20-高级路由：OSPF -特殊区域 GRE

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第七_感 2018-07-07 13:07:08 博主文章分类：高级路由 ©著作权

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一、实验拓扑：二、命令部署： 1、R1和R3部署隧道：分别给R1、R3上隧道配地址、设置Tunnel的源地址、目的地址、模式、静态路由 R3(config)#interface tunnel 3 R3(config-if)#ip add 31.1.1.3 255.255.255.0 R3(config-if)#tunnel source 3.3.3.3 可以是环回口地址： R3(config-if)#tunnel destination 1.1.1.1 R3(config-if)#tunnel mode gre ip R3#show run int tunnel 3 //查看tunnel的配置 R3#ping 1.1.1.1 source 3.3.3.3 //tunnel的源目地址是否可以ping通

R3(config)#ip route 1.1.1.1 255.255.255.255 13.1.1.1

同理：R1部署Tunnel R1(config)#interface tunnel 1 R1(config-if)#ip add 31.1.1.1 255.255.255.0 R1(config-if)#tunnel source 1.1.1.1 R1(config-if)#tunnel destination 3.3.3.3 R1(config-if)#tunnel mode gre ip

R1(config)#ip route 3.3.3.3 255.255.255.255 13.1.1.3

2、将Tunnel网段地址到Area 0 R3(config)#router ospf 110 R3(config-router)#network 31.1.1.0 0.0.0.255 area 0

R1(config)#router ospf 110 R1(config-router)#network 31.1.1.0 0.0.0.255 area 0

三、验证： 1、配置验证： ①查看Tunnel配置 R3#show run int tunnel 3 interface Tunnel3 ip address 31.1.1.3 255.255.255.0 tunnel source 3.3.3.3 tunnel destination 1.1.1.1 ②Tunnel的源目是否可以Ping通 R3#ping 1.1.1.1 source 3.3.3.3 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 1.1.1.1, timeout is 2 seconds: Packet sent with a source address of 3.3.3.3 !!!!! ③部署静态路由到1.1.1.1，因为不允许将Tunnel的IP地址和源目同时宣告进OSPF，否则将会是Tunnel一会起来，一会挂掉。 R3#show ip route 1.0.0.0/32 is subnetted, 1 subnets S 1.1.1.1 [1/0] via 13.1.1.1 2、部署完成后，查看R5否有对方路由条目： R5#show ip route ospf 2.0.0.0/32 is subnetted, 1 subnets O IA 2.2.2.2 [110/11114] via 35.1.1.3, 00:00:34, FastEthernet0/0 4.0.0.0/32 is subnetted, 1 subnets O IA 4.4.4.4 [110/11115] via 35.1.1.3, 00:00:34, FastEthernet0/0 24.0.0.0/24 is subnetted, 1 subnets O IA 24.1.1.0 [110/11114] via 35.1.1.3, 00:00:34, FastEthernet0/0 12.0.0.0/24 is subnetted, 1 subnets O IA 12.1.1.0 [110/11113] via 35.1.1.3, 00:00:34, FastEthernet0/0 13.0.0.0/24 is subnetted, 1 subnets O IA 13.1.1.0 [110/2] via 35.1.1.3, 00:05:20, FastEthernet0/0 31.0.0.0/24 is subnetted, 1 subnets O IA 31.1.1.0 [110/11112] via 35.1.1.3, 00:05:20, FastEthernet0/0

R2#show ip route ospf 35.0.0.0/24 is subnetted, 1 subnets O IA 35.1.1.0 [110/11113] via 12.1.1.1, 00:02:26, FastEthernet0/0 4.0.0.0/32 is subnetted, 1 subnets O 4.4.4.4 [110/2] via 24.1.1.4, 00:39:03, FastEthernet1/0 5.0.0.0/32 is subnetted, 1 subnets O IA 5.5.5.5 [110/11114] via 12.1.1.1, 00:02:26, FastEthernet0/0 13.0.0.0/24 is subnetted, 1 subnets O IA 13.1.1.0 [110/2] via 12.1.1.1, 00:02:26, FastEthernet0/0 31.0.0.0/24 is subnetted, 1 subnets O 31.1.1.0 [110/11112] via 12.1.1.1, 00:02:26, FastEthernet0/0

R5#ping 2.2.2.2 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 2.2.2.2, timeout is 2 seconds: !!!!!