完成OSPF环境下的MGRE实验

最新推荐文章于 2026-01-02 12:27:30 发布

原创最新推荐文章于 2026-01-02 12:27:30 发布 · 254 阅读

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#网络 #服务器 #运维

一、实验要求

1.R6为ISP只能配置IP地址，R1-R5的环回为私有网段；

2.R1/4/5为全连的MGRE结构，R1/2/3为星型的拓扑结构，R1为中心站点；

3.所有私有网段可以互相通讯，私有网段使用OSPF完成；

二、配置环回地址+接口IP

# R1
[r1]interface g0/0/0
[r1-GigabitEthernet0/0/0]ip address 1.1.0.1 30
[r1-GigabitEthernet0/0/0]interface g0/0/1
[r1-GigabitEthernet0/0/1]ip address 1.2.0.1 30
[r1]int l0
[r1-LoopBack0]ip add 192.168.1.1 24

# R2
[r2]interface g0/0/0
[r2-GigabitEthernet0/0/0]ip address 2.0.0.1 30
[r2-GigabitEthernet0/0/0]int l0
[r2-LoopBack0]ip address 192.168.2.1 24

# R3
[r3]interface g0/0/0
[r3-GigabitEthernet0/0/0]ip add 3.0.0.1 30
[r3-GigabitEthernet0/0/0]int l0
[r3-LoopBack0]ip add 192.168.3.1 24

# R4
[r4]interface g0/0/0
[r4-GigabitEthernet0/0/0]ip add 4.0.0.1 30
[r4-GigabitEthernet0/0/0]int l0
[r4-LoopBack0]ip add 192.168.4.1 24

# R5
[r5]interface g0/0/0
[r5-GigabitEthernet0/0/0]ip add 5.0.0.1 30
[r5-GigabitEthernet0/0/0]int l0
[r5-LoopBack0]ip add 192.168.5.1 24

# ISP
[ISP]interface g0/0/1
[ISP-GigabitEthernet0/0/1]ip add 1.2.0.2 30
[ISP-GigabitEthernet0/0/1]int g0/0/0
[ISP-GigabitEthernet0/0/0]ip add 1.1.0.2 30
[ISP-GigabitEthernet0/0/0]int g2/0/0
[ISP-GigabitEthernet2/0/0]ip add 2.0.0.2 30
[ISP-GigabitEthernet2/0/0]int g3/0/0
[ISP-GigabitEthernet3/0/0]ip add 3.0.0.2 30
[ISP-GigabitEthernet3/0/0]int g4/0/0
[ISP-GigabitEthernet4/0/0]ip add 4.0.0.2 30
[ISP-GigabitEthernet4/0/0]int g0/0/2
[ISP-GigabitEthernet0/0/2]ip add 5.0.0.2 30

三、配置指向公网的缺省路由

# R1
[r1]ip route-static 0.0.0.0 0 1.2.0.2
[r1]ip route-static 0.0.0.0 0 1.1.0.2

# R2
[r2]ip route-static 0.0.0.0 0 2.0.0.2

# R3
[r3]ip route-static 0.0.0.0 0 3.0.0.2

# R4
[r4]ip route-static 0.0.0.0 0 4.0.0.2

# R5
[r5]ip route-static 0.0.0.0 0 5.0.0.2

测试连通性：

四、做R1/4/5为全连的MGRE结构

# R1
[r1]int Tunnel 0/0/1
[r1-Tunnel0/0/1]ip address 192.168.7.1 24
[r1-Tunnel0/0/1]tunnel-protocol  gre p2mp
[r1-Tunnel0/0/1]source 1.2.0.1
[r1-Tunnel0/0/1]nhrp network-id 101
[r1-Tunnel0/0/1]nhrp entry 192.168.7.2 4.0.0.1 register
[r1-Tunnel0/0/1]nhrp entry 192.168.7.3 5.0.0.1 register

# R4
[r4]int Tunnel 0/0/1
[r4-Tunnel0/0/1]ip address 192.168.7.2 24
[r4-Tunnel0/0/1]tunnel-protocol  gre p2mp
[r4-Tunnel0/0/1]source 4.0.0.1
[r4-Tunnel0/0/1]nhrp network-id 101
[r4-Tunnel0/0/1]nhrp entry 192.168.7.1 1.2.0.1 register
[r4-Tunnel0/0/1]nhrp entry 192.168.7.3 5.0.0.1 register

# R5
[r5]int Tunnel 0/0/1
[r5-Tunnel0/0/1]ip add 192.168.7.3 24
[r5-Tunnel0/0/1]tunnel-protocol gre p2mp
[r5-Tunnel0/0/1]source 5.0.0.1
[r5-Tunnel0/0/1]nhrp network-id 101
[r5-Tunnel0/0/1]nhrp entry 192.168.7.1 1.2.0.1 register
[r5-Tunnel0/0/1]nhrp entry 192.168.7.2 4.0.0.1 register

查看nhrp映射表：

五、做R1/2/3为星型的拓扑结构，使R1为中心站点

R1中心配置：隧道网段设置为192.168.6.0/24

# R1
[r1]int Tunnel 0/0/0
[r1-Tunnel0/0/0]ip address 192.168.6.1 24
[r1-Tunnel0/0/0]tunnel-protocol gre p2mp
[r1-Tunnel0/0/0]nhrp network-id 100
[r1-Tunnel0/0/0]nhrp entry multicast dynamic
[r1-Tunnel0/0/0]source 1.1.0.1
[r1-Tunnel0/0/0]ospf network-type broadcast

# R2、R3分支配置
[r2]int Tunnel 0/0/0
[r2-Tunnel0/0/0]ip address 192.168.6.2 24
[r2-Tunnel0/0/0]tunnel-protocol gre p2mp
[r2-Tunnel0/0/0]source g0/0/0
[r2-Tunnel0/0/0]nhrp network-id 100
[r2-Tunnel0/0/0]nhrp entry 192.168.6.1 1.1.0.1 register
[r2-Tunnel0/0/0]ospf network-type broadcast

[r3]int Tunnel 0/0/0
[r3-Tunnel0/0/0]ip address 192.168.6.3 24
[r3-Tunnel0/0/0]tunnel-protocol gre p2mp
[r3-Tunnel0/0/0]source g0/0/0
[r3-Tunnel0/0/0]nhrp network-id 100
[r3-Tunnel0/0/0]nhrp entry 192.168.6.1 1.1.0.1 register
[r3-Tunnel0/0/0]ospf network-type broadcast

六、启用ospf

# R1
[r1]ospf router-id 1.1.1.1
[r1-ospf-1]area 0
[r1-ospf-1-area-0.0.0.0]network 192.168.1.0 0.0.0.0
[r1-ospf-1-area-0.0.0.0]network 192.168.6.0 0.0.0.255
[r1-ospf-1-area-0.0.0.0]network 192.168.7.0 0.0.0.255

# R2
[r2]ospf router-id 2.2.2.2
[r2-ospf-1]area 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 192.168.6.0 0.0.0.255

# R3
[r3]ospf router-id 3.3.3.3
[r3-ospf-1]area 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 192.168.6.0 0.0.0.255

# R4
[r4]ospf router-id 4.4.4.4
[r4-ospf-1]area 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 192.168.7.0 0.0.0.255

# R5
[r5]ospf router-id  5.5.5.5
[r5-ospf-1]area 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 192.168.7.0 0.0.0.255

测试：