Zte ZXR10 T600

Chapter2IPv6BasicConguration
itcanusethisaddress.Thatis,itcanspecifythisad-
dressforthesourceaddressoftheIPv6packetwhenit
sendsoutarequestforcongurationinformation.This
addresscanbeexpressedas2000:0:0:0:0:0:0:1,or
expressedas2000::1.
–Loopbackaddress
InIPv4,theloopbackaddressisdenedas127.0.0.1.
Anypacketthatsendsaloopbackaddressmustbesent
toanetworkinterfacethroughprotocolstack,insteadof
beingsenttothenetworklink.Thenetworkinterface
itselfshallacceptthesepacketsinthesamewayas
itreceivespacketsfromexternalnodes,andtransmits
thembacktotheprotocolstack.
Theloopbackfunctionisusedforsoftwaretestandcon-
guration.Exceptthelowestbit,alltheotherbitsofan
IPv6loopbackaddressare0,thatis,aloopbackad-
dresscanbeexpressedas0:0:0:0:0:0:0:1or::1.
–IPv6addressembeddedwithIPv4address
IntheRFC2373,IPv6providestwokindsofaddresses.
OneistheIPv4-compatibleaddress,whichallowsthe
IPv6nodetoaccessIPv4nodesthatdonotsupport
IPv6..TheotheristheIPv4-mappingaddress,which
allowstheIPv6routertotransmitIPv6packetsover
theIPv4networkinthetunnelmode,wherethenodes
understandbothIPv4andIPv6.
Thehigh-order80bitsofthesetwokindsofaddresses
areallsettozeros,andthelow-order32bitscontain
theIPv4address.Ifthemiddle16bitsofanaddress
aresettoFFFF ,itindicatesthatthisaddressistheIPv6
addressmappingtoIPv4address.Table5
showsthe
addressstructuresofthesetwokindsofaddresses.
TABLE5STRUCTUREOFTHEIPV6ADDRESSEMBEDDEDWITH
IPV4ADDRESS
IPv4CompatibleAddress
801632
0000…………………………………………00000000
IPv4
address
IPv4imageaddress
801632
0000…………………………………………0000
FFFFIPv4
address
�LinkLocalAddressandSite-LocalAddress
UsingthenetworkModel10addresstotranslateIPv4net-
workaddressesprovidesanoptionfortheinstitutionsthat
donotwanttoapplyforgloballyuniqueIPv4networkad-
dresses.
CondentialandProprietaryInformationofZTECORPORATION9