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    							Table 3: Cisco ISE Nodes and Available Menu Options
    Available Menu OptionsCisco ISE Node
    •ViewandconfiguresystemtimeandNTPserver
    settings.
    •Installservercertificate,managecertificate
    signingrequest.
    Theservercertificateoperationsmust
    beperformeddirectlyoneach
    individualnode.Theprivatekeysare
    notstoredinthelocaldatabaseandare
    notcopiedfromtherelevantnode;the
    privatekeysarestoredinthelocalfile
    system.
    Note
    AllNodes
    Allmenusandsub-menus.PrimaryPAN
    •Homeandoperationsmenus.
    •Providesredundantaccesstomonitoringdata
    thatcanbeaccessedfromboththePrimaryand
    theActiveMonitoringnodes.
    ActiveMonitoringNode
    Optiontojoin,leave,andtestActiveDirectory
    connection.EachPolicyServicenodemustbe
    separatelyjoinedtotheActiveDirectorydomain.
    Youmustfirstdefinethedomaininformationand
    jointhePANtotheActiveDirectorydomain.Then,
    jointheotherPolicyServicenodestotheActive
    Directorydomainindividually.
    PolicyServiceNodes
    OptiontopromotetheSecondaryPANtobecomethe
    PrimaryPAN.
    Afteryouhaveregisteredthesecondary
    nodestothePrimaryPAN,whileloggingin
    totheAdminportalofanyofthesecondary
    nodes,youmustusethelogincredentialsof
    thePrimaryPAN.
    Note
    SecondaryPAN
    Configure a Cisco ISE Node
    AfteryouinstallaCiscoISEnode,allthedefaultservicesprovidedbytheAdministration,PolicyService,
    andMonitoringpersonasrunonit.Thisnodewillbeinastandalonestate.YoumustlogintotheAdmin
    portaloftheCiscoISEnodetoconfigureit.YoucannoteditthepersonasorservicesofastandaloneCisco
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    Configure a Cisco ISE Node 
    						
    							ISEnode.Youcan,however,editthepersonasandservicesoftheprimaryandsecondaryCiscoISEnodes.
    YoumustfirstconfigureaprimaryISEnodeandthenregistersecondaryISEnodestotheprimaryISEnode.
    Ifyouareloggingintothenodeforthefirsttime,youmustchangethedefaultadministratorpasswordand
    installavalidlicense.
    ItisrecommendednottochangethehostnameandthedomainnameonCiscoISEthathavebeenconfigured
    orinproduction.Ifitisrequired,thenreimagetheappliance,makechanges,andconfigurethedetailsduring
    theinitialdeployment.
    Before You Begin
    YoushouldhaveabasicunderstandingofhowdistributeddeploymentsaresetupinCiscoISE.Readthe
    guidelinesforsettingupadistributeddeployment.
    Procedure
    Step 1ChooseAdministration>System>Deployment.
    Step 2CheckthecheckboxnexttotheCiscoISEnodethatyouwanttoconfigure,andclickEdit.
    Step 3EnterthevaluesasrequiredandclickSave.
    Configure a Primary PAN
    Tosetupadistributeddeployment,youmustfirstconfigureaCiscoISEnodeasyourPrimaryPAN.
    Procedure
    Step 1ChooseAdministration>System>Deployment.
    TheRegisterbuttonwillbedisabledinitially.Toenablethisbutton,youmustconfigureaPrimaryPAN.
    Step 2Checkthecheckboxnexttothecurrentnode,andclickEdit.
    Step 3ClickMakePrimarytoconfigureyourPrimaryPAN.
    Step 4EnterdataontheGeneralSettingstab.
    Step 5ClickSavetosavethenodeconfiguration.
    What to Do Next
    1Addsecondarynodestoyourdeployment.
    2Enabletheprofilerserviceandconfiguretheprobes,ifrequired.
    Register a Secondary Cisco ISE Node
    Afteryouregisterthesecondarynode,theconfigurationofthesecondarynodeisaddedtothedatabaseofthe
    primarynodeandtheapplicationserveronthesecondarynodeisrestarted.Aftertherestartiscomplete,the
    secondarynodewillberunningthepersonasandservicesthatyouhaveenabledonit.Youcanviewallthe
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    Configure a Cisco ISE Node 
    						
    							configurationchangesthatyoumakefromtheDeploymentpageofthePrimaryPAN.However,expecta
    delayof5minutesforyourchangestotakeeffectandappearontheDeploymentpage.
