User Manual

Solution:
Ensurethat:
–Thecableisinstalledcorrectly.
ThenetworkcablemustbesecurelyconnectedbothtotheEthernetconnectorofyourcomputerand
totheRJ45connectorofthehub.Themaximumallowabledistancefromthecomputertohubis100
m(328ft).Ifthecableisconnectedandthedistanceiswithintheacceptablelimitsbuttheproblem
persists,tryadifferentcable.
–Youareusingthecorrectdevicedriver.Toinstallthecorrectdriver,dothefollowing:
1.GotoControlPanel,andensurethatyouviewControlPanelbyCategory.
2.ClickHardwareandSound➙DeviceManager.Ifyouarepromptedforanadministrator
passwordorconfirmation,typethepasswordorprovideconfirmation.
3.Double-clickNetworkadapterstoviewallnetworkadapters.Ifanexclamationmark!is
displayednexttotheadaptername,youmightnotbeusingthecorrectdriverorthedrivermight
havebeendisabled.
4.Right-clickthehighlightedadapter,clickUpdateDriverSoftware,andthenfollowtheinstructions
onthescreentoupdatethedriver.
–Theswitchportandtheadapterhavethesameduplexsetting.
Ifyouconfiguredtheadapterforfullduplex,ensurethattheswitchportalsoisconfiguredforfullduplex.
Settingawrongduplexmodecandegradeperformance,causedataloss,orresultinlostconnections.
–Youhaveinstalledallnetworkingsoftwarethatisnecessaryforyournetworkenvironment.
CheckwithyourLANadministratorforthenecessarynetworkingsoftware.
•Problem:Theadapterstopsworkingfornoapparentreason.
Solution:Thenetworkdriverfilesmightbecorruptormissing.
•Problem:MycomputerisaGigabitEthernetmodelandIuseaspeedof1000Mbps,theconnectionfails
orerrorsoccur.
Solution:
–UseCategory5wiringandensurethatthenetworkcableissecurelyconnected.
–Connecttoa1000BASE-Thub/switch(not1000BASE-X).
•Problem:TheWakeonLANfeatureisnotworking.
Solution:EnsurethatWakeonLANisenabledinThinkPadSetup.Ifitis,checkwithyourLAN
administratorforthenecessarysettings.
•Problem:MycomputerisaGigabitEthernetmodel,butitcannotconnecttothenetworkat1000Mbps.
Instead,itconnectsat100Mbps.
Solution:
–TryanotherEthernetcable.
–Ensurethatthelinkpartnerissettoauto-negotiate.
–Ensurethattheswitchis802.3ab-compliant(gigabitovercopper).
Wireless-LANproblem
Problem:Icannotconnecttothenetworkusingthebuilt-inwirelessnetworkcard.
Solution:
Ensurethat:
Chapter7.Troubleshootingcomputerproblems91