1.配置ip
r1\]interface GigabitEthernet 0/0/0 \[r1-GigabitEthernet0/0/0\]ip address 14.1.1.1 24 \[r1\]interface lo0 \[r1-LoopBack0\]ip address 1.1.1.1 24 \[r2\]interface GigabitEthernet 0/0/0 \[r2-GigabitEthernet0/0/0\]ip address 24.1.1.1 24 \[r2\]interface LoopBack 0 \[r2-LoopBack0\]ip address 2.2.2.2 24 \[r3\]interface GigabitEthernet 0/0/0 \[r3-GigabitEthernet0/0/0\]ip address 34.1.1.1 24 \[r3\]interface LoopBack 0 \[r3-LoopBack0\]ip address 3.3.3.3 24 \[r4\]interface GigabitEthernet 0/0/0 \[r4-GigabitEthernet0/0/0\]ip address 14.1.1.2 24 \[r4\]interface GigabitEthernet 0/0/1 \[r4-GigabitEthernet0/0/1\]ip address 34.1.1.2 24 \[r4\]interface GigabitEthernet 0/0/2 \[r4-GigabitEthernet0/0/2\]ip address 24.1.1.2 24 2.配置路由 \[r1\]ip route-static 0.0.0.0 0 14.1.1.2 \[r2\]ip route-static 0.0.0.0 0 24.1.1.2 \[r3\]ip route-static 0.0.0.0 0 34.1.1.2 3.配置tunnel口 \[r1\]interface Tunnel 0/0/0 \[r1-Tunnel0/0/0\]ip address 10.1.1.1 24 \[r1-Tunnel0/0/0\]tunnel-protocol gre p2mp \[r1-Tunnel0/0/0\]source 14.1.1.1 \[r1-Tunnel0/0/0\]nhrp entry multicast dynamic #设置r1为nhrp服务器 \[r1-Tunnel0/0/0\]nhrp network-id 100 \[r2\]interface Tunnel 0/0/0 \[r2-Tunnel0/0/0\]ip address 10.1.1.2 24 \[r2-Tunnel0/0/0\]tunnel-protocol gre p2mp \[r2-Tunnel0/0/0\]source GigabitEthernet 0/0/0 \[r2-Tunnel0/0/0\]nhrp entry 10.1.1.1 14.1.1.1 register \[r2-Tunnel0/0/0\]nhrp network-id 100 \[r3\]interface Tunnel 0/0/0 \[r3-Tunnel0/0/0\]ip address 10.1.1.3 24 \[r3-Tunnel0/0/0\]tunnel-protocol gre p2mp \[r3-Tunnel0/0/0\]source GigabitEthernet 0/0/0 \[r3-Tunnel0/0/0\]nhrp entry 10.1.1.1 14.1.1.1 register \[r3-Tunnel0/0/0\]nhrp network-id 100 #ping 10.1.1.1/10.1.1.2/10.1.1.3均能通 #\[r1\]display nhrp peer all 查看map 4.配置路由联通环回地址 \[r1\]rip 1 \[r1-rip-1\]version 2 \[r1-rip-1\]network 1.0.0.0 #宣告环回地址 \[r1-rip-1\]network 10.0.0.0 #宣告逻辑接口 \[r2\]rip 1 \[r2-rip-1\]version 2 \[r2-rip-1\]network 2.0.0.0 \[r2-rip-1\]network 10.0.0.0 \[r3\]rip 1 \[r3-rip-1\]version 2 \[r3-rip-1\]network 3.0.0.0 \[r3-rip-1\]network 10.0.0.0 #\[r2\]display ip routing-table 查看rip学到的路由 #r2学不到r3，r3学不到r2 ,RIP工作方式：往外发组播地址（224.0.0.9），在没有组播部署的情况下，发组播相当于发广播，发广播洪范给其他两个路由器。 #发送的伪广播：R1 源ip10.1.1.1 目标ip255.255.255.255，在前面裹一个报头源ip14.1.1.1，目标ip24/34 两个包 #真广播：发送一个包复制给其他人。 伪广播：做几个包，单独发送给他们，全部能收到相当于广播的效果 #RIP特点：水平分割，从此口进不从此口出，需要关闭这个功能，就能实现r2把路由给r1,r1就能在同一个接口给r3 5.关闭中心路由器R1的水平分割 \[r1\]interface Tunnel 0/0/0 \[r1-Tunnel0/0/0\]undo rip split-horizon \[r3\]ping -a 3.3.3.3 2.2.2.2