2、R1和R5间使用PPP的PAP认证，R2与R5之间启用PPP的chap认证，R3与R5之间使用HDLC封装。3、R1/R2/R3构建一个MGRE环境，R1为中心站点；3. R1/R2/R3构建一个MGRE环境，R1为中心站点；2. R1和R5间采用PPP的PAP认证，R5为主认证方；R2与R5之间使用PPP的chap认证，R5为主认证方；5、所有PC设置私有IP为源IP，可以

一.实验拓朴图

二、实验需求

1. R5为ISP，只能进行IP地址配置；其所有地址均配为公有IP地址；
2. R1和R5间使用PPP的PAP认证，R5为主认证方；
R2与R5之间采用PPP的chap认证，R5为主认证方；
R3与R5之间使用HDLC封装；
3. 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；
4. 整个私有网络基于RIP全网可达；
5. 所有PC设置私有IP为源IP，行访问R5环回

三.实验思路

1、安装IP并创建缺省路由，使公网能互通

2、R1和R5间使用PPP的PAP认证，R2与R5之间启用PPP的chap认证，R3与R5之间使用HDLC封装

3、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

4、配置RIP

5、所有PC设置私有IP为源IP，可能访问R5环回、

四，实验步骤

配IP

[R1]int s 4/0/0
[R1-Serial4/0/0]ip add 15.1.1.1 24
[R1]int g 0/0/0
[R1-GigabitEthernet0/0/0]ip add 192.168.1.254 24

[R2]int g 0/0/0
[R2-GigabitEthernet0/0/0]ip add 192.168.2.254 24
[R2]int s 4/0/0
[R2-Serial4/0/0]ip add 25.1.1.2 24

[R3]int g 0/0/0
[R3-GigabitEthernet0/0/0]ip add 192.168.3.254 24
[R3]int s 4/0/0
[R3-Serial4/0/0]ip add 35.1.1.3 24

[R4]int g 0/0/1
[R4-GigabitEthernet0/0/0]ip add 192.168.4.254 24
[R4]int g 0/0/0
[R4-GigabitEthernet0/0/1]ip add 45.1.1.4 24

[R5]int s 4/0/1
[R5-Serial4/0/1]ip add 15.1.1.5 24
[R5]int s 4/0/0
[R5-Serial4/0/0]ip add 35.1.1.5 24
[R5]int s 3/0/1
[R5-Serial3/0/0]ip add 25.1.1.5 24
[R5]int g 0/0/0
[R5-GigabitEthernet0/0/0]ip add 45.1.1.5 24
[R5]int LoopBack 0
[R5-LoopBack0]ip add 5.5.5.5 24

创建缺省路由，使公网能互通
[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和R5间使用PPP的PA认证，R5为主认证方

[R5]aaa
[R5-aaa]local-user xxhh password cipher 12345
[R5-aaa]local-user xxhh service-type ppp
[R5]int s 4/0/1
[R5-Serial4/0/1]ppp authentication-mode pap

[R1]int s 4/0/0
[R1-Serial4/0/0]ppp pap local-user xxhh password cipher 12345

R2和R5间应用PPP的PA认证，R5为主认证方

[R5]int s 3/0/1
[R5-Serial3/0/1]ppp authentication-mode chap

[R2]int s 4/0/0
[R2-Serial4/0/0]ppp chap user xxhh
[R2-Serial4/0/0]ppp chap password cipher 12345

R3与R5之间使用DHLC封装

[R5]int s 4/0/0
[R5-Serial4/0/0]link-protocol hdlc

[R3]int Serial 4/0/0
[R3-Serial4/0/0]link-protocol hdlc

GRE的配备

[R1]interface Tunnel 0/0/0
[R1-Tunnel0/0/0]ip add 10.1.1.1 24
[R1-Tunnel0/0/0]tunnel-protocol gre
[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 10.1.1.4 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

MGRE的配置

[R1]int Tunnel 0/0/1
[R1-Tunnel0/0/1]ip address 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 address 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 15.0.0.1 register

[R3]int Tunnel 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

RIP的配置

[R1]rip 1
[R1-rip-1]v 2
[R1-rip-1]undo summary
[R1-rip-1]net 192.168.1.0
[R1-rip-1]net 10.0.0.0

[R2-rip-2]rip 1
[R2-rip-1]v 2
[R2-rip-1]undo summary
[R2-rip-1]net 192.168.2.0
[R2-rip-1]net 10.0.0.0

[R3]rip 1
[R3-rip-1]v 2
[R3-rip-1]undo summary
[R3-rip-1]net 192.168.3.0
[R3-rip-1]net 10.0.0.0

[R4]rip 1
[R4-rip-1]v 2
[R4-rip-1]undo summary
[R4-rip-1]net 192.168.4.0
[R4-rip-1]net 10.0.0.0

开启中心站点的广播

[R1]int Tunnel 0/0/1
[R1-Tunnel0/0/1]nhrp entry multicast dynamic

关闭RIP的水平分割

[R1-Tunnel0/0/1]undo rip split-horizon

[R2-Tunnel0/0/1]undo rip split-horizon

[R3-Tunnel0/0/1]undo rip split-horizon

所有PC为源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]interface Serial 4/0/0
[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]interface GigabitEthernet 0/0/0
[R4-GigabitEthernet0/0/0]nat outbound 2000

测试