IP地址

r1

r2

 

r3

 

r4

 

hdlc封装

 

pap认证

r2

 

r3

 

chap认证

 r2

r4

 

 

MGRE

主认证
[r1]int Tunnel 0/0/0
[r1-Tunnel0/0/0]ip add 192.168.4.1 24
[r1-Tunnel0/0/0]tunnel-protocol gre p2mp
[r1-Tunnel0/0/0]source 12.1.1.1
[r1-Tunnel0/0/0]nhrp entry multicast dynamic 
[r1-Tunnel0/0/0]nhrp netw
[r1-Tunnel0/0/0]nhrp network-id 100
 

 被认证r3
[r3]int Tunnel 0/0/0
[r3-Tunnel0/0/0]ip add 192.168.4.2 24
[r3-Tunnel0/0/0]tunnel-protocol gre p2mp 
[r3-Tunnel0/0/0]source s4/0/0  
[r3-Tunnel0/0/0]nhrp entry 192.168.4.1 12.1.1.1 register 
[r3-Tunnel0/0/0]nhrp network-id 100

 被认证r4

[r4]int Tunnel 0/0/0
[r4-Tunnel0/0/0]ip add 192.168.4.3 24
[r4-Tunnel0/0/0]tunnel-protocol gre p2mp 
[r4-Tunnel0/0/0]source s4/0/0
[r4-Tunnel0/0/0]nhrp entry 192.168.4.1 12.1.1.1 register 
[r4-Tunnel0/0/0]nhrp network-id 100

 

rip宣告（宣告tunnel接口的ip因为tunnel口才是私网）

 r1

r3

 

r4

 

ping检验

pc1 1.2 ping pc2  2.2