配置启用dhcp
启用dhcp 时间:2021-04-03 阅读:()
ASA:DHCPv6中继配置示例和故障排除目录简介先决条件要求使用的组件有状态的与无状态的DHCPv6网络图DHCPv6与DHCPv4消息类型无状态的DHCPv6中继配置数据包流验证调试Wireshark快照有状态的DHCPv6配置数据包流验证调试Wireshark快照故障排除DHCP中继输出版本地址调试相关信息相关的思科支持社区讨论简介本文描述如何配置思科可适应安全工具(ASA),DHCPv6中继代理并且包括那些基本故障排除.
在ASA代码版本9.
0中及以后,ASA支持先决条件要求Cisco建议您了解以下主题:IPv6基本概念q寻址的IPv6机制qDHCPv6数据包流qDHCP中继概念q使用的组件本文档中的信息根据ASA5500版本9.
1.
2.
本文档中的信息都是基于特定实验室环境中的设备编写的.
本文档中使用的所有设备最初均采用原始(默认)配置.
如果您使用的是真实网络,请确保您已经了解所有命令的潜在影响.
有状态的与无状态的DHCPv6如果了解地址分配不同的说法在IPv6的,帮助您知道DHCPv6中继功能如何在ASA运作.
对动态地址分配的Refre在IPv6使用SLAAC和DHCP简介的无状态的地址自动配置(SLAAC)和DHCPv6.
网络图此配置示例描述如何配置ASA作为DHCPv6中继代理.
在此配置中,客户端是IPv6客户端连接的接口.
服务器是DHCPv6服务器2001:db8:200:2/64是可及的接口.
DHCPv6与DHCPv4消息类型无状态的DHCPv6中继配置这是无状态的DHCPv6中继配置的基本配置在ASA:interfaceGigabitEthernet0/1nameifCLIENTsecurity-level100ipv6address2001:db8:100::1/64ipv6enableipv6ndother-config-flag!
interfaceGigabitEthernet0/0nameifSERVERsecurity-level0ipv6address2001:db8:200:1/64ipv6enable!
ipv6dhcprelayserver2001:db8:200:2insideipv6dhcprelayenableoutside数据包流使用无状态的DHCPv6,这是从客户端的数据包流:ASA截断这些数据包并且包裹他们到DHCP中继格式:验证调试如果启用dhcprelay调试的IPv6并且调试IPv6dhcp,则相关输出打印对屏幕.
此输出从一个工作的方案被采取:IPv6DHCP:ReceivedINFORMATION-REQUESTfromfe80::c671:feff:fe93:b51aonCLIENTIPv6DHCP:detailedpacketcontentssrcfe80::c671:feff:fe93:b51a(CLIENT)dstff02::1:2typeINFORMATION-REQUEST(11),xid1588088optionELAPSED-TIME(8),len2elapsed-time0optionCLIENTID(1),len1000030001c471fe93b516optionORO(6),len6DNS-SERVERS,DOMAIN-LIST,UNKNOWNIPv6DHCP_RELAY:RelayingINFORMATION-REQUESTfromfe80::c671:feff:fe93:b51aonCLIENTIPv6DHCP_RELAY:Creatingrelaybindingforfe80::c671:feff:fe93:b51aatinterfaceCLIENTIPv6DHCP_RELAY:to2001:db8:200::2via2001:db8:200::2usingSERVERIPv6DHCP:SendingRELAY-FORWARDto2001:db8:200::2onSERVERIPv6DHCP:detailedpacketcontentssrc2001:db8:200::1dst2001:db8:200::2(SERVER)typeRELAY-FORWARD(12),hop0link2001:db8:100::1peerfe80::c671:feff:fe93:b51aoptionRELAY-MSG(9),len34typeINFORMATION-REQUEST(11),xid1588088optionELAPSED-TIME(8),len2elapsed-time0optionCLIENTID(1),len1000030001c471fe93b516optionORO(6),len6DNS-SERVERS,DOMAIN-LIST,UNKNOWNoptionINTERFACE-ID(18),len40x00000015IPv6DHCP:ReceivedRELAY-REPLYfrom2001:db8:200::2onSERVERIPv6DHCP:detailedpacketcontentssrc2001:db8:200::2(SERVER)dst2001:db8:200::1typeRELAY-REPLY(13),hop0link2001:db8:100::1peerfe80::c671:feff:fe93:b51aoptionRELAY-MSG(9),len67typeREPLY(7),xid1588088optionSERVERID(2),len1000030001002414a33c94optionCLIENTID(1),len1000030001c471fe93b516optionDNS-SERVERS(23),len162001:db8:1000::1optionDOMAIN-LIST(24),len11cisco.
