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IBM Nways 8271 F12 User Manual

Ethernet lan switch
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8271 Nways Ethernet LAN
Switch Models F12 and F24
User's Guide

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Summary of Contents for IBM Nways 8271 F12

  • Page 1 8271 Nways Ethernet LAN Switch Models F12 and F24 User’s Guide...
  • Page 2 Notice: This document may contain information about features, models and/or functions, not currently offered for sale by IBM. The inclusion of this information should NOT be interpreted as indicative that these features/models/functions currently exist in any IBM product or that IBM plans to offer them in the future.

  • Page 3: Table Of Contents

    ONTENTS AFETY NOTICES Safety Notices World Trade Safety Information BOUT UIDE Conventions Related Documentation NTRODUCING THE WITCH About the Switch Summary of Features Switch — Front View Detail 10BASE-T/ 100BASE-TX Ports LEDs Switch — Rear View Detail Unit Information Label Power Socket Redundant Power System Socket Console Port...
  • Page 4 NSTALLING THE WITCH Installing the Switch Following Safety Information Choosing a Suitable Site Rack-mounting Placing Units On Top of Each Other Stacking Units Stacking Two Units Stacking Multiple Units The Power-up Sequence Connecting a Redundant Power System Powering-up the Switch Checking for Correct Operation Choosing the Correct Cables Solving Problems Indicated by LEDs...
  • Page 5 OTICES RADEMARKS ARRANTIES Trademarks Statement of Limited Warranty Production Status The IBM Warranty for Machines Warranty Service Extent of Warranty Limitation of Liability Electronic Emission Notices for Shielded Twisted Pair (STP) Cable Federal Communications Commission (FCC) Statement Canadian Department of Communications (DOC) Compliance...

  • Page 7: Safety Notices

    Some countries require the safety information contained in publications Information to be presented in their national languages. Before using an English-language publication to set up, install, or operate this IBM product, you first should become familiar with the related safety information.
  • Page 8 Vorsicht: Bevor mit der Installation des Produktes begonnen wird, die Sicherheitshinweise in Achtung: Sicherheitsinformationen – Bitte zuerst lesen, IBM Form SD21-0030. Diese Veröffentlichung beschreibt die Sicherheitsvorkehrungen für das Verkabeln und Anschließen elktrischer Geräte.
  • Page 9 Safety Notices SD21-0030. Este documento describe los procedimientos de seguridad para cablear y enchufar equipos eléctricos. Perigo: Antes de começar a instalar este produto, leia as informações de segurança contidas em Cuidado: Informações Sobre Segurança – Leia Isto Primeiro, SD21-0030. Esse folheto descreve procedimentos de segurança para a instalação de cabos e conexões em equipamentos elétricos.
  • Page 10 AFETY NOTICES...
  • Page 11 Safety Notices...
  • Page 12 AFETY NOTICES...

  • Page 13: About This Guide

    UIDE This guide provides all the information you need to install and use the IBM 8271 Nways Ethernet LAN Switch Models F12 and F24 with default settings. If you want to change the way the Switch works using management software, refer to the “IBM 8271 Ethernet LAN Switch Management Guide”...

  • Page 14: Conventions

    Documentation IBM 8271 Nways Ethernet LAN Switch Management Guide, Part Number 35L2186 IBM 8271 Nways Ethernet LAN Switch Models F12 and F24 Quick Reference Guide, Part Number 35L2190 IBM 8271 Nways Ethernet LAN Switch Models F12 and F24 Quick Installation Guide, Part Number 35L2189...
  • Page 15 Related Documentation IBM 8271 Nways Ethernet LAN Switch Family Release Notes, Part Number 35L2184 Other publications you may find useful: Documentation accompanying the IBM 8271 Nways Ethernet LAN Switch Models E12 and E24. Documentation accompanying IBM 8271 Nways Ethernet LAN Switch Expansion Modules.
  • Page 16 BOUT UIDE...

  • Page 17: Introducing The Switch

    NTRODUCING THE WITCH This chapter contains introductory information about the Switch and how it can be used in your network. It covers the following topics: About the Switch Switch — Front View Detail Switch — Rear View Detail Network Configuration Examples Configuration Rules for Fast Ethernet Configuration Rules with Full Duplex...

  • Page 18: About The Switch

    Slot for an Expansion Module or Matrix Module Connects to Redundant Power System / Uninterruptable Power System 19-inch rack or stand-alone mounting For information about the software features of the Switch, refer to the “IBM 8271 Nways Ethernet LAN Switch Management Guide” (part number 35L2186).

