DHCPv6学习总结

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,DHCP,v6,学习总结（,1,）,小结,DHCPv6,协议报文详解,DHCPv6,协议报文交互过程,有状态地址配置,无状态地址配置,无状态地址自动配置,A,有状态地址自动配置,B,获取,IPV6,地址的方式,DHCPv6,DHCPV6,协议,RA,s3(config-if-vlan1)#ipv6 address 2001:1/64,s3(config-if-vlan1)#no ipv6 nd suppress-ra,PC,需支持,IPv6,协议栈,2001:,MAC,后,24,位,MAC,前,24,位,FE:FF,S3,MAC,前,24,位的第,7,位置,1,（从左数）,无状态地址自动配置,1,PC,除了通过自身的,MAC,地址生成,IPv6,地址，也可能会同,时生成一个前缀为,2001:/64,的,EUI-64,格式的,IPv6,地址,生成,IPv6,地址,有状态地址自动配置即,DHCPv6,协议，通过,DHCPv6,协议报文的交互完成客户端，服务器，中继代理三者之间的通信 ，已达到,IPv6,地址及相关信息的分配和维护。,有状态地址自动配置,1,下图中描述了,DHCPv6,协议报文的交互过程,图,1,：,DHCPv6,客户端,-,服务器交互示意图,So,Re,Ry,Rw,Ry,Rs,Ry,So,Ad,Ad,比较收到的,Advertise,报文中,preference,字段值，将优先级大的,Advertise,报文中各选项值填入到响应报文,Request,中（,Request,报文的目的,IPv6,地址为,ff02:1:2,，,本例中取,Server B,的优先级大）,向该客户端所在链路发送,Solicit,报文,（目的,IPv6,地址：,ff02:1:2),以查询本地链路上可获得的,DHCPv6,服务器。报文中包含客户端想要获取的服务器,DUID,、服务器优先级、,DNS,、域名以及,IPv6,地址选项字段,对收到的,Solicit,报文进行响应，发送,Advertise,报文（目的,IPv6,地址为收到,Solicit,报文的源,IPv6,地址），该报文对,Solicit,报文中希望获取的选项字段做相应回应,收到的,Request,报文,检查,server identifier,字段，其,DUID,是自己的,DUID,，,进行响应,:,发送,reply,报文（目的,IPv6,地址为收到,Request,报文的源,IPv6,地址），该报文相当于一个确认报文，告诉客户端其申请的地址合法有效，可以使用,Re,收到的,Request,报文,检查,server identifier,字段，其,DUID,不是自己的,DUID,，不,进行响应,处理方法与,DHCP Server B,相同,当客户端申请到的,IPv6,地址经过优先生存周期的一半时，会发送,Renew,报文，以获取该,IPv6,地址持续使用权,收到的,Renew,报文后，,检查其中的,IA_NA,选项包含的地址信息是否符合服务器地址绑定表记录的该客户端信息,，不符合则发送,Reply,报文告知客户端：,NoBinding,，符合但是该地址不再适合客户端则发送,Reply,报文告知客户端该地址不可用（将生存周期置,0,），符合且可用则发送,Reply,报文更新该地址的生存周期，同时更新绑定信息。,当客户端不再使用申请到的,IPv6,地址后，发送,Release,报文,收到,Release,报文后，,检查其中的,IA_NA,选项包含的地址信息是否符合服务器地址绑定表记录的该客户端信息 ，符合则删除该绑定信息并发送,Reply,报文通知客户端该地址的绑定信息已被删除,IPv6,地址的申请,1,IPv6,地址的维护,2,IPv6,地址的释放,3,DHCPv6,协议报文详解（通过实例配置进行学习）,RA,s3(config)#ipv6 enable,s3(config)#service dhcpv6,s3(config)#ipv6 dhcp pool zhangpengi,s3(dhcpv6-zhangpengi-config)#network-address 2001:1 64,s3(dhcpv6-zhangpengi-config)#dns-server 2200:100,s3(dhcpv6-zhangpengi-config)# domain-name ,s3(dhcpv6-zhangpengi-config)# lifetime 200 100,s3(dhcpv6-zhangpengi-config)#excluded-address 2001:1,s3(config-if-vlan1)#ipv6 address 2001:1/64,s3(config-if-vlan1)#no ipv6 nd suppress-ra,s3(config-if-vlan1)#ipv6 nd managed-config-flag,s3(config-if-vlan1)#ipv6 nd other-config-flag,s3(config-if-vlan1)#ipv6 dhcp server zhangpengi,s3#debug ipv6 dhcp server event,s3#debug ipv6 dhcp server packet,S3,Vista,系统,vlan1,交换机配置,IPv6,地址申请,客户端收到,RA,报文后，发现,managed-config-flag,和,other-config-flag,两个标志位为,1,，则发送,Solicit,报文通过有状态地址自动配置获取,IPv6,地址,Solicit,报文解析,vlan1,So,%Jan 09 17:13:04 2009 DHCPv6 PACKET: received SOLICIT from fe80:45fe:bdca:d4f6:4f67 on interface Vlan1,%Jan 09 17:13:04 2009 DHCPv6 DETAILS: contents of SOLICIT packet,%Jan 09 17:13:04 2009 transaction-ID: 0x00c04672,%Jan 