comoptionINTERFACE-ID(18),len40x00000015IPv6DHCP_RELAY:RelayingRELAY-REPLYfrom2001:db8:200::2onSERVERIPv6DHCP_RELAY:relayedmsg:REPLYIPv6DHCP_RELAY:tofe80::c671:feff:fe93:b51aIPv6DHCP:SendingREPLYtofe80::c671:feff:fe93:b51aonCLIENTIPv6DHCP:detailedpacketcontentssrcfe80::219:7ff:fe24:2e44dstfe80::c671:feff:fe93:b51a(CLIENT)typeREPLY(7),xid1588088optionSERVERID(2),len1000030001002414a33c94optionCLIENTID(1),len1000030001c471fe93b516optionDNS-SERVERS(23),len162001:db8:1000::1optionDOMAIN-LIST(24),len11cisco.
com在INFORMATION-REQUEST请求包中,客户端仅请求dns-server和域,预计,因为cilent为无状态的DHCPv6配置.
Wireshark快照DHCP客户端请求ASA中继的DHCP请求从服务器的DHCP回复转发的回复对客户端有状态的DHCPv6配置这是有状态的DHCPv6中继配置的基本配置在ASA:interfaceGigabitEthernet0/1nameifCLIENTsecurity-level100ipv6address2001:db8:100::1/64ipv6enable!
interfaceGigabitEthernet0/0nameifSERVERsecurity-level0ipv6address2001:db8:200:1/64ipv6enable!
ipv6dhcprelayserver2001:db8:200:2insideipv6dhcprelayenableoutside数据包流使用有状态的DHCPv6,这是从客户端的数据包流:ASA截断这些数据包并且包裹他们到DHCP中继格式:验证调试IPv6DHCP:ReceivedSOLICITfromfe80::c671:feff:fe93:b51aonCLIENTIPv6DHCP:detailedpacketcontentssrcfe80::c671:feff:fe93:b51a(CLIENT)dstff02::1:2typeSOLICIT(1),xid2490681optionELAPSED-TIME(8),len2elapsed-time0optionCLIENTID(1),len1000030001c471fe93b516optionORO(6),len4DNS-SERVERS,DOMAIN-LISToptionIA-NA(3),len12IAID0x00040001,T10,T20IPv6DHCP_RELAY:RelayingSOLICITfromfe80::c671:feff:fe93:b51aonCLIENTIPv6DHCP_RELAY:Creatingrelaybindingforfe80::c671:feff:fe93:b51aatinterfaceCLIENTIPv6DHCP_RELAY:to2001:db8:200::2via2001:db8:200::2usingSERVERIPv6DHCP:SendingRELAY-FORWARDto2001:db8:200::2onSERVERIPv6DHCP:detailedpacketcontentssrc2001:db8:200::1dst2001:db8:200::2(SERVER)typeRELAY-FORWARD(12),hop0link2001:db8:100::1peerfe80::c671:feff:fe93:b51aoptionRELAY-MSG(9),len48typeSOLICIT(1),xid2490681optionELAPSED-TIME(8),len2elapsed-time0optionCLIENTID(1),len1000030001c471fe93b516optionORO(6),len4DNS-SERVERS,DOMAIN-LISToptionIA-NA(3),len12IAID0x00040001,T10,T20optionINTERFACE-ID(18),len40x00000015IPv6DHCP:ReceivedRELAY-REPLYfrom2001:db8:200::2onSERVERIPv6DHCP:detailedpacketcontentssrc2001:db8:200::2(SERVER)dst2001:db8:200::1typeRELAY-REPLY(13),hop0link2001:db8:100::1peerfe80::c671:feff:fe93:b51aoptionRELAY-MSG(9),len111typeADVERTISE(2),xid2490681optionSERVERID(2),len1000030001002414a33c94optionCLIENTID(1),len1000030001c471fe93b516optionIA-NA(3),len40IAID0x00040001,T143200,T269120optionIAADDR(5),len24IPv6address2001:db8:300:0:48ae:5f5d:8290:e926preferredINFINITY,validINFINITYoptionDNS-SERVERS(23),len162001:db8:1000::1optionDOMAIN-LIST(24),len11cisco.
comoptionINTERFACE-ID(18),len40x00000015IPv6DHCP_RELAY:RelayingRELAY-REPLYfrom2001:db8:200::2onSERVERIPv6DHCP_RELAY:relayedmsg:ADVERTISEIPv6DHCP_RELAY:tofe80::c671:feff:fe93:b51aIPv6DHCP:SendingADVERTISEtofe80::c671:feff:fe93:b51aonCLIENTIPv6DHCP:detailedpacketcontentssrcfe80::219:7ff:fe24:2e44dstfe80::c671:feff:fe93:b51a(CLIENT)typeADVERTISE(2),xid2490681optionSERVERID(2),len1000030001002414a33c94optionCLIENTID(1),len1000030001c471fe93b516optionIA-NA(3),len40IAID0x00040001,T143200,T269120optionIAADDR(5),len24IPv6address2001:db8:300:0:48ae:5f5d:8290:e926preferredINFINITY,validINFINITYoptionDNS-SERVERS(23),len162001:db8:1000::1optionDOMAIN-LIST(24),len11cisco.
