Chapter2IPv6BasicConguration
�Multicastaddresses(FF02::2)ofalltherouterswithinthelink-
localrange
�Multicastaddresses(FF05::2)ofalltherouterswithinthesite-
localrange
�Multicastaddressofthesolicited-node(ifthesolicited-node
groupisaddedtoaninterfaceoftherouter)
�Multicastaddressofamulticastgroup(ifanymulticastgroup
isaddedtoaninterfaceoftherouter)
IPv6AddressAutoConfiguration
Technology
Thestateautocongurationemploystheplug-and-playmodeto
insertanodeintotheIPv6networkandstartsitupwithoutany
manualinterference.IPv6hastwodifferentmechanismstoshore
uptheplug-and-playnetworkconnection:
�Stateautoconguration
�Bootprotocol(BOOTstrapProtocol,BOOTP)
�Dynamichostcongurationprotocol(DHCP)
BothofthetwomechanismsallowIPnodestoobtaincong-
urationinformationfromaspecialBOOTPserverortheDHCP
server .Theseprotocolsusethestateautoconguration,that
is,aservermustretainandmanagethestateinformationof
eachnode.
�Statelessautoconguration
Apartfromstateautoconguration,IPv6alsoemploysakind
ofautocongurationservicenamedstatelessautocongura-
tion.RFC2462describestheIPv6statelessautoconguration.
Forthestatelessautoconguration,thelocallinkmustsupport
multicast.Networkinterfacemustbeabletosendandreceive
multicastpackets.Inthestatelessautocongurationprocess,
therelevantnodesmustmeetthefollowingrequirements.
�Anodeforautocongurationmustdetermineitsownlink-
localaddress.
�Authenticatethislink-localaddresstomakesurethatitis
uniqueinthelink.
�Thenodemustdeterminetheinformationtobecongured.
SuchinformationcanbetheIPaddressofthisnode,other
congurationinformation,orbothofthem.IncaseanIP
addressisneeded,thenodemustdeterminewhethertoob-
tainitthroughthestatelessautocongurationorthrough
thestateautoconguration.
Theprocedureisasfollows:
i.Inthestatelessautocongurationprocess,thehostadds
itsnetworkadapterMACaddressafterthe1111111010
prexofthelink-localaddresstocreatealink-localuni-
castaddress.
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