实验：
01拓扑：
02解决方法：
- 多进程双向重分布
- 创建tunnel通道，宣告到区域0
- 创建虚链接
03实验过程
1.方法1：多进程双向重分布
(1)重新启动另一个OSPF进程
(2)在2个OSPF进程中宣告不连续的网段
(3)双向发布OSPF进程：redistribute ospf 进程号 subnets
R1: int s1/0 ip add 1.1.1.1 255.255.255.0 no shutdown exit router ospf 110 router-id 1.1.1.1 network 1.1.1.0 0.0.0.255 area 0 R2: int s1/0 ip add 1.1.1.2 255.255.255.0 no shutdown int s1/1 ip add 2.2.2.1 255.255.255.0 no shutdown router ospf 110 router-id 2.2.2.2 network 2.2.2.0 0.0.0.255 area 1 network 1.1.1.0 0.0.0.255 area 0 R3: int s1/1 ip add 2.2.2.2 255.255.255.0 no shutdown int s1/0 ip add 3.3.3.1 255.255.255.0 no shutdown router ospf 110 router-id 3.3.3.3 network 2.2.2.0 0.0.0.255 area 1 redistribute ospf 120 subnets router ospf 120 ruoter-id 3.3.3.5 network 3.3.3.0 0.0.0.255 area 2 redistribute ospf 110 subnets R4: int s1/0 ip add 3.3.3.2 255.255.255.0 no shutdown router ospf 120 router-id 4.4.4.4 network 3.3.3.0 0.0.0.255 area 2
验证：
R1上查看路由表：
R4上查看路由表情况：
ping测试：
2.创建tunnel通道宣告到区域0
: int s1/0 ip add 1.1.1.1 255.255.255.0 no shutdown exit router ospf 110 router-id 1.1.1.1 network 1.1.1.0 0.0.0.255 area 0 R2: int s1/0 ip add 1.1.1.2 255.255.255.0 no shutdown int s1/1 ip add 2.2.2.1 255.255.255.0 no shutdown int tunnel 1 tunnel source 2.2.2.1 tunnel destination 2.2.2.2 ip add 172.16.1.1 255.255.255.0 no shutdown router ospf 110 router-id 2.2.2.2 network 2.2.2.0 0.0.0.255 area 1 network 1.1.1.0 0.0.0.255 area 0 network 172.16.1.0 0.0.0.255 area 0 R3: int s1/1 ip add 2.2.2.2 255.255.255.0 no shutdown int s1/0 ip add 3.3.3.1 255.255.255.0 no shutdown int tunnel 1 tunnel source 2.2.2.2 tunnel destination 2.2.2.1 ip add 172.16.1.2 255.255.255.0 no shut router ospf 110 router-id 3.3.3.3 network 2.2.2.0 0.0.0.255 area 1 network 3.3.3.0 0.0.0.255 area 2 network 172.16.1.0 0.0.0.255 area 0 R4: int s1/0 ip add 3.3.3.2 255.255.255.0 no shutdown router ospf 110 router-id 4.4.4.4 network 3.3.3.0 0.0.0.255 area 2 验证： R1上查看路由表：
R4上查看路由表：
ping测试：
3.创建虚链路
R1: int s1/0 ip add 1.1.1.1 255.255.255.0 no shutdown exit router ospf 110 router-id 1.1.1.1 network 1.1.1.0 0.0.0.255 area 0 R2: int s1/0 ip add 1.1.1.2 255.255.255.0 no shutdown int s1/1 ip add 2.2.2.1 255.255.255.0 no shutdown router ospf 110 router-id 2.2.2.2 network 2.2.2.0 0.0.0.255 area 1 network 1.1.1.0 0.0.0.255 area 0 area 1 virtual-link 3.3.3.3 R3: int s1/1 ip add 2.2.2.2 255.255.255.0 no shutdown int s1/0 ip add 3.3.3.1 255.255.255.0 no shutdown router ospf 110 router-id 3.3.3.3 network 2.2.2.0 0.0.0.255 area 1 network 3.3.3.0 0.0.0.255 area 2 area 1 virtual-link 2.2.2.2 R4: int s1/0 ip add 3.3.3.2 255.255.255.0 no shutdown router ospf 110 router-id 4.4.4.4 network 3.3.3.0 0.0.0.255 area 2
验证：
R1上查看路由表：
R4上查看路由表：
ping 测试：
至此实验完成，大家可以通过实验验证效果，有什么问题可以加群多交流。
