DHCPv6使用前缀授权功能配置示例

ContentsIntroductionPrerequisitesRequirementsComponentsUsedConfigureNetworkDiagram配置VerifyTroubleshootRelatedInformationIntroduction本文描述如何使用前缀授权功能为了配置DHCPv6(IPv6的动态主机配置协议)服务器和客户端.
此功能可以用于管理链路、子网和站点地址更改.
在此示例配置中,名为DHCPv6服务器的路由器有被启用的前缀授权功能并且作为一个委派的路由器.
委派的路由器自动化分配前缀的进程到请求的路由器(即DHCP客户端).
一旦服务器分配了前缀给客户端,被连接到区域网的接口(LAN)使用接收的前缀块,请求的路由器有一个IPv6地址.
请求的路由器然后宣布在路由器通告消息的此地址.
客户端路由器(即本地网络的路由器)能使用自动设定选项由DHCP客户端拉从做通告的路由器通告消息的全局IP地址.
PrerequisitesRequirements尝试进行此配置之前,请确保满足以下要求:IPv6寻址和基本连通性知识q实现IPv6的DHCP知识qComponentsUsedThisdocumentisnotrestrictedtospecificsoftwareandhardwareversions.
在本文的配置根据在CiscoIOS软件版本软件12.
4(15)T13的Cisco3700系列路由器.
Configure本部分提供有关如何配置本文档所述功能的信息.
NetworkDiagram本文档使用以下网络设置:配置本文档使用以下配置:DHCP服务器配置qDHCP客户端配置q本地LAN客户端1和2配置q这是展示在配置在CiscoIOS路由器的DHCPv6涉及的步骤可用在Cisco支持公共的视频的一条链路:DHCPv6的配置在CiscoIOS的DHCPSERVER#showrunning-configversion12.
4!
hostnameDHCPSERVER!
ipv6unicast-routingipv6dhcppooldhcpv6!
---TheDHCPpoolisnamed"dhcpv6.
"!
prefix-delegationpooldhcpv6-pool1lifetime1800600!
---Theprefixdelegationpoolnameis"dhcpv6-pool1.
"!
dns-server2001:DB8:3000:3000::42domain-nameexample.
com!
interfaceSerial0/0noipaddressipv6address2010:AB8:0:1::1/64ipv6enableipv6dhcpserverdhcpv6clockrate2000000!
ipv6localpooldhcpv6-pool12001:DB8:1200::/4048!
---Theprefixpoolnameddhcpv6-pool1hasaprefixoflength!
---/40fromwhichitwilldelegate(sub)prefixesoflength/48.
!
endDHCPCLIENT#showrunning-configversion12.
4!
hostnameDHCPCLIENT!
ipv6unicast-routing!
interfaceSerial0/0noipaddressipv6addressautoconfigdefault!
---Theautoconfigdefaultaddsastaticipv6!
---defaultroutepointingtoupstreamDHCPserver.
!
ipv6enableipv6dhcpclientpdprefix-from-provider!
---TheDHCPclientprefixdelegationis!
---giventhenameprefix-from-provider.
!
clockrate2000000!
interfaceFastEthernet0/0noipaddressduplexautospeedautoipv6addressprefix-from-provider::1:0:0:0:1/64!
---Thefirst48bitsareimportedfromthedelegated!
---prefix(2001:db8:1200)andthe::/64istheclient!
---identifierthatgivestheinterfaceFa0/1the!
---globalIPv6address2001:DB8:1200:1::1/64.
!
ipv6enable!
interfaceFastEthernet0/1noipaddressduplexautospeedautoipv6enableipv6addressprefix-from-provider::1/64!
---Similarly,theglobalIPv6address!
---forfa0/1is2001:DB8:1200::1.
!
end本地LAN配置Client1Client2CLIENT1#showrunning-configversion12.
4!
hostnameCLIENT1!
ipv6unicast-routing!
interfaceFastEthernet0/0noipaddressduplexautospeedautoipv6addressautoconfig!
---TheclientscanrunautoconfigtogetanIPv6!
---addressdependingontherouteradvertisements!
---sentbytheDHCPclient(requestingrouter).
!
ipv6enable!
endCLIENT2#showrunning-configversion12.
4!
hostnameCLIENT2!
ipv6unicast-routing!
interfaceFastEthernet0/0noipaddressduplexautospeedautoipv6addressautoconfigipv6enable!
endVerify请使用本部分描述的命令来验证配置.
Note:为了保存空间,在此部分换行的若干输出到新的一行.
在DHCP服务器上在此部分的输出表示,活动客户端的数量是1并且显示其他配置参数信息,例如域名服务器地址和首选生活时间信息.
显示ipv6dhcppoolDHCPv6pool:dhcpv6Prefixpool:dhcpv6-pool1preferredlifetime600,validlifetime1800DNSserver:2001:DB8:3000:3000::42Domainname:example.
comActiveclients:1显示IPv6dhcp约束命令提供关于客户端的信息,包括他们的DUIDs、IAPDs、前缀和首选和有效寿命.
显示IPv6dhcp捆绑Client:FE80::C002:FFF:FEB4:0DUID:00030001C2020FB40000Username:unassignedInterface:Serial0/0IAPD:IAID0x00060001,T1300,T2480Prefix:2001:DB8:1200::/48preferredlifetime600,validlifetime1800expiresatMar02200201:26AM(1707seconds)在DHCP客户端显示IPv6dhcpinterface命令表示,接口S0/0在客户端模式被配置并且显示从DHCP服务器收到DNS服务器地址和域名的详细资料.
显示IPv6dhcpinterfaceSerial0/0isinclientmodeStateisOPENRenewwillbesentin00:04:37Listofknownservers:Reachableviaaddress:FE80::C003:FFF:FEB4:0DUID:00030001C2030FB40000Preference:0Configurationparameters:IAPD:IAID0x00060001,T1300,T2480Prefix:2001:DB8:1200::/48preferredlifetime600,validlifetime1800expiresatMar01200210:59AM(1777seconds)DNSserver:2001:DB8:3000:3000::42Domainname:example.
comInformationrefreshtime:0Prefixname:prefix-from-providerRapid-Commit:disabled显示IPv6interface命令在快速以太网接口Fa0/0和Fa0/1提供此输出:显示IPv6intfa0/0显示IPv6intfa0/1FastEthernet0/0isup,lineprotocolisupIPv6isenabled,link-localaddressisFE80::C002:FFF:FEB4:0NoVirtuallink-localaddress(es):Globalunicastaddress(es):2001:DB8:1200:1::1,subnetis2001:DB8:1200:1::/64[CAL/PRE]validlifetime1535preferredlifetime335!
---Outputomitted.
FastEthernet0/1isup,lineprotocolisupIPv6isenabled,link-localaddressisFE80::C002:FFF:FEB4:1NoVirtuallink-localaddress(es):Globalunicastaddress(es):2001:DB8:1200::1,subnetis2001:DB8:1200::/64[CAL/PRE]validlifetime1712preferredlifetime512!
---Outputomitted.
显示IPv6一般前缀命令通过前缀授权验证所有接收的前缀(一般前缀)从DHCP服务器.