ABOUT T HIS G UIDEDownload the LatestSoftware andDocumentation forYour 3Com SwitchThank you for purchasing a 3Com Switch 4210. As part of our commitment tobringing you the most capable and dependable network equipment, 3Com offersfree software maintenance updates and documentation updates on our website.To obtain the most up-to-date operating software and user documentation for theSwitch 4210, point your web browser to: www.3Com.com/4210 and select the“Support and Registration” link.You must register your 3Com switch before receiving software upgrades. Toregister, point your web browser to eSupport.3Com.com.Before You Start The guide is intended for use by network administrators who install and set upnetwork equipment; consequently, it assumes a basic working knowledge of LANs(Local Area Networks).Release Notes The Release Notes provide important information about the current softwarerelease, including new features, modifications, and known problems. You shouldread the Release Notes before installing the switch in your network.If the information in the Release Notes differs from this guide, follow theinstructions in the Release Notes.User guides and release notes are available in Adobe Acrobat Reader PortableDocument Format (PDF) on the 3Com World Wide Web site athttp://www.3com.comConventions Table 1 lists important conventions that are used throughout this guide.Table 1 Notice IconsIcon Notice Type DescriptionInformation note Information that describes important features orinstructionsCaution Information that alerts you to potential loss of data orpotential damage to an application, system, or deviceWarning Information that alerts you to potential personal injury