OSPF在MGRE上的实验

实验题目如下:

 

实验拓扑如下:

OSPF在MGRE上的实验_第1张图片

 实验要求如下:

【1】R6为ISP只能配置ip地址,R1-5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协议完成

实验思路如下:

(1)合理的IP配置

(2)公网全网可达,需要做到在R1~R5写静态缺省指向ISP

(3)要求二:R1/4/5为全连的MGRE结构

        解释如下:

                此处的三个IP都需要为固定IP

(4)要求二:R1/2/3为星型的拓扑结构

        对于星型拓扑结构的解释:

                只需要一个固定的公有IP作为中心站点,其余可以使用不固定的公有IP作为分支

(5)当使用OSPF协议完成私有网段后,需要划分到同一区域进行宣告身边的私有网段

实验步骤如下:

1、实现公网的全网可达(书写缺省路由)

指令如下:

R1:

ip route-static 0.0.0.0 0.0.0.0 16.1.1.2
ip route-static 0.0.0.0 0.0.0.0 61.1.1.2

R2:

ip route-static 0.0.0.0 0.0.0.0 26.1.1.2

R3:

ip route-static 0.0.0.0 0.0.0.0 36.1.1.2

R4:

ip route-static 0.0.0.0 0.0.0.0 46.1.1.2

R5:

ip route-static 0.0.0.0 0.0.0.0 56.1.1.2

2、要求二:R1/4/5为全连MGRE结构

指令如下:

R1:

[R1]interface Tunnel 0/0/0
[R1-Tunnel0/0/0]ip add 192.168.6.1 24
[R1-Tunnel0/0/0]tunnel-protocol gre p2mp 
[R1-Tunnel0/0/0]source 16.1.1.1
[R1-Tunnel0/0/0]nhrp entry 192.168.6.4 46.1.1.1 register
[R1-Tunnel0/0/0]nhrp entry 192.168.6.5 56.1.1.1 register
[R1-Tunnel0/0/0]nhrp network-id 100

R4:

[R4]interface Tunnel 0/0/0
[R4-Tunnel0/0/0]ip add 192.168.6.4 24
[R4-Tunnel0/0/0]tunnel-protocol gre p2mp 
[R4-Tunnel0/0/0]source 46.1.1.1
[R4-Tunnel0/0/0]nhrp entry 192.168.6.1 16.1.1.1 register 
[R4-Tunnel0/0/0]nhrp entry 192.168.6.5 56.1.1.1 register
[R4-Tunnel0/0/0]nhrp network-id 100

R5:

[R5]interface Tunnel 0/0/0
[R5-Tunnel0/0/0]ip add 192.168.6.5 24
[R5-Tunnel0/0/0]tunnel-protocol gre p2mp 
[R5-Tunnel0/0/0]source 56.1.1.1
[R5-Tunnel0/0/0]nhrp entry 192.168.6.1 16.1.1.1 register
[R5-Tunnel0/0/0]nhrp entry 192.168.6.4 46.1.1.1 register
[R5-Tunnel0/0/0]nhrp network-id 100

3、要求二:R1/2/3为星型拓扑结构

指令如下:

R1:

[R1]interface Tunnel 0/0/1
[R1-Tunnel0/0/1]ip add 192.168.7.1 24
[R1-Tunnel0/0/1]tunnel-protocol gre p2mp 
[R1-Tunnel0/0/1]source 61.1.1.1
[R1-Tunnel0/0/1]nhrp entry multicast dynamic 
[R1-Tunnel0/0/1]nhrp network-id 10

R2:

[R2]interface Tunnel 0/0/1
[R2-Tunnel0/0/1]ip add 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 entry 192.168.7.1 61.1.1.1 register 
[R2-Tunnel0/0/1]nhrp network-id 10

R3:

[R3]interface Tunnel 0/0/1
[R3-Tunnel0/0/1]ip add 192.168.7.3 24
[R3-Tunnel0/0/1]tunnel-protocol gre p2mp 
[R3-Tunnel0/0/1]source GigabitEthernet 0/0/0
[R3-Tunnel0/0/1]nhrp entry 192.168.7.1 61.1.1.1 register 
[R3-Tunnel0/0/1]nhrp network-id 10

4、使用OSPF协议完成私有网段

指令如下:

R1:

[R1]ospf 1 router-id 1.1.1.1
[R1-ospf-1]ar	
[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:

[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:

[R4]ospf 1 router-id 4.4.4.4
[R4-ospf-1]area 0
[R4-ospf-1-area-0.0.0.0]ne	
[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:

[R5]ospf 1 router-id 5.5.5.5
[R5-ospf-1]area 0
[R5-ospf-1-area-0.0.0.0]ne	
[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

5、让R2和R3退出选举(修改接口)

指令如下:

R1:

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

R2:

[R2]interface Tunnel 0/0/1
[R2-Tunnel0/0/1]ospf network-type broadcast 
[R2-Tunnel0/0/1]ospf dr-priority 0

R3:

[R3]int Tunnel 0/0/1
[R3-Tunnel0/0/1]ospf network-type broadcast 
[R3-Tunnel0/0/1]ospf dr-priority 0

R4:

[R4]int Tunnel 0/0/0
[R4-Tunnel0/0/0]ospf network-type broadcast 

R5:

[R5]int Tunnel 0/0/0
[R5-Tunnel0/0/0]ospf network-type broadcast 

测试如下:

IP配置:

OSPF在MGRE上的实验_第2张图片

路由配置完成:

OSPF在MGRE上的实验_第3张图片  OSPF在MGRE上的实验_第4张图片 

OSPF在MGRE上的实验_第5张图片

 全网的网状结构:OSPF在MGRE上的实验_第6张图片

 

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