一、 实验拓扑
微信图片_20251110142202.png
二、 实验要求
R5为ISP，只能进行IP地址配置，其所有地址均配为共有IP地址；
R1和R5间使用PPP的PAP认证，R5为主认证方；R2和R5之间使用PPP的CHAP认证，R5为主认证方；R3与R5之间使用HDLC封装；
R1,R2,R3构建一个MGRE环境，R1为中心站点，R1、R4间为点到点的GRE;
整个私有网络基本RIP全网可达;
所有PC设置私有IP为源IP，可以访问R5环回。
三、 实验配置
- 配置IP地址
[R1]int g0/0/0
[R1-GigabitEthernet0/0/0]ip add 192.168.1.1 24
[R1]int s 4/0/0
[R1-Serial4/0/0]ip add 15.1.1.1 24
[R2]int g 0/0/0
[R2-GigabitEthernet0/0/0]ip add 192.168.2.2 24
[R2]int s 4/0/0
[R2-Serial4/0/0]ip add 25.1.1.2 24
[R3]int g0/0/0
[R3-GigabitEthernet0/0/0]ip add 192.168.3.3 24
[R3]int s 4/0/0
[R3-Serial4/0/0]ip add 35.1.1.3 24
[R4]int g0/0/0
[R4-GigabitEthernet0/0/0]ip add 45.1.1.4 24
[R4]int g 0/0/1
[R4-GigabitEthernet0/0/1]ip add 192.168.4.4 24
[R5]int s 4/0/1
[R5-Serial4/0/1]ip add 15.1.1.5 24
[R5]int s 3/0/1
[R5-Serial3/0/1]ip add 25.1.1.5 24
[R5]int s 4/0/0
[R5-Serial4/0/0]ip add 35.1.1.5 24
[R5]int g 0/0/0
[R5-GigabitEthernet0/0/0]ip add 45.1.1.5 24
[R5]int l0
[R5-LoopBack0]ip add 5.5.5.5 24
- 配置静态路由
[R1]ip route-static 0.0.0.0 0 15.1.1.5
[R2]ip route-static 0.0.0.0 0 25.1.1.5
[R3]ip route-static 0.0.0.0 0 35.1.1.5
[R4]ip route-static 0.0.0.0 0 45.1.1.5
- R1与R5的PAP认证
[R5]aaa
[R5-aaa]local-user R1 password cipher R1123456
[R5-aaa]local-user R1 service-type ppp
[R5]interface Serial 4/0/1
[R5-Serial4/0/1]ppp authentication-mode pap
[R1]interface Serial 4/0/0
[R1-Serial4/0/0]ppp pap local-user R1 password cipher R1123456
屏幕截图 2025-11-10 125502.png
- R2与R5的CHAP认证
[R5]aaa
[R5-aaa]local-user R2 password cipher R2123456
[R5-aaa]local-user R2 service-type ppp
[R5]interface Serial 3/0/1
[R5-Serial3/0/1]ppp authentication-mode chap
[R2]interface Serial 4/0/0
[R2-Serial4/0/0]ppp chap user R2
[R2-Serial4/0/0]ppp chap password cipher R2123456
- R3与R5的HDLC封装
[R5]interface Serial 4/0/0
[R5-Serial4/0/0]link-protocol hdlc
[R3]interface Serial 4/0/0
[R3-Serial4/0/0]link-protocol hdlc
- R1与R4间点到点的GRE
[R1]interface Tunnel 0/0/0
[R1-Tunnel0/0/0]tunnel-protocol gre
[R1-Tunnel0/0/0]ip add 10.1.1.1 24
[R1-Tunnel0/0/0]source 15.1.1.1
[R1-Tunnel0/0/0]destination 45.1.1.4
[R4]interface Tunnel 0/0/0
[R4-Tunnel0/0/0]ip add 10.1.1.2 24
[R4-Tunnel0/0/0]tunnel-protocol gre
[R4-Tunnel0/0/0]source 45.1.1.4
[R4-Tunnel0/0/0]destination 15.1.1.1
- R1、R2、R3构建一个MGRE环境
[R1]interface Tunnel 0/0/1
[R1-Tunnel0/0/1]ip add 10.1.2.1 24
[R1-Tunnel0/0/1]tunnel-protocol gre p2mp
[R1-Tunnel0/0/1]source 15.1.1.1
[R1-Tunnel0/0/1]nhrp network-id 100
[R2]interface Tunnel 0/0/1
[R2-Tunnel0/0/1]ip add 10.1.2.2 24
[R2-Tunnel0/0/1]tunnel-protocol gre p2mp
[R2-Tunnel0/0/1]source Serial 4/0/0
[R2-Tunnel0/0/1]nhrp network-id 100
[R2-Tunnel0/0/1]nhrp entry 10.1.2.1 15.1.1.1 register
[R3]int t 0/0/1
[R3-Tunnel0/0/1]ip add 10.1.2.3 24
[R3-Tunnel0/0/1]tunnel-protocol gre p2mp
[R3-Tunnel0/0/1]source Serial 4/0/0
[R3-Tunnel0/0/1]nhrp network-id 100
[R3-Tunnel0/0/1]nhrp entry 10.1.2.1 15.1.1.1 register
屏幕截图 2025-11-08 230716.png
- 配置RIP协议
[R1]rip 1
[R1-rip-1]v 2
[R1-rip-1]undo summary
[R1-rip-1]network 192.168.1.0
[R1-rip-1]network 10.0.0.0
[R1-Tunnel0/0/1]nhrp entry multicast dynamic
[R1-Tunnel0/0/1]undo rip split-horizon
[R2]rip 1
[R2-rip-1]v 2
[R2-rip-1]undo summary
[R2-rip-1]network 192.168.2.0
[R2-rip-1]network 10.0.0.0
[R2-Tunnel0/0/1]undo rip split-horizon
[R3]rip 1
[R3-rip-1]v 2
[R3-rip-1]undo summary
[R3-rip-1]network 192.168.3.0
[R3-rip-1]network 10.0.0.0
[R3-Tunnel0/0/1]undo rip split-horizon
[R4]rip 1
[R4-rip-1]v 2
[R4-rip-1]undo summary
[R4-rip-1]network 192.168.4.0
[R4-rip-1]network 10.0.0.0
屏幕截图 2025-11-10 131236.png
- 配置easy ip
[R1]acl 2000
[R1-acl-basic-2000]rule permit source 192.168.1.0 0.0.0.255
[R1]interface Serial 4/0/0
[R1-Serial4/0/0]nat outbound 2000
[R2]acl 2000
[R2-acl-basic-2000]rule permit source 192.168.2.0 0.0.0.255
[R2]interface Serial 4/0/0
[R2-Serial4/0/0]nat outbound 2000
[R3]acl 2000
[R3-acl-basic-2000]rule permit source 192.168.3.0 0.0.0.255
[R3]int s4/0/0
[R3-Serial4/0/0]nat outbound 2000
[R4]acl 2000
[R4-acl-basic-2000]rule permit source 192.168.4.0 0.0.0.255
[R4]int g0/0/0
[R4-Serial4/0/0]nat outbound 2000
屏幕截图 2025-11-10 133401.png