comIPv6DHCP:ReceivedREQUESTfromfe80::c671:feff:fe93:b51aonCLIENTIPv6DHCP:detailedpacketcontentssrcfe80::c671:feff:fe93:b51a(CLIENT)dstff02::1:2typeREQUEST(3),xid2492842optionELAPSED-TIME(8),len2elapsed-time0optionCLIENTID(1),len1000030001c471fe93b516optionORO(6),len4DNS-SERVERS,DOMAIN-LISToptionSERVERID(2),len1000030001002414a33c94optionIA-NA(3),len40IAID0x00040001,T10,T20optionIAADDR(5),len24IPv6address2001:db8:300:0:48ae:5f5d:8290:e926preferredINFINITY,validINFINITYIPv6DHCP_RELAY:RelayingREQUESTfromfe80::c671:feff:fe93:b51aonCLIENTIPv6DHCP_RELAY:to2001:db8:200::2via2001:db8:200::2usingSERVERIPv6DHCP:SendingRELAY-FORWARDto2001:db8:200::2onSERVERIPv6DHCP:detailedpacketcontentssrc2001:db8:200::1dst2001:db8:200::2(SERVER)typeRELAY-FORWARD(12),hop0link2001:db8:100::1peerfe80::c671:feff:fe93:b51aoptionRELAY-MSG(9),len90typeREQUEST(3),xid2492842optionELAPSED-TIME(8),len2elapsed-time0optionCLIENTID(1),len1000030001c471fe93b516optionORO(6),len4DNS-SERVERS,DOMAIN-LISToptionSERVERID(2),len1000030001002414a33c94optionIA-NA(3),len40IAID0x00040001,T10,T20optionIAADDR(5),len24IPv6address2001:db8:300:0:48ae:5f5d:8290:e926preferredINFINITY,validINFINITYoptionINTERFACE-ID(18),len40x00000015IPv6DHCP:ReceivedRELAY-REPLYfrom2001:db8:200::2onSERVERIPv6DHCP:detailedpacketcontentssrc2001:db8:200::2(SERVER)dst2001:db8:200::1typeRELAY-REPLY(13),hop0link2001:db8:100::1peerfe80::c671:feff:fe93:b51aoptionRELAY-MSG(9),len111typeREPLY(7),xid2492842optionSERVERID(2),len1000030001002414a33c94optionCLIENTID(1),len1000030001c471fe93b516optionIA-NA(3),len40IAID0x00040001,T143200,T269120optionIAADDR(5),len24IPv6address2001:db8:300:0:48ae:5f5d:8290:e926preferredINFINITY,validINFINITYoptionDNS-SERVERS(23),len162001:db8:1000::1optionDOMAIN-LIST(24),len11cisco.
comoptionINTERFACE-ID(18),len40x00000015IPv6DHCP_RELAY:RelayingRELAY-REPLYfrom2001:db8:200::2onSERVERIPv6DHCP_RELAY:relayedmsg:REPLYIPv6DHCP_RELAY:tofe80::c671:feff:fe93:b51aIPv6DHCP:SendingREPLYtofe80::c671:feff:fe93:b51aonCLIENTIPv6DHCP:detailedpacketcontentssrcfe80::219:7ff:fe24:2e44dstfe80::c671:feff:fe93:b51a(CLIENT)typeREPLY(7),xid2492842optionSERVERID(2),len1000030001002414a33c94optionCLIENTID(1),len1000030001c471fe93b516optionIA-NA(3),len40IAID0x00040001,T143200,T269120optionIAADDR(5),len24IPv6address2001:db8:300:0:48ae:5f5d:8290:e926preferredINFINITY,validINFINITYoptionDNS-SERVERS(23),len162001:db8:1000::1optionDOMAIN-LIST(24),len11cisco.
comWireshark快照恳求(1)DHCPv6客户端传送请求信息为了找出DHCPv6服务器.
ASA中继请求消息.
通告(2)服务器传送通告信息为了表明为DHCP服务是可用的,以回应从客户端接收的请求消息.
REQUEST(3)客户端发送Request信息为了要求配置参数,包括IP地址或分配的前缀,从一个特定服务器.
回复(7)服务器传送包含已分配地址和配置参数以回应请求的回复信息,请求,更新或者重新绑定从客户端接收的消息.
服务器传送包含配置参数以回应Information-request消息的回复信息.
服务器传送回复信息以回应确认的确认消息或拒绝地址分配到客户端是适当的对客户端连接的链路.
服务器传送回复信息为了确认版本的收据或拒绝消息.
故障排除确认连接用DHCPv6服务器.
ciscoasa#showipv6neighborIPv6AddressAgeLink-layerAddrStateInterface2001:db8:200::200024.
14a3.
3c98REACHSERVER确认您收到从客户端的数据包,当它请求IPv6地址.