  • Page 19: Switch - Front View Detail

    Switch — Front View Detail Switch — Front View Detail Figure 1 Switch — front view 10BASE-T/ The Switch has 12 or 24 auto-negotiating 10BASE-T/100BASE-TX ports 100BASE-TX Ports configured as MDIX (cross-over). These ports can be set to 10BASE-T half duplex, 10BASE-T full duplex, 100BASE-TX half duplex, 100BASE-TX full duplex, or they can automatically detect the speed and duplex mode of a link and provide the appropriate connection.
  • Page 20 1: I HAPTER NTRODUCING THE WITCH Table 1 LED behavior Color Indicates Port Status LEDs Packet Yellow Packets are being transmitted/received on the port. No packets are being transmitted/received on the port. Status Green A link is present, and the port is enabled. Green flashing A link is present, but the port is disabled.

  • Page 21: Switch - Rear View Detail

    Switch — Rear View Detail Switch — Rear View Detail Figure 2 Switch — rear view Unit Information This label displays the unique MAC address and serial number of the Label Switch. You may need this information for fault reporting purposes. Power Socket The Switch automatically adjusts its power setting to any supply voltage in the range 90–240V A.C.

  • Page 22: Matrix Port

    1: I HAPTER NTRODUCING THE WITCH more information about Matrix Modules, see “Stacking Units” on page When an Expansion Module or Matrix Module is not installed, ensure the blanking plate is secured in place. Matrix Port The matrix port allows you to: Stack the Switch with another Switch F12/F24 or Switch E12/E24 unit using a single Matrix Cable Stack the Switch with up to three other Switch F12/F24 or Switch...

  • Page 23: Network Configuration Examples

    Network Configuration Examples Network The following illustrations show some examples of how the Switch can be Configuration used in your network. Examples Network Figure 3 shows how the Switch F12/F24 stack can segment a network of Segmentation shared 10 Mbps and 100 Mbps connections. There is a 10/100 shared segment on each floor, and these segments are connected to the Switch which is positioned in the basement.

  • Page 24: Switch F12/F24 As A Collapsed Backbone Switch

    1: I HAPTER NTRODUCING THE WITCH Switch F12/F24 as a The example in Figure 4 shows how a Switch F12/F24 stack can act as a Collapsed Backbone backbone for both shared and switched network segments. Switch Figure 4 Using the Switch as a collapsed backbone...

  • Page 25: Switch F12/F24 As A Desktop Switch

    Network Configuration Examples Switch F12/F24 as a The example in Figure 5 shows how a Switch F12/F24 can be used for a group of users that require dedicated 10 Mbps or 100 Mbps connections Desktop Switch to the desktop. The Switch stack has a 1000BASE-SX Module that allows it to provide a Gigabit Ethernet link to a 1000BASE-SX Switch in the basement.

  • Page 26: Configuration Rules For Fast Ethernet

    1: I HAPTER NTRODUCING THE WITCH Configuration Rules The topology rules for 100 Mbps Fast Ethernet are slightly different to for Fast Ethernet those for 10 Mbps Ethernet. Figure 6 illustrates the key topology rules and provides examples of how they allow for large-scale Fast Ethernet networks.

  • Page 27: Configuration Rules With Full Duplex

    Configuration Rules with Full Duplex The key topology rules are: Maximum UTP cable length is 100m (328ft) over Category 5 cable. A 412m (1352ft) fiber run is allowed for connecting switch-to-switch, or endstation-to-switch, using half-duplex 100BASE-FX. A total network span of 325m (1066ft) is allowed in single-repeater topologies (one hub stack per wiring closet with a fiber run to the collapsed backbone).
  • Page 28 1: I HAPTER NTRODUCING THE WITCH...
  • Page 29 NSTALLING THE WITCH This chapter contains the information you need to install and set up the Switch. It covers the following topics: Installing the Switch Installing the Switch Rack-mounting Placing Units On Top of Each Other Stacking Units The Power-up Sequence Choosing the Correct Cables Solving Problems Indicated by LEDs Managing the Switch...

  • Page 30: Installing The Switch

    2: I HAPTER NSTALLING THE WITCH Installing the The following sections describe how to site and install your Switch. Switch Following Safety Before installing or removing any components from the Switch or Information carrying out any maintenance procedures, you must read the safety information Appendix A of this guide.
  • Page 31 Rack-mounting ATTENTION: Disconnect all cables from the Switch before continuing. Remove all self adhesive pads from the underside of the Switch if they have been fitted. 1 Place the Switch the right way up on a hard flat surface, with the front facing towards you.

