LevelOne GSW-2476 User Manual

LevelOne

GSW-2476

24-Port Gigabit w/ 4-Port SFP

Web Smart Switch

User Manual

Version 1.0-0608

COMPLIANCES

FCC - Class A

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 the instruction manual, 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.

You are cautioned that changes or modifications not expressly approved by the party responsible for compliance could void your authority to operate the equipment.

You may use unshielded twisted-pair (UTP) for RJ-45 connections - Category 3 or better for 10 Mbps connections, Category 5 or better for 100 Mbps connections, Category 5, 5e, or 6 for 1000 Mbps connections. For fiber optic connections, you may use 50/125 or 62.5/125 micron multimode fiber or 9/125 micron single-mode fiber.

iii

OMPLIANCES

CE Mark Declaration of Conformance for EMI and Safety (EEC)

This information technology equipment complies with the requirements of the Council Directive 89/336/EEC on the Approximation of the laws of the Member States relating to Electromagnetic Compatibility and 73/23/EEC for electrical equipment used within certain voltage limits and the Amendment Directive 93/68/EEC. For the evaluation of the compliance with these Directives, the following standards were applied:

RFI Emission:

Immunity:

LVD:

War ni ng :

Do not plug a phone jack connector in the RJ-45 port. This may damage this device.

• Limit class A according to EN 55022:1998

• Limit class A for harmonic current emission according to EN 61000-3-2/1995

• Limitation of voltage fluctuation and flicker in low-voltage supply system according to EN 61000-3-3/1995

• Product family standard according to EN 55024:1998

• Electrostatic Discharge according to EN 61000-4-2:1995 (Contact Discharge: ±4 kV, Air Discharge: ±8 kV)

• Radio-frequency electromagnetic field according to EN 61000-4-3:1996 (80 - 1000 MHz with 1 kHz AM 80% Modulation: 3 V/m)

• Electrical fast transient/burst according to EN 61000-4-4:1995 (AC/ DC power supply: ±1 kV, Data/Signal lines: ±0.5 kV)

• Surge immunity test according to EN 61000-4-5:1995 (AC/DC Line to Line: ±1 kV, AC/DC Line to Earth: ±2 kV)

• Immunity to conducted disturbances, Induced by radio-frequency fields: EN 61000-4-6:1996 (0.15 - 80 MHz with 1 kHz AM 80% Modulation: 3 V/m)

• Power frequency magnetic field immunity test according to EN 61000-4-8:1993 (1 A/m at frequency 50 Hz)

• Voltage dips, short interruptions and voltage variations immunity test according to EN 61000-4-11:1994 (>95% Reduction @10 ms, 30% Reduction @500 ms, >95% Reduction @5000 ms)

• EN 60950-1:2001

OMPLIANCES

Safety Compliance

Warning: Fiber Optic Port Safety

CLASS I

LASER DEVICE

When using a fiber optic port, never look at the transmit laser while it is powered on. Also, never look directly at the fiber TX port and fiber cable ends when they are powered on.

Avertissment: Ports pour fibres optiques - sécurité sur le plan optique

DISPOSITIF LASER

DE CLASSE I

Ne regardez jamais le laser tant qu’il est sous tension. Ne regardez jamais directement le port TX (Transmission) à fibres optiques et les embouts de câbles à fibres optiques tant qu’ils sont sous tension.

Warnhinweis: Faseroptikanschlüsse - Optische Sicherheit

LASERGER DER KLASSE I

Niemals ein Übertragungslaser betrachten, während dieses

ÄT

eingeschaltet ist. Niemals direkt auf den Faser-TX-Anschluß und auf die Faserkabelenden schauen, während diese eingeschaltet sind.

Power Cord Safety

Please read the following safety information carefully before installing this switch:

War ni ng :

• The unit must be connected to an earthed (grounded) outlet to comply with international

• Do not connect the unit to an A.C. outlet (power supply) without an earth (ground)

• The appliance coupler (the connector to the unit and not the wall plug) must have a

• The socket outlet must be near to the unit and easily accessible. You can only remove power

• This unit operates under SELV (Safety Extra Low Voltage) conditions according to

Installation and removal of the unit must be carried out by qualified personnel only.

safety standards.

connection.

configuration for mating with an EN 60320/IEC 320 appliance inlet.

from the unit by disconnecting the power cord from the outlet.