客户端发送的数据包将取决于地址分配设置(即有状态的与无状态).
当客户端开始DHCPv6进程时,发送路由器恳求消息为了发现IPv6路由器在线状态链路的.
它传送组播路由器垦请信息为了提示IPv6路由器响应.
在路由器垦请消息的以太网报头,这些字段显示:源地址域是请求IPv6地址主机的MAC地址.
q目的地址字段设置到33-33-00-00-00-02.
q在路由器垦请消息的IPv6报头,这些字段显示.
源地址域设置为链路本地IPv6地址分配到发送的接口或IPv6未指明的地址(::).
q目的地址字段设置为链路本地范围所有路由器组播地址(FF02::2).
q跳Limit字段设置到255.
q合情合理IPv6路由器发送未经请求的路由器通告消息路由器通告消息由主机包含需的信息为了确定链路前缀、链路最大传输单元(MTU)和特定路由.
ciscoasa(config)#showcapturecapindetailfe80::c671:feff:fe93:b51a.
546>ff02::1:2.
547:[udpsumok]udp42[hlim255](len100)---->Requestfromclientfe80::219:7ff:fe24:2e44.
547>fe80::c671:feff:fe93:b51a.
546:[udpsumok]udp75[class0xe0](len133,hlim255)ciscoasa(config)#showcapturecapoutdetail2packetscaptured1:12:06:52.
7007992001:db8:200:1.
547>2001:db8:200:2.
547:udp88[class0xe0]---->ASAforwardsrequesttoDHCPv6router2:12:06:53.
2890472001:db8:200:2.
547>2001:db8:200:1.
547:udp121[class0xe0]---->ReplyfromDHCPV6server.
DHCP中继输出ciscoasa#showipv6dhcprelaybinding1inuse,1mostusedClient:fe80::c671:feff:fe93:b51a(CLIENT)DUID:00030001c471fe93b516,Timeoutin56seconds注意:捆绑由ASA删除在短期之后.
这在dhcprelay调试的IPv6被看到.
ciscoasa#showipv6dhcprelaybinding1inuse,1mostusedClient:fe80::c671:feff:fe93:b51a(CLIENT)DUID:00030001c471fe93b516,Timeoutin56secondsciscoasa#showipv6dhcprelaystatisticsRelayMessages:SOLICIT2ADVERTISE2REQUEST2CONFIRM0RENEW0REBIND0REPLY9RELEASE1DECLINE0RECONFIGURE0INFORMATION-REQUEST6RELAY-FORWARD11RELAY-REPLY11RelayErrors:Malformedmessage:0Blockallocation/duplicationfailure:0Hopcountlimitexceeded:0Forwardbindingcreationfailure:0Replybindinglookupfailure:0Nooutputroute:0Conflictrelayserverroute:0Failedtoaddserverinputrule:0Unitorcontextisnotactive:0TotalRelayBindingsCreated:8版本地址在他们执行使用它为网络后,客户端能发布他们的分配的DHCPv6地址.
下一部分显示用在有状态的DHCPv6的地址版本关联的debug输出.
调试ciscoasa#showipv6dhcprelaystatisticsRelayMessages:SOLICIT2ADVERTISE2REQUEST2CONFIRM0RENEW0REBIND0REPLY9RELEASE1DECLINE0RECONFIGURE0INFORMATION-REQUEST6RELAY-FORWARD11RELAY-REPLY11RelayErrors:Malformedmessage:0Blockallocation/duplicationfailure:0Hopcountlimitexceeded:0Forwardbindingcreationfailure:0Replybindinglookupfailure:0Nooutputroute:0Conflictrelayserverroute:0Failedtoaddserverinputrule:0Unitorcontextisnotactive:0TotalRelayBindingsCreated:8相关信息了解多种DHCP选项ASADHCP中继配置示例配置ASA通过IPv6流量有CLI和ASDM配置示例的ASA数据包捕获
在ASA代码版本9.
0中及以后,ASA支持先决条件要求Cisco建议您了解以下主题:IPv6基本概念q寻址的IPv6机制qDHCPv6数据包流qDHCP中继概念q使用的组件本文档中的信息根据ASA5500版本9.
1.
2.
本文档中的信息都是基于特定实验室环境中的设备编写的.
本文档中使用的所有设备最初均采用原始(默认)配置.
如果您使用的是真实网络,请确保您已经了解所有命令的潜在影响.
有状态的与无状态的DHCPv6如果了解地址分配不同的说法在IPv6的,帮助您知道DHCPv6中继功能如何在ASA运作.
对动态地址分配的Refre在IPv6使用SLAAC和DHCP简介的无状态的地址自动配置(SLAAC)和DHCPv6.
网络图此配置示例描述如何配置ASA作为DHCPv6中继代理.
在此配置中,客户端是IPv6客户端连接的接口.
服务器是DHCPv6服务器2001:db8:200:2/64是可及的接口.
