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DES-3326
24-Port Fast Ethernet
Plus 2-Port Gigabit Module
Layer 3 Switch
User’s Guide
Second Edition (July 2002)
651ES3326025
Printed In Taiwan
RECYCLABLE
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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.
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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 O
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D-Link Offices for Registration and Warranty Service The product's Registration Card, provided at the back of this manual, must be sent to a D-Link office. To obtain an RMA number for warranty service as to a hardware product, or to obtain warranty service as to a software product, contact the D-Link office nearest you. An address/telephone/fax/e-mail/Web site list of D-Link offices is provided in the back of this manual. Trademarks Copyright 2002 D-Link Corporation. Contents subjec
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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.
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Table of Contents Introduction.......................................................................................................................................10 Layer 3 Switching ............................................................................................................................10 The Functions of a Layer 3 Switch.................................................................................................11 Features .....................................
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Internet Protocols ............................................................................................................................46 Packet Headers................................................................................................................................50 The Domain Name System...............................................................................................................54 DHCP Servers........................................................
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Runtime Switching Software Default Settings...................................................................................266 Understanding and Troubleshooting the Spanning Tree Protocol......................................................267 Blocking State.............................................................................................................................267 Listening State ........................................................................................
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DES-3326 Layer 3 Fast Ethernet Switch User’s Guide 1 INTRODUCTION This section describes the Layer 3 functionality and Layer 2 and Layer 3 features of the DES-3326. Some background information about Ethernet/Fast Ethernet, Gigabit Ethernet, and switching technology is presented. This is intended for readers who may not be familiar with the concepts of layered switching and routing but is not intended to be a complete or in-depth discussion. Layer 3 Switching Layer 3 switching is the in
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DES-3326 Layer 3 Fast Ethernet Switch User’s Guide The Functions of a Layer 3 Switch Traditional routers, once the core components of large networks, became an obstacle to the migration toward next-generation networks. Attempts to make software-based routers forward packets more quickly were inadequate. A layer 3 switch does everything to a packet that a traditional router does: • Determines forwarding path based on Layer 3 information • Validates the integrity of the Layer 3 header via
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DES-3326 Layer 3 Fast Ethernet Switch User’s Guide • Store and forward switching scheme. • Full and half-duplex for both 10Mbps and 100Mbps connections. The front-port Gigabit Ethernet module operates at full duplex only. Full duplex allows the switch port to simultaneously transmit and receive data, and only works with connections to full-duplex capable end stations and switches. Connections to hubs must take place at half-duplex. • Supports IEEE 802.3x flow control for full-duplex mode p
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DES-3326 Layer 3 Fast Ethernet Switch User’s Guide • Hardware-based Layer 3 IP switching. • IP packet forwarding rate of 6.6 Mpps. • 2K active IP address entry table per device. • Supports RIP – (Routing Information Protocol) version I and II. • Supports OSPF − (Open Shortest Path First) • Supports MD5 and Password OSPF Packet Authentication • Supports IP version 4. • IGMP version 1 and 2 support (RFC 1112 and RFC 2236). • Supports PIM Dense Mode. • Supports DVMRP. • Supports I
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DES-3326 Layer 3 Fast Ethernet Switch User’s Guide 802.1p MIB (RFC 2674). RIP MIB v2 (RFC 1724). • Supports Web-based management. • TFTP support. • BOOTP support. • BOOTP Relay Agent. • IP filtering on the management interface. • DHCP Client support. • DHCP Relay Agent. • DNS Relay Agent. • Password enabled. Optional Redundant Power Supply The DES-3326 24+2 Fast Ethernet Layer 3 Switch supports the optional DPS-1000 (Redundant Power Supply) to provide automatic power supply monit
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DES-3326 Layer 3 Fast Ethernet Switch User’s Guide 2 UNPACKING AND SETUP This chapter provides unpacking and setup information for the Switch. Unpacking Open the shipping carton of the Switch and carefully unpack its contents. The carton should contain the following items: ♦ One DES-3326 24-port Fast Ethernet Layer 3 Switch ♦ Mounting kit: 2 mounting brackets and screws ♦ Four rubber feet with adhesive backing ♦ One AC power cord ♦ This User’s Guide with Registration Card If any ite
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DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 2-1. Installing rubber feet for desktop installation Rack Installation The DES-3326 can be mounted in an EIA standard-sized, 19-inch rack, which can be placed in a wiring closet with other equipment. To install, attach the mounting brackets on the switch’s side panels (one on each side) and secure them with the screws provided. Figure 2- 2A. Attaching the mounting brackets to the switch Then, use the screws provided wi
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DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Power on The DES-3326 switch can be used with AC power supply 100-240 VAC, 50 - 60 Hz. The power switch is located at the rear of the unit adjacent to the AC power connector and the system fan. The switch’s power supply will adjust to the local power source automatically and may be turned on without having any or all LAN segment cables connected. After the power switch is turned on, the LED indicators should respond as follows: ♦ All LED
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DES-3326 Layer 3 Fast Ethernet Switch User’s Guide 3 IDENTIFYING EXTERNAL COMPONENTS This chapter describes the front panel, rear panel, optional plug-in modules, and LED indicators of the DES-3326. Front Panel The front panel of the Switch consists of LED indicators, an RS-232 communication port, a slide-in module slot, one switched MDI-X/MDI-II uplink port, and 23 (10/100 Mbps) Ethernet/Fast Ethernet ports. Figure 3-1. Front panel view of the Switch ♦ Comprehensive LED indicators
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DES-3326 Layer 3 Fast Ethernet Switch User’s Guide ♦ The AC power connector is a standard three-pronged connector that supports the power cord. Plug-in the female connector of the provided power cord into this socket, and the male side of the cord into a power outlet. Supported input voltages range from 100 ~ 240 VAC at 50 ~ 60 Hz. Side Panels The right side panel of the Switch contains two system fans (see the top part of the diagram below). The left side panel contains heat vents. Fi
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DES-3326 Layer 3 Fast Ethernet Switch User’s Guide 1000BASE-SX Fiber Module Figure 3-6. 1000BASE-SX two-port module ♦ Front-panel module. ♦ Connects to 1000BASE-SX devices at full duplex. ♦ Allows connections using multi-mode fiber optic cable in the following configurations: 62.5µm 62.5µm 50µm 50µm Modal bandwidth 160 200 400 500 (min. overfilled launch) Unit: MHz*km Operating distance 220 275 500 550 Unit: meters Channel insertion loss 2.33 2.53 3.25 3.43 Unit: dB 1000B
