3Com DUA1698 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 SuperStack 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Contents PIN-OUTS Page Page About this Guide Conventions Icon DescriptionConvention Description Related DocumentationYear ComplianceComments ProductIntroducing the Switch 3300 XM About SuperStack Switch 3300 XM Summary of FeaturesSwitch 3300 XM Front View Detail Switch 3300 XM front viewPower/Self Test LED Color Indicates Port Status LEDsUnit LEDs Switch 3300 XM Rear View Detail Power SocketUnits on Configuration Segmentation SwitchNetwork ExamplesSwitch Using the Switch as a collapsed backboneSwitch Fast Ethernet configuration rules Configuration Rules with Full Duplex Introducing the Switch 3300 XM Installing the Switch Rack-mounting Repeat steps 2 and 3 for the other side of the Switch Stacking Units 3C16965. Contact your supplier for detailsYou need only one SuperStack 3 Switch 3300 MM per stack Stack of three units Power-up Powered-up and ready for operationSwitch 3300 XM SequenceChoosing Correct CablesColor State Problem Switch ManagingSafety Information Important Safety InformationPersonnel only Important Safety Information ’information de Sécurité Importante’information de Sécurité Importante Wichtige Sicherheitsinformat ionen PIN-OUTS PC-AT Serial CablePin Number Signal Function Modem CableRJ45 Pin AssignmentsPin Number Signal Function Appendix B PIN-OUTS Physical Dimensions SafetyPower Supply Environmental RequirementsVlan MIB RFC Services Online TechnicalUsername anonymous Europe, South Africa, and Middle East Country Telephone Number Asia, Pacific RimCountry Telephone Number Fax Number Glossary Bridge BroadcastCollision EndstationPage Line speed LoopMulticast ProtocolServer StackSuperStack TelnetGlossary Index Index 3Com Corporation Limited Warranty Page Disclaimer Regulatory Notices