OSPF在MGRE环境下的实验

实验要求：

IP地址的规划及其配置 

按照下图进行IP地址配置

 R1

R2

 R3

R4

 R5

R6

 实现可访问公网

首先每台路由器写一条到R4的缺省路由，以R1为例

再进行NAT地址转换

搭建MGRE环境

R1-2-3星型结构MGRE搭建(R1为中心站点)

R1

[R1]int t0/0/0
[R1-Tunnel0/0/0]ip add 10.1.1.1 24
[R1-Tunnel0/0/0]tunnel-protocol gre p2mp 

[R1-Tunnel0/0/0]source 41.1.1.1
[R1-Tunnel0/0/0]nhrp entry multicast dynamic 
[R1-Tunnel0/0/0]nhrp network-id 100

R2 

[R2]int t0/0/0
[R2-Tunnel0/0/0]ip add 10.1.1.2 24
[R2-Tunnel0/0/0]tunnel-protocol gre p2mp 
[R2-Tunnel0/0/0]source g0/0/1
[R2-Tunnel0/0/0]nhrp entry 10.1.1.1 41.1.1.1 register 
[R2-Tunnel0/0/0]nhrp network-id 100

R3

[R3]int t0/0/0
[R3-Tunnel0/0/0]ip add 10.1.1.3 24
[R3-Tunnel0/0/0]tunnel-protocol gre p2mp 
[R3-Tunnel0/0/0]source g0/0/1
[R3-Tunnel0/0/0]nhrp entry 10.1.1.1 41.1.1.1 register 
[R3-Tunnel0/0/0]nhrp network-id 100

检测

 [r1]display nhrp peer all

 

R1-5-6全连网状MGRE搭建（R1 R5均为中心区域）

R1

[R1]int t0/0/1
[R1-Tunnel0/0/1]ip add 10.1.2.1 24
[R1-Tunnel0/0/1]tunnel-protocol gre p2mp 
[R1-Tunnel0/0/1]source 14.1.1.1
[R1-Tunnel0/0/1]nhrp entry multicast dynamic 
[R1-Tunnel0/0/1]nhrp network-id 110

R5

[R5]int t0/0/1
[R5-Tunnel0/0/1]ip add 10.1.2.2 24
[R5-Tunnel0/0/1]tunnel-protocol gre p2mp 
[R5-Tunnel0/0/1]source g0/0/1
[R5-Tunnel0/0/1]nhrp entry multicast dynamic 
[R5-Tunnel0/0/1]nhrp network-id 110 

R6

[R6]int t0/0/1
[R6-Tunnel0/0/1]ip add 10.1.2.3 24
[R6-Tunnel0/0/1]tunnel-protocol gre p2mp 
[R6-Tunnel0/0/1]source g0/0/1
[R6-Tunnel0/0/1]nhrp entry 10.1.2.1 14.1.1.1 register 
[R6-Tunnel0/0/1]nhrp entry 10.1.2.2 45.1.1.1 register  

检测

  [r5]display nhrp peer all

 

OSPF宣告

R1

[R1]ospf 1 router-id 1.1.1.1
[R1-ospf-1]area 0
[R1-ospf-1-area-0.0.0.0]network 10.1.1.0 0.0.0.255
[R1-ospf-1-area-0.0.0.0]network 192.168.1.0 0.0.0.255

R2

[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 10.1.1.0 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 10.1.1.0 0.0.0.255

R5

[R5]ospf 1 router-id 5.5.5.5
[R5-ospf-1]area 0 

[R5-ospf-1-area-0.0.0.0]network 192.168.4.0 0.0.0.255 
[R5-ospf-1-area-0.0.0.0]network 10.1.1.0 0.0.0.255

R6

[R6]ospf 1 router-id 6.6.6.6
[R6-ospf-1]area 0
[R6-ospf-1-area-0.0.0.0]network 192.168.5.0 0.0.0.255 
[R6-ospf-1-area-0.0.0.0]network 10.1.2.0 0.0.0.255

MGRE环境中，OSPF接口工作方式修改 

R1-2-3星型结构修改为p2mp类型

R1

[R1]int t0/0/0

[R1-Tunnel0/0/0]ospf network-type p2mp

R2

[R2]int t0/0/0

[R2-Tunnel0/0/0]ospf network-type p2mp 

R3

[R3]int t0/0/0

[R3-Tunnel0/0/0]ospf network-type p2mp 

R1-5-6全连网状结构修改为broadcast类型

R1

[R1]int t0/0/1

[R1-Tunnel0/0/1]ospf network-type broadcast 

R5

[R5]int t0/0/1

[R5-Tunnel0/0/1]ospf network-type broadcast 

R6

[R6]int t0/0/1

[R6-Tunnel0/0/1]ospf network-type broadcast 

检测

<R1>display ospf peer brief 

 

 <R1>display ip routing-table protocol ospf

最后再用电脑测试