    Before You Begin
    Ensurethattheprimarynode’strustedcertificatestorehastheappropriatecertificateauthority(CA)certificates
    tovalidatetheHTTPScertificateofthesecondarynodethatyouaregoingtoregister.Whenyouimportthe
    secondarynode'scertificateintothetrustedcertificatestore,checktheTrustforauthenticationwithinISE
    checkboxforthePrimaryPANtovalidatethesecondarynode'scertificate.
    Afteryouregisterthesecondarynodetotheprimarynode,ifyouchangetheHTTPScertificateonthesecondary
    node,youmustimporttheappropriateCAcertificatesintothetrustedcertificatestoreoftheprimarynode.
    ThecertificatesthatyouimportintothetrustedcertificatestoreofthePrimaryPANarereplicatedtothe
    secondarynodes.
    Werecommendthatyoudecideonthetypeofnode(CiscoISEorInlinePosture)atthetimeofregistration.
    Ifyouwanttochangethenodetypelater,youhavetoderegisterthenodefromthedeployment,restartCisco
    ISEonthestandalonenode,andthenreregisterit.
    IfyouplantodeploytwoAdministrationnodesforhighavailability,registertheSecondaryPANbeforeyou
    registertheothersecondarynodes.Ifyouregisterthenodesinthissequence,youdonothavetorestartthe
    secondaryISEnodesafteryoupromotetheSecondaryPANasyourprimary.
    IfyouplantodeploymultiplePolicyServicenodesrunningSessionserviceswithmutualfailoveramong
    thesenodes,placethePolicyServicenodesinanodegroup.Youmustcreatethenodegroupbeforeyou
    registerthenodes.
    Procedure
    Step 1LogintothePrimaryPAN.
    Step 2ChooseAdministration>System>Deployment.
    Step 3ChooseRegister>RegisteranCiscoISENodetoregisterasecondarynode.
    Step 4EnteraDNS-resolvablehostnameorIPaddressofthesecondarynode.
    IfyouareusingthehostnamewhileregisteringtheCiscoISEnode,thefullyqualifieddomainname(FQDN)
    ofthestandalonenodethatyouaregoingtoregister,forexample,abc.xyz.com,mustbeDNS-resolvablefrom
    thePrimaryPAN.Otherwise,noderegistrationfails.YoumusthavepreviouslydefinedtheIPaddressand
    theFQDNofthesecondarynodeintheDNSserver.
    Step 5EnteraUI-basedadministratorcredentialforthesecondarynodeintheUsernameandPasswordfields.
    Step 6ClickNext.
    CiscoISEcontactsthesecondarynode,obtainssomebasicinformationsuchasthehostname,defaultgateway,
    andsoon,anddisplaysit.
    Ifyouhavechosentoregisterasecondarynode,youcanedittheconfigurationofthesecondarynode.
    IfyouhavechosentoregisterasecondaryInlinePosturenode,noadditionalconfigurationneedstobe
    performedatthispoint.
    Step 7ClickSave.
    Afterasecondarynodeisregisteredsuccessfully,youwillreceiveanalarmonyourPrimaryPANthatconfirms
    asuccessfulnoderegistration.IfthesecondarynodefailstoregisterwiththePrimaryPAN,thealarmisnot
    generated.Whenanodeisregistered,theapplicationserveronthatnodeisrestarted.Aftersuccessful
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    Configure a Cisco ISE Node 
    						
    							registrationanddatabasesynchronization,enterthecredentialsofthePrimaryPANtologintotheuser
    interfaceofthesecondarynode.
    InadditiontotheexistingPrimarynodeinthedeployment,whenyousuccessfullyregisteranewnode,
    noalarmcorrespondingtothenewlyregisterednodeisdisplayed.TheConfigurationChangedalarms
    reflectinformationcorrespondingtothenewlyregisterednodes.Youcanusethisinformationtoascertain
    thesuccessfulregistrationofthenewnode.
