多点GRE实验配置

多点GRE实验配置

实验需求

1.R4为ISP，其上只能配置IP地址。

2.R1-R4之间为HDLC封装。

3.R2-R4之间为PPP封装，PAP认证，R4为主认证方。

4.R3-R4之间为PPP封装，CHAP认证，R4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RIP获取路由，所有PC可以互相访问，并且可以访问R4的环回。

 实验步骤

一、配置接口ip以及所需环回

[R1]int g0/0/0
[R1-GigabitEthernet0/0/0]ip a 192.168.1.1 24
[R1-GigabitEthernet0/0/0]int s4/0/0
[R1-Serial4/0/0]ip a 14.1.1.1 24[R2]int g0/0/0
[R2-GigabitEthernet0/0/0]ip a 192.168.2.1 24
[R2-GigabitEthernet0/0/0]int s4/0/0
[R2-Serial4/0/0]ip a 24.1.1.1 24[R3]int g0/0/0
[R3-GigabitEthernet0/0/0]ip a 192.168.3.1 24
[R3-GigabitEthernet0/0/0]int s4/0/0
[R3-Serial4/0/0]ip a 34.1.1.1 24[R4]int lo0
[R4-LoopBack0]ip a 4.4.4.4 24
[R4-LoopBack0]int s4/0/0
[R4-Serial4/0/0]ip a 14.1.1.2 24
[R4-Serial4/0/0]int s4/0/1
[R4-Serial4/0/1]ip a 24.1.1.2 24
[R4-Serial4/0/1]int s3/0/0
[R4-Serial3/0/0]ip a 34.1.1.2 24

二、配置缺省路由，可以pingR4的环回

[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

三、R1、R2、R3更改与R4之间的协议以及添加认证

[R1]int s4/0/0
[R1-Serial4/0/0]link-protocol hdlc
[R4]int s4/0/0
[R4-Serial4/0/0]link-protocol hdlc[R4]aaa
[R4-aaa]local-user oohun privilege level 15 password cipher 123456
[R4-aaa]local-user oohun service-type ppp
[R4-aaa]int s4/0/1[R4-Serial4/0/1]ppp authentication-mode pap
[R2]int s4/0/0
[R2-Serial4/0/0]ppp pap local-user oohun password cipher 123456[R4]aaa
[R4-aaa]local-user oohun privilege level 15 password cipher 123456
[R4-aaa]local-user oohun service-type ppp
[R4-aaa]int s3/0/0
[R4-Serial3/0/0]ppp authentication-mode chap[R3]int s4/0/0
[R3-Serial4/0/0]ppp chap password cipher 123456
[R3-Serial4/0/0]ppp chap user oohun

四、构建MGRE环境，R1ip地址固定

[R1]int Tunnel0/0/0
[R1-Tunnel0/0/0]ip add 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 
[R1-Tunnel0/0/0]nhrp network-id 100[R2]int t0/0/0
[R2-Tunnel0/0/0]ip a 10.1.1.2 24
[R2-Tunnel0/0/0]tunnel-protocol gre p2mp
[R2-Tunnel0/0/0]source s4/0/0
[R2-Tunnel0/0/0]nhrp network-id 100
[R2-Tunnel0/0/0]nhrp entry 10.1.1.1 14.1.1.1 register[R3]int t0/0/0
[R3-Tunnel0/0/0]ip a 10.1.1.3 24
[R3-Tunnel0/0/0]tunnel-protocol gre p2mp
[R3-Tunnel0/0/0]source s4/0/0
[R3-Tunnel0/0/0]nhrp network-id 100
[R3-Tunnel0/0/0]nhrp entry 10.1.1.1 14.1.1.1 register

五、在公网接口上设置NAT

[R1]acl 2000
[R1-acl-basic-2000]rule permit source 192.168.1.0 0.0.0.255
[R1-acl-basic-2000]int s4/0/0
[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-acl-basic-2000]int s4/0/0
[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-acl-basic-2000]int s4/0/0
[R3-Serial4/0/0]nat outbound 2000

六、配置RIP，获取路由，使所有PC可以互相访问

[R1]rip 1
[R1-rip-1]ver 2
[R1-rip-1]network 10.0.0.0
[R1-rip-1]network 192.168.1.0
[R1-rip-1]int t0/0/0
[R1-Tunnel0/0/0]undo rip split-horizon        #实现三个局域网全网互通[R2]rip 1
[R2-rip-1]ver 2
[R2-rip-1]network 10.0.0.0
[R2-rip-1]network 192.168.2.0[R3]rip 1
[R3-rip-1]ver 2
[R3-rip-1]network 10.0.0.0
[R3-rip-1]network 192.168.3.0

实验测试