DHCPv6与DHCPv4消息类型无状态的DHCPv6中继配置这是无状态的DHCPv6中继配置的基本配置在ASA:interfaceGigabitEthernet0/1nameifCLIENTsecurity-level100ipv6address2001:db8:100::1/64ipv6enableipv6ndother-config-flag!
interfaceGigabitEthernet0/0nameifSERVERsecurity-level0ipv6address2001:db8:200:1/64ipv6enable!
ipv6dhcprelayserver2001:db8:200:2insideipv6dhcprelayenableoutside数据包流使用无状态的DHCPv6,这是从客户端的数据包流:ASA截断这些数据包并且包裹他们到DHCP中继格式:验证调试如果启用dhcprelay调试的IPv6并且调试IPv6dhcp,则相关输出打印对屏幕.
此输出从一个工作的方案被采取:IPv6DHCP:ReceivedINFORMATION-REQUESTfromfe80::c671:feff:fe93:b51aonCLIENTIPv6DHCP:detailedpacketcontentssrcfe80::c671:feff:fe93:b51a(CLIENT)dstff02::1:2typeINFORMATION-REQUEST(11),xid1588088optionELAPSED-TIME(8),len2elapsed-time0optionCLIENTID(1),len1000030001c471fe93b516optionORO(6),len6DNS-SERVERS,DOMAIN-LIST,UNKNOWNIPv6DHCP_RELAY:RelayingINFORMATION-REQUESTfromfe80::c671:feff:fe93:b51aonCLIENTIPv6DHCP_RELAY:Creatingrelaybindingforfe80::c671:feff:fe93:b51aatinterfaceCLIENTIPv6DHCP_RELAY:to2001:db8:200::2via2001:db8:200::2usingSERVERIPv6DHCP:SendingRELAY-FORWARDto2001:db8:200::2onSERVERIPv6DHCP:detailedpacketcontentssrc2001:db8:200::1dst2001:db8:200::2(SERVER)typeRELAY-FORWARD(12),hop0link2001:db8:100::1peerfe80::c671:feff:fe93:b51aoptionRELAY-MSG(9),len34typeINFORMATION-REQUEST(11),xid1588088optionELAPSED-TIME(8),len2elapsed-time0optionCLIENTID(1),len1000030001c471fe93b516optionORO(6),len6DNS-SERVERS,DOMAIN-LIST,UNKNOWNoptionINTERFACE-ID(18),len40x00000015IPv6DHCP:ReceivedRELAY-REPLYfrom2001:db8:200::2onSERVERIPv6DHCP:detailedpacketcontentssrc2001:db8:200::2(SERVER)dst2001:db8:200::1typeRELAY-REPLY(13),hop0link2001:db8:100::1peerfe80::c671:feff:fe93:b51aoptionRELAY-MSG(9),len67typeREPLY(7),xid1588088optionSERVERID(2),len1000030001002414a33c94optionCLIENTID(1),len1000030001c471fe93b516optionDNS-SERVERS(23),len162001:db8:1000::1optionDOMAIN-LIST(24),len11cisco.
comoptionINTERFACE-ID(18),len40x00000015IPv6DHCP_RELAY:RelayingRELAY-REPLYfrom2001:db8:200::2onSERVERIPv6DHCP_RELAY:relayedmsg:REPLYIPv6DHCP_RELAY:tofe80::c671:feff:fe93:b51aIPv6DHCP:SendingREPLYtofe80::c671:feff:fe93:b51aonCLIENTIPv6DHCP:detailedpacketcontentssrcfe80::219:7ff:fe24:2e44dstfe80::c671:feff:fe93:b51a(CLIENT)typeREPLY(7),xid1588088optionSERVERID(2),len1000030001002414a33c94optionCLIENTID(1),len1000030001c471fe93b516optionDNS-SERVERS(23),len162001:db8:1000::1optionDOMAIN-LIST(24),len11cisco.
com在INFORMATION-REQUEST请求包中,客户端仅请求dns-server和域,预计,因为cilent为无状态的DHCPv6配置.
Wireshark快照DHCP客户端请求ASA中继的DHCP请求从服务器的DHCP回复转发的回复对客户端有状态的DHCPv6配置这是有状态的DHCPv6中继配置的基本配置在ASA:interfaceGigabitEthernet0/1nameifCLIENTsecurity-level100ipv6address2001:db8:100::1/64ipv6enable!
interfaceGigabitEthernet0/0nameifSERVERsecurity-level0ipv6address2001:db8:200:1/64ipv6enable!