  • Page 32: Placing Units On Top Of Each Other

    2: I HAPTER NSTALLING THE WITCH Placing Units On If the Switch units are free-standing, up to four units can be placed one Top of Each Other on top of the other. If mixing a variety of units, the smaller units must be positioned at the top.

  • Page 33: Stacking Multiple Units

    Stacking Units Ensure that both units have the same version of management software Ensure that you re-configure the stack-wide features on both units For more information about management software, see “Managing the Switch” on page 38. Figure 8 A stack of two units Stacking Multiple You can stack up to four Switch units with a single Matrix Module and Units...
  • Page 34 2: I HAPTER NSTALLING THE WITCH 4 Connect the Matrix Cables, as shown in Figure 9: a Connect a Matrix Cable to the port marked Unit 1 on the Matrix Module. Connect the other end of this cable to the matrix port of the Switch that contains the Matrix Module.

  • Page 35: The Power-Up Sequence

    The Power-up Sequence The Power-up The following sections describe how to get your Switch powered-up and Sequence ready for operation. Connecting a You can connect an Advanced Redundant Power System to the Switch. Redundant Power This unit, which is also known as an RPS, is designed to maintain the System power to your Switch if a power supply failure occurs.

  • Page 36: Choosing The Correct Cables

    2: I HAPTER NSTALLING THE WITCH Table 2 LED colors Color State Green The Switch is powered-up and operating normally Yellow The Switch has failed its Power On Self Test. This occurs if any of the ports fail during power-up. The Switch is not receiving power.

  • Page 37: Solving Problems Indicated By Leds

    Management software in the flashing even though stack passes packets between units even if there is no other traffic activity. there is no external traffic on this link For information about solving problem“IBM 8271 Nways Ethernet LAN Switch Management Guide” (35L2186).

  • Page 38: Managing The Switch

    Switch working, but if you do use it, you may improve the efficiency of the Switch and therefore improve the overall performance of your network. For information on managing the Switch using the management software, refer to the “IBM 8271 Nways Ethernet LAN Switch Management Guide” (35L2186).

  • Page 39: Safety Information

    AFETY NFORMATION You must read the following safety information before carrying out any installation or removal of components, or any maintenance procedures on the Switch. Power Cords A country-appropriate power cord must be ordered separately for each 8271 Ethernet LAN Switch. The feature codes and part numbers to be used to order these power cords are listed below.
  • Page 40 A: S PPENDIX AFETY NFORMATION Part Number Country (Feature Code) Bahamas Guyana 1838574 (F/C 6853) Barbados Haiti Bolivia Honduras Brazil Jamaica Costa Rica N. Antilles Dominican R. Panama El Salvador Peru Equador Trinidad Guatemala Venezuela Europe, Middle East, and Africa Albania Macedonia 13F9979 (F/C 6855)