    Note
    What to Do Next
    •Fortime-sensitivetaskssuchasguestuseraccessandauthorization,logging,andsoon,ensurethatthe
    systemtimeonyournodesissynchronized.
    •IfyouregisteredaSecondaryPAN,andwillbeusingtheinternalCiscoISECAservice,youmustback
    uptheCiscoISECAcertificatesandkeysfromthePrimaryPANandrestorethemontheSecondary
    PAN.
    Administration Node
    ACiscoISEnodewiththeAdministrationpersonaallowsyoutoperformalladministrativeoperationson
    CiscoISE.Ithandlesallsystem-relatedconfigurationsthatarerelatedtofunctionalitysuchasauthentication,
    authorization,auditing,andsoon.Inadistributedenvironment,youcanhaveamaximumoftwonodes
    runningtheadministrationpersona.Theadministrationpersonacantakeonanyoneofthefollowingroles:
    Standalone,Primary,orSecondary.
    High Availability for the Administrative Node
    Inahigh-availabilityconfiguration,thePrimaryPANisintheactivestate,whichmeansthatallconfiguration
    changesaremadethere.TheSecondaryPAN(backupPAN)isinthestandbystate,whichmeansitreceives
    allconfigurationupdatesfromthePrimaryPAN.ThesecondaryPANiscontinuouslysynchronizedwiththe
    PrimaryPAN.
    IfthePrimaryPANgoesdown,youmustlogintotheuserinterfaceoftheSecondaryPANandmanually
    promotetheSecondaryPAN.ThereisnoautomaticfailoverfortheAdministrationpersona.
    WhenthePrimaryPANisdown,sponsorscannotcreatenewguestaccounts.Duringthistime,guestand
    sponsorportalswillprovideread-onlyaccesstoalreadycreatedguestsandsponsors,respectively.Also,a
    sponsorwhohasneverloggedintothesponsorportalbeforethePrimaryPANgoesoffline,willnotbeable
    tologintothesponsorportaluntilaSecondaryPANispromotedorthePrimaryPANbecomesavailable.
    AtleastonenodeinyourdistributedsetupmustassumetheAdministrationpersona.
    ThefollowingtablelistsasetoffeaturesandspecifieswhethertheyareavailableornotwhenthePrimary
    PANgoesdown.
    Available When the Primary PAN Goes Down
    (Yes/No)
    Feature
    YesExistinginternaluserRADIUSauthentication
    YesExistingorNewADuserRADIUSauthentication
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    Administration Node 
    						
    							Available When the Primary PAN Goes Down
    (Yes/No)
    Feature
    YesExistingendpointwithnoprofilechange
    YesExistingendpointwithprofilechange
    YesNewendpointlearnedthroughprofiling
    YesExistingguest–LWA
    YesExistingguest–CWA
    No(Guestmustloginwitholdpassword)Guestchangepassword
    YesGuest–AUP
    NoGuest–MaxFailedLoginEnforcement
    NoNewGuest(SponsoredorSelf-registered)
    YesPosture
    NoNewDeviceRegistration
    YesExistingRegisteredDevices
    NopxGrid
    Manually Promote Secondary PAN To Primary
    IfthePrimaryPANfailsandyouhavenotconfiguredPANauto-failover,youmustmanuallypromotethe
    SecondaryPANtobecomethenewPrimaryPAN.
    Before You Begin
    EnsurethatyouhaveasecondCiscoISEnodeconfiguredwiththeAdministrationpersonatopromoteasyour
    PrimaryPAN.
    Procedure
    Step 1LogintotheuserinterfaceoftheSecondaryPAN.
    Step 2ChooseAdministration>System>Deployment.
    Step 3IntheEditNodepage,clickPromotetoPrimary.
    YoucanonlypromoteaSecondaryPANtobecomethePrimaryPAN.CiscoISEnodesthatassumeonlythe
    PolicyServiceorMonitoringpersona,orboth,cannotbepromotedtobecomethePrimaryPAN.
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    Administration Node 
    						
    							Step 4ClickSave.