IEC 60950. The conditions are only maintained if the equipment to which it is connected also operates under SELV conditions.

OMPLIANCES

Important! Before making connections, make sure you have the correct cord set. Check it (read the label on the cable) against the following:

Power Cord Set

U.S.A. and Canada The cord set must be UL-approved and CSA certified.

The minimum specifications for the flexible cord are:

- No. 18 AWG - not longer than 2 meters, or 16 AWG.

- Type SV or SJ

- 3-conductor

The cord set must have a rated current capacity of at least 10 A

The attac hment plug m ust be an earth-grounding type with NEMA 5-15P (15 A, 125 V) or NEMA 6-15P (15 A, 250 V) configuration.

Denmark The supply plug must comply with Section 107-2-D1, Standard

Switzerland The supply plug must comply with SEV/ASE 1011.

U.K. The supply plug must comply with BS1363 (3-pin 13 A) and be

Europe The supply plug must comply with CEE7/7 (“SCHUKO”).

DK2-1a or DK2-5a.

fitted with a 5 A fuse which complies with BS1362.

The mains cord must be <HAR> or <BASEC> marked and be of type HO3VVF3GO.75 (minimum).

IEC-320 receptacle.

OMPLIANCES

Warnings and Cautionary Messages

Warning: This product does not contain any serviceable user parts.

Warning: Installation and removal of the unit must be carried out by qualified personnel

Warning: When connecting this device to a power outlet, connect the field ground lead

Warning: This switch uses lasers to transmit signals over fiber optic cable. The lasers are

Caution: Wear an anti-static wrist strap or take other suitable measures to prevent

Caution: Do not plug a phone jack connector in the RJ-45 port. This may damage this

Caution: Use only twisted-pair cables with RJ-45 connectors that conform to FCC

only.

on the tri-pole power plug to a valid earth ground line to prevent electrical hazards.

compliant with the requirements of a Class 1 Laser Product and are inherently eye safe in normal operation. However, you should never look directly at a transmit port when it is powered on.

electrostatic discharge when handling this equipment.

device. Les raccordeurs ne sont pas utilisé pour le système téléphonique!

standards.

Environmental Statement

The manufacturer of this product endeavours to sustain an environmentally-friendly policy throughout the entire production process. This is achieved though the following means:

• Adherence to national legislation and regulations on environmental production standards.

• Conservation of operational resources.

• Waste reduction and safe disposal of all harmful un-recyclable by-products.

• Recycling of all reusable waste content.

• Design of products to maximize recyclables at the end of the product’s life span.

• Continual monitoring of safety standards.

End of Product Life Span

This product is manufactured in such a way as to allow for the recovery and disposal of all included electrical components once the product has reached the end of its life.

Manufacturing Materials

There are no hazardous nor ozone-depleting materials in this product.

Documentation

All printed documentation for this product uses biodegradable paper that originates from sustained and managed forests. The inks used in the printing process are non-toxic.

vii

OMPLIANCES

Purpose

This guide details the hardware features of this switch, including Its physical and performance-related characteristics, and how to install the switch.

Audience

This guide is for system administrators with a working knowledge of network management. You should be familiar with switching and networking concepts.

Related Publications

As part of the switch firmware, there is an online web-based help that describes all management related features.

viii

ABLE OF

ONTENTS

1 About GSW-2476 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Switch Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Network Management Options . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Description of Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

10/100/1000BASE-T Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

SFP Slots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Port and Power Status LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Power Supply Socket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Features and Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Expandability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

2 Network Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Introduction to Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Application Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Collapsed Backbone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Central Wiring Closet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Remote Connections with Fiber Cable . . . . . . . . . . . . . . . . . . . . 2-4

Making VLAN Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Application Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

