Lenovo x3250 m6 - Solving Ethernet Controller Problems; Solving Undetermined Problems

SolvingEthernetcontrollerproblems
ThemethodthatyouusetotesttheEthernetcontrollerdependsonwhichoperatingsystemyouare
using.ForinformationaboutEthernetcontrollers,seetheEthernetcontrollerdevice-driverreadmefileand
theoperating-systemdocumentation.
Trythefollowingprocedures:
Step1.Makesurethatthecorrectdevicedrivers,whichcomewiththeserver,areinstalledandthat
theyareatthelatestlevel.
Step2.MakesurethattheEthernetcableisinstalledcorrectly.
•Thecablemustbesecurelyattachedatallconnections.Ifthecableisattachedbuttheproblem
remains,tryadifferentcable.
•IfyousettheEthernetcontrollertooperateat100Mbps,youmustuseCategory5cabling.
•Ifyoudirectlyconnecttwoservers(withoutahub),orifyouarenotusingahubwithXports,
useacrossovercable.TodeterminewhetherahubhasanXport,checktheportlabel.Ifthe
labelcontainsanX,thehubhasanXport.
Step3.Determinewhetherthehubsupportsauto-negotiation.Ifitdoesnot,tryconfiguringtheintegrated
Ethernetcontrollermanuallytomatchthespeedandduplexmodeofthehub.
Step4.ChecktheEthernetcontrollerLEDsontherearpaneloftheserver.TheseLEDsindicatewhether
thereisaproblemwiththeconnector,cable,orhub.
•TheEthernetlinkstatusLEDislitwhentheEthernetcontrollerreceivesalinkpulsefromthehub.
IftheLEDisoff,theremightbeadefectiveconnectororcableoraproblemwiththehub.
•TheEthernettransmit/receiveactivityLEDislitwhentheEthernetcontrollersendsorreceives
dataovertheEthernetnetwork.IftheEthernettransmit/receiveactivityLEDisoff,makesure
thatthehubandnetworkareoperatingandthatthecorrectdevicedriversareinstalled.
Step5.ChecktheLANactivityLEDontherearoftheserver.TheLANactivityLEDislitwhendataisactive
ontheEthernetnetwork.IftheLANactivityLEDisoff,makesurethatthehubandnetworkare
operatingandthatthecorrectdevicedriversareinstalled.
Step6.Checkforoperating-system-specificcausesoftheproblem.
Step7.Makesurethatthedevicedriversontheclientandserverareusingthesameprotocol.
IftheEthernetcontrollerstillcannotconnecttothenetworkbutthehardwareappearstobeworking,the
networkadministratormustinvestigateotherpossiblecausesoftheerror.
Solvingundeterminedproblems
IfDynamicSystemAnalysis(DSA)cannotdiagnosethefailureoriftheserverisinoperative,usethe
informationinthissectiontosolvetheundeterminedproblems.
Ifyoususpectthatasoftwareproblemiscausingfailures(continuousorintermittent),see“Software
problems”onpage71.
CorrupteddatainCMOSmemoryorcorruptedUEFIfirmwarecancauseundeterminedproblems.Toreset
theCMOSdata,usetheCMOSclearjumper(JP1)tocleartheCMOSmemoryandoverridethepower-on
password.See“System-boardconnectors”onpage21
formoreinformation.IfyoususpectthattheUEFI
firmwareiscorrupted,see“Recoveringtheserverfirmware(UEFIupdatefailure)”onpage74.
Ifthepowersuppliesareworkingproperly,dothefollowing:
72LenovoSystemx3250M6InstallationandServiceGuide