    What to Do Next
    IfthenodethatwasoriginallythePrimaryPANcomesbackup,itwillbedemotedautomaticallyandbecome
    theSecondaryPAN.Youmustperformamanualsynchronizationonthisnode(thatwasoriginallythePrimary
    PAN)tobringitbackintothedeployment.
    IntheEditNodepageofasecondarynode,youcannotmodifythepersonasorservicesbecausetheoptions
    aredisabled.YouhavetologintotheAdminportaltomakechanges.
    Policy Service Node
    ACiscoISEnodewiththePolicyServicepersonaprovidesnetworkaccess,posture,guestaccess,client
    provisioning,andprofilingservices.Thispersonaevaluatesthepoliciesandmakesallthedecisions.Youcan
    havemorethanonenodeassumethispersona.Typically,therewouldbemorethanonePolicyServicenode
    inadistributeddeployment.AllPolicyServicenodesthatresideinthesamehigh-speedLocalAreaNetwork
    (LAN)orbehindaloadbalancercanbegroupedtogethertoformanodegroup.Ifoneofthenodesinanode
    groupfails,theothernodesdetectthefailureandresetanyURL-redirectedsessions.
    AtleastonenodeinyourdistributedsetupshouldassumethePolicyServicepersona.
    High Availability in Policy Service Nodes
    TodetectnodefailureandtoresetallURL-redirectedsessionsonthefailednode,twoormorePolicyService
    nodescanbeplacedinthesamenodegroup.Whenanodethatbelongstoanodegroupfails,anothernode
    inthesamenodegroupissuesaChangeofAuthorization(CoA)forallURL-redirectedsessionsonthefailed
    node.
    Allthenodeswithinthesamenodegroupshouldbeconfiguredonthenetworkaccessdevice(NAD)as
    RADIUSclientsandauthorizedforCoA,becauseanyoneofthemcanissueaCoArequestforthesessions
    thatareestablishedthroughanynodeinthenodegroup.Ifyouarenotusingaloadbalancer,thenodesina
    nodegroupshouldbethesameas,orasubsetof,theRADIUSserversandclientsconfiguredontheNAD.
    ThesenodeswouldalsobeconfiguredasRADIUSservers.
    WhileasingleNADcanbeconfiguredwithmanyISEnodesasRADIUSserversanddynamic-authorization
    clients,itisnotnecessaryforallthenodestobeinthesamenodegroup.
    Themembersofanodegroupshouldbeconnectedtoeachotherusinghigh-speedLANconnectionsuchas
    GigabitEthernet.ThenodegroupmembersneednotbeL2adjacent,butL2adjacencyishighlyrecommended
    toensuresufficientbandwidthandreachability.SeeCreateaPolicyServiceNodeGroup,onpage50section
    formoredetails.
    Load Balancer To Distribute Requests Evenly Among PSNs
    WhenyouhavemultiplePolicyServicenodesinthedeployment,youcanusealoadbalancertodistribute
    therequestsevenly.Theloadbalancerdistributestherequeststothefunctionalnodesbehindit.Refertothe
    CiscoandF5DeploymentGuide:ISELoadBalancingusingBIG-IPforinformationonandbestpractices
    aboutdeployingPSNsbehindaloadbalancer.
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    Policy Service Node 
    						
    							Session Failover in Policy Service Nodes
    WhenaPolicyServicenodethathasactiveURL-redirectedsessionsfails,theendpointsarestuckinan
    intermediatestate.EveniftheredirectendpointdetectsthatthePolicyServicenodethatithasbeen
    communicatingwithhasfailed,itcannotre-initiateauthorization.
    IfthePolicyServicenodesarepartofanodegroup,thenodeswithinanodegroupexchangeheartbeat
    messagestodetectnodefailures.Ifanodefails,oneofitspeersfromthenodegrouplearnsabouttheactive
    URL-redirectedsessionsonthefailednodeandissuesaCoAtodisconnectthosesessions.
    Asaresult,thesessionsarehandledbyanotherPolicyServicenodethatisavailableinthesamenodegroup.
    ThesessionfailoverdoesnotautomaticallymovethesessionsoverfromaPolicyServicenodethathasgone
    downtoonethatisavailable,butissuesaCoAtoachievethat.
