Chapter12
ClusterManagement
Configuration
TableofContents
ClusterManagementOverview..........................................121
ConguringClusterManagement.......................................123
ClusterManagementCongurationExample........................126
ClusterManagementMaintenanceandDiagnosis.................126
ClusterManagement
Overview
Clusterisacombinationofagroupofswitchesinaspecicbroad-
castdomain.Thisgroupofswitchesformsauniedmanagement
domainwhichprovidesapublicnetworkIPaddressandaman-
agementinterfacetotheoutsideandprovidesthefunctionsof
managingandaccessingeverymemberinthecluster .
ManagementswitchisconguredwithpublicnetworkIPaddress
asacommandswitchandothermanagedswitchessuchasmem-
berswitches.PublicnetworkIPaddressisnotconguredforthe
memberswitchbutaprivateaddressisassignedtothemember
switchwithsimilarDHCPfunctionofthecommandswitch.Com-
mandswitchandmemberswitchformacluster(privatenetwork).
Itisrecommendedtoisolatethebroadcastdomainofthepublic
networkandthatoftheprivatenetworkonthecommandswitch,
andshieldthedirectaccesstotheprivateaddress.Thecommand
switchprovidesamanagementandmaintenancechanneltothe
outsidetomanagetheclusterinacentralizedanduniedmanner .
Abroadcastdomainiscomposedoffourkindsofswitches:
�Commandswitch
�Memberswitch
�Candidateswitch
�Independentswitch
Thereisonlyonecommandswitchinacluster .Commandswitch
cancollectequipmenttopologyandestablishaclusterautomati-
cally.Aftertheclusterisestablished,commandswitchprovidesa
managementchannelforclustertomanagememberswitch.Mem-
CondentialandProprietaryInformationofZTECORPORATION121