Chapter24
DHCPv6Conguration
TableofContents
DHCPv6Overview...................................................................................................24-1
ConguringtheDHCPv6Server...............................................................................24-3
ConguringaDHCPv6Relay...................................................................................24-7
ConguringtheDHCPv6Client..............................................................................
24-10
DHCPv6CongurationExamples...........................................................................24-10
24.1DHCPv6Overview
DHCPv6Introduction
DHCPv6isanautomaticaddressallocationprotocoldenedbyIETFonIPv6networks.
ThroughDHCPv6,anetworknodecanrequestIPv6addressesandsomeother
congurationparametersfromaDHCPv6server.ThenetworknodealsocanobtainIPv6
addressesthroughothermethods,andjustobtainothernetworkparametersfromthe
DHCPv6server.
OnanIPv6network,aDHCPclientusesareservedmulticastaddressthatisvalidona
linktolocatetheDHCPv6server.Therefore,itisrequiredthattheclientandtheserver
shouldbeonthesamelink.However,insomeapplications,consideringmanagement,
economyandextension,itisrequiredthataclientcancommunicatewithaserverthatis
notonthesamelinkwiththeclient.ThisfunctionisimplementedbyaDHCPv6relay.A
DHCPv6relaycanrelayaccessrequestsfromotherclientsorrelays.
Figure24-1showstherelationshipsbetweenDHCPv6clients,relaysandaserver.
Figure24-1RelationAmongDHCPv6Client,RelayandServer
24-1
SJ-20140504150128-018|2014-05-10(R1.0)ZTEProprietaryandCondential