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DeviceStudio
CreatenewcustomizedCPU/memorypollers,customproperty,ornode
detailpollers.Youcanalsoimportpollerscreatedandusedbyyourpeers
fromthwack.com.
CapacityForecasting
NPMcanalsoprovideyouwiththeinformationwhenthecapacityofyour
nodes,interfacesandvolumeswillbefullyused,andhelpyoutake
appropriatemeasuresbeforefullusageissuesoccur.
41
KeyFeaturesofSolarWindsNPM
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Chapter1:Introduction
Networking Conceptsand Terminology
Thefollowingsectionsdefinethenetworkingconceptsandterminologythatare
usedwithinNPM.
l
Internet
Control
Message
Protocol
(ICMP)
l
Simple
Network
Management
Protocol
(SNMP)
l
SNMP
Credentials
l
Management
Information
Base
(MIB)
l
Windows
Management
Instrumentation
(WMI)
InternetControlMessageProtocol(ICMP)
SolarWindsNPMusestheInternetControlMessageProtocol(ICMP)topollfor
statususingpingandechorequestsofmanageddevices.WhenSolarWinds
NPMpollsamanageddeviceusingICMP,ifthedeviceisoperationallyup,it
returnsaresponsetimeandrecordofanydroppedpackets.Thisinformationis
usedbySolarWindsNPMtomonitorstatusandmeasureaverageresponsetime
andpacketlosspercentageformanageddevices.
Note:SolarWindsNPMonlyusesICMPtopolldevicesforstatus,average
responsetime,andpacketlosspercentage.Otherinformationdisplayedinthe
OrionWebConsolemaybeobtainedusingSNMPandWMIrequestsorVMware
andUCSAPIs.
SimpleNetworkManagementProtocol(SNMP)
Formostnetworkmonitoringandmanagementtasks,NPMusestheSimple
NetworkManagementProtocol(SNMP).
SNMP-enablednetworkdevices,includingrouters,switches,andPCs,host
SNMPagentsthatmaintainavirtualdatabaseofsystemstatusandperformance
informationthatistiedtospecificObjectIdentifiers(OIDs).Thisvirtualdatabaseis
referredtoasaManagementInformationBase(MIB),andSolarWindsNPMuses
MIBOIDsasreferencestoretrievespecificdataaboutaselected,
SNMP-enabled,manageddevice.AccesstoMIBdatamaybesecuredeitherwith
SNMPCommunityStrings,asprovidedwithSNMPv1andSNMPv2c,orwith
optionalSNMPcredentials,asprovidedwithSNMPv3.
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Notes:
l
Toproperlymonitordevicesonyournetwork,youmustenableSNMPonall
devicesthatarecapableofSNMPcommunications.Thestepstoenable
SNMPdifferbydevice,soyoumayneedtoconsultthedocumentation
providedbyyourdevicevendor.
l
IfSNMPv2cisenabledonadeviceyouwantOriontomonitor,bydefault,
OrionwillattempttouseSNMPv2ctopollthedeviceforperformance
information.IfyouonlywantOriontopollusingSNMPv1,youmustdisable
SNMPv2conthedevicetobepolled.
FormoreinformationaboutMIBs,seeManagement
Information
Base
(MIB)
.For
moreinformationaboutSNMPcredentials,seeSNMP
Credentials
.
SNMPCredentials
SNMPcredentialssecureaccesstoSNMP-enabledmanageddevices.SNMPv1
andSNMPv2ccredentialsserveasatypeofpasswordthatisauthenticatedby
confirmingamatchbetweenacleartextSNMPCommunityStringprovidedbyan
SNMPrequestandtheSNMPCommunityStringstoredasaMIBobjectonan
SNMP-enabled,manageddevice.
SNMPv3providesamoresecureinteractionbyemployingthefollowingfields:
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TheUserNameisarequiredcleartextstringthatidentifiestheagentorpoll
requestthatisattemptingtoaccessanSNMP-enableddevice.UserName
functionssimilarlytotheSNMPCommunityStringofSNMPv1andv2c.
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TheContextisanoptionalidentifyingfieldthatcanprovideanadditional
layeroforganizationandsecuritytotheinformationavailableintheMIBof
anSNMP-enableddevice.Typically,thecontextisanemptystringunlessit
isspecificallyconfiguredonanSNMP-enableddevice.
l
SNMPv3providestwooptionalAuthenticationMethods:MessageDigest
5(MD5)andSecureHashAlgorithm1(SHA1).Bothmethods,MD5and
SHA1,includetheAuthenticationKeywiththeSNMPv3packetandthen
generateadigestofanentireSNMPv3packetthatisthensent.MD5
digestsare16byteslong,andSHA1digestsare20byteslong.Whenthe
packetisreceived,theUserNameisusedtorecreateapacketdigestusing
theappropriatemethod.Bothdigestsarethencomparedtoauthenticate.
l
SNMPv3providestwooptionalPrivacy/EncryptionMethods:
43
SNMPCredentials
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Chapter1:Introduction
o
DataEncryptionStandard(DES56).DES56usesa56-bitkeywitha
56-bitsalttoencrypttheSNMPv3packetdata.Allpacketheadersare
sentinclear-text.
o
AdvancedEncryptionStandards(AES128,AES192,andAES256)
using128-,192-,or256-bitkeys,respectively,with128-,192-,or256-
bitsalts.Allpacketheadersaresentinclear-text.