3 Installing the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Selecting a Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Ethernet Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Equipment Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Package Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Optional Rack-Mounting Equipment . . . . . . . . . . . . . . . . . . . . . 3-3

Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Rack Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Desktop or Shelf Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Installing an SFP Transceiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Connecting to a Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

ABLE OF CONTENTS

4 Making Network Connections . . . . . . . . . . . . . . . . . . . 4-1

Connecting Network Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Twisted-Pair Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Cabling Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Connecting to PCs, Servers, Hubs and Switches . . . . . . . . . . . . 4-2

Network Wiring Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Fiber Optic SFP Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Connectivity Rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

1000BASE-T Cable Requirements . . . . . . . . . . . . . . . . . . . . . . . 4-6

1000 Mbps Gigabit Ethernet Collision Domain . . . . . . . . . . . . . 4-6

100 Mbps Fast Ethernet Collision Domain . . . . . . . 4-7

10 Mbps Ethernet Collision Domain . . . . . . . . . . . . . . . . . . . . . 4-7

Cable Labeling and Connection Records . . . . . . . . . . . . . . . . . . . . . . . . 4-8

5 Configuring the Switch . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Using the Web Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Navigating the Web Browser Interface . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Home Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Configuration Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Panel Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

Web Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

Displaying Status Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

Showing Port Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

Displaying System Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13

Setting the Switch’s IP Address . . . . . . . . . . . . . . . . . . . . . . . . 5-14

Configuring the Logon Password . . . . . . . . . . . . . . . . . . . . . . . 5-15

Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16

Static MAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19

Counter Config . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-20

Port Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-21

Storm Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Port Mirroring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Cable Diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Trunks Membership . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Trunk Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

3 4 5 6 7

ABLE OF CONTENTS

VLAN Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-

QOS Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

IGMP Snoop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-

A Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Diagnosing Switch Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Power and Cooling Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

In-Band Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

Reset the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3

B Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-1

Twisted-Pair Cable and Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . B-1

10BASE-T/100BASE-TX Pin Assignments . . . . . . . . . . . . . . . . B-2

Straight-Through Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3

Crossover Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4

1000BASE-T Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . B-5

Cable Testing for Existing Category 5 Cable . . . . . . . . . . . . . . . B-5

Adjusting Existing Category 5 Cabling to Run 1000BASE-T . . B-6

Fiber Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-6

C Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-1

Physical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1

Switch Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2

Management Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2

Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3

Compliances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3

3 4

Glossary

Index

ABLE OF CONTENTS

xii

ABLES

Table 1-1 Port Status LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Table 1-2 Power Status LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Table 4-1 Maximum 1000BASE-T Gigabit Ethernet Cable Length . . . . 4-6

Table 4-2 Maximum 1000BASE-SX Fiber Optic Cable Length . . . . . . . 4-6

Table 4-3 Maximum 1000BASE-LX Fiber Optic Cable Length . . . . . . . 4-7

Table 4-4 Maximum 1000BASE-ZX Fiber Optic Cable Length . . . . . . 4-7

Table 4-5 Maximum Fast Ethernet Cable Length . . . . . . . . . . . . . . . . . . 4-7

Table 4-6 Maximum Ethernet Cable Length . . . . . . . . . . . . . . . . . . . . . . 4-7

Table 5-1 Web Page Configuration Buttons . . . . . . . . . . . . . . . . . . . . . . 5-3

Table 5-2 Switch Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

Table 5-3 Port Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

Table A-1 Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-1

Table B-1 10/100BASE-TX MDI and MDI-X Port Pinouts . . . . . . . . . B-2

Table B-2 1000BASE-T MDI and MDI-X Port Pinouts . . . . . . . . . . . . . B-5

xiii

IGURES

Figure 1-1 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Figure 1-2 Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Figure 1-3 Port LEDs and Power LED . . . . . . . . . . . . . . . . . . . . . . . 1-4

Figure 1-4 Power Supply Socket . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Figure 2-1 Collapsed Backbone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Figure 2-2 Central Wiring Closet . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Figure 2-3 Remote Connections with Fiber Cable . . . . . . . . . . . . . . 2-4

Figure 2-4 Making VLAN Connections . . . . . . . . . . . . . . . . . . . . . . . 2-5

