IPvv互通技术之隧道技术(Tunnel).docVIP

??? 一：概述: ??? 隧道技术提供了一种以现有IPv4路由体系来传递IPv6数据的方法：将IPv6的分组作为无结构意义的数据，封装在IPv4数据报中，被IPv4网络传输。根据建立方式的不同，隧道可以分成两类：(手工)配置的隧道和自动配置的隧道。隧道技术巧妙地利用了现有的IPv4网络，它的意义在于提供了一种使 IPv6的节点之间能够在过渡期间通信的方法，但它并不能解决IPv6节点与IPv4节点之间相互通信的问题。 ??? 二：实验拓扑: ??? ? ??? R1(s2/1)-(s2/1)R2(s2/2)-(s2/1)R3(s2/2)-(s2/1)R4 ??? 4台路由,R1,R4运行IPV6 ??? R2,R3半边运行IPV4,半边运行IPV6 ??? 三：配置信息 ??? R1# ??? ipv6 unicast-routing??????? //开启IPV6单播路由功能 ??? interface Loopback0 ???? ip address 1.1.1.1 255.255.255.0????????? //配置环回接口做为它的router-id ??? interface Serial2/1 ??? ipv6 address 12::1/64??????????????????????????? //IPV6地址 ???? ipv6 ospf 1 area 0?????????????????????????????? //接口下启用ospf ??? R2# ??? ipv6 unicast-routing ??? interface Serial2/1 ??? ipv6 address 12::2/64 ???? ipv6 ospf 1 area 0 ??? interface Serial2/2 ???? ip address 23.0.0.2 255.255.255.0 ??? interface Tunnel0????????????????????????? //在s2/1接口下打隧道 ??? ipv6 address 10::1/64???????????????????? //给隧道配置IPV6地址 ???? ipv6 ospf 1 area 0??????????????????????? //启用ospf ???? tunnel source Serial2/2?????????????? //申明隧道源端 ???? tunnel destination 23.0.0.3????????? //申明隧道目的端 ???? tunnel mode ipv6ip?????????????? //隧道模式是ipv6到ipv4 ??? R3# ??? ipv6 unicast-routing ??? interface Serial2/1 ???? ip address 23.0.0.3 255.255.255.0 ??? interface Serial2/2 ??? ipv6 address 34::3/64 ???? ipv6 ospf 1 area 0 ? ??? interface Tunnel0 ??? ipv6 address 10::2/64 ???? ipv6 ospf 1 area 0 ???? tunnel source Serial2/1 ???? tunnel destination 23.0.0.2 ???? tunnel mode ipv6ip ? ??? R4# ??? ipv6 unicast-routing ??? interface Loopback0 ???? ip address 4.4.4.4 255.255.255.0 ??? interface Serial2/1 ??? ipv6 address 34::4/64 ???? ipv6 ospf 1 area 0 ? ? ??? 四：调试信息 ??? R1#show ipv6 route ??? IPv6 Routing Table - 6 entries ??? Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP ?????????? U - Per-user Static route ?????????? I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary ?????????? O - OSPF intra, OI - OSPF inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2 ??????????