same configuration. However, the punch-down blocks in the wiring

4

Introduction

closet must be Category 5 certified. Where these blocks do not meet the

standard, an upgrade is necessary.

Topology

A Fast Ethernet workgroup is configured in a star topology and is built

around a maximum of two repeaters. Each workgroup forms a separate LAN

(also known as a segment or collision domain), and these workgroups can be

easily interconnected through switches, bridges, or routers to form one LAN

large enough to encompass a high-rise building or campus environment.

Recent innovations in LAN hub technology such as stackable hubs, coupled

with the decreasing cost of switches, bridges, and routers, allow the design of

low-cost, efficient Fast Ethernet workgroups and enterprise LANs.

The following factors strongly influence the architecture of Fast Ethernet

networks:

♦ The EIA/TIA 568 Wiring Standard imposes a 100 meter limit on

horizontal runs of twisted-pair cables; that is, connections from the

wiring closet to the end-station.

♦ Fast Ethernet’s increased operational speed reduces the maximum

distance between all elements of the LAN (see below).

♦ The EIA/TIA 568 Wiring Standard does not support the use of coaxial

cables for horizontal wiring.

Network

Network diameter, which is the distance between two end-stations in the

same collision domain, is the primary difference between traditional Ethernet

and Fast Ethernet. Due to the increased speed in Fast Ethernet and adherence

to the EIA/TIA 568 wiring rules, the network diameter of a Fast Ethernet

collision domain is limited to 205 meters; in contrast, the maximum

10BASE-T Ethernet collision domain diameter can be up to 2500 meters.

Introduction

5

Hubs

Unlike 10BASE-T hubs, which are all functionally identical, Fast Ethernet

repeater hubs are divided into two distinct types: Class I and Class II. A

Class I hub repeats all incoming signals on one port to the other ports by first

translating them to digital signals and then retranslating them back to line

signals. These translations are necessary when connecting various network

media to the same collision domain, such as when combining two wire-pair

100BASE-TX media with four wire-pair 100BASE-T4 media. Only one

Class I hub can exist within the same collision domain, thus this type of hub

cannot be cascaded. A Class II repeater, on the other hand, immediately

repeats all incoming line signals on one port to the other ports; no translations

are performed. This type of hub connects identical media to the same

collision domain; for example, TX to TX. At most, two Class II hubs can

exist within the same collision domain. The cable used to cascade these hubs

is called an inter-repeater link (IRL).

As mentioned earlier, stackable hubs can be used to increase the number of

available nodes in a collision domain. An entire hub stack counts as a single

repeater.

Connectivity Rules

Fast Ethernet networks should respect the following limitations:

♦ The maximum length of a twisted-pair segment (that is, distance

between a port in the hub to a single-address network device such as a

PC, server, or LAN switch) is 100 meters.

♦ The maximum diameter in a collision domain is about 205 meters

using two Class II hubs and 200 meters using one Class I hub.

♦ Between any two end-stations in a collision domain, there may be up

to three segments and two Class II hubs or two segments and one

Class I hub.

6

Introduction

Ethernet Switching Introduction

Another approach to pushing beyond the limits of Ethernet technology is the

development of switching technology. A switch bridges Ethernet packets at

the lowest (MAC address) level between connected Ethernet or Fast Ethernet

LAN segments.

Switching is a cost-effective way of increasing the total network capacity

available to users on a local area network. A switch increases capacity and

decreases network loading by making it possible for a local area network to

be divided into different segments (also called collision domains) which

don’t compete with each other for network transmission capacity, giving a

decreased load on each.

The switch acts as a high-speed selective bridge between the individual

segments. Traffic that needs to go from one segment to another is

automatically forwarded by the switch, without interfering with any other

segments. This allows the total network capacity to be multiplied, while still

maintaining the same network cabling and adapter cards.

For Fast Ethernet networks, a switch is an effective way of eliminating

problems of chaining hubs beyond the “two-repeater limit.” A switch can be

used to split parts of the network into different collision domains, making it

possible to expand your Fast Ethernet network beyond the 205 meter network

diameter limit for 100BASE-TX networks. Switches supporting both

traditional 10Mbps Ethernet and 100Mbps Fast Ethernet are also ideal for

bridging between existing 10Mbps networks and new 100Mbps networks.

Switching LAN technology is a marked improvement over the previous

generation of network bridges, which were characterized by higher latencies.

Routers have also been used to segment local area networks, but the cost of a

router and the setup and maintenance required make routers relatively

impractical. Today’s switches are an ideal solution to most kinds of local

area network congestion problems.

5

2 E

XTERNAL

F

EATURES

This chapter explains the features visible on the front and rear panels of the

DES-2212 Ethernet switch.

Front Panel

A front view of the DES-2212 Ethernet switch is shown below.

8

External Features

♦ LED Indicator Panel Gives status information about the switch

itself, as well as each of the switch ports. The LED indicator panel is

described in detail in the next section.

♦ Console Port The diagnostic console port is a standard RS-232 DB-9

connector, which can be used to connect a terminal or terminal

emulator to the switch, in order to configure or manage the hub. The

port can also be used for out-of-band network management. See the

Using the Console Interface chapter starting on page 21 for complete

information about using the console port.

♦ 100Mbps Ports The 10/100Mbps ports (ports 1 through 4) are

NWay 10BASE-T/100BASE-TX MDI-X ports, suitable for

connecting directly to Ethernet or Fast Ethernet hosts or other network

equipment. The NWay feature allows the switch to automatically

detect the speed of the network connection.

♦ 10Mbps Ports The 10Mbps ports (ports 5 through 12) are 10BASE-

TX MDI-X ports, suitable for connecting directly to Ethernet hosts or

other network equipment.

♦ Uplink Port The Uplink Port is identical to Port 1, except that it is an

MDI port instead of an MDI-X port. This means that you can use it to

connect directly to a Fast Ethernet hub or switch without using a

crossover cable.

Note that the Uplink Port and Port 1 are really the same port, which

means you can’t connect devices to both Port 1 and the Uplink Port at the

same time.

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