Chapter2
IPv6AddressConguration
TableofContents
IPv6AddressOverview..............................................................................................2-1
ConguringanIPv6Address....................................................................................2-13
IPv6AddressCongurationExample.......................................................................2-15
2.1IPv6AddressOverview
IPv6AddressIntroduction
InternetProtocol(IP)version6isanewIPprotocol,designedtoreplaceIPversion4,
theInternetprotocolthatispredominantlydeployedandextensivelyusedthroughoutthe
world.
However,theoriginaldesigndidnotanticipatethefollowingconditions:
lRecentexponentialgrowthoftheInternetandtheimpendingexhaustionoftheInternet
Protocolversion4(IPv4)addressspace.
lGrowthoftheInternetandtheabilityofInternetbackbonerouterstomaintainlarge
routingtables.
lNeedforsimplerautocongurationandrenumbering.
lRequirementforsecurityattheIPlevel.
lNeedforbettersupporttoreal-timedeliveryofdata,alsocalledQualityofService
(QoS).
Note:
FeaturessuchasIPSecurityProtocol(IPSec)andQoShavebeenspeciedforboth
versionsofIP .
InternetProtocolVersion6(IPv6)featuresahugeaddresscapacityupto128bits,which
isdescribedasfollows:
lItprovides2128differentIPv6addresses,thatis,the
numberoftheallocableaddressesaroundtheworldis
340,282,366,920,938,463,463,374,607,431,768,211,456.
lItprovides2.2*10
20
addressespercm
2
ifaddressesareallocatedbasedonground
area.
2-1
SJ-20140504150128-018|2014-05-10(R1.0)ZTEProprietaryandCondential