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10/100Mbps
Ethernet/Fast Ethernet
Switch
Model DES-2218
User’s Guide
Rev. 02 (October, 1997)
6DES2218..02
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. Bei der Auf
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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 OTHER LI
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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 conv
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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 substa
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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 Unite
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T C ABLE OF ONTENTS 0 ABOUT THIS GUIDE.......................................................... XI 1 INTRODUCTION .................................................................1 DES-2218 Ethernet/Fast Ethernet Switch ................................................. 1 Ports ....................................................................................................................1 Switching .............................................................................................
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Location ............................................................................................................14 Rack Mounting..................................................................................................14 Connecting Power ................................................................................... 15 Replacing the Fuse ............................................................................................16 4 MAKING NETWORK CONNECTIONS....................
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Setting Spanning Tree Protocol Parameters......................................................45 Monitoring the Switch ............................................................................. 49 Displaying Port Statistics ..................................................................................49 Resetting the Switch................................................................................. 51 System Reset .....................................................................
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0 ABOUT THIS GUIDE This manual explains how to set up and use the D-Link DES-2218 18-port Ethernet/Fast Ethernet switch. The contents include: ♦ Chapter 1 Introduction Introduces the features of the DES-2218. ♦ Chapter 2 External Features Introduces the external features (including the front panel, LED indicators, and rear panel) of the DES-2218 Ethernet switch. ♦ Chapter 3 Installation Tells how to unpack and install the switch. ♦ Chapter 4 Making Network Connections Tells how to connect
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1 1 INTRODUCTION This chapter introduces the D-Link DES-2218 switch, and the technologies that it uses to give you improved network performance and reliability. DES-2218 Ethernet/Fast Ethernet Switch The DES-2218 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-2218 has eighteen ports, two NWay 10BASE-TX Ethernet/100BASE-TX Fast Ethernet p
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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-2218 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
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DES-2218 Ethernet Switch User’s Guide The management agent’s software is stored in Flash ROM, allowing easy upgrade over the network. 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
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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 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 (
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DES-2218 Ethernet Switch User’s Guide 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. Hubs Unlike 10B
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♦ 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. Ethernet Switching Introduction Another approac
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DES-2218 Ethernet Switch User’s Guide 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
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