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Sierra Raven EDGE Network Card User Manual

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Rev 3.0B Feb.08 52

7

7: IP Manager

• Understanding Domain

Names

• Using IP Manager with

your Raven

• Understanding DNS

IfyouhaveafleetofSierraWirelessAirLinkmodemsoreven

ifyouonlyhaveone,itcanbedifficulttokeeptrackofthe

currentIPaddresses,especiallyiftheaddressesaren’tstatic

butchangeeverytimethemodemsconnecttoProvider.Ifyou

needtoconnecttoa

modem,orthedevicebehindit,itisso

mucheasierwhenyouhaveadomainname

(car54.mydomain.com,whereareyou?).

Reasons to contact the modem and/or the connected

device:

• Requestingalocationupdatefromadeliverytruck.

• Contactingasurveillancecameratodownloadlogsor

surveyaspecificarea.

• Anoilderekthatneedstobetriggeredtobeginpumping.

• Sendingtexttobedisplayedbyaroadsign.

• Updatingthesongstobeplayedonajukebox.

• Updatingadvertisementstobedisplayedinacab.

• Remoteaccesstoacom puter,aPLC,anRTU,orother

system.

• Monitoringandtroubleshootingthestatusofthemodem

itselfwithoutneedingtobringitinorgoouttoit.

AdynamicIPaddressissuitablefor manyInternetactivities

suchaswebbrowsing,lookingupdataonanothercomputer

system,dataonlybeingsentout,ordataonlybeingreceived

afteraninitialrequest(alsocalledMobileOriginated).

However,ifyouneedtocontactRavendirectly,adevice

connectedto

themodem,orahostsystemusingyourRaven

(alsocalledMobileTerminated),adynamicIPwon’tgiveyoua

reliableaddresstocontact(sinceitmayhavechangedsincethe

lasttimeitwasassigned).

DomainnamesareoftenonlyconnectedtostaticIPaddresses

becauseofthewaymostdomainname(DNS)serversareset‐

up.DynamicDNSserversrequirenotificationofIPAddress

changessotheycanupdatetheirDNSrecordsandlinka

dynamicIPaddresstothecorrectname.

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