peplink ONE One - Page 241

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PerformanceOptimization
Scenario
Inthisscenario,emailandwebbrowsingarethetwomainInternetservicesusedby
LANusers. 
Themailserverisexternaltothenetwork.TheconnectionsareADSL(WAN1,withslow
uplinkandfastdownlink)andMetroEthernet(WAN2,symmetric).
Solution
Foroptimalperformancewiththisconfiguration,individuallysettheWANloadbalance
accordingtothecharacteristicsofeachservice.
● Webbrowsingmainlydownloadsdata;sendingemailsmainlyconsumesupload
bandwidth. 
● Bothconnectionsoffergooddownloadspeeds;WAN2offersgoodupload
speeds.
● DefineWAN1andWAN2'sinboundandoutboundbandwidthstobe30M/2Mand
50M/50M,respectively.Thiswillensurethatoutboundtrafficismorelikelytobe
routedthroughWAN2.
● ForHTTP,settheweightto3:4. 
● ForSMTP,settheweightto1:8,suchthatuserswillhaveagreaterchancetobe
routedviaWAN2whensendingemail.
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MaintainingtheSameIPAddressThroughoutaSession
Scenario
SomeIPaddresssensitivewebsites(forexample,Internetbanking)usebothclientIP
addressandcookiematchingforsessionidentification.Sinceloadbalancinguses
differentIPaddresses,thesessionisdroppedwhenamismatchedIPisdetected,
resultinginfrequentinterruptionswhilevisitingsuchsites.
Solution
MakeuseofthepersistencefunctionalityofthePeplinkBalance.Withpersistence
configuredandtheByDestinationoptionselected,thePeplinkBalancewillusea
consistentWANconnectionforsourcedestinationpairsofIPaddresses,preventing
sessionsfrombeingdropped.
WithpersistenceconfiguredandtheoptionBySourceisselected,thePeplinkBalance
usesaconsistentWANconnectionforsamesourceIPaddresses.Thisoptionoffers
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