User Guide

60 Chapter 4 Problem, Meet Solution
Network Connections
MakesuretheEthernetcableispluggedintoyourMacBookandintothenetwork.
CheckthecablesandpowersuppliestoyourEthernethubsandrouters.
IfyouhavetwoormorecomputerssharinganInternetconnection,besurethatyour
networkissetupproperly.YouneedtoknowifyourISPprovidesonlyoneIPaddress
orifitprovidesmultipleIPaddresses,oneforeachcomputer.
IfonlyoneIPaddressisprovided,thenyoumusthavearoutercapableofsharing
theconnection,alsoknownasnetworkaddresstranslation(NAT)or“IPmasquerading.”
Forsetupinformation,checkthedocumentationprovidedwithyourrouterorask
thepersonwhosetupyournetwork.YoucanuseanAirPortbasestationtoshare
oneIPaddressamongmultiplecomputers.ForinformationaboutusinganAirPort
basestation,checkMacHelporvisittheAppleAirPortwebsiteat
www.apple.com/support/airport.
Ifyoucan’tresolvetheissueusingthesesteps,contactyourISPornetworkadministrator.
Problems with AirPort Extreme Wireless Communication
If you have trouble using AirPort Extreme wireless communication:
Â Makesurethecomputerornetworkyouaretryingtoconnecttoisrunningandhasa
wirelessaccesspoint.
Â Makesureyouhaveproperlyconguredthesoftwareaccordingtotheinstructions
thatcamewithyourbasestationoraccesspoint.