09 17:13:04 2009 elapsed time option(8), option-len 2,%Jan 09 17:13:04 2009 elapsed time: 0,%Jan 09 17:13:04 2009 client ID option(1), option-len 14,%Jan 09 17:13:04 2009 DUID: 00:01:00:01:0f:fa:54:44:00:50:ba:f2:a4:e5,%Jan 09 17:13:04 2009 identity association option(3), option-len 12,%Jan 09 17:13:04 2009 IANA: 0x0e001d92, T1 0, T2 0,%Jan 09 17:13:04 2009 vendor class option(16), option-len 14,%Jan 09 17:13:04 2009 enterprise number : 311,%Jan 09 17:13:04 2009 option request option(6), option-len 6,%Jan 09 17:13:04 2009 requested-option: domain search list,%Jan 09 17:13:04 2009 requested-option: DNS server list,%Jan 09 17:13:04 2009 requested-option: vendor specific info,IPv6,地址申请,Ad,S3,vlan1,Adertise,报文解析,DHCPv6 PACKET: sending ADVERTISE to fe80:45fe:bdca:d4f6:4f67,on interface Vlan1,%Jan 09 17:13:04 2009 DHCPv6 DETAILS: contents of ADVERTISE packet,%Jan 09 17:13:04 2009 transaction-ID: 0x00c04672,%Jan 09 17:13:04 2009 client ID option(1), option-len 14,%Jan 09 17:13:04 2009 DUID: 00:01:00:01:0f:fa:54:44:00:50:ba:f2:a4:e5,%Jan 09 17:13:04 2009 server ID option(2), option-len 14,%Jan 09 17:13:04 2009 DUID: 00:01:00:01:49:67:2f:04:00:03:0f:10:16:1e,%Jan 09 17:13:04 2009 identity association option(3), option-len 40,%Jan 09 17:13:04 2009 IANA: 0x0e001d92, T1 43200, T2 69120,%Jan 09 17:13:04 2009 IA address option(5), option-len 24,%Jan 09 17:13:04 2009 IANA address: 2001:2, preferred-lifetime: 100,valid-lifetime: 200,%Jan 09 17:13:04 2009 preference option(7), option-len 1,%Jan 09 17:13:04 2009 preference: 0,%Jan 09 17:13:04 2009 DNS server list option(23), option-len 16,%Jan 09 17:13:04 2009 DNS server list: 2200:100,%Jan 09 17:13:04 2009 domain search list option(24), option-len 15,%Jan 09 17:13:04 2009 domain search list: .,%Jan 09 17:13:04 2009 vendor specific info option(17), option-len 4,%Jan 09 17:13:04 2009 enterprise number : 6339,IPv6,地址申请,Re,S3,vlan1,Request,报文解析,%Jan 09 17:13:05 2009 DHCPv6 PACKET: received REQUEST from,fe80:45fe:bdca:d4f6:4f67 on interface Vlan1,%Jan 09 17:13:05 2009 DHCPv6 DETAILS: contents of REQUEST packet,%Jan 09 17:13:05 2009 transaction-ID: 0x00c04672,%Jan 09 17:13:05 2009 elapsed time option(8), option-len 2,%Jan 09 17:13:05 2009 elapsed time: 0,%Jan 09 17:13:05 2009 client ID option(1), option-len 14,%Jan 09 17:13:05 2009 DUID: 00:01:00:01:0f:fa:54:44:00:50:ba:f2:a4:e5,%Jan 09 17:13:05 2009 server ID option(2), option-len 14,%Jan 09 17:13:05 2009 DUID: 00:01:00:01:49:67:2f:04:00:03:0f:10:16:1e,%Jan 09 17:13:05 2009 identity association option(3), option-len 40,%Jan 09 17:13:05 2009 IANA: 0x0e001d92, T1 50, T2 80,%Jan 09 17:13:05 2009 IA address option(5), option-len 24,%Jan 09 17:13:05 