Mgre+Ospf 综合实验-优快云博客

本文链接：https://blog.youkuaiyun.com/Shakespeare_i/article/details/125767603

本文详细描述了R1作为中心节点的网络配置，包括R1至R5的私有网段IP设置，MGRE结构的全连接，以及OSPF在各私网段间的路由传递。涉及配置缺省路由、MGRE隧道、星型和广播拓扑、OSPF区域划分。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

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。

1.按图配置路由，写缺省路由

[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

R1/4/5为全连的MGRE结构，


[r1-Tunnel0/0/0]int t0/0/1
[r1-Tunnel0/0/1]ip a 192.168.6.1 24
[r1-Tunnel0/0/1]tunnel-protocol gre p2mp 
[r1-Tunnel0/0/1]source 116.0.0.1   
[r1-Tunnel0/0/1]nhrp network-id 110
[r1-Tunnel0/0/1]nhrp entry multicast dynamic 
[r1-Tunnel0/0/1]nhrp entry 192.168.6.2 46.0.0.1   register
[r1-Tunnel0/0/1]nhrp entry 192.168.6.3 56.0.0.1 register

[r4]int t0/0/0
[r4-Tunnel0/0/0]ip a 192.168.6.2 24
[r4-Tunnel0/0/0]tunnel-protocol  gre  p2mp 
[r4-Tunnel0/0/0]source 46.0.0.1
[r4-Tunnel0/0/0]nhrp entry multicast dynamic 
[r4-Tunnel0/0/0]nhrp  network-id 110
[r4-Tunnel0/0/0]nhrp entry 192.168.6.1 116.0.0.1 register
[r4-Tunnel0/0/0]nhrp entry 192.168.6.3 56.0.0.1  register

[r5]int t0/0/0
[r5-Tunnel0/0/0]ip a 192.168.6.3 24
[r5-Tunnel0/0/0]tunnel-protocol gre  p2mp 
[r5-Tunnel0/0/0]source 56.0.0.1
[r5-Tunnel0/0/0]nhrp network-id 110
[r5-Tunnel0/0/0]nhrp entry multicast dynamic 
[r5-Tunnel0/0/0]nhrp entry  192.168.6.1 116.0.0.1 register
[r5-Tunnel0/0/0]nhrp entry 192.168.6.2 46.0.0.1 register

结果

R1/2/3为星型的拓扑结构，R1为中心站点

[r1]
[r1]int t0/0/0.
[r1-Tunnel0/0/0]ip a 192.168.7.1 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

[r2]int t0/0/1
[r2-Tunnel0/0/1]ip a 192.168.7.2 24
[r2-Tunnel0/0/1]tunnel-protocol gre p2mp 
[r2-Tunnel0/0/1]source GigabitEthernet 0/0/0
[r2-Tunnel0/0/1]nhrp network-id 100
[r2-Tunnel0/0/1]nhrp entry 192.168.7.1 16.0.0.1 register

[r3]int t0/0/0
[r3-Tunnel0/0/0]ip a 192.168.7.3 24
[r3-Tunnel0/0/0]tunnel-protocol gre p2mp 
[r3-Tunnel0/0/0]source GigabitEthernet 0/0/0
[r3-Tunnel0/0/0]nhrp network-id 100
[r3-Tunnel0/0/0]nhrp entry 192.168.7.1 16.0.0.1 register

验证

[r1-Tunnel0/0/0]display nhrp peer all

.所有私有网段可以互相通讯，私有网段使用OSPF完成

5个路由分别做ospf配置，加入区域0


[r1]ospf 1 router-id 1.1.1.1
[r1-ospf-1]area 0
[r1-ospf-1-area-0.0.0.0]network  192.168.1.0 0.0.0.255
[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]osp
[r2]ospf 1
[r2]ospf 1 r
[r2]ospf 1 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 192.168.7.0 0.0.0.255

[r3]
[r3]ospf 1 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 192.168.7.0 0.0.0.255


[r4]ospf 1 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 192.168.6.0 0.0.0.255

[r5]os
[r5]ospf 1
[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 192.168.6.0 0.0.0.255

BMA(以太网)	Broadcast，可以建立多个邻居关系。需要进行DR和 BDR选举，hello 10s，deadtime40S
	P2MP，可以建立多个邻居关系，不需要进行DR和BDR的选举，hello 30s，deadtime120S。会学习邻居接口的主机路由。

r1 4 5改为 broadcast

[r1-Tunnel0/0/1]ospf network-type broadcast

r4 r5 同上

r123这里选择都改为p2mp模式

[r3]int t0/0/0
[r3-Tunnel0/0/0]ospf network-type p2mp

r1 r2 同上

结果