ipv6dhcprelayserver2001:db8:200:2insideipv6dhcprelayenableoutside数据包流使用有状态的DHCPv6,这是从客户端的数据包流:ASA截断这些数据包并且包裹他们到DHCP中继格式:验证调试IPv6DHCP:ReceivedSOLICITfromfe80::c671:feff:fe93:b51aonCLIENTIPv6DHCP:detailedpacketcontentssrcfe80::c671:feff:fe93:b51a(CLIENT)dstff02::1:2typeSOLICIT(1),xid2490681optionELAPSED-TIME(8),len2elapsed-time0optionCLIENTID(1),len1000030001c471fe93b516optionORO(6),len4DNS-SERVERS,DOMAIN-LISToptionIA-NA(3),len12IAID0x00040001,T10,T20IPv6DHCP_RELAY:RelayingSOLICITfromfe80::c671:feff:fe93:b51aonCLIENTIPv6DHCP_RELAY:Creatingrelaybindingforfe80::c671:feff:fe93:b51aatinterfaceCLIENTIPv6DHCP_RELAY:to2001:db8:200::2via2001:db8:200::2usingSERVERIPv6DHCP:SendingRELAY-FORWARDto2001:db8:200::2onSERVERIPv6DHCP:detailedpacketcontentssrc2001:db8:200::1dst2001:db8:200::2(SERVER)typeRELAY-FORWARD(12),hop0link2001:db8:100::1peerfe80::c671:feff:fe93:b51aoptionRELAY-MSG(9),len48typeSOLICIT(1),xid2490681optionELAPSED-TIME(8),len2elapsed-time0optionCLIENTID(1),len1000030001c471fe93b516optionORO(6),len4DNS-SERVERS,DOMAIN-LISToptionIA-NA(3),len12IAID0x00040001,T10,T20optionINTERFACE-ID(18),len40x00000015IPv6DHCP:ReceivedRELAY-REPLYfrom2001:db8:200::2onSERVERIPv6DHCP:detailedpacketcontentssrc2001:db8:200::2(SERVER)dst2001:db8:200::1typeRELAY-REPLY(13),hop0link2001:db8:100::1peerfe80::c671:feff:fe93:b51aoptionRELAY-MSG(9),len111typeADVERTISE(2),xid2490681optionSERVERID(2),len1000030001002414a33c94optionCLIENTID(1),len1000030001c471fe93b516optionIA-NA(3),len40IAID0x00040001,T143200,T269120optionIAADDR(5),len24IPv6address2001:db8:300:0:48ae:5f5d:8290:e926preferredINFINITY,validINFINITYoptionDNS-SERVERS(23),len162001:db8:1000::1optionDOMAIN-LIST(24),len11cisco.
comoptionINTERFACE-ID(18),len40x00000015IPv6DHCP_RELAY:RelayingRELAY-REPLYfrom2001:db8:200::2onSERVERIPv6DHCP_RELAY:relayedmsg:ADVERTISEIPv6DHCP_RELAY:tofe80::c671:feff:fe93:b51aIPv6DHCP:SendingADVERTISEtofe80::c671:feff:fe93:b51aonCLIENTIPv6DHCP:detailedpacketcontentssrcfe80::219:7ff:fe24:2e44dstfe80::c671:feff:fe93:b51a(CLIENT)typeADVERTISE(2),xid2490681optionSERVERID(2),len1000030001002414a33c94optionCLIENTID(1),len1000030001c471fe93b516optionIA-NA(3),len40IAID0x00040001,T143200,T269120optionIAADDR(5),len24IPv6address2001:db8:300:0:48ae:5f5d:8290:e926preferredINFINITY,validINFINITYoptionDNS-SERVERS(23),len162001:db8:1000::1optionDOMAIN-LIST(24),len11cisco.
comIPv6DHCP:ReceivedREQUESTfromfe80::c671:feff:fe93:b51aonCLIENTIPv6DHCP:detailedpacketcontentssrcfe80::c671:feff:fe93:b51a(CLIENT)dstff02::1:2typeREQUEST(3),xid2492842optionELAPSED-TIME(8),len2elapsed-time0optionCLIENTID(1),len1000030001c471fe93b516optionORO(6),len4DNS-SERVERS,DOMAIN-LISToptionSERVERID(2),len1000030001002414a33c94optionIA-NA(3),len40IAID0x00040001,T10,T20optionIAADDR(5),len24IPv6address2001:db8:300:0:48ae:5f5d:8290:e926preferredINFINITY,validINFINITYIPv6DHCP_RELAY:RelayingREQUESTfromfe80::c671:feff:fe93:b51aonCLIENTIPv6DHCP_RELAY:to2001:db8:200::2via2001:db8:200::2usingSERVERIPv6DHCP:SendingRELAY-FORWARDto2001:db8:200::2onSERVERIPv6DHCP:detailedpacketcontentssrc2001:db8:200::1dst2001:db8:200::2(SERVER)typeRELAY-FORWARD(12),hop0link2001:db8:100::1peerfe80::c671:feff:fe93:b51aoptionRELAY-MSG(9),len90typeREQUEST(3),xid2492842optionELAPSED-TIME(8),len2elapsed-time0optionCLIENTID(1),len1000030001c471fe93b516optionORO(6),len4DNS-SERVERS,DOMAIN-LISToptionSERVERID(2),len1000030001002414a33c94optionIA-NA(3),len40IAID0x00040001,T10,T20optionIAADDR(5),len24IPv6address2001:db8:300:0:48ae:5f5d:8290:e926preferredINFINITY,validINFINITYoptionINTERFACE-ID(18),len40x00000015IPv6DHCP:ReceivedRELAY-REPLYfrom2001:db8:200::2onSERVERIPv6DHCP:detailedpacketcontentssrc2001:db8:200::2(SERVER)dst2001:db8:200::1typeRELAY-REPLY(13),hop0link2001:db8:100::1peerfe80::c671:feff:fe93:b51aoptionRELAY-MSG(9),len111typeREPLY(7),xid2492842optionSERVERID(2),len1000030001002414a33c94optionCLIENTID(1),len1000030001c471fe93b516optionIA-NA(3),len40IAID0x00040001,T143200,T269120optionIAADDR(5),len24IPv6address2001:db8:300:0:48ae:5f5d:8290:e926preferredINFINITY,validINFINITYoptionDNS-SERVERS(23),len162001:db8:1000::1optionDOMAIN-LIST(24),len11cisco.
