第五天实验

1,R6为ISP只能配置IP地址，R1-R5的环回为私有网段

2, R67A15万全连的NGRE结构，R1323力星型的拓扑结构，Riz为中心站点

3,所有私有网段可以互相通讯,私有网段使用05PF完成

[r1]int g 0/0/0
[r1-GigabitEthernet0/0/0]ip address 116.0.0.1 24
[r1-GigabitEthernet0/0/0]int g 0/0/1
[r1-GigabitEthernet0/0/1]ip address 16.0.0.1 24
[r1-GigabitEthernet0/0/1]int l0
[r1-LoopBack0]ip address 192.168.1.1 24

 [r2]int g 0/0/0
[r2-GigabitEthernet0/0/0]ip add 26.0.0.1 24
[r2-GigabitEthernet0/0/0]int l0
[r2-LoopBack0]ip add 192.168.2.1 24

[r3]int g 0/0/0
[r3-GigabitEthernet0/0/0]ip add 36.0.0.1 24
[r3-GigabitEthernet0/0/0]int l0
[r3-LoopBack0]ip add 192.168.3.1 24

 [r4]int g 0/0/0
[r4-GigabitEthernet0/0/0]ip add 46.0.0.1 24
[r4-GigabitEthernet0/0/0]int l0
[r4-LoopBack0]ip add 192.168.4.1 24

[r5]int g 0/0/0
[r5-GigabitEthernet0/0/0]ip add 56.0.0.1 24
[r5-GigabitEthernet0/0/0]int l0
[r5-LoopBack0]ip add 192.168.5.1 24

  [isp]int g 0/0/0
[isp-GigabitEthernet0/0/0]ip add 16.0.0.2 24
[isp-GigabitEthernet0/0/0]int g 0/0/1
[isp-GigabitEthernet0/0/1]ip add 116.0.0.2 24
[isp-GigabitEthernet0/0/1]int g 0/0/2
[isp-GigabitEthernet0/0/2]ip add 26.0.0.2 24
[isp-GigabitEthernet0/0/2]int g 2/0/0
[isp-GigabitEthernet2/0/0]ip add 36.0.0.2 24
[isp-GigabitEthernet2/0/0]int g 3/0/0
[isp-GigabitEthernet3/0/0]ip add 46.0.0.2 24
[isp-GigabitEthernet3/0/0]int g 4/0/0
[isp-GigabitEthernet4/0/0]ip add 56.0.0.2 24

给每一台路由配置环回

[R1]ip route-static 0.0.0.0 0 16.0.0.2
[R1]ip route-static 0.0.0.0 0 116.0.0.2
[R2]ip route-static 0.0.0.0 0 26.0.0.2
[R3]ip route-static 0.0.0.0 0 36.0.0.2
[R4]ip route-static 0.0.0.0 0 46.0.0.2
[R5]ip route-static 0.0.0.0 0 56.0.0.2 

[r1]int t0/0/0
[r1-Tunnel0/0/0]ip add 10.0.0.1 24    
[r1-Tunnel0/0/0]tunnel-protocol gre p2mp     
[r1-Tunnel0/0/0]source 16.0.0.1    
[r1-Tunnel0/0/0]nhrp network-id 100    
[r1-Tunnel0/0/0]nhrp entry multicast dynamic 

r4]int t0/0/0
[r4-Tunnel0/0/0]tunnel-protocol gre p2mp     
[r4-Tunnel0/0/0]source 46.0.0.1    
[r4-Tunnel0/0/0]nhrp network-id 100
[r4-Tunnel0/0/0]ip add 10.0.0.2 24    
[r4-Tunnel0/0/0]tunnel-protocol gre p2mp     
[r4-Tunnel0/0/0]source 46.0.0.1     
[r4-Tunnel0/0/0]nhrp network-id 100
[r4-Tunnel0/0/0]nhrp entry multicast dynamic 

[R1-Tunnel0/0/0]nhrp entry 10.0.0.2 46.0.0.1 register 
[R1-Tunnel0/0/0]nhrp entry 10.0.0.3 56.0.0.1 register 
[R4-Tunnel0/0/0]nhrp entry 10.0.0.1 16.0.0.1 register 
[R4-Tunnel0/0/0]nhrp entry 10.0.0.3 56.0.0.1 register 
[R5-Tunnel0/0/0]nhrp entry 10.0.0.1 16.0.0.1 register 
[R5-Tunnel0/0/0]nhrp entry 10.0.0.2 46.0.0.1 register

[R2]int t 0/0/0
[R2-Tunnel0/0/0]ip add 11.0.0.2 24
[R2-Tunnel0/0/0]tunnel-protocol gre p2mp 
[R2-Tunnel0/0/0]source GigabitEthernet 0/0/0
[R2-Tunnel0/0/0]nhrp network-id 200
[R2-Tunnel0/0/0]nhrp entry 11.0.0.1 116.0.0.1 register 

构建ospf 

[R1]ospf 1 router-id 1.1.1.1
[R1-ospf-1]a 0
[R1-ospf-1-area-0.0.0.0]network 192.168.1.0 0.0.0.255
[R1-ospf-1-area-0.0.0.0]network 10.0.0.0 0.0.0.255
[R1-ospf-1-area-0.0.0.0]network 11.0.0.0 0.0.0.255

 [R2]ospf 1 router-id 2.2.2.2
[R2-ospf-1]a 0
[R2-ospf-1-area-0.0.0.0]network 192.168.2.0 0.0.0.255
[R2-ospf-1-area-0.0.0.0]network 11.0.0.0 0.0.0.255

[R3]ospf 1 router-id 3.3.3.3
[R3-ospf-1]a 0
[R3-ospf-1-area-0.0.0.0]network 192.168.3.0 0.0.0.255
[R3-ospf-1-area-0.0.0.0]network 11.0.0.0 0.0.0.255

[R4]ospf 1 router-id 4.4.4.4
[R4-ospf-1]a 0
[R4-ospf-1-area-0.0.0.0]network 192.168.4.0 0.0.0.255
[R4-ospf-1-area-0.0.0.0]network 10.0.0.0 0.0.0.255

[R5]ospf 1 router-id 5.5.5.5
[R5-ospf-1]a 0
[R5-ospf-1-area-0.0.0.0]network 192.168.5.0 0.0.0.255
[R5-ospf-1-area-0.0.0.0]network 10.0.0.0 0.0.0.255 

修改R1/R2/R3的mgre下ospf的工作模式为broadcast，让R2，R3放弃选举或者直接让R1/R2/R3的ospf网络类型改为p2mp，R2/R3优先级改为0，放弃选举

[R1-Tunnel0/0/1]ospf network-type broadcast
[R2-Tunnel0/0/0]ospf network-type broadcast
[R2-Tunnel0/0/0]ospf network-type broadcast
[R2-Tunnel0/0/0]ospf dr-priority 0
[R3-Tunnel0/0/0]ospf dr-priority 0

最后将所有的OSPF网络类型设置为P2MP