    ThePolicyServicenodesinadistributeddeploymentdonotsharetheirMachineAccessRestriction(MAR)
    cachewitheachother.IfyouhaveenabledtheMARfeatureinCiscoISEandtheclientmachineisauthenticated
    byaPolicyServicenodethatfails,thenanotherPolicyServicenodeinthedeploymenthandlestheuser
    authentication.However,theuserauthenticationfailsbecausethesecondPolicyServicenodedoesnothave
    thehostauthenticationinformationinitsMARcache.
    Number of Nodes in a Policy Service Node Group
    Thenumberofnodesthatyoucanhaveinanodegroupdependsonyourdeploymentrequirements.Node
    groupsensurethatnodefailuresaredetectedandthatapeerissuesaCoAforsessionsthatareauthorized,but
    notyetpostured.Thesizeofthenodegroupdoesnothavetobeverylarge.
    Ifthesizeofthenodegroupincreases,thenumberofmessagesandheartbeatsthatareexchangedbetween
    nodesincreasessignificantly.Asaresult,trafficalsoincreases.Havingfewernodesinanodegrouphelps
    reducethetrafficandatthesametimeprovidessufficientredundancytodetectPolicyServicenodefailures.
    ThereisnohardlimitonthenumberofPolicyServicenodesthatyoucanhaveinanodegroupcluster.
    Monitoring Node
    ACiscoISEnodewiththeMonitoringpersonafunctionsasthelogcollectorandstoreslogmessagesfrom
    alltheadministrationandPolicyServicenodesinyournetwork.Thispersonaprovidesadvancedmonitoring
    andtroubleshootingtoolsthatyoucanusetoeffectivelymanageyournetworkandresources.Anodewith
    thispersonaaggregatesandcorrelatesthedatathatitcollectstoprovideyouwithmeaningfulinformationin
    theformofreports.
    CiscoISEallowsyoutohaveamaximumoftwonodeswiththispersonathatcantakeonprimaryorsecondary
    rolesforhighavailability.BoththeprimaryandsecondaryMonitoringnodescollectlogmessages.Incase
    theprimaryMonitoringnodegoesdown,thesecondaryMonitoringnodeautomaticallybecomestheprimary
    Monitoringnode.
    AtleastonenodeinyourdistributedsetupshouldassumetheMonitoringpersona.Werecommendthatyou
    nothavetheMonitoringandPolicyServicepersonasenabledonthesameCiscoISEnode.Werecommend
    thatthenodebededicatedsolelytomonitoringforoptimumperformance.
    YoucanaccesstheMonitoringmenufromthePANandthePrimaryMonitoringNodeinyourdeployment.
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    Monitoring Node 
    						
    							Automatic Failover in Monitoring Nodes
    ThetermautomaticfailoverisusedbecausehighavailabilityisnotsupportedonMonitoringnodesinthetrue
    sense.ForMonitoringnodes,operationauditdataisduplicatedbythePolicyServicenode(s),whichthen
    sendscopiestoboththeprimaryandsecondaryMonitoringnodes.
    Monitoringisservedfromtheprimary(active)Monitoringnode.Monitoringdataisonlyservedfromthe
    secondary(standby)Monitoringnodewhentheactivenodeisdown.Thesecondarymonitoringnodeis
    read-only.
    Note
    Automatic Failover Process
    WhenaprimaryMonitoringnodegoesdown,thesecondaryMonitoringnodetakesoverallmonitoringand
    troubleshootinginformation.Thesecondarynodeprovidesread-onlycapabilities.
    Toconverttheexistingsecondarynodetoanactiveprimarynode,theadministratormustfirstmanually
    promotethesecondarynodetoaprimaryrole.Iftheprimarynodecomesbackupafterthesecondarynode
    hasbeenpromoted,itassumesthesecondaryrole.Ifthesecondarynodewasnotpromoted,theprimary
    Monitoringnodewillresumeitsroleafteritcomesbackup.
    Whentheprimarynodecomesbackupafterafailover,obtainabackupandrestorethedatatoupdatethe
    primarynode.