comoptionINTERFACE-ID(18),len40x00000015IPv6DHCP_RELAY:RelayingRELAY-REPLYfrom2001:db8:200::2onSERVERIPv6DHCP_RELAY:relayedmsg:REPLYIPv6DHCP_RELAY:tofe80::c671:feff:fe93:b51aIPv6DHCP:SendingREPLYtofe80::c671:feff:fe93:b51aonCLIENTIPv6DHCP:detailedpacketcontentssrcfe80::219:7ff:fe24:2e44dstfe80::c671:feff:fe93:b51a(CLIENT)typeREPLY(7),xid2492842optionSERVERID(2),len1000030001002414a33c94optionCLIENTID(1),len1000030001c471fe93b516optionIA-NA(3),len40IAID0x00040001,T143200,T269120optionIAADDR(5),len24IPv6address2001:db8:300:0:48ae:5f5d:8290:e926preferredINFINITY,validINFINITYoptionDNS-SERVERS(23),len162001:db8:1000::1optionDOMAIN-LIST(24),len11cisco.
comWireshark快照恳求(1)DHCPv6客户端传送请求信息为了找出DHCPv6服务器.
ASA中继请求消息.
通告(2)服务器传送通告信息为了表明为DHCP服务是可用的,以回应从客户端接收的请求消息.
REQUEST(3)客户端发送Request信息为了要求配置参数,包括IP地址或分配的前缀,从一个特定服务器.
回复(7)服务器传送包含已分配地址和配置参数以回应请求的回复信息,请求,更新或者重新绑定从客户端接收的消息.
服务器传送包含配置参数以回应Information-request消息的回复信息.
服务器传送回复信息以回应确认的确认消息或拒绝地址分配到客户端是适当的对客户端连接的链路.
服务器传送回复信息为了确认版本的收据或拒绝消息.
故障排除确认连接用DHCPv6服务器.
ciscoasa#showipv6neighborIPv6AddressAgeLink-layerAddrStateInterface2001:db8:200::200024.
14a3.
3c98REACHSERVER确认您收到从客户端的数据包,当它请求IPv6地址.
客户端发送的数据包将取决于地址分配设置(即有状态的与无状态).
当客户端开始DHCPv6进程时,发送路由器恳求消息为了发现IPv6路由器在线状态链路的.
它传送组播路由器垦请信息为了提示IPv6路由器响应.
在路由器垦请消息的以太网报头,这些字段显示:源地址域是请求IPv6地址主机的MAC地址.
q目的地址字段设置到33-33-00-00-00-02.
q在路由器垦请消息的IPv6报头,这些字段显示.
源地址域设置为链路本地IPv6地址分配到发送的接口或IPv6未指明的地址(::).
q目的地址字段设置为链路本地范围所有路由器组播地址(FF02::2).
q跳Limit字段设置到255.
q合情合理IPv6路由器发送未经请求的路由器通告消息路由器通告消息由主机包含需的信息为了确定链路前缀、链路最大传输单元(MTU)和特定路由.
ciscoasa(config)#showcapturecapindetailfe80::c671:feff:fe93:b51a.
546>ff02::1:2.
547:[udpsumok]udp42[hlim255](len100)---->Requestfromclientfe80::219:7ff:fe24:2e44.
547>fe80::c671:feff:fe93:b51a.
546:[udpsumok]udp75[class0xe0](len133,hlim255)ciscoasa(config)#showcapturecapoutdetail2packetscaptured1:12:06:52.
7007992001:db8:200:1.
547>2001:db8:200:2.
547:udp88[class0xe0]---->ASAforwardsrequesttoDHCPv6router2:12:06:53.
2890472001:db8:200:2.