  • Page 41: Important Safety Information

    Important Safety Information Part Number Country (Feature Code) Ethiopia Italy 14F0069 (F/C 6858) Israel 14F0087 (F/C 6860) Switzerland Liechtenstein 14F0051 (F/C 6859) Namibia Swaziland 14F0015 (F/C 6861) Pakistan Zimbabwe South Africa Liberia 1838574 (F/C 6853) Asia Pacific Australia New Zealand 13F9940 (F/C 6854) Brunei Malaysia...
  • Page 42 A: S PPENDIX AFETY NFORMATION DANGER: Ein- und Ausbau des Gerätes ist nur von Fachpersonal vorzunehmen. Gevaar! De eenheid mag alleen worden geïnstalleerd of verwijderd doorbevoegde personen. Perigo: A instalação e remoção da unidade deve ser feita apenas porpessoal especializado. Fare! Installation og afmontering af enheden skal udføres afuddannet personale.
  • Page 43 Important Safety Information Монтаж и демонтаж оборудования должен выполнять только квалифицированный персонал.
  • Page 44 A: S PPENDIX AFETY NFORMATION DANGER: It is essential that the mains socket outlet is installed near to the unit and is accessible. You can only disconnect the unit by removing the appliance coupler from the unit. DANGER: C'est essentiel que le socle soit installé près de l'unité et soit accessible.
  • Page 45 Important Safety Information Perigo: É essencial que a tomada eléctrica seja instalada próximo da unidade e que seja facilmente acessível. Só é possível desligar totalmente a alimentação, retirando a ficha de ligação da unidade. Peligro: Es muy importante que la toma de alimentación del zócalo esté instalada cerca de la unidad y que sea accesible.
  • Page 46 A: S PPENDIX AFETY NFORMATION Очень важно, чтобы электрическая розетка находилась рядом с блоком, и чтобы она ничем не была загорожена. Блок можно отсоединить, только отсоединив от него шнур питания. Zelo pomembno je, da je glavna vtiènica blizu naprave in da je dostopna.Napravo je možno izkljuèiti samo tako, da potegnete prikljuèni vtiè...
  • Page 47 Important Safety Information Perigo: Esta unidade funciona sob condições SELV (Safety Extra Low Voltage) de acordo com IEC 950 mas, essa situação é mantida apenas se oequipamento ao qual ela est conectada também funcionar sob a condição SELV. Fare! Denne enhed fungerer ved svagstrøm i henhold til betingelsernei IEC 950.
  • Page 48 A: S PPENDIX AFETY NFORMATION om utrustning till vilken enheten ansluts också arbetar med skyddsklenspänning. Это устройство работает по стандарту IEC 950 в условиях Безопасно низкого напряжения (SELV) только при условии, что все оборудование в цепи отвечает стандартам SELV.
  • Page 49 Important Safety Information DANGER: Ensure that the power supply lead is disconnected before removing the cover of the unit. DANGER: Assurer que l'entrée de la source d'alimentation soit débranchée avant d'ouvrir le couvercle de fusible du connecteur IEC ou d'enlever le couvercle de l'unité. DANGER: Vorm Öffnen der Abdeckungsklappe der IEC Steckverbindungssicherung oder vorm Abnehmen der Gesamtabdeckung der Gerät sicherstellen, daß...
  • Page 50 A: S PPENDIX AFETY NFORMATION Varra: Varmista, että olet irrottanut verkkojohdon, ennen kuin avaat IEC-liittimen sulakekotelon kannen tai irrotat yksikön kannen. Pericolo: Prima di aprire il coperchio del fusibile del connettore IEC oppure prima di rimuovere il coperchio dell’unità, accertarsi che il cavo dell’alimentatore sia scollegato.
  • Page 51 Important Safety Information Перед тем, как открывать крышку предохранителя разъема IEC или снимать крышку блока, убедитесь, что подводящий электропровод отсоединен от сети. Preden odprete pokrov za varovalko na IEC vtièu ali odprete pokrov naprave, morate izkljuèiti elektrièno napajanje. DANGER: The sockets for a Redundant Power System are designed to only be used with a recommended RPS.
  • Page 52 A: S PPENDIX AFETY NFORMATION Perigo: Esses soquetes foram projetados paraserem utilizados apenas com uma Fonte de Alimentação Redundante recomendada. Fare! Disse sokler må kun bruges sammen med enanbefalet RPS (Redundant Power Supply). Gevaar: Deze aansluitingen mogen alleenmet een aanbevolen reservevoeding worden gebruikt.
  • Page 53 Important Safety Information Опасно: Эти гнезда предназначены для использования только с рекомендованным дополнительным источником питания. Nevarnost ! Te vtiènice so namenjene samo za uporabo s priporoèenim redundantnim napajalnikom DANGER: The RJ45 ports are shielded RJ45 data sockets. They cannot be used as telephone sockets.
  • Page 54 A: S PPENDIX AFETY NFORMATION sockets. Either shielded or unshielded data cables with shielded or unshielded jacks can be connected to these data sockets. DANGER: Ceux-ci sont les prises de courant de données RJ45 protégées. Ils ne peuvent pas être utilisés comme prises de courant téléphoniques. Brancher seulement les connecteurs RJ45 de données à...
  • Page 55 Important Safety Information taisuojaamattomia datakaapeleita, joissa on suojattu tai suojaamatonpistoke. Pericolo: Le porte RJ45 sono schermate e riservate alla trasmissione di dati; esse non possono essere utilizzate come prese telefoniche. Collegare a queste porte soltanto connettoriper dati RJ45. A queste porte possono essere collegati sia cavischermati che non schermati dotati di connettori schermati onon schermati.
  • Page 56 A: S PPENDIX AFETY NFORMATION...
  • Page 57 Important Safety Information Опасно: Порты RJ45 представляют собой экранированные сигнальные гнезда RJ45. Их нельзя использовать в качестве телефонных гнезд. К этим гнездам можно подсоединять только сигнальные разъемы RJ45. К этим сигнальным гнездам разрешается подсоединять экранированные или неэкранированные сигнальные кабели с экранированными или неэкранированными разъемами.
  • Page 58 A: S PPENDIX AFETY NFORMATION DANGER: Cette unité ne peut pas être mise en marche des sources de courant IT (Impédance à la terre). Si vos sources de courant sont de type IT, cette unité doit être alimentée par 230V (2P+T) via un rapport de transformation d'isolation de 1:1, avec un point de connexion secondaire étiqueté...
  • Page 59 Important Safety Information...
  • Page 60 A: S PPENDIX AFETY NFORMATION...

