User Manual

SystemDescription
16
Base Station Master unit Gateway (BGW)
BaseStationMasterunitGateway(BGW)isaself‐poweredLinuxbasedserver.ItassignsIPaddressestoallthe
modulesinthesystem,includingtheRemoteUnitsaswellastheircomponents.ModulesinaMasterUnitwill
inherittheirIPaddressesviaDHCPleasesandbywayofinheringtheMA
Caddressesfromthebackplanewecan
ensurethatanewmoduleinsertedintherackreceivesthe sameaddressastheoneitisreplacing,withoutanyneed
ofmanualconfiguration.
FeaturesoftheBG
W:
We
binterfaceconfiguration
Automaticdetectionofmodules
AutomaticdetectionofRemoteUnits
Canhandlelargesystems
Functionsforstatistics
NorthboundcommunicationtoCGW
Includesfirewalltoprotectlocalnet
IstheportaltoyourMasterUnit
User‐providedcertificatebasedsecurityviaHTTPS
Figure 10 Base station master unit gateway
IftheBGWisreplacedtheRemoteUnitsmaynotshowupimmediately.Thisisduetotheleasetimeontheaddress
theyhave.Eventuallytheywillrequestanewaddressandwhenthisisdonetheywillshowup.
TheBGWistheun
itresponsibleforalarmhandlingandremoteforwardofalarmseitherbySMTPmai lforwardingor
bySNMPtraps.AMIBfileforyourSNMPsystemisavailablefromDeltaNodeuponrequestaswellasdocumentation
regardingSNMP.
TheBG
WcanalsolaunchVPNtunnelstoaremotesupervisioncentercalledtheCentralGateway(CGW).Thismakes
itpossibletomanagemultiplesystemsfromasingleplace.TheCGWwillbedescribedlaterinthismanual.
TheBG
WhastwoEthernetports.OneisconnectedtotheinternalnetworkintheMasterUnittoprovidethelocal
networkforallthemodules,theRemoteUnitsandeverythingelse.Italsoprovides,viathebuilt‐inswitchinthe
MasterUnit,awayoflocallyconfiguringthenetwork.Itpr
ovidesthewebinterfaceforallthesettingsofthesystem
aswellasmanyotherfunctions.Secondlythereisa“northbound”EthernetportthatallowstheBGWtoconnectto
theInternet,oraWAN/MANtypeoflargernetwork.Thismeansthatthesystemcanbemonitoredandmanaged
r
emotely.
AVi
rtualPrivateNetwork(VPN)tunnelcanbesetupfromtheBGWtoacentrallocationusingaCGW.TheCGWcan
handlealargenumberofsuchtunnels,providingacentralpointforsupervisingalltheinstallationsandcollecting
alarmsandstatisticsfromallthesystemsaswellascen
tralizedalarmmanagement.TheBGWcanactuallysetupa
secondtunnel,whichissometimesdonetotheDeltaNodemanagementcenterwherewecanhelpwith
managementandsupervision.Thisisaservicethatweprovideifneeded.