2009 IANA address: 2001:2, preferred-lifetime: 100,valid-lifetime: 200,%Jan 09 17:13:05 2009 vendor class option(16), option-len 14,%Jan 09 17:13:05 2009 enterprise number : 311,%Jan 09 17:13:05 2009 option request option(6), option-len 6,%Jan 09 17:13:05 2009 requested-option: domain search list,%Jan 09 17:13:05 2009 requested-option: DNS server list,%Jan 09 17:13:05 2009 requested-option: vendor specific info,IPv6,地址申请,Ry,S3,vlan1,Reply,报文解析,%Jan 12 11:03:33 2009 DHCPv6 PACKET: sending REPLY to,fe80:45fe:bdca:d4f6:4f67 on interface Vlan1,%Jan 12 11:03:33 2009 DHCPv6 DETAILS: contents of REPLY packet,%Jan 12 11:03:33 2009 transaction-ID: 0x0040032f,%Jan 12 11:03:33 2009 client ID option(1), option-len 14,%Jan 12 11:03:33 2009 DUID: 00:01:00:01:0f:fa:54:44:00:50:ba:f2:a4:e5,%Jan 12 11:03:33 2009 server ID option(2), option-len 14,%Jan 12 11:03:33 2009 DUID: 00:01:00:01:49:67:2f:04:00:03:0f:10:16:1e,%Jan 12 11:03:33 2009 identity association option(3), option-len 40,%Jan 12 11:03:33 2009 IANA: 0x0e001d92, T1 50, T2 80,%Jan 12 11:03:33 2009 IA address option(5), option-len 24,%Jan 12 11:03:33 2009 IANA address: 2001:2, preferred-lifetime: 100,valid-lifetime: 200,%Jan 12 11:03:33 2009 DNS server list option(23), option-len 16,%Jan 12 11:03:33 2009 DNS server list: 2200:100,%Jan 12 11:03:33 2009 domain search list option(24), option-len 15,%Jan 12 11:03:33 2009 domain search list: .,%Jan 12 11:03:33 2009 vendor specific info option(17), option-len 4,%Jan 12 11:03:33 2009 enterprise number : 6339,IPv6,地址申请,IPv6,地址维护,当客户端申请到,IPv6,地址后，服务器上会有该地址的绑定信息，绑定信息详细记录了客户端的,DUID,、地址和地址生存周期。服务器通过对地址绑定表的维护来管理,IPv6,地址。,下面介绍服务器对,IPv6,地址的维护过程：,IPv6,地址维护,S3,vlan1,vlan1,获取到了,IPv6,地址,2001:2/64,客户端对刚申请到的,IPv6,地址会做重复地址检测即发送,Ns,报文，相当于,IPv4,的免费,Arp,Ns,Ns,检查,Ns,报文中的目的,IPv6,地址,发现与自己的,IPv6,地址相同,则发送响应报文,Na,PC2,2001:2/64,PC1,Na,Na,IPv6,地址维护,De,S3,vlan1,Decline,报文解析,%Jan 14 15:16:30 2009 DHCPv6 PACKET: received DECLINE,from fe80:200:47ff:fe5c:4147 on interface Vlan1,%Jan 14 15:16:30 2009 DHCPv6 DETAILS: contents of DECLINE packet,%Jan 14 15:16:30 2009 transaction-ID: 0x00dc22f5,%Jan 14 15:16:30 2009 elapsed time option(8), option-len 2,%Jan 14 15:16:30 2009 elapsed time: 0,%Jan 14 15:16:30 2009 client ID option(1), option-len 14,%Jan 14 15:16:30 2009 DUID:,00:01:00:06:10:38:e8:9a:00:00:47:5c:41:47 00:01:00:06:10:38:e8:9a:00:00:47:5c:41:47,%Jan 14 15:16:30 2009 server ID option(2), option-len 14,%Jan 14 15:16:30 2009 DUID: 00:01:00:01:49:6d:ff:2b:00:03:0f:10:16:1e,%Jan 14 15:16:30 2009 identity association option(3), option-len 40,%Jan 14 15:16:30 2009 IANA: 0x00000001, T1 50, T2 80,%Jan 14 15:16:30 2009 IA address option(5), option-len 24,%Jan 14 15:16:30 2009 