  • Page 61: Pin - Outs

    OUTS Null Modem Cable 9-pin to RS-232 25-pin PC-AT Serial Cable 9-pin to 9-pin...

  • Page 62: Modem Cable

    B: P PPENDIX OUTS Modem Cable 9-pin to RS-232 25-pin RJ45 Pin Pin assignments are identical for 10BASE-T and 100BASE-TX RJ45 Assignments connectors Table 4 Pin assignments Pin Number Signal Function Ports configured as MDI TxData + Transmit data TxData – Transmit data RxData + Receive Data...
  • Page 63 RJ45 Pin Assignments Table 4 Pin assignments Pin Number Signal Function Ports configured as MDIX RxData + Receive Data RxData – Receive Data TxData + Transmit data Not assigned Not assigned TxData – Transmit data Not assigned Not assigned...
  • Page 64 B: P PPENDIX OUTS...

  • Page 65: Witch Echnical Specifications

    WITCH ECHNICAL PECIFICATIONS Physical Dimensions Height: 76mm (3.0 in.) x Width: 483mm (19.0 in.) x Depth 300mm (12.0 in.) Weight: 4kg (8.8lbs) Environmental Requirements Operating Temperature 0° to 50°C (32° to 122°F) Storage Temperature –10° to +70°C (14° to 158°F) Operating Humidity 10 –...
  • Page 66 C: S PPENDIX WITCH ECHNICAL PECIFICATIONS Standards Supported SNMP Terminal Emulation SNMP protocol (RFC 1157) Telnet (RFC 854) MIB-II (RFC 1213) Protocols Used for Administration Bridge MIB (RFC 1493) UDP (RFC 768) Repeater MIB (RFC 1516) IP (RFC 791) VLAN MIB (RFC 1573) ICMP (RFC 792) RMON MIB (RFC 1271) TCP (RFC 793)

  • Page 67: Upport And Service

    ERVICE This appendix provides contacts for help if you have questions about the IBM 8271 Nways Ethernet LAN Switch products or if the IBM 8271 Nways Ethernet LAN Switch products are not working correctly. It also explains how to access the IBM electronic sites to obtain the latest versions of microcode and release notes.
  • Page 68 D: T PPENDIX ECHNICAL UPPORT AND ERVICE...

  • Page 69: Trademarks

    ARRANTIES References in this publication to IBM products, programs, or services do not imply that IBM intends to make these available in all countries in which IBM operates. Any reference to an IBM product, program, or service is not intended to state or imply that only IBM’s product, program, or service may be used.

  • Page 70: Statement Of Limited Warranty

    Regardless of the Machine's production status, IBM's warranty terms apply. The IBM Warranty for IBM warrants that each Machine 1) is free from defects in materials and Machines workmanship and 2) conforms to IBM's Official Published Specifications. The warranty period for a Machine is a specified, fixed period commencing on its Date of Installation.

  • Page 71: Warranty Service

    IBM or your reseller will repair or replace it with one that is at least functionally equivalent, without charge. The replacement may not be new, but it will be in good working order. If IBM or your reseller is unable to repair or replace the Machine, you may return it to your place of purchase and your money will be refunded.

  • Page 72: Extent Of Warranty

    IBM or your reseller of changes in a Machine's location. IBM is responsible for loss of, or damage to, a Machine while it is 1) in IBM’s possession or 2) in transit in those cases where IBM is responsible for the transportation charges.

  • Page 73: Electronic Emission Notices For Shielded Twisted Pair (Stp) Cable

    Properly shielded and grounded cables and connectors must be used in order to meet FCC emission limits. IBM is not responsible for any radio or television interference caused by using other than recommended cables...

  • Page 74: Canadian Department Of Communications (Doc) Compliance Statement

    This product is in conformity with the protection requirements of EU (CE) Mark of Council Directive 89/336/EEC on the approximation of the laws of the Conformity Member States relating to electromagnetic compatibility. IBM cannot Statement for accept responsibility for any failure to satisfy the protection requirements Shielded Cable resulting from a non-recommended modification of the product, including the fitting of non-IBM option cards.