    Caution
    Guidelines for Setting Up an Active-Standby Pair of Monitoring Nodes
    YoucanspecifytwoMonitoringnodesonanISEnetworkandcreateanactive-standbypair.Whenyouregister
    asecondaryMonitoringnode,werecommendthatyoubackuptheprimaryMonitoringnodeandthenrestore
    thedatatothenewsecondaryMonitoringnode.ThisensuresthatthehistoryoftheprimaryMonitoringnode
    isinsyncwiththenewsecondarynodeasnewchangesarereplicated.Oncetheactive-standbypairisdefined,
    thefollowingrulesapply:
    •AllchangesmustbemadeontheprimaryMonitoringnode.Thesecondarynodeisread-only.
    •Changesmadetotheprimarynodeareautomaticallyreplicatedonthesecondarynode.
    •Boththeprimaryandsecondarynodesarelistedaslogcollectorstowhichallothernodessendlogs.
    •TheCiscoISEdashboardisthemainentrypointformonitoringandtroubleshooting.Monitoring
    informationisdisplayedonthedashboardfromtheprimaryMonitoringnode.Iftheprimarynodegoes
    down,theinformationisservedfromthesecondarynode.
    •BackingupandpurgingmonitoringdataisnotpartofastandardCiscoISEnodebackupprocess.You
    mustconfigurerepositoriesforbackupanddatapurgingonboththeprimaryandsecondaryMonitoring
    nodes,andusethesamerepositoriesforeach.
    Monitoring Node Failover Scenarios
    Thefollowingscenariosapplytotheactive-standbyorsinglenodeconfigurationscorrespondingtothe
    monitoringnodes:
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    Monitoring Node 
    						
    							•Inanactive-standbyconfigurationofthemonitoringnodes,thePrimaryAdministrationNode(PAN)
    alwayspointstotheactivemonitoringnodetocollectthemonitoringdata.Aftertheactivemonitoring
    nodefails,thePANpointstothestandbymonitoringnode.Thefailoverfromtheactivemonitoringnode
    tothestandbymonitoringnodehappensafteritisdownformorethan5minutes.
    However,aftertheactivenodefails,thestandbynodedoesnotbecometheactivenode.Incasethe
    activenodecomesup,theAdministrationnodestartscollectingthemonitoringdataagainfromthe
    resumedactivenode.
    •Duringthetimethattheactivemonitoringnodeisdown,ifyouwanttopromotethestandbymonitoring
    nodetoactivestatus,youmustde-registertheexistingactivemonitoringnode.Whenyoude-register
    theexistingactivemonitoringnode,thestandbynodebecomestheactivemonitoringnodeandthePAN
    automaticallystartspointingtothenewlypromotedactivenode.
    •Inanactive-standbypair,ifyouchoosetode-registerthestandbymonitoringnodefromthedeployment
    orifthestandbymonitoringnodegoesdown,theexistingactivemonitoringnodestillretainstheactive
    nodestatus.ThePANpointstotheexistingactivenodefordatacollection.
    •IfthereisonlyonemonitoringnodeintheISEdeployment,thenthatnodeactsastheactivemonitoring
    nodethatprovidesmonitoringdatatothePAN.However,whenyouregisteranewmonitoringnode
    andmakeittheactivenodeinthedeployment,theexistingactivemonitoringnodeautomaticallybecomes
    thestandbynode.ThePANbeginstopointtothenewlyregisteredactivemonitoringnodeforcollecting
    monitoringdata.
    pxGrid Node
    YoucanuseCiscopxGridtosharethecontext-sensitiveinformationfromCiscoISEsessiondirectorywith
    othernetworksystemssuchasISEEcosystempartnersystemsandotherCiscoplatforms.ThepxGrid
    frameworkcanalsobeusedtoexchangepolicyandconfigurationdatabetweennodeslikesharingtagsand
    policyobjectsbetweenCiscoISEandthirdpartyvendors,andforotherinformationexchanges.pxGridalso
    allows3rdpartysystemstoinvokeadaptivenetworkcontrolactions(EPS)toquarantineusers/devicesin
    responsetoanetworkorsecurityevent.TheTrustSecinformationliketagdefinition,value,anddescription
    canbepassedfromCiscoISEviaTrustSectopictoothernetworks.TheendpointprofileswithFullyQualified
    Names(FQNs)canbepassedfromCiscoISEtoothernetworksthroughaendpointprofilemetatopic.Cisco
    pxGridalsosupportsbulkdownloadoftagsandendpointprofiles.
