Zte ZXR10 M6000 Series - Page 55

AppendixADocumentTerminology
SFUSwitchFabricUnitTheSFUofZXR10M6000-8adopts2+1redundancy
backup.TheSFUofZXR10M6000-16&T8000adopts3+1
redundancybackup.SeveralSFUscanworkatthesame
time.WhenaSFUisbrokenorpluggedout,interface
accessandprocessingabilityarenotaffected.According
tothedemandofrackcascadeconnection,SFUcanbe
dividedintonon-cascadeconnectionSFUandcascade
connectionSFU.
SRUSwitchRouteUnitTheSRUofZXR10iscomposedof1MPUand1SFU.
SRUimplementsswitch/route/managementfunctionality.
TCPTransmission
ControlProtocol
TCPenablestwohoststoestablishaconnectionand
exchangestreamsofdata.TCPguaranteesdeliveryof
dataandalsoguaranteesthatpacketswillbedeliveredin
thesameorderinwhichtheyweresent.
TACACS+TerminalAccess
ControllerAccess
ControlSystemPlus
Anauthenticationprotocolthatallowsaremoteaccess
servertoforwardanadministrator'slogonpasswordto
anauthenticationservertodeterminewhetheraccessis
allowedtoagivensystem.
URPFUnicastReverse
PathForwarding
NetworkadministratorscanuseUnicastReversePath
Forwarding(UnicastRPF)tohelplimitthemalicioustrafc
onanenterprisenetwork.Thissecurityfeatureworksby
enablingaroutertoverifythereachabilityofthesource
addressinpacketsbeingforwarded.Thiscapabilitycan
limittheappearanceofspoofedaddressesonanetwork.If
thesourceIPaddressisnotvalid,thepacketisdiscarded.
UDPUserDatagram
Protocol
UDPistransportlayerprotocolwhichdonotguarantee
deliveryofdata
VPNVirtualPrivate
Network
Awaytoprovidesecureanddedicatedcommunications
betweenagroupofprivateserversoverpublicInternet.
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SJ-20110815105844-030|2011/08/19（R1.6）ZTECORPORATION