Figure 3-1 RJ-45 Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Figure 3-2 Attaching the Brackets . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Figure 3-3 Installing the Switch in a Rack . . . . . . . . . . . . . . . . . . . . . 3-5

Figure 3-4 Attaching the Adhesive Feet . . . . . . . . . . . . . . . . . . . . . . 3-6

Figure 3-5 Inserting an SFP Transceiver into a Slot . . . . . . . . . . . . . 3-7

Figure 3-6 Power Socket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

Figure 4-1 Making Twisted-Pair Connections . . . . . . . . . . . . . . . . . . 4-2

Figure 4-2 Wiring Closet Connections . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Figure 4-3 Making Connections to SFP Transceivers . . . . . . . . . . . . 4-5

Figure 5-1 Home Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Figure 5-2 Front Panel Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Figure 5-3 Switch Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

Figure 5-4 Port Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13

Figure 5-5 System Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14

Figure 5-6 LAN Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15

Figure 5-7 Password Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16

Figure 5-8 Reset to Factory Defaults . . . . . . . . . . . . . . . . . . . . . . . . 5-17

Figure 5-9 Upgrade Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17

Figure 5-10 Restart Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18

Figure 5-11 Set boot Image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18

Figure 5-12 Restart Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19

Figure 5-13 Static MAC Address Configuration . . . . . . . . . . . . . . . . 5-20

Figure 5-14 Counter Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . 5-21

Figure 5-15 Port Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-22

Figure 5-1 Figure 5-1 Figure 5-1

6 Port Broadcast Control . . . . . . . . . . . . . . . . . . . . . . . . . . 5-24

7 Port Mirroring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-25

8 Cable Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26

xiv

IGURES

Figure 5Figure 5-2 Figure 5-2 Figure 5-2 Figure 5-2 Figure 5-2 Figure 5-2 Figure 5Figure 5-

Figure B-1 RJ-45 Connector Pin Numbers . . . . . . . . . . . . . . . . . . . . B-1

Figure B-2 Straight-through Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . B-3

Figure B-3 Crossover Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4

19 Trunk Membership . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-27

0 Trunk Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-28

1 VLAN Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-31

2 802.1Q VLAN Configuration . . . . . . . . . . . . . . . . . . . . . 5-32

3 802.1Q VLAN Group . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-32

4 QoS Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-34

5 Management Access Filter Configuration . . . . . . . . . . . 5-35

26 IGMP Snooping Configuration . . . . . . . . . . . . . . . . . . . 5-37

27 IGMP Snoop Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-38

IGURES

xvi

10/100/1000 Mb

HAPTER

BOUT

GSW-2476

Overview

LevelOne GSW-2476 is an intelligent Layer 2 switch with 24 10/100/ 1000BASE-T ports, four of which are combination ports

with four SFP transceiver slots (see Figure 1-1, Ports 21-24).

that are shared

ort Status Indicators

GSW-2476 24 Port Gigabit w 4 Port SFP Web Smart Switch-/-

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Power

6 9 10

78123

21 222324

1000

Link/Act

1000

Link/Act

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13 14 15 16

ps RJ-45 Ports

678

17 18 19 20

Figure 1-1 Front Panel

Figure 1-2 Rear Panel

* If an SFP transceiver is plugged in, the corresponding RJ-45 port is disabled for ports 21-24.

9101112

21 22 23 24

21 22

1000BASE-T/SFP Ports

Power Socket

SharedSFP Port

100-240V

50-60Hz0.8A

1-1

BOUT

GSW-2476

Switch Architecture

The switch employs a wire-speed, non-blocking switching fabric. This permits simultaneous wire-speed transport of multiple packets at low latency on all ports. The switch also features full-duplex capability on all ports, which effectively doubles the bandwidth of each connection.

The switch uses store-and-forward switching to ensure maximum data integrity. With store-and-forward switching, the entire packet must be received into a buffer and checked for validity before being forwarded. This prevents errors from being propagated throughout the network.

Network Management Options

The switch contains a comprehensive array of LEDs for “at-a-glance” monitoring of network and port status. They also include a management agent that allows you to configure or monitor the switch using its embedded management software.