    Inahigh-availabilityconfiguration,CiscopxGridserversreplicateinformationbetweenthenodesthrough
    thePAN.WhenthePANgoesdown,pxGridserverstopshandlingtheclientregistrationandsubscription.
    YouneedtomanuallypromotethePANforthepxGridservertobecomeactive.
    ForXMPP(ExtensibleMessagingandPresenceProtocol)clients,pxGridnodesworkinActive/Standbyhigh
    availabilitymodewhichmeansthatthepxGridServiceisin"running"stateontheactivenodeandin"disabled"
    stateonthestandbynode.
    AftertheautomaticfailovertothesecondarypxGridnodeisinitiated,iftheoriginalprimarypxGridnodeis
    broughtbackintothenetwork,theoriginalprimarypxGridnodewillcontinuetohavethesecondaryroleand
    willnotbepromotedbacktotheprimaryroleunlessthecurrentprimarynodegoesdown.
    Attimes,theoriginalprimarypxGridnodemightbeautomaticallypromotedbacktotheprimaryrole.Note
    Inahighavailabilitydeployment,whentheprimarypxGridnodegoesdown,itmighttakearound3to5
    minutestoswitchovertothesecondarypxGridnode.Itisrecommendedthattheclientwaitsfortheswitchover
    tocomplete,beforeclearingthecachedataincaseofprimarypxGridnodefailure.
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    pxGrid Node 
    						
    							ThefollowinglogsareavailableforpxGridnode:
    •pxgrid.log—Statechangenotifications.
    •pxgrid-cm.log—Updatesonpublisher/subscriberanddataexchangeactivitybetweenclientandserver.
    •pxgrid-controller.log—Displaysthedetailsofclientcapabilities,groups,andclientauthorization.
    •pxgrid-jabberd.log—Alllogsrelatedtosystemstateandauthentication.
    •pxgrid-pubsub.log—Informationrelatedtopublisherandsubscriberevents.
    pxGrid Client and Capability Management
    ClientsconnectedtoCiscoISEneedtoregistertousethepxGridservices.pxGridclientsshouldadoptthe
    pxGridClientLibraryavailablefromCiscothroughthepxGridSDKtobecometheclients.CiscopxGrid
    clientsneedanapprovedaccounttoparticipateinpxGridservices.CiscoISEsupportsbothautoandmanual
    approvals.AclientcanlogintopxGridusingauniquenameandcertificate-basedmutualauthentication.
    SimilartotheAAAsettingonaswitch,clientscanconnecttoeitheraconfiguredpxGridserverhost-name
    oranIPAddress.
    CapabilitiesareinformationtopicsorchannelscreatedonpxGridforclientstopublishandsubscribe.InCisco
    ISE,onlycapabilitiessuchasIdentity,adaptivenetworkcontrol,andSGAaresupported.Youcanenableor
    disablecapabilities.Ifdisabled,theclientisunsubscribed.Capabilityinformationisavailablefromthepublisher
    throughpublish,directedquery,orbulkdownloadquery.
    Related Topics
    GeneratepxGridCertificate
    Enable pxGrid Clients
    Before You Begin
    •EnablethepxGridpersonaonatleastonenodetoviewtherequestsfromtheCiscopxGridclients.
    •EnableIdentityMapping.Formoreinformation,seeConfigureIdentityMapping,onpage46.
    Procedure
    Step 1ChooseAdministration>pxGridServices.
    Step 2CheckthecheckboxnexttotheclientandclickApprove.
    Step 3Toviewthecapabilities,clickViewbyCapabilitiesatthetop-right.
    Step 4ClickRefreshtoviewthelateststatus.
    Cisco pxGrid Live Logs
    TheLiveLogspagedisplaysallthepxGridmanagementevents.Eventinfoincludestheclientandcapability
    namesalongwiththeeventtypeandtimestamp.
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    pxGrid Node 
    						
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