实验要求
1.R2为ISP，其上只能配置IP地址
2.R1-R2之间为HDLC封装
3.R2-R3之间为ppp封装，pap认证，R2为主认证方
4.R2-R4之间为ppp封装，chap认证，R2为主认证方
5.R1、R2、R3构建MGRE环境，仅R1IP地址固定
6.内网使用RTP获取路由，所有pc可以互相访问，并目可访问R2的环回。
第一步：IP地址规划
PC地址
| 设备 | 网关 | 地址 |
| PC1 | 192.168.1.1 24 | 192.168.1.2 24 |
| PC2 | 192.168.2.1 24 | 192.168.2.2 24 |
| PC3 | 192.168.3.1 24 | 192.168.3.2 24 |
设备地址
| 设备 | 接口 | 地址 |
| R1 | s4/0/0 | 15.1.1.1 24 |
| R3 | S4/0/0 | 25.1.1.2 24 |
| R4 | s4/0/0 | 35.1.1.3 24 |
| R2 | s4/0/0 | 15.1.1.4 24 |
| s4/0/1 | 25.1.1.4 24 | |
| s3/0/0 | 35.1.1.4 24 | |
| lookback | 2.2.2.2 24 |
第二步：配置IP地址
R1配置
[R1]int g 0/0/0
[R1-GigabitEthernet0/0/0]ip address 192.168.1.1 24
[R1-GigabitEthernet0/0/0]int s 4/0/0
[R1-Serial4/0/0]ip address 15.1.1.1 24R2配置
[R2]int s4/0/0
[R2-Serial4/0/0]ip address 15.1.1.4 24
[R2-Serial4/0/0]int s4/0/1
[R2-Serial4/0/1]ip address 25.1.1.4 24
[R2-Serial4/0/1]int s 3/0/0
[R2-Serial3/0/0]ip address 35.1.1.4 24
[R2]int lo0
[R2-LoopBack0]ip address 2.2.2.2 24
[R2-LoopBack0]R3配置
[R3]int g 0/0/0
[R3-GigabitEthernet0/0/0]ip address 192.168.2.1 24
[R3-GigabitEthernet0/0/0]int s 4/0/0
[R3-Serial4/0/0]ip address 25.1.1.2 24R4配置
[R4]int g0/0/0
[R4-GigabitEthernet0/0/0]ip address 192.168.3.1 24
[R4-GigabitEthernet0/0/0]int s 4/0/0
[R4-Serial4/0/0]ip address 35.1.1.3 24第三步：配置缺省路由
[R1]ip route-static 0.0.0.0 0 15.1.1.4
[R3]ip route-static 0.0.0.0 0 25.1.1.4
[R4]ip route-static 0.0.0.0 0 35.1.1.4第四步：NAT
R1配置
[R1]acl 2000
[R1-acl-basic-2000]rule 1 permit source any
[R1]int s 4/0/0
[R1-Serial4/0/0]nat outbound 2000R3配置
[R3]acl 2000
[R3-acl-basic-2000]rule 1 permit source any
[R3]int s 4/0/0
[R3-Serial4/0/0]nat outbound 2000R4配置
[R4]acl 2000
[R4-acl-basic-2000]rule 1 permit source any
[R4]int s 4/0/0
[R4-Serial4/0/0]nat outbound 2000
第四步：HDLC封装
R1配置
[R1]int s4/0/0
[R1-Serial4/0/0]link-protocol hdlc R4配置
[R4]int s4/0/0
[R4-Serial4/0/0]link-protocol hdlc 第四步：PAP认证
R2-R3之间为ppp封装，pap认证，R2为主认证方
主认证方
[R2]aaa
[R2-aaa]local-user huawei password cipher huawei
[R2-aaa]local-user huawei service-type ppp
[R2]int s 4/0/1
[R2-Serial4/0/1]ppp authentication-mode pap被认证方
[R3]int s 4/0/0
[R3-Serial4/0/0]ppp pap local-user huawei password cipher huawei第五步：chap认证
R2-R4之间为ppp封装，chap认证，R2为主认证方
主认证方
[R2]aaa
[R2-aaa]local-user huawei password cipher huawei
[R2-aaa]local-user huawei service-type ppp
[R2]int s 3/0/0
[R2-Serial3/0/0]ppp authentication-mode chap 被认证方
[R4]int s 3/0/0
[R4-Serial4/0/0]link-protocol ppp
[R4-Serial4/0/0]ppp chap password cipher huawei
[R4-Serial4/0/0]ppp chap user huawei第六步：配置MGRE环境
R1配置
[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 15.1.1.1
[R1-Tunnel0/0/0]nhrp network-id 100
R3配置
[R3]interface Tunnel 0/0/0
[R3-Tunnel0/0/0]ip address 10.1.1.2 24
[R3-Tunnel0/0/0]tunnel-protocol gre p2mp
[R3-Tunnel0/0/0]source s4/0/0
[R3-Tunnel0/0/0]nhrp entry 10.1.1.1 15.1.1.1 register
[R3-Tunnel0/0/0]nhrp network-id 100R4配置
[R4]interface Tunnel 0/0/0
[R4-Tunnel0/0/0]ip address 10.1.1.3 24
[R4-Tunnel0/0/0]tunnel-protocol gre p2mp
[R4-Tunnel0/0/0]source s4/0/0
[R4-Tunnel0/0/0]nhrp entry 10.1.1.1 15.1.1.1 register
[R4-Tunnel0/0/0]nhrp network-id 100
第七步：书写RIP路由
R1配置
[R1]rip 1
[R1-rip-1]version 2
[R1-rip-1]network 10.0.0.0
[R1-rip-1]network 192.168.1.0 R3配置
[R3]rip 1
[R3-rip-1]version 2
[R3-rip-1]network 192.168.2.0
[R3-rip-1]network 10.0.0.0R4配置
[R4]rip 1
[R4-rip-1]version 2
[R4-rip-1]network 192.168.3.0
[R4-rip-1]network 10.0.0.0MGER环境下RIP路由配置
[R1]interface Tunnel 0/0/0
[R1-Tunnel0/0/0]undo rip split-horizon
[R1-Tunnel0/0/0]nhrp entry multicast dynamic