IANA address: 2001:2, preferred-lifetime: 100,valid-lifetime: 200,客户端收到响应的,Na,报文后，知道在链路中存在冲突地址，则发送,Decline,报文（目的,IPv6,地址为,ff02:1:2),，告知服务器报文中的地址已经被链路上的其它客户使用,IPv6,地址维护,Ry,S3,vlan1,Reply,报文解析,%Jan 14 15:16:30 2009 DHCPv6 PACKET: sending REPLY to,fe80:200:47ff:fe5c:4147 on interface Vlan1,%Jan 14 15:16:30 2009 DHCPv6 DETAILS: contents of REPLY packet,%Jan 14 15:16:30 2009 transaction-ID: 0x00f5978f,%Jan 14 15:16:30 2009 client ID option(1), option-len 14,%Jan 14 15:16:30 2009 DUID: 00:01:00:06:10:38:e8:9a:00:00:47:5c:41:47,%Jan 14 15:16:30 2009 server ID option(2), option-len 14,%Jan 14 15:16:30 2009 DUID: 00:01:00:01:49:6d:ff:2b:00:03:0f:10:16:1e,%Jan 14 15:16:30 2009 identity association option(3), option-len 40,%Jan 14 15:16:30 2009 status code option(13), option-len 2,%Jan 14 15:16:30 2009 status-code: success,服务器收到,Decline,报文后，查找地址绑定表，如果有相应地址绑定信息，则响应,Reply,报文,(,status-code,值为,success,),，如果查找不到该地址绑定信息，则响应,Reply,报文的,status-code,值为,NoBinding,s3#show ipv6 dhcp binding,Client: iatype IANA, iaid 0x00000001,DUID: 00:01:00:06:10:38:e8:9a:00:00:47:5c:41:47,IANA leased address: 2001:2,Preferred lifetime 100 seconds, valid lifetime 200 seconds,Lease obtained at %Jan 14 17:38:58 2009,Lease expires at %Jan 14 17:42:18 2009 (191 seconds left),服务器除了回应,Reply,报文外，对回应,success,的,IPv6,地址，首先会删除该地址绑定信息，然后记录在,conflict,地址表中，以后服务器就再也不会将该地址分配出去，除非手动清空该,conflict,地址表。,s3#show ipv6 dhcp binding,s3#show ipv6 dhcp conflict,Conflicted IPv6 addresses:,2001:2,Rw,S3,vlan1,Renew,报文解析,%Jan 14 15:21:57 2009 DHCPv6 PACKET: received RENEW from,fe80:200:47ff:fe5c:4147 on interface,Vlan,1,%Jan 14 15:21:57 2009 DHCPv6 DETAILS: contents of RENEW packet,%Jan 14 15:21:57 2009 transaction-ID: 0x00f5978f,%Jan 14 15:21:57 2009 elapsed time option(8), option-len 2,%Jan 14 15:21:57 2009 elapsed time: 0,%Jan 14 15:21:57 2009 client ID option(1), option-len 14,%Jan 14 15:21:57 2009 DUID:,00:01:00:06:10:38:e8:9a:00:00:47:5c:41:47,%Jan 14 15:21:57 2009 server ID option(2), option-len 14,%Jan 14 15:21:57 2009 DUID: 00:01:00:01:49:6d:ff:2b:00:03:0f:10:16:1e,%Jan 14 15:21:57 2009 option request option(6), option-len 8,%Jan 14 15:21:57 2009 requested-option: server ID,%Jan 14 15:21:57 2009 requested-option: preference,%Jan 14 15:21:57 2009 requested-option: domain search list,%Jan 14 15:21:57 2009 requested-option: DNS server list,%Jan 14 15:21:57 2009 identity association option(3), option-len 40,%Jan 14 15:21:57 2009 IANA: 0x475c4147, T1 50, T2 80,%Jan 14 15:21:57 2009 IA address option(5), option-len 24,%Jan 14 15:21:57 2009 IANA address: 20,01,:,2, preferred-lifetime: 100,valid-lifetime: 200,如果客户端做重复地址检测时没有收到响应，则当时间经过,T1,值即优先生存周期的一半后，客户端会发送,Renew,报文以更新已获取的,IPv6,地址的生存周期,Ry,S3,vlan1,Reply,报文解析,%Jan 