Dell PowerConnect 3248 Manual de Usario

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Dell™PowerConnect™3248SystemsUser'sGuide

Caution: Safety Instructions

Introduction

Installation

Management Interface

VLANs

Appendix

Notes, Notices, and Cautions

Information in this document is subject to change without notice.

©2002DellComputerCorporation.Allrightsreserved.

Reproduction in any manner whatsoever without the written permission of Dell Computer Corporation is strictly forbidden.

Trademarks used in this text: Dell, the DELL logo, PowerConnect, Dimension, Inspiron, Dell Precision, OptiPlex, Latitude, and DellNet are trademarks of Dell Computer Corporation;

Microsoft and Windows are registered trademarks of Microsoft Corporation.

Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Computer Corporation

disclaims any proprietary interest in trademarks and trade names other than its own.

August2002P/N9P140Rev.A01

NOTE: A NOTE indicates important information that helps you make better use of your computer.

NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.

CAUTION: A CAUTION indicates a potential for property damage, personal injury, or death.

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Introduction

Dell™PowerConnect™3248SystemsUser'sGuide

Features

Front-Panel Components

Back-Panel Descriptions

Management

Features

TheDell™PowerConnect™3248FastEthernetManagedSwitchoffersthefollowingfeatures:

l48 10/100BASE- -TX auto sensing Fast Ethernet switching ports

lTwo 10/100/1000BASE-T auto-sensing Gigabit Ethernet switching ports that operate in combination with two Small Form Factor Pluggable (SFP)

transceiver slots

lIEEE 802.3u, IEEE 802.3z, and IEEE 802.3ab compliant

lUp to 8 kilobyte (KB)- entry, media access control (MAC) address cache

lIEEE 802.3x flow control for full duplex operation

lIEEE 802.1Q based tagged virtual local area network (VLAN)

lIEEE 802.1p Class of Service (CoS) through four priority queues for each port

lIEEE 802.3ad link aggregation, up to six aggregated trunks per switch

lSpanning tree protocol

lBroadcast storm control

lInternet group management protocol (IGMP) snooping support

lBack pressure flow control for half-duplex operation

lPort mirroring

lAuto MDI/MDIX support for the 10/100BASE- -TX and the 10/100/1000BASE T ports

lMAC addresses lookup based on port, VLAN ID, and MAC addresses

lRedundant power supply (RPS) support for uninterrupted operation

lSystem light- emitting diode (LED) and per port LEDs

lStandard 1U chassis

l19-inch rack-mountable

Management Features

lWeb-based management with embedded HTTP server

lText-based management through four in-band Telnet sessions and an out-of-band RS-232 console port (VT100)

lSimple network management protocol (SNMP)-based network management through an SNMP management console program

lRADIUS access control

lSoftware upload through Trivial File Transfer Protocol (TFTP)

lDual firmware image support

lSupports Boot Protocol (BOOTP) and Dynamic Host Configuration Protocol (DHCP) for IP address assignment

lHardware-assisted remote monitoring (RMON) statistic collection

lManagement information base (MIB) II (RFC 1213)

lInterfaces Evolution MIB (RFC 2863)

lEthernet-like MIB (RFC 2665)

lBridge MIB (RFC 1493)

lExtended Bridge MIB (RFC 2674)

lRMON MIB (RFC 2819)

lEntity MIB (RFC 2737)

lRADIUS authentication client MIB (RFC 2618)

lDell PowerConnect 3248 Private MIB

Front- Panel Components

The front panel of the switch contains the console port, all of the Ethernet ports, LEDs, and the Mode select button. As shown in the following figure, the

switch has three system LEDs and one LED for each port. The following sections describe the front panel in more detail.

PWR LED

The PWR (power) LED shows the general operating status of the system. Indicator states include:

lOff — The unit is off with no power connections.

lGreen — The unit's internal power supply is operating normally.

lRed — The unit's internal power supply has failed.

RPS LED

The RPS LED shows the operating status of a connected redundant power unit. Indicator states include:

lOff — The RPS is not connected.

lGreen — The RPS is operating normally.

lRed — The RPS has failed.

DIAG LED

The diagnostic (DIAG) LED shows the status of the system diagnostics during initialization. Indicator states include:

lBlinking green — The system diagnostic test is in progress.

lGreen — The system diagnostic test has completed successfully.

lRed — The system diagnostic test has detected a fault.

Console Port

You can access the console interface from the RS-232 serial port or a Telnet connection. The console port uses a standard null-modem cable. For instructions

on configuring your switch using the console, see "Management Interface."

Port LEDs

One LED shows the operating status of each Fast Ethernet and Gigabit Ethernet port. Each port LED has two modes of operation—link/activity or full duplex—