PasswordisaKey
The"passwordisakey"feature,alsoknownas"localizedkey"meansthatthe
hashiscomputedusingacombinationoftheuserdefinedpasswordandfromthe
SNMPagent'sengineID.Thisfeaturecanbeusedinsteadofplaintext
authenticationonSNMP devices.
EachSNMPv3agenthasanengineIDthatuniquelyidentifiestheagentonthe
device.Ifadevicegetscompromised,noothermanagedormanagingdevices
areaffectedbyit.
IfyourdevicessupportlocalizedkeysandtheSNMPsettingsonyourdeviceare
setupforauthenticationwiththelocalizedkey(hash),youmustalsomake
appropriatechangesintheOrionnodesettings.
Tosetthelocalizedkey:
1. LogintotheOrionWebConsoleusinganaccountwithadministrator
privileges.
2. GototheEditNodeview.SelectSettings>ManageNodes,selectthe
node,andthenclickEditProperties.
3. IntheEditNodeview,selecttheSNMPv3pollingmethod.
4. MakesurethePasswordisakeyboxisselectedforSNMPv3
AuthenticationorPrivacy/Encryption,asappropriate.
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ManagementInformationBase(MIB)
AManagementInformationBase(MIB)istheformaldescriptionofasetofobjects
thatcanbemanagedusingSNMP.MIB-IreferstotheinitialMIBdefinition,and
MIB-IIreferstothecurrentdefinition.EachMIBobjectstoresavaluesuchas
sysUpTime,bandwidthutilization,orsysContactthatcanbepolledtoprovide
currentperformancedataforanyselecteddevice.Forexample,whenpollingyour
networkforperformancedata,OrionNetworkPerformanceMonitorsendsan
SNMPGETrequesttoeachnetworkdevicetopollthespecifiedMIBobjects.
ReceivedresponsesarethenrecordedintheOriondatabaseforuseinOrion
products,includingwithinOrionWebConsoleresources.
MostnetworkdevicescansupportseveraldifferenttypesofMIBs.Whilemost
devicessupportthestandardMIB-IIMIBs,theymayalsosupportanyofanumber
ofadditionalMIBsthatyoumaywanttomonitor.UsingafullycustomizableOrion
UniversalDevicePoller,youcangatherinformationfromvirtuallyanyMIBonany
networkdevicetowhichyouhaveaccess.
WindowsManagementInstrumentation(WMI)
WindowsManagementInstrumentation(WMI)isaproprietarytechnologyusedto
pollperformanceandmanagementinformationfromWindows-basednetwork
devices,applications,andcomponents.WhenusedasanalternativetoSNMP,
WMIcanprovidemuchofthesamemonitoringandmanagementdatacurrently
availablewithSNMP-basedpollingwiththeadditionofWindows-specific
communicationsandsecurityfeatures.FormoreinformationaboutWMI,seethe
Microsoftarticle,About
WMI
.
Notes:
l
DuetospecificcharacteristicsofWMIpollingrequests,pollingasingle
WMI-enabledobjectusesapproximatelyfivetimestheresourcesrequiredto
pollthesameorsimilarobjectwithSNMPonthesamepollingfrequency.
l
SolarWindsNPMdoesnotcurrentlyuseWMItomonitorinterfaces.
Agents
Youcanalsopollinformationaboutyournetworkdevicesusingagents.
AnagentissoftwarethatprovidesacommunicationchannelbetweentheOrion
serverandaWindowscomputer.Agentsareusedtoprovidepacket-leveltraffic
informationaboutkeydevicesandapplicationsthatyouspecify.
45
ManagementInformationBase(MIB)
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Chapter1:Introduction
Theagentallowsyoutomonitorservershostedbycloudbasedservicessuchas
AmazonEC2,Rackspace,MicrosoftAzure,orvirtuallyanyotherInfrastructureas
aService(IaaS).
Oncedeployed,allcommunicationbetweentheOrionserverandtheagentoccur
overasinglefixedport.Thiscommunicationisfullyencryptedusing2048bitTLS
encryption.TheagentprotocolsupportsNATtraversalandpassingthroughproxy
serversthatrequireauthentication.
Formoreinformation,seeSolarWinds
Orion
Agents
.
