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Sierra Wireless RJ-11 Network Card User Manual

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Rev 3.0 B 2/29/08 33

ToenableTCPkeep‐alivesonserial‐relatednetworkconnec‐

tions,enterthetotaltime(inseconds)thatyouwillallowTCP

connectionstoremainidlebeforeresettingthem.Thefirst

keep‐alivepacketwillbesentaftertheconnectionhasbeen

idleforhalfofthistotaltime.Aftert hat,fourmoreTCPkeep‐

alivepacketswillbesentat

regularintervalsuntilaTCP

responseisreceivedfromtheremotehost.Ifnoresponseis

receivedbeforethetotalkeep‐alivetimerunsout,theTCP

connectionwillbereset.

Caution: Enabling TCP keep-alives will increase the amount of

network traffic on your network. Unless you have a specific need for

this feature, it is best to leave it disabled. If you do enable it, it is best

to make the keep-alive time-out larger to reduce network traffic.

DNS Settings

TheDNSSettingspageallowsyoutospecifyaDNSnamefor

yourunit,specifytheaddressesofDNSserverstoresolve

names,andtopre‐definesomehostnames.TheDNSname

andserverscanalsobederivedfromaDHCPserver.

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