14 15:21:57 2009 DHCPv6 PACKET: sending REPLY to,fe80:200:47ff:fe5c:4147 on interface Vlan1,%Jan 14 15:21:57 2009 DHCPv6 DETAILS: contents of REPLY packet,%Jan 14 15:21:57 2009 transaction-ID: 0x00f5978f,%Jan 14 15:21:57 2009 client ID option(1), option-len 14,%Jan 14 15:21:57 2009 DUID: 00:01:00:06:10:38:e8:9a:00:00:47:5c:41:47,%Jan 14 15:21:57 2009 server ID option(2), option-len 14,%Jan 14 15:21:57 2009 DUID: 00:01:00:01:49:6d:ff:2b:00:03:0f:10:16:1e,%Jan 14 15:21:57 2009 identity association option(3), option-len 40,%Jan 14 15:21:57 2009 IANA: 0x475c4147, T1 50, T2 80,%Jan 14 15:21:57 2009 IA address option(5), option-len 24,%Jan 14 15:21:57 2009 IANA address: 2001:2, preferred-lifetime: 100,valid-lifetime: 200,%Jan 14 15:21:57 2009 DNS server list option(23), option-len 16,%Jan 14 15:21:57 2009 DNS server list: 2200:100,%Jan 14 15:21:57 2009 domain search list option(24), option-len 15,%Jan 14 15:21:57 2009 domain search list: .,s3#show ipv6 dhcp binding,Client: iatype IANA, iaid 0x00000001,DUID: 00:01:00:06:10:38:e8:9a:00:00:47:5c:41:47,IANA leased address: 2001:2,Preferred lifetime 100 seconds, valid lifetime 200 seconds,Lease obtained at %Jan 14 17:38:58 2009,Lease expires at %Jan 14 17:42:18 2009 (191 seconds left),1,、,Renew,报文中的地址符合地址绑定信息且可用,服务器收到,Renew,报文后，检查地址绑定表，发现有对应的地址绑定信息，则发送,Reply,报文更新该地址的生存周期和地址绑定信息中时间值,s3#show ipv6 dhcp binding,Client: iatype IANA, iaid 0x00000001,DUID: 00:01:00:06:10:38:e8:9a:00:00:47:5c:41:47,IANA leased address: 2001:2,Preferred lifetime 100 seconds, valid lifetime 200 seconds,Lease obtained at %Jan 14 17:38:58 2009,Lease expires at %Jan 14 17:42:18 2009 (198 seconds left),2,、,Renew,报文中的地址在地址绑定信息中不存在,Ry,S3,vlan1,Reply,报文解析,s3#clear ipv6 dhcp binding,s3#show ipv6 dhcp binding,当再次收到,Renew,报文后，服务器查找地址绑定表，没有发现相应的地址表项，则发送如下格式的,Reply,报文（,status code,值为,no binding,）,%Jan 14 15:26:51 2009 DHCPv6 PACKET: sending REPLY to,fe80:200:47ff:fe5c:4147 on interface Vlan1,%Jan 14 15:26:51 2009 DHCPv6 DETAILS: contents of REPLY packet,%Jan 14 15:26:51 2009 transaction-ID: 0x00001750,%Jan 14 15:26:51 2009 client ID option(1), option-len 14,%Jan 14 15:26:51 2009 DUID: 00:01:00:06:10:38:e8:9a:00:00:47:5c:41:47,%Jan 14 15:26:51 2009 server ID option(2), option-len 14,%Jan 14 15:26:51 2009 DUID: 00:01:00:01:49:6d:ff:2b:00:03:0f:10:16:1e,%Jan 14 15:26:51 2009 identity association option(3), option-len 18,%Jan 14 15:26:51 2009 IANA: 0x475c4147, T1 0, T2 0,%Jan 14 15:26:51 2009 status code option(13), option-len 2,%Jan 14 15:26:51 2009 status code: no binding,%Jan 14 15:26:51 2009 DNS server list option(23), option-len 16,%Jan 14 15:26:51 2009 DNS server list: 2200:100,%Jan 14 15:26:51 2009 