Tripp Lite B092-016 - Always-On Dial-Out; Dial-Out Failover

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• SpecifytheProbe Addresses oftwosites(thePrimary and Secondary)thattheB096-048/016istoping to determine
ifNetwork(eth0)isstilloperational
• ThencongureManagement LAN Interface (eth1) with the same IP setting that you used for the main Network
Interface (eth0) to ensure transparent redundancy
Inthismode,Network2(eth1)isavailableasthetransparentback-upporttoNetwork1(eth0)foraccessingthe
managementnetwork.Network2willautomaticallyandtransparentlytakeovertheworkofNetwork1,intheeventNetwork1
becomes unavailable for any reason.
Bydefault,theConsoleServersupportsautomaticfailure-recoverybacktotheoriginalstatepriortofailover.TheConsole
Server continually pings probe addresses whilst in original and failover states. The original state will automatically be set as
apriorityandre-establishedfollowingthreesuccessfulpingsoftheprobeaddressesduringfailover.Thefailoverstatewillbe
removedoncetheoriginalstatehasbeenre-established.
Chapter 5: Firewall, Failover and Out-of-Band
5.4 Dial-Out Access
The internal or externally attached modem on the Console Servers can be set up either
o in Failover mode,whereadial-outconnectionisonlyestablishedineventofapingfailure,or
 o withthedial-outconnectionalwayson
Inbothoftheabovecases,intheeventofadisruptioninthedial-outconnection,theConsoleServerwillendeavortore-
establish the connection.
5.4.1 Always-on dial-out
TheConsoleServermodemcanbeconguredforout-dialtobealwayson,withapermanentexternaldial-uppppconnection.
• Selectthe System: Dial menu option and check Enable Dial-Out to allow outgoing modem communications
• SelecttheBaud Rate and Flow Control that will communicate with the modem
• IntheDial-Out Settings - Always On Out-of-Band field enter the access details for the remote PPP server to be called
Override DNS isavailableforPPPDevicessuchasmodems.OverrideDNSallowstheuseofalternateDNSserversfrom
thoseprovidedbyyourISP.Forexample,analternativeDNSmayberequiredforOpenDNSusedforcontentltering.
• ToenableOverride DNS,checktheOverridereturnedDNSServersbox.EntertheIPoftheDNSserversintothespaces
provided.