Radwin Transportation FiberinMotion - On-Board Network

FinMDeploymentGuide Release4.5.10 3‐3
On‐boardNetwork NetworkGuidelines
Figure3‐1:Typicalwaysidenetworkarrangement
3.4On‐boardNetwork
• Ideally,aTransportationMobileradioUnit(TMU)isdeployedateachendofthetrain.It
isconnected,viaaPoE,tothetrain'sinternalnetwork(Trainnetworkisresponsibilityof
systemintegrator).L2connectivityisrequiredbetweenbothTMUs
• TMUsandtrainroutershouldbeonthesameIPsubnet
• Trainequipment(APs,CCTVcameras,PISdevicesetc.)shouldbeonadifferentsubnet
fromthatoftheTMU
• Allofthetrain'strafficissentviaanon‐boardrouter(providedbythesystemintegra‐
torI)totheactiveTMUprovidingthehighestthroughput(whichTMUisconsidered
“active”isautomaticallydeterminedbythesystem).
• Theon‐boardtrainnetworkshouldsupportVLANs
• Networkswitchesshouldappropriatelyhandlethesystem'srelearningframes.These
framesareVLANtagged(802.1Q)andswitchshouldforwardtherelearningtrafficand
updatetheFIB(ForwardingInformationBase)
• IEEE802.3azshouldbedisabledonallswitches
• Spanningtreebetweentrainandtracksideisnotsupportedandmustbedisabledon
switchportsconnectedtotheRADWINradios.