GRE tunnl配置

IPSec VPNz 专题三：GRE Tunnel

环境：
1：R4/R5/R6:配置Static-route或是运行OSPF：
2：R4/R6：建立GRE Tunnel
3：将GRE Tunnel 的IP地址宣告进EIGRP:

步骤：
1：R4/R5/R6上分别配置动态路由：OSPF:      
router ospf 110
network 1.1.45.0 0.0.0.255 area 0
network 4.4.4.4 0.0.0.0 area 0
router ospf 110
network 1.1.45.0 0.0.0.255 area 0
network 1.1.56.0 0.0.0.255 area 0
network 5.5.5.5 0.0.0.0 area 0
router ospf 110
network 1.1.56.0 0.0.0.255 area 0
network 6.6.6.6 0.0.0.0 area 0

2:R4/R6上GRE Tunnel的配置:
==>R4的配置:
interface Tunnel0
ip address 172.16.10.4 255.255.255.0
tunnel source 4.4.4.4
tunnel destination 6.6.6.6
==>R6的配置:
interface Tunnel0
ip address 172.16.10.6 255.255.255.0
tunnel source 6.6.6.6
tunnel destination 4.4.4.4
3:R4/R6针对GRE Tunnel 启用路由协议:EIGRP:
router eigrp 90
network 172.16.10.0 0.0.0.255
network 192.168.1.0
no auto-summary
router eigrp 90
network 172.16.1.0 0.0.0.255
network 172.16.10.0 0.0.0.255
no auto-summary

4:各自的IP路由表如下:
R4#show ip route
O       1.1.56.0 [110/2] via 1.1.45.5, 00:11:46, FastEthernet1/1
O       5.5.5.5 [110/2] via 1.1.45.5, 00:11:46, FastEthernet1/1
O       6.6.6.6 [110/3] via 1.1.45.5, 00:11:46, FastEthernet1/1
D       172.16.1.0/24 [90/297246976] via 172.16.10.6, 00:11:31, Tunnel0 ：下一条指向Tunnel0：通过EIGRP路由学到
R6#show ip route
O       1.1.45.0 [110/2] via 1.1.56.5, 00:12:42, FastEthernet0/0
O       4.4.4.4 [110/3] via 1.1.56.5, 00:12:42, FastEthernet0/0
O       5.5.5.5 [110/2] via 1.1.56.5, 00:12:42, FastEthernet0/0
D    192.168.1.0/24 [90/297246976] via 172.16.10.4, 00:12:35, Tunnel0
R6#