1-2

ESCRIPTION OF HARDWARE

Description of Hardware

10/100/1000BASE-T Ports

The switch contains 24 RJ-45 ports that operate at 10 Mbps or 100 Mbps, half or full duplex, or at 1000 Mbps, full duplex. Because all ports on the switch support automatic MDI/MDI-X operation, you can use straight-through cables for all network connections to PCs or servers, or to other switches or hubs. (See “1000BASE-T Pin Assignments” on page B-5.)

Each of these ports support auto-negotiation, so the optimum transmission mode (half or full duplex), and data rate (10, 100, or 1000 Mbps) can be selected automatically. If a device connected to one of these ports does not support auto-negotiation, the communication mode of that port can be configured manually.

SFP Slots

The Small Form Factor Pluggable (SFP) transceiver slots are shared with four of the RJ-45 ports (ports 21-24). In its default configuration, if an SFP transceiver (purchased separately) is installed in a slot and has a valid link on its port, the associated RJ-45 port is disabled and cannot be used. The switch can also be configured to force the use of an RJ-45 port or SFP slot, as required.

Port and Power Status LEDs

The switch includes a display panel for key system and port indications that simplify installation and network troubleshooting. The LEDs, which are located on the front panel for easy viewing, are shown below and described in the following tables.

1-3

6 9 10

131415 161718 19 20

21 222324

Link/Act

Power

1000

4 Port SFP Web Smart Switch-

BOUT

GSW-2476

Port Status LEDsPower Status LED

Figure 1-3 Port LEDs and Power LED

Table 1-1 Port Status LEDs

LED Condition Status

Fast Ethernet Ports (Ports 1-24) Link/Act

(Link/Activity)

1000 Mbps On Green Port is operating at 1000 Mbps.

On/Flashing Green

Port has established a valid network connection. Flashing indicates activity.

Off There is no valid link on the port.

Off Port is operating at 10 or 100 Mbps.

1-4

Table 1-2 Power Status LED

LED Condition Status

Power Green Internal power is operating normally.

Off Power off.

EATURES AND BENEFITS

Power Supply Socket

The power socket is located on the rear panel of the switch. The standard power socket is for the AC power cord.

100-240V

50-60Hz 0.8A

Figure 1-4 Power Supply Socket

Features and Benefits

Connectivity

• 24 10/100/1000 Mbps ports for easy Gigabit Ethernet integration and for protection of your investment in legacy LAN equipment.

• Auto-negotiation enables each RJ-45 port to automatically select the optimum communication mode (half or full duplex) if this feature is supported by the attached device; otherwise the port can be configured manually.

• RJ-45 10/100/1000BASE-T ports support auto MDI/MDI-X pinout selection.

• Unshielded (UTP) cable supported on all RJ-45 ports: Category 3 or better for 10 Mbps connections, Category 5 or better for 100 Mbps connections, and Category 5, 5e, 6 or better for 1000 Mbps connections.

• IEEE 802.3-2005 Ethernet, Fast Ethernet, and Gigabit Ethernet.

1-5

BOUT

GSW-2476

Expandability

• 4 Small Form Factor Pluggable (SFP) transceiver slots (shared with 1000BASE-T ports)

• Supports 1000BASE-SX, 1000BASE-LX and 1000BASE-ZX SFP transceivers.

Performance

• Transparent bridging.

• Provides store-and-forward switching

• Supports Jumbo frames up to 9.6 Kbytes

• Supports flow control

• Broadcast storm control

Management

• “At-a-glance” LEDs for easy troubleshooting.

• Network management agent

• Supports web-based interface

1-6

HAPTER

ETWORK

LANNING

Introduction to Switching

A network switch allows simultaneous transmission of multiple packets via non-crossbar switching. This means that it can partition a network more efficiently than bridges or routers. Switches have, therefore, been recognized as one of the most important building blocks for today’s networking technology.

When performance bottlenecks are caused by congestion at the network access point (such as the network card for a high-volume file server), the device experiencing congestion (server, power user or hub) can be attached directly to a switched port. And, by using full-duplex mode, the bandwidth of the dedicated segment can be doubled to maximize throughput.