domain search list option(24), option-len 15,%Jan 14 15:26:51 2009 domain search list: .,3,、,Renew,报文中的地址在地址绑定信息中存在但不适用于当前接口,Ry,S3,vlan1,Reply,报文解析,在收到客户端的,Renew,报文之前，改变接口,IPv6,地址,s3(config-if-vlan1)#no ipv6 address 2001:1/64,s3(config-if-vlan1)#ipv6 address 2003:1/64,重新申请,IPv6,地址,当再次收到,Renew,报文后，服务器查找地址绑定表，发现有对应地址信息，但是发现与本地接口地址不在同一网段，在,Reply,报文中告知客户端该地址不可用即把地址生存周期置,0,%Jan 14 18:04:39 2009 DHCPv6 PACKET: sending REPLY to,fe80:203:fff:fefe:3045 on interface Vlan1,%Jan 14 18:04:39 2009 DHCPv6 DETAILS: contents of REPLY packet,%Jan 14 18:04:39 2009 transaction-ID: 0x00003cc9,%Jan 14 18:04:39 2009 client ID option(1), option-len 14,%Jan 14 18:04:39 2009 DUID: 00:01:00:06:10:38:e8:9a:00:00:47:5c:41:47,%Jan 14 18:04:39 2009 server ID option(2), option-len 14,%Jan 14 18:04:39 2009 DUID: 00:01:00:01:49:6e:1d:07:00:03:0f:10:16:1e,%Jan 14 18:04:39 2009 identity association option(3), option-len 40,%Jan 14 18:04:39 2009 IANA: 0x00000001, T1 0, T2 0,%Jan 14 18:04:39 2009 IA address option(5), option-len 24,%Jan 14 18:04:39 2009 IANA address: 2001:2, preferred-lifetime: 0,valid-lifetime: 0,告知客户端地址,2001:2,生存周期为,0,即地址不可用,4,、,DHCPv6,服务器失效，客户端发送,Rebind,报文,当,DHCPv6,服务器由于某些原因失效时，客户端发送的,Renew,报文得不到响应，客户端肯定会重发,Renew,报文，一般重发,3,次，如果依旧没有得到回应，当到达,T2,时间段时，客户端会发送,Rebind,报文，该报文的功能相当于,Renew,报文，客户端希望,DHCPv6,服务器能在该时间段恢复正常并能响应自己的地址续约请求。,%Jan 14 15:27:31 2009 DHCPv6 PACKET: received REBIND from,fe80:200:47ff:fe5c:4147 on interface Vlan1,%Jan 14 15:27:31 2009 DHCPv6 DETAILS: contents of REBIND packet,%Jan 14 15:27:31 2009 transaction-ID: 0x00d90fe3,%Jan 14 15:27:31 2009 elapsed time option(8), option-len 2,%Jan 14 15:27:31 2009 elapsed time: 1000,%Jan 14 15:27:31 2009 option request option(6), option-len 8,%Jan 14 15:27:31 2009 requested-option: server ID,%Jan 14 15:27:31 2009 requested-option: preference,%Jan 14 15:27:31 2009 requested-option: domain search list,%Jan 14 15:27:31 2009 requested-option: DNS server list,%Jan 14 15:27:31 2009 client ID option(1), option-len 14,%Jan 14 15:27:31 2009 DUID: 00:01:00:06:10:38:e8:9a:00:00:47:5c:41:47,%Jan 14 15:27:31 2009 identity association option(3), option-len 40,%Jan 14 15:27:31 2009 IANA: 0x475c4147, T1 50, T2 80,%Jan 14 15:27:31 2009 IA address option(5), option-len 24,%Jan 14 15:27:31 2009 IANA address: 2001:2, preferred-lifetime: 100,valid-lifetime: 200,与,Renew,报文比较，内容基本一致,如果,DHCPv6,服务器在收到,Rebind,报文之前恢复了正常，其响应结果与对,Renew,报文的响应一致,Rl,S3,vlan1,Release,报文解析,%Jan 12 11:37:45 2009 DHCPv6 PACKET: received RELEASE,from fe80:45fe:bdca:d4f6:4f67 on interface Vlan32,%Jan 12 11:37:45 2009 DHCPv6 DETAILS: contents of RELEASE packet,%Jan 12 11:37:45 2009 transaction-ID: 0x00c7be43,%Jan 12 11:37:45 2009 elapsed time