547>2001:db8:200:1.
547:udp121[class0xe0]---->ReplyfromDHCPV6server.
DHCP中继输出ciscoasa#showipv6dhcprelaybinding1inuse,1mostusedClient:fe80::c671:feff:fe93:b51a(CLIENT)DUID:00030001c471fe93b516,Timeoutin56seconds注意:捆绑由ASA删除在短期之后.
这在dhcprelay调试的IPv6被看到.
ciscoasa#showipv6dhcprelaybinding1inuse,1mostusedClient:fe80::c671:feff:fe93:b51a(CLIENT)DUID:00030001c471fe93b516,Timeoutin56secondsciscoasa#showipv6dhcprelaystatisticsRelayMessages:SOLICIT2ADVERTISE2REQUEST2CONFIRM0RENEW0REBIND0REPLY9RELEASE1DECLINE0RECONFIGURE0INFORMATION-REQUEST6RELAY-FORWARD11RELAY-REPLY11RelayErrors:Malformedmessage:0Blockallocation/duplicationfailure:0Hopcountlimitexceeded:0Forwardbindingcreationfailure:0Replybindinglookupfailure:0Nooutputroute:0Conflictrelayserverroute:0Failedtoaddserverinputrule:0Unitorcontextisnotactive:0TotalRelayBindingsCreated:8版本地址在他们执行使用它为网络后,客户端能发布他们的分配的DHCPv6地址.
下一部分显示用在有状态的DHCPv6的地址版本关联的debug输出.
调试ciscoasa#showipv6dhcprelaystatisticsRelayMessages:SOLICIT2ADVERTISE2REQUEST2CONFIRM0RENEW0REBIND0REPLY9RELEASE1DECLINE0RECONFIGURE0INFORMATION-REQUEST6RELAY-FORWARD11RELAY-REPLY11RelayErrors:Malformedmessage:0Blockallocation/duplicationfailure:0Hopcountlimitexceeded:0Forwardbindingcreationfailure:0Replybindinglookupfailure:0Nooutputroute:0Conflictrelayserverroute:0Failedtoaddserverinputrule:0Unitorcontextisnotactive:0TotalRelayBindingsCreated:8相关信息了解多种DHCP选项ASADHCP中继配置示例配置ASA通过IPv6流量有CLI和ASDM配置示例的ASA数据包捕获
IMIDC(rainbow cloud)：香港/台湾/日本/莫斯科独立服务器特价,闪购大促销,最低30usd/月起
imidc怎么样?imidc彩虹网路，rainbow cloud知名服务器提供商。自营多地区数据中心，是 Apnic RIPE Afrinic Arin 认证服务商。拥有丰富的网路资源。 在2021年 6.18 开启了输血大促销，促销区域包括 香港 台湾 日本 莫斯科 等地促销机型为 E3係，参与促销地区有 香港 日本 台湾 莫斯科 等地， 限量50台,售罄为止,先到先得。所有服务器配置 CPU ...
香港 1核1G 29元/月 美国1核 2G 36元/月 快云科技
快云科技: 11.11钜惠 美国云机2H5G年付148仅有40台，云服务器全场7折，香港云服务器年付388仅不到五折 公司介绍：快云科技是成立于2020年的新进主机商，持有IDC/ICP/ISP等证件资质齐全主营产品有：香港弹性云服务器，美国vps和日本vps，香港物理机，国内高防物理机以及美国日本高防物理机官网地址：www.345idc.com活动截止日期为2021年11月13日此次促销活动提供...
提速啦(24元/月）河南BGP云服务器活动 买一年送一年4核 4G 5M
提速啦的来历提速啦是 网站 本着“良心 便宜 稳定”的初衷 为小白用户避免被坑 由赣州王成璟网络科技有限公司旗下赣州提速啦网络科技有限公司运营 投资1000万人民币 在美国Cera 香港CTG 香港Cera 国内 杭州 宿迁 浙江 赣州 南昌 大连 辽宁 扬州 等地区建立数据中心 正规持有IDC ISP CDN 云牌照 公司。公司购买产品支持3天内退款 超过3天步退款政策。提速啦的市场定位提速啦主...
启用dhcp为你推荐
-
公司网络被攻击最近公司频繁的受到网络攻击，导致网络瘫痪，又碰到arp攻击，有病毒的，有点崩溃。。。京沪高铁上市首秀哪些企业建设京沪高铁？留学生认证留学生为什么要做学历认证？甲骨文不满赔偿劳动法员工工作不满一个月辞退赔偿标准www.983mm.comwww.47683.com关键字关键字和一般标识符的区别rawtools佳能单反照相机的RAW、5.0M 是什么意思?巫正刚阿迪三叶草彩虹板鞋的鞋带怎么穿？详细点，最后有图解。高分求百度关键词工具如何利用百度关键词推荐工具选取关键词5xoy.com求个如月群真汉化版下载地址