When networks are based on repeater (hub) technology, the distance between end stations is limited by a maximum hop count. However, a switch turns the hop count back to zero. So subdividing the network into smaller and more manageable segments, and linking them to the larger network by means of a switch, removes this limitation.

A switch can be easily configured in any Ethernet, Fast Ethernet, or Gigabit Ethernet, network to significantly boost bandwidth while using conventional cabling and network cards.

2-1

ETWORK PLANNING

Application Examples

GSW-2476 is not only designed to segment your network, but also to provide a wide range of options in setting up network connections. Some typical applications are described below.

Collapsed Backbone

GSW-2476 is an excellent choice for mixed Ethernet, Fast Ethernet, and Gigabit Ethernet installations where significant growth is expected in the near future. In a basic stand-alone configuration, it can provide direct fullduplex connections for up to 24 workstations or servers. You can easily build on this basic configuration, adding direct full-duplex connections to workstations or servers. When the time comes for further expansion, just connect to another hub or switch using one of the Gigabit Ethernet ports built into the front panel, or a Gigabit Ethernet port on a plug-in SFP transceiver.

In the figure below, the 24-port switch is operating as a collapsed backbone for a small LAN. It is providing dedicated 10 Mbps full-duplex connections to workstations, 100 Mbps full-duplex connections to power users, and 1 Gbps full-duplex connections to servers.

2-2

level

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...

Servers

1 Gbps

GSW-2476 24 Port Gigabit w 4 Port SFP Web Smart Switch-/-

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21 22

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...

Workstations

100 Mbps

Figure 2-1 Collapsed Backbone

9101112

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SharedSFP Port

21 22

...

Workstations

10 Mbps

PPLICATION EXAMPLES

Central Wiring Closet

With 24 parallel bridging ports (i.e., 24 distinct collision domains), this switch can collapse a complex network down into a single efficient bridged node, increasing overall bandwidth and throughput.

In the figure below, the 1000BASE-T RJ-45 ports on the switch are providing 1 Gbps full-duplex connections for up to 24 local segments. In addition, the switch is also connecting remote servers over fiber optic cable at 1 Gbps.

10/100/1000 Switch

GSW-2476 24 Port Gigabit w 4 Port SFP Web Smart Switch-/-

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6 9 10

12781234

1000

Link/Act

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21 222324

Power

13 14 15 16

10/100 Mbps Segments

678

17 18 19 20

9101112

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SharedSFPPort

21 222324

Server Farm

...

Figure 2-2 Central Wiring Closet

2-3

ETWORK PLANNING

Remote Connections with Fiber Cable

Fiber optic technology allows for longer cabling than any other media type. A 1000BASE-SX (MMF) link can connect to a site up to 550 meters away, a 1000BASE-LX (SMF) link up to 10 km, and a 1000BASE-ZX link up to 70 km. This allows a switch stack to serve as a collapsed backbone, providing direct connectivity for a widespread LAN.

A 1000BASE-SX SFP transceiver can be used for a high-speed connection between floors in the same building, and a 1000BASE-LX transceiver can be used for high-bandwidth core connections between buildings in a campus setting. For long-haul connections, a 1000BASE-ZX SFP transceiver can be used to reach another site up to 100 kilometers away.

The figure below illustrates three GSW-2476 switches stack interconnecting multiple segments with fiber cable.

Headquarters

GSW-2476 24 Port Gigabit w 4 Port SFP Web Smart Switch-/-

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12781234

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SharedSFP Port

21 222324

1000BASE-SX MMF (500 m)

Server Farm

Remote Switch Remote Switch

678

1234

level

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GSW-247624Port Gigabitw 4Port SFPWeb SmartSwitch-/-

6910

12781234

1314151617181920

Power

9101112

1000

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1000

Link/Act

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17 18 19 20

21 22 23 24

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SharedSFPPort

10/100 Mbps Segments

...

