Chapter7Maintenance
Note
Beforetheswitchisrebooted,recordthecurrentcongurationforreconguration.
7.3.7TwoDevicesintheSameVLANCannotCommunicate
Symptom
TwodevicesconnectedtotwoportsinthesameoneVLANoftheswitchcannot
communicate.
FaultAnalysis
1.TheportPVIDisincorrect.
2.Theportsaredisabled.
3.TheVLANboundtotheportsisdisabled.
4.WhentheportswereaddedintheVLAN,tagwasselected.
5.IPaddressesofthedeviceswerenotsetornotinthesamenetworksegment.
Solution
1.SettheportPVIDtobethesameastheVLANIDtowhichtheportsbelong.
2.Enablealltheportsused.
3.EnabletheVLANused.
4.AddtheportsintheVLANagain,andselectuntag.
5.SetcorrectIPaddressesforthedevices.
7.3.8AuthenticationTimedOutinCampusNetwork
Symptom
ThereweresixbuildingsinthestudentdormitoryofschoolA.Ifstudentswantedtoaccess
theInternet,theircomputersmustpasstheauthenticationandaccountingsystem.The
RadiusserversoftwareandBrashardwaredevicesoftheauthenticationandaccounting
systemwereprovidedbycompanyB.TheDOT1Xportauthenticationfunctionmustbe
enabledontheaccesslayerdeviceZXR102900Eanditworkswiththeauthentication
andaccountingsystemofcompanyBtoprovideauthenticationandaccountingservices
forthestudents.
CompanyBcompletedthedebuggingoftheRadiusserverandBrasdevicesand
allocatedtheauthenticationandaccountingclientstoeachbuildingforinstallation.Most
studentsregisteredandactivatedtheiraccounts.Afterthepreparationwascompleted,
ZTE’smaintenanceengineersenabledtheDOT1Xfunctionontheaccesslayerdevices
ofthesixbuildings,asrequiredbythecustomer.ThecongurationoftheZXR102900E
wasasfollows:
TwodevicesconnectedtotwoportsinthesameVLANcannotpingeachother.
setport1-24securityenable
7-7
SJ-20130731155059-002|2013-11-27(R1.0)ZTEProprietaryandCondential