3Com 3C16987 manual Rack-mounting

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24CHAPTER 2: INSTALLING THE SWITCH

Choosing a Suitable The Switch is suited for use in an office environment where it can be

Sitemounted in a standard 19-inch equipment rack, or free standing. Alternatively, the Switch can be rack-mounted in a wiring closet or equipment room. A rack-mounting kit, containing two mounting brackets and four screws, is supplied with the Switch.

When deciding where to position the Switch, ensure that:

You are able to meet the configuration rules detailed in “Configuration Rules for Fast Ethernet” on page 20.

The Switch is accessible and cables can be connected easily.

Cabling is away from:

Sources of electrical noise such as radios, transmitters and broadband amplifiers

Power lines and fluorescent lighting fixtures

Water or moisture cannot enter the case of the Switch.

Air-flow is not restricted around the Switch or through the vents in the side of the Switch. We recommend that you provide a minimum of 25mm (1in.) clearance.

No more than four Switch units are placed on top of one another, if the units are free standing.

If used in an office environment, the switch is positioned so that any noise from the fan is not disruptive.

Rack-mounting

The Switch is 1U high and fits in most standard 19-inch racks.

CAUTION: Disconnect all cables from the Switch before continuing. Remove all self adhesive pads from the underside of the Switch if they have been fitted.

1Place the Switch the right way up on a hard flat surface, with the front facing towards you.

2Locate a mounting bracket over the mounting holes on one side of the Switch, as shown in Figure 7.

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Contents User Guide 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Contents PIN-OUTS Support from 3Com Returning Products for Repair Page About this Guide Conventions Icon DescriptionConvention Description Related DocumentationYear ComplianceComments ProductIntroducing the Switch 3300 SM About SuperStack Switch 3300 SM Summary of FeaturesSwitch 3300 SM Front View Detail 10BASE-T / 100BASE-TX PortsPower/Self Test LED Color Indicates Port Status LEDsUnit LEDs Switch 3300 SM Rear View Detail Power SocketUnits on Configuration Switch 3300 SM as aNetwork ExamplesSwitch Using the Switch as a collapsed backboneSwitch Fast Ethernet configuration rules Configuration Rules with Full Duplex Configuration Rules for Gigabit Ethernet Installing the Switch Rack-mounting Repeat steps 2 and 3 for the other side of the Switch Fitting a bracket for rack mountingStacking Units Treated as a single manageable unit with one IP address3C16965. Contact your supplier for details You need only one SuperStack II Switch 3300 MM per stack Stack of three units Power-up Powered-up and ready for operationSwitch 3300 SM SequenceChoosing Correct CablesPort, you need a cross-overcable. Most of the 10BASE-T Color StateProblem Switch Network. For information on managing the Switch usingManaging GuideSafety Information Important Safety InformationPersonnel only Important Safety Information ’information de Sécurité ImportantePersonnel qualifié Plus étroites’information de Sécurité Importante Wichtige Sicherheitsinformat ionen Warnhinweis Faseroptikanschlüsse Optische Sicherheit Appendix a Safety Information PIN-OUTS Null Modem CablePC-AT Serial Cable Pin to RS-232 25-pinConnectors Pin Number Signal FunctionModem Cable RJ45 PinPin Number Signal Function Appendix B PIN-OUTS Technical Specifications Vlan MIB RFC Services ServicesTechnical Support Online TechnicalUsername anonymous 408 727Europe, South Africa, and Middle East Country Telephone Number Asia, Pacific RimCountry Telephone Number Fax Number Glossary Broadcast CollisionEndstation EthernetLine speed See baud Loop MulticastProtocol RepeaterSTP See Spanning Tree Protocol STP Glossary Index Index 3Com Corporation Limited Warranty Included Services Limitation of Liability EMC Statements