option(8), option-len 2,%Jan 12 11:37:45 2009 elapsed time: 0,%Jan 12 11:37:45 2009 client ID option(1), option-len 14,%Jan 12 11:37:45 2009 DUID: 00:01:00:06:10:38:e8:9a:00:03:0f:fe:30:45,%Jan 12 11:37:45 2009 server ID option(2), option-len 14,%Jan 12 11:37:45 2009 DUID: 00:01:00:01:49:67:2f:04:00:03:0f:10:16:1e,%Jan 12 11:37:45 2009 identity association option(3), option-len 40,%Jan 12 11:37:45 2009 IANA: 0x0e001d92, T1 50, T2 80,%Jan 12 11:37:45 2009 IA address option(5), option-len 24,%Jan 12 11:37:45 2009 IANA address: 2001:2, preferred-lifetime: 100,valid-lifetime: 200,%Jan 12 11:37:45 2009 vendor class option(16), option-len 14,%Jan 12 11:37:45 2009 enterprise number : 311,%Jan 12 11:37:45 2009 option request option(6), option-len 6,%Jan 12 11:37:45 2009 requested-option: domain search list,%Jan 12 11:37:45 2009 requested-option: DNS server list,%Jan 12 11:37:45 2009 requested-option: vendor specific info,IPv6,地址释放,Ry,S3,vlan1,Reply,报文解析,%Jan 12 11:37:45 2009 DHCPv6 PACKET: sending REPLY,to fe80:45fe:bdca:d4f6:4f67 on interface Vlan1,%Jan 12 11:37:45 2009 DHCPv6 DETAILS: contents of REPLY packet,%Jan 12 11:37:45 2009 transaction-ID: 0x00c7be43,%Jan 12 11:37:45 2009 client ID option(1), option-len 14,%Jan 12 11:37:45 2009 DUID: 00:01:00:06:10:38:e8:9a:00:03:0f:fe:30:45,%Jan 12 11:37:45 2009 server ID option(2), option-len 14,%Jan 12 11:37:45 2009 DUID: 00:01:00:01:49:67:2f:04:00:03:0f:10:16:1e,%Jan 12 11:37:45 2009 status code option(13), option-len 2,%Jan 12 11:37:45 2009 status-code: success,%Jan 12 11:37:45 2009 vendor specific info option(17), option-len 4,%Jan 12 11:37:45 2009 enterprise number : 6339,收到,Release,报文后，服务器查找地址绑定表，如果有相应地址绑定信息，则告知客户端成功释放该地址,(,Reply,报文中的,status-code,值为,success,),该地址对于服务器来说，可以再次被分配给其它客户端,;,如果在地址绑定表中无相应地址绑定信息，则回应的,Reply,报文中,status-code,值为,NoBinding,Rapid Commit,选项功能,S3,vlan1,目前,Vista,系统还不支持使能,Rapid Commit,选项，可以通过在,winxp,系统（装有,IPv6,协议栈）中运行,Dibbler,软件，该软件必须装在,C,盘根目录下,s3(config-if-vlan1)#ipv6 dhcp server zhangpengi rapid-commit,iface local2 ,rapid-commit yes,ia,option dns-server,option domain,option vendor-spec,在,Dibbler,文件夹中打开名为,client.conf,的配置文件，进行如下相应配置：,local2,为,pc,网卡名，,rapid-commit yes,使能,rapid commit,选项，,ia,使能,ipv6,地址选项，另外还使能了一些其它选项,C:Documents and SettingszpCD C:,C:CD dibbler,C:dibblerdibbler-client.exe RUN,在命令行中运行,dibbler-client.exe,Rapid Commit,选项功能,so,S3,vlan1,%Jan 15 16:41:36 2009 DHCPv6 PACKET: received SOLICIT from,fe80:203:fff:fefe:3045 on interface Vlan1,%Jan 15 16:41:36 2009 DHCPv6 DETAILS: contents of SOLICIT packet,%Jan 15 16:41:36 2009 transaction-ID: 0x00007df8,%Jan 15 16:41:36 2009 client ID option(1), option-len 14,%Jan 15 16:41:36 2009 DUID: 00:01:00:06:10:38:e8:9a:00:03:0f:f