Figure 2-3 Remote Connections with Fiber Cable

2-4

level

o n e

GSW-247624Port Gigabitw 4Port SFPWeb SmartSwitch-/-

1000BASE-LX SMF (5 kilometers)

678

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...

PPLICATION EXAMPLES

Making VLAN Connections

The switch supports VLANs that can be used to organize any group of network nodes into separate broadcast domains. VLANs confine broadcast traffic to the originating group, and can eliminate broadcast storms in large networks. This provides a more secure and cleaner network environment.

VLANs can be based on untagged port groups, or traffic can be explicitly tagged to identify the VLAN group to which it belongs. Untagged VLANs can be used for small networks attached to a single switch. However, tagged VLANs should be used for larger networks, and all the VLANs assigned to the inter-switch links.

R&D

Testing

VLAN 1

VLAN 2

GSW-247624 Port Gigabit w 4 Port SFP Web Smart Switch-/-

Tagged

Ports

Finance

VLAN 3

VLAN 4

level

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Untagged Ports

Power

Marketing

12781234

13141516171819 20

unaware

6 9 10

VLAN

switch

1000

Link/Act

1000

Link/Act

21222324

Figure 2-4 Making VLAN Connections

1234

13 14 15 16

17 18 19 20

Finance

VLAN 3

678

9101112

21 22 23 24

Tagged Port

SharedSFPPort

21 222324

VLAN 1

R&D

VLAN 2

VLAN aware switch

Testing

Note: When connecting to a switch that does not support IEEE 802.1Q

VLAN tags, use untagged ports.

2-5

ETWORK PLANNING

Application Notes

1. Full-duplex operation only applies to point-to-point access (such as

when a switch is attached to a workstation, server or another switch). When the switch is connected to a hub, both devices must operate in half-duplex mode.

2. For network applications that require routing between dissimilar

network types, you can attach the switch directly to a multi-protocol router.

3. As a general rule, the length of fiber optic cable for a single switched

link should not exceed:

• 1000BASE-SX: 550 m (1805 ft) for multimode fiber

• 1000BASE-LX: 10 km (6.2 miles) for single-mode fiber

• 1000BASE-ZX: 70 km (43.5 miles) for single-mode fiber

However, power budget constraints must also be considered when calculating the maximum cable length for your specific environment.

2-6

HAPTER

NSTALLING THE

Selecting a Site

GSW-2476 can be mounted in a standard 19-inch equipment rack or on a flat surface. Be sure to follow the guidelines below when choosing a location.

• The site should:

- be at the center of all the devices you want to link and near a power

outlet.

- be able to maintain its temperature within 0 to 40 °C (32 to 104 °F) and

its humidity within 10% to 90%, non-condensing

- provide adequate space (approximately five centimeters or two inches)

on all sides for proper air flow

- be accessible for installing, cabling and maintaining the devices

- allow the status LEDs to be clearly visible

WITCH

• Make sure twisted-pair cable is always routed away from power lines, fluorescent lighting fixtures and other sources of electrical interference, such as radios and transmitters.

• Make sure that the unit is connected to a separate grounded power outlet that provides 100 to 240 VAC, 50 to 60 Hz, is within 2 m (6.6 feet) of each device and is powered from an independent circuit breaker. As with any equipment, using a filter or surge suppressor is recommended.

3-1

NSTALLING THE SWITCH

Ethernet Cabling

To ensure proper operation when installing the switches into a network, make sure that the current cables are suitable for 10BASE-T, 100BASE-TX or 1000BASE-T operation. Check the following criteria against the current installation of your network:

• Cable type: Unshielded twisted pair (UTP) or shielded twisted pair (STP) cables with RJ-45 connectors; Category 3 or better for 10BASE-T, Category 5 or better for 100BASE-TX, and Category 5, 5e or 6 for 1000BASE-T.

• Protection from radio frequency interference emissions

• Electrical surge suppression

• Separation of electrical wires (switch related or other) and electromagnetic fields from data based network wiring

• Safe connections with no damaged cables, connectors or shields

RJ-45 Connector

3-2

Figure 3-1 RJ-45 Connections

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