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Rev 2.0 Jul.09 78

10: SNMP : Simple Network

Management Protocol

• SNMP Configuration

• SNMP MIB Definition

Sample

TheSimpleNetworkManagementProtocol(SNMP)was

designedtoallowremotem anagementandmonitoringofa

varietyofdevicesfromacentrallocation.TheSNMP

managementsystemisgenerallycomposedofagents(suchas

yourRavenXE,arouter,aUPS,awebserver,afileserver,or

othercomputerequipment)

andaNetworkManagement

Station(NMS)whichmonitorsalltheagentsonaspecific

network.Usingthemanagementinformationbase(MIB),an

NMScanincludereporting,networktopologymapping,tools

toallowtrafficmonitoringandtrendanalysis,anddevice

monitoring.

AuthenticationensuresSNMPmessagescomingfromthe

agent,suchastheRavenXE,havenotbeenmodifiedandthe

agentmaynotbequeriedbyunauthorizedusers.SNMPv3

usesaUser‐BasedSecurityModel(USM)toauthenticateand,

ifdesiredorsupported,messageencryption. USMusesauser

nameandpassword

specifictoeachdevice.

TheRavenXEcanbeconfiguredasanSNMPagentand

supportsSNMPv2candSNMPv3.

Management Information Base (MIB)

Themanagementinformationbase(MIB)isatypeofdatabase

usedtocompiletheinformationfromthevariousSNMP

agents.Reportsfromvariousagents,suchastheRavenXE,are

sentasdatainformdesignedtobeparsedbytheNMSintoits

MIB.Thedataishierarchicalwithentries

addressedthrough

objectidentifiers.

SNMP Traps

SNMPtrapsarealertsthatcanbesentfromthemanaged

devicetotheNetworkManagementStationwhenanevent

happens.YourRavenXEiscapableofsendingthelinkUptrap

whenthenetworkconnectionbecomesavailable.

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AirLink Communications Raven X HSDPA Guia do Utilizador Página 85