一、实验拓扑
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之间使用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GRR
4、整个私有网络基本RIP全网可达
5、所有PC设置私有IP为源IP,可以访问R5环回,达到全网通
三、实验思路
1.按图配置物理口、串线口、R5环回口地址
2.R1和R5配置PPP协议及PAP验证方式 ,R2和R5配置PPP协议及chap验证方式,R3和R5协议更改为HDLC
3.除R5,其他路由器均配置缺省路由。保证公网通
4.R1、R2、R3间配置MGRE VPN,且R1为中心站点,R1、R4间配置GRE VPN
5.配置路由协议传递两端私网路由,本实验选用RIP协议
6.所有PC设置私有IP为源IP,可以访问R5环回,达到全网通,配置nat
四、实验步骤
1、配置物理口、串线口、R5环回口地址
R1
R2
R3
R4
R5
2、配置PPP协议PPP认证方式
[R5]aaa
[R5-aaa]local-user wzy password cipher wzy123
[R5-aaa]local-user wzy service-type ppp
[R5]int s4/0/1
[R5-Serial4/0/1]ppp authentication-mode pap
[R1]int s4/0/0
[R1-Serial4/0/0]ppp pap local-user wzy password cipher wzy123
[R1-Serial4/0/0]shutdown
[R1-Serial4/0/0]undo shutdown
3.配置PPP协议chap认证方式
[R5]int s3/0/1
[R5-Serial3/0/1]ppp authentication-mode chap
[R2]int s4/0/0
[R2-Serial4/0/0]ppp chap user wzy
[R2-Serial4/0/0]ppp chap password cipher wzy123
[R2-Serial4/0/0]shutdown
[R2-Serial4/0/0]undo shutdown
[R3-Serial4/0/0]link-protocol hdlc
[R5-Serial4/0/0]link-protocol hdlc
[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
测试公网通:
4.配置MGRE:
R1
[R1]int Tunnel 0/0/0
[R1-Tunnel0/0/0]ip add 10.1.1.1 24
[R1-Tunnel0/0/0]tunnel-protocol gre p2mp
[R1-Tunnel0/0/0]source 15.1.1.1
[R1-Tunnel0/0/0]nhrp network-id 1
R2
[R2]int Tunnel 0/0/0
[R2-Tunnel0/0/0]ip add 10.1.1.2 24
[R2-Tunnel0/0/0]tunnel-protocol gre p2mp
[R2-Tunnel0/0/0]source Serial 4/0/0
[R2-Tunnel0/0/0]nhrp network-id 1
[R2-Tunnel0/0/0]nhrp entry 10.1.1.1 15.1.1.1 register
R3
[R3]int Tunnel 0/0/0
[R3-Tunnel0/0/0]ip add 10.1.1.3 24
[R3-Tunnel0/0/0]tunnel-protocol gre p2mp
[R3-Tunnel0/0/0]source Serial 4/0/0
[R3-Tunnel0/0/0]nhrp network-id 1
[R3-Tunnel0/0/0]nhrp entry 10.1.1.1 15.1.1.1 register
5.配置GRE;
R1
[R1]int Tunnel 0/0/1
[R1-Tunnel0/0/1]ip add 10.1.2.1 24
[R1-Tunnel0/0/1]tunnel-protocol gre
[R1-Tunnel0/0/1]source 15.1.1.1
[R1-Tunnel0/0/1]description 45.1.1.4
R4
[R4]int Tunnel 0/0/1
[R4-Tunnel0/0/1]tunnel-protocol gre
[R4-Tunnel0/0/1]source 45.1.1.4
[R4-Tunnel0/0/1]destination 15.1.1.1
以R1为例
6.配置RIP协议,且在中心R1上开启伪广播,关闭R1、R2、R3、R4接口的水平分割
以R1和R2为例:
[R1]rip 1
[R1-rip-1]v 2
[R1-rip-1]undo summary
[R1-rip-1]network 192.168.1.0
[R1-rip-1]net 10.0.0.0
[R1-Tunnel0/0/0]nhrp entry multicast dynamic
[R1-Tunnel0/0/0]undo rip split-horizon
[R2]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
[R2-rip-1]int t0/0/0
[R2-Tunnel0/0/0]undo rip split-horizon
R2
R3R4
测试
以P1、R1为例:
7.配置nat
[R1]acl 2000
[R1-acl-basic-2000]rule permit source 192.168.1.0 0.0.0.255
[R1]int s4/0/0
[R1-Serial4/0/0]nat outbound 2000
测试全网通: