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Chapter7

MPFU

TheManagementandPacketForwardingUnit(MPFU)isthecontrolnodeoftherouter.

TheMPFUforwardspacketsandmanagesandmaintainstheentiredevice.

TheMPFUconsistsofthepacketforwardingmodule,managementandcontrolmodule,

clockprocessingmodule,andalarmmonitoringmodule.Itforwardspackets,andmanages

thesystemclocksource,controlplane,systemmaintenanceplaneandenvironmental

monitoringplane.

lThepacketforwardingmoduleclassiesandforwardsthepacketsthattheline

interfaceboardsreceiveandcontrolsthepackettrafc.

lThemanagementandcontrolmoduleprovidesthefollowingfunctions:

àProcessesprotocolsandsignalingmessagestocontrolandnotifythesystem

status.Therouteprotocolcontrollayerandthecongurationandoperationlayer

areseparatedtoenhancethecontrollayerstabilityandequipmentmanageability.

àConguresandmaintainsthesystemstatus.Itprovidesthesystemdata

congurationandupgradefunctionsandsystemoperationlogs.Itsupportstwo

typesofmanagementinterfaces:serialportandRJ45port.

lThealarmmonitoringmodulemonitorstheoperationconditionsoftheboards,power

supplymodules,andfanmodulesandgeneratesalarmswhennecessary.Itprovides

auser-friendlyman-machineinterfacethroughtheCLIorSNMPnetworkmanagement

system.

TheMPFUoftheZXR102800-3E,ZXR101800-2EorZXR101800-2Sisintegratedinto

thechassisandcannotberemoved.

TheMPFUboardsoftheZXR102800-4andZXR103800-8canbedividedintothree

types:RAC-2838-MPFU-A,RAC-2838-MPFU-B,andRAC-2838-MPFU-C.

TableofContents

RAC-2838-MPFU-A....................................................................................................7-1

RAC-2838-MPFU-B/RAC-2838-MPFU-C...................................................................7-3

7.1RAC-2838-MPFU-A

Overview

RAC-2838-MPFU-AisthetypeAMPFUoftheZXR102800-4andZXR103800-8.The

MPFUprovidesthefollowingfunctions:

lSupportshotswappingwithamodularstructure.

7-1

SJ-20150204153047-004|2015-03-30(R1.0)ZTEProprietaryandCondential

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