  • Page 75: Cispr22 Compliance Statement For Shielded Cable

    ßern. Anmerkung: Um die Einhaltung des EMVG sicherzusellen sind die Geräte, wie in den IBM Handüchern angegeben, zu installieren und zu betreiben. CISPR22 Compliance This product has been tested and found to comply with the limits for Statement for...

  • Page 76: Taiwanese Class A Warning Statement

    E: N PPENDIX OTICES RADEMARKS ARRANTIES Taiwanese Class A Warning Statement Please note that this device has been approved for business purpose with Korean Communications regard to electromagnetic interference. If you find this is not suitable for Statement your use, you may exchange it for a non-business purpose one. Electronic Emission Notices for Unshielded Twisted...

  • Page 77: Canadian Department Of Communications (Doc) Compliance Statement

    Electronic Emission Notices for Unshielded Twisted Pair (UTP) Cable IBM is not responsible for any radio or television interference caused by unauthorized changes or modifications to this equipment. Unauthorized changes or modifications could void the user's authority to operate the equipment.

  • Page 78: Japanese Voluntary Control Council For Interference (Vcci) Statement Class A For Unshielded Cables

    OTICES RADEMARKS ARRANTIES Verantworlich für die Konformitätserklärung nach Paragraph 5 des EMVG ist die IBM Corporation. Deutschland Informationssysteme GmbH, 70547 Stuttgart. Informationen in Hinsicht EMVG Paragraph 3 Abs. (2) 2: Das Gerät erfüllt die Schutzanforderungen nach EN.50082-1 und EN 55022 Klasse A.

  • Page 79: Taiwanese Class A Warning Statement

    Electronic Emission Notices for Unshielded Twisted Pair (UTP) Cable Taiwanese Class A Warning Statement Please note that this device has been approved for business purpose with Korean Communications regard to electromagnetic interference. If you find this is not suitable for Statement your use, you may exchange it for a non-business purpose one.
  • Page 80 E: N PPENDIX OTICES RADEMARKS ARRANTIES...
  • Page 81 LOSSARY 10BASE-T The IEEE specification for 10 Mbps Ethernet over Category 3, 4 or 5 twisted pair cable. 100BASE-FX The IEEE specification for 100 Mbps Fast Ethernet over fiber-optic cable. The IEEE specification for 100 Mbps Fast Ethernet over Category 5 100BASE-TX twisted-pair cable.
  • Page 82 LOSSARY broadcast storm Multiple simultaneous broadcasts that typically absorb all the available network bandwidth and can cause a network to fail. Broadcast storms can be due to faulty network devices. collision A term used to describe two colliding packets in an Ethernet network. Collisions are a part of normal Ethernet operation, but a sudden prolonged increase in the number of collisions can indicate a problem with a device, particularly if it is not accompanied by a general increase...
  • Page 83 LOSSARY A device that regenerates LAN traffic so that the transmission distance of that signal can be extended. Hubs are similar to repeaters, in that they connect LANs of the same type; however they connect more LANs than a repeater and are generally more sophisticated. IEEE Institute of Electrical and Electronics Engineers.
  • Page 84 LOSSARY MAC address Media Access Control address; also called hardware or physical address. A layer 2 address associated with a particular network device. Most devices that connect to a LAN have a MAC address assigned to them as they are used to identify other devices in a network. MAC addresses are 6 bytes long.
  • Page 85 LOSSARY SNMP Simple Network Management Protocol. The current IETF standard protocol for managing devices on an TCP/IP network. stack A group of network devices that are integrated to form a single logical device. switch A device that interconnects several LANs to form a single logical LAN that comprises of several LAN segments.
  • Page 86 LOSSARY...
  • Page 87 INDEX INDEX Numbers LEDs 19 10BASE-T/100BASE-TX ports 19 Light Emitting Diodes. See LEDs auto-negotiating ports 19 management software 38 managing the Switch 38 Matrix Cable 22 cable Matrix Module 22 choosing the correct 36 Matrix Module slot 21 Matrix 22 matrix port 22 maximum length 19, 27 MDI configuration 36...
  • Page 88 21 weight 65 system specifications 65 Technical support and service 67 topology rules for Fast Ethernet 26 topology rules with full duplex 27 unit information label 21 Voice support 67 World Wide Web (WWW) IBM Networking home page 67...

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