一、配置IP地址

[AR1]int g0/0/0

[AR1-GigabitEthernet0/0/0]ip add 192.168.1.254 24

[AR1-GigabitEthernet0/0/0]int se4/0/0

[AR1-Serial4/0/0]ip add 15.1.1.1 24

[AR1-Serial4/0/0]

[AR2]int g0/0/0

[AR2-GigabitEthernet0/0/0]ip add 192.168.2.254 24

[AR2-GigabitEthernet0/0/0]int se4/0/0

[AR2-Serial4/0/0]ip add 25.1.1.2 24

[AR2-Serial4/0/0]

[AR3]int g0/0/0

[AR3-GigabitEthernet0/0/0]ip add 192.168.3.254 24

[AR3-GigabitEthernet0/0/0]int se4/0/0

[AR3-Serial4/0/0]ip add 35.1.1.3 24

[AR3-Serial4/0/0]

[AR4]int g0/0/1

[AR4-GigabitEthernet0/0/1]ip add 192.168.4.254 24

[AR4-GigabitEthernet0/0/1]int g0/0/0

[AR4-GigabitEthernet0/0/0]ip add 45.1.1.4 24

[AR4-GigabitEthernet0/0/0]

[AR5]int se3/0/1

[AR5-Serial3/0/1]ip add 25.1.1.5 24

[AR5-Serial3/0/1]

[AR5-Serial3/0/1]int se4/0/0

[AR5-Serial4/0/0]ip add 35.1.1.5 24

[AR5-Serial4/0/0]

[AR5-Serial4/0/0]int se4/0/1

[AR5-Serial4/0/1]ip add 15.1.1.5 24

[AR5-Serial4/0/1]

[AR5-Serial4/0/1]int g0/0/0

[AR5-GigabitEthernet0/0/0]ip add 45.1.1.5 24

[AR5-GigabitEthernet0/0/0]int loo0

[AR5-LoopBack0]ip add 5.5.5.5 24

[AR5-LoopBack0]

二、配置缺省路由使公网可通

[AR1]ip rou 0.0.0.0 0 15.1.1.5

[AR2]ip rou 0.0.0.0 0 25.1.1.5

[AR3]ip rou 0.0.0.0 0 35.1.1.5

[AR4]ip rou 0.0.0.0 0 45.1.1.5

三、R1与R5间使用PPP的PAP认证，R5为主认证方

[AR5-aaa]local-user wangdaye pa ci wdy12345

Info: Add a new user.

[AR5-aaa]lo wangdaye ser ppp

[AR5-aaa]q

[AR5]int s4/0/1

[AR5-Serial4/0/1]ppp au pap

[AR5-Serial4/0/1]

[AR1]int s4/0/0

[AR1-Serial4/0/0]ppp pap lo wangdaye pass ci wdy1234

四、R2与R5间使用PPP的CHAP认证，R5为主认证方

[AR5-Serial4/0/1]aaa

[AR5-aaa]lo lidaye pa ci ldy12345

Info: Add a new user.

[AR5-aaa]lo lidaye ser ppp

[AR5-aaa]int se3/0/1

[AR5-Serial3/0/1]ppp au chap

[AR5-Serial3/0/1]

[AR2]int se4/0/0

[AR2-Serial4/0/0]ppp chap user lidaye

[AR2-Serial4/0/0]ppp chap pass cip ldy12345

[AR2-Serial4/0/0]

五、R3与R5之间使用HDLC封装

[AR3]int se4/0/0

[AR3-Serial4/0/0]link-protocol hdlc

[AR5]int se4/0/0

[AR5-Serial4/0/0]link-protocol hdlc

六、R1、R2、R3构建一个MGRE环境，R1为中心站点

[AR1]int tunn 0/0/0

[AR1-Tunnel0/0/0]ip add 10.1.2.1 24

[AR1-Tunnel0/0/0]tunnel-protocol gre p2mp

[AR1-Tunnel0/0/0]sou 15.1.1.1

[AR1-Tunnel0/0/0]nhrp network-id 100

[AR1-Tunnel0/0/0]

[AR2]int t0/0/0

[AR2-Tunnel0/0/0]ip add 10.1.2.2 24

[AR2-Tunnel0/0/0]tu g p

[AR2-Tunnel0/0/0]sou 25.1.1.2

[AR2-Tunnel0/0/0]nh n 100

[AR2-Tunnel0/0/0]nh en 10.1.2.1 15.1.1.1 re

[AR2-Tunnel0/0/0]

[AR3]int t0/0/0

[AR3-Tunnel0/0/0]ip add 10.1.2.3 24

[AR3-Tunnel0/0/0]tu g p

[AR3-Tunnel0/0/0]sou 35.1.1.3

[AR3-Tunnel0/0/0]nhrp ne 100

[AR3-Tunnel0/0/0]nh en 10.1.2.1 15.1.1.1 re

[AR3-Tunnel0/0/0]

七、R1与R4间为点到点的GRE、

[AR1]int t 0/0/1

[AR1-Tunnel0/0/1]ip add 10.1.1.1 24

[AR1-Tunnel0/0/1]tu g

[AR1-Tunnel0/0/1]sou 15.1.1.1

[AR1-Tunnel0/0/1]de 45.1.1.4

[AR4]int t0/0/1

[AR4-Tunnel0/0/1]ip add 10.1.1.4 24

[AR4-Tunnel0/0/1]tu g

[AR4-Tunnel0/0/1]sou 45.1.1.4

[AR4-Tunnel0/0/1]de 15.1.1.1

八、配置RIP路由协议来传递两端私网路由

[AR1]rip 1

[AR1-rip-1]v 2

[AR1-rip-1]undo summ

[AR1-rip-1]net 192.168.0.0

[AR1-rip-1]net 10.0.0.0

[AR1-rip-1]

[AR2]rip 1

[AR2-rip-1]v 2

[AR2-rip-1]un sum

[AR2-rip-1]net 192.168.0.0

[AR2-rip-1]net 10.0.0.0

[AR2-rip-1]

[AR3]rip 1

[AR3-rip-1]v 2

[AR3-rip-1]un summ

[AR3-rip-1]net 192.168.0.0

[AR3-rip-1]net 10.0.0.0

[AR3-rip-1]

[AR4-Tunnel0/0/1]rip 1

[AR4-rip-1]v 2

[AR4-rip-1]un summ

[AR4-rip-1]net 192.168.0.0

[AR4-rip-1]net 10.0.0.0

[AR4-rip-1]

九、配置nat使PC可以访问R5环回，达到全网通

[AR1]acl 2000

[AR1-acl-basic-2000]rule per sou 192.168.1.0 0.0.0.255

[AR1-acl-basic-2000]int se4/0/0

[AR1-Serial4/0/0]nat out 2000

[AR1-Serial4/0/0]

[AR2]acl 2000

[AR2-acl-basic-2000]rule per sou 192.168.2.0 0.0.0.255

[AR2-acl-basic-2000]int se4/0/0

[AR2-Serial4/0/0]nat out 2000

[AR2-Serial4/0/0]

[AR3]acl 2000

[AR3-acl-basic-2000]rule per sou 192.168.3.0 0.0.0.255

[AR3-acl-basic-2000]int se4/0/0

[AR3-Serial4/0/0]nat out 2000

[AR3-Serial4/0/0]

[AR4]acl 2000

[AR4-acl-basic-2000]rule per sou 192.168.4.0 0.0.0.255

[AR4-acl-basic-2000]int g0/0/0

[AR4-GigabitEthernet0/0/0]nat out 2000

[AR4-GigabitEthernet0/0/0