Zte ZXR10 8900 Series - Structure and Principle; Working Principle

Chapter3
StructureandPrinciple
TableofContents
WorkingPrinciple................................................................9
HardwareStructure...........................................................10
WorkingPrinciple
ZXR108900seriesswitchisalarge-capacityrackandmountable
Ethernetswitchthatimplementswire-speedLayer2/3switching
throughtwo-levelhardwareswitching.Level1switchingisbe-
tweenportsoflineinterfacecards;level2switchingbetweenline
interfacecardsisimplementedthroughcontrolswitchingboard.
ZXR108900seriesswitchhardwaredesigncomplieswithsystem
modulizationprinciplethatincludesthefollowingfourmodules:
�Controlmodule
�Switchingmodule
�Packetprocessingandinterfacemodule
�Powersupplymodule
ControlModuleThismoduleconsistsofmainprocessorandexternalfunctional
chipsthatimplementapplicationprocessinginthesystem.It
alsoprovidesvariousoperationalinterfacesincludingserialinter-
faceandEthernetinterfacetoperformdataoperationandmain-
tenance.
SwitchingModuleItprovidesmultiplexhigh-speedbi-directionalserialinterfaceto
implementwire-speeddataswitchbetweenlineinterfacecards.
PacketProcessing
andInterface
Module
InterfacemoduleistheexternalinterfaceofZXR108900series
switch.Itprovidesoneormultiplephysicalports.Differentline
interfacecardsimplementaccessofdifferentratesandtypes.
PowerSupply
Module
Itadopts220VACpowersupplyor–48VDCpowersupply.Italso
providespowerforotherpartsofthesystem.
ZXR108912/8908/8905systemprincipleisshowninFigure1.
CondentialandProprietaryInformationofZTECORPORATION9