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How NetworkPerformanceMonitorWorks
ThroughICMP,SNMP,WMI,andSyslogcommunicationanddatacollection,
SolarWindsNPMcontinuouslymonitorsthehealthandperformanceofyour
network,anditdoesthiswithoutinterferingwiththecriticalfunctionsofyour
networkdevices.Unlikemanyothernetworkmonitoringproducts,SolarWinds
NPMhelpsyoumaintaintheoverallperformanceofyournetworkinthefollowing
ways:
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NPMdoesnotinstalloutsideagentsonyourmission-criticalservers
l
NPMdoesnotemployservicesthattakevitalresourcesfromcritical
applications
l
NPMdoesnotinstallanycodeonmonitorednetworkdevices.Unmanaged
oroutdatedcodecanopensecurityholesinyournetwork.
AfterinstallingSolarWindsNPM,youcanautomatetheinitialdiscoveryofyour
network,andthensimplyaddnewdevicesformonitoringasyouaddthemtoyour
network.SolarWindsNPMstoresallgatheredinformationinaSQLdatabaseand
providesthehighlycustomizablewebconsoleinwhichtoviewcurrentand
historicalnetworkstatus.
47
HowNetworkPerformanceMonitorWorks
Chapter 2: Installing SolarWinds
Network Performance Monitor
SolarWindsNetworkPerformanceMonitor(SolarWindsNPM)providesasimple,
wizard-driveninstallationprocess.Foranenterprise-classproduct,licensing,
hardwareandsoftwarerequirementsarenominal.
Thischapterprovidesmoreinformationaboutthefollowingtopics:
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SolarWinds
NPM
Requirements
l
Licensing
SolarWinds
Network
Performance
Monitor
l
Maintaining
Licenses
l
Antivirus
Directory
Exclusions
l
Enabling
and
Requiring
Secure
Channels
with
SSL
l
Enabling
FIPS
l
Installing
SolarWinds
Network
Performance
Monitor
l
Upgrading
SolarWinds
Network
Performance
Monitor
48
Chapter2:InstallingSolarWindsNetworkPerformanceMonitor
SolarWindsNPM Requirements
SolarWindsrecommendsinstallingSolarWindsNPMonitsownserver,withthe
Oriondatabasehostedseparately,onitsownSQLServer.Installationsofmultiple
Orionservers,includingSolarWindsNPM,OrionServer&ApplicationMonitor,
andOrionNetworkConfigurationManagerusingthesamedatabasearenot
supported.
Note:AnyandallinstalledAdditionalPollingEnginesandAdditionalWeb
ServersmustusethesameversionthatisinstalledontheprimaryOrionserver.
Thefollowingsectionsprovidespecificrequirements:
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Orion
Server
Hardware
Requirements
l
Orion
Server
Software
Requirements
l
Requirements
for
the
Orion
Database
Server
(SQL
Server)
l
Requirements
for
Virtual
Machines
and
Servers
l
Additional
Requirements
l
SNMP
Requirements
for
Monitored
Devices
Forrecommendationsandbestpractices,consultthefollowingsections:
l
Server
Sizing
l
SQL
Server
Configuration
Best
Practices
OrionServerSoftwareRequirements
Thefollowingtablelistsminimumsoftwarerequirementsandrecommendations
foraSolarWindsOrioninstallation.
Software
Requirements
Operating
System
WindowsServer2003R2SP2(32-or64-bit)
WindowsServer 2008,2008 SP2,2008 R2,2008 R2 SP1
WindowsServer 2012and2012 R2
Notes:
49
Software
Requirements
l
IISandMSMQmustbeinstalled.SolarWindsrecommends
thatOrionadministratorshavelocaladministratorprivileges
toensurefullfunctionalityoflocalOriontools.Accounts
limitedtouseoftheOrionWebConsoledonotrequire
administratorprivileges.
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SolarWindsdoesnotsupportproductioninstallationsof
OrionproductsonWindows XP,WindowsVista,Windows 7,
orWindows 8systems.
l
EvaluationversionsofSolarWindsproductsaresupported
onWindows 7,Windows 7 SP1,Windows 8(exceptfor
StandardEdition),Windows 8.1(exceptforStandard
Edition),andWindows 8.1Update 1(exceptforStandard
Edition).
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SolarWindsproductsarenotcompatiblewithinstallationsof
InternetInformationServicesversion 6.0(IIS6)thatmakeuse
ofwebgardens.
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SolarWindsSAMinstallationsonWindowsServer 2008
requireR2.Formoreinformation,see"AdditionalSAM
Requirements"intheSolarWinds
Server
&
Application
Monitor
Administrator
Guide
.
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InstallingSolarWindsNPMonWindowsServer 2012 R2
Essentialsisnotsupported.
Operating
System
Languages
English(UKorUS),German,Japanese,orSimplifiedChinese
IPAddress
Version
IPv4orIPv6implementedasadualstack.Formoreinformation,
seeRFC
4213
-
Basic
Transition
Mechanisms
for
IPv6
Hosts
and
Routers
.
Note:CIDRnotationisnotcurrentlysupportedforIPv6addresses.
Application
Ports
25(TCP)SMTP portfornon-encryptedmessages.
161(UDP)forNPMstatisticscollection
50
OrionServerSoftwareRequirements
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