MGRE-OSPF实验

一、实验要求

 

二、分析

由要求可知，r1/r2/r3为 星型拓扑，所以需要注意两个问题

1.网络类型如果为P2P的话，那么只能中心站点只能和一个路由器建立邻居关系，所以需要更改为

Broadcast类型。

2.让除了中心站点意外的路由器放弃选举。

三、配置

1.首先修改每个路由器的名称，以r1为例

[Huawei]sy r1
[r1]

2.给路由器配置IP地址以及缺省，以r1为例

[r1]interface g0/0/0
[r1-GigabitEthernet0/0/0]ip address 22.0.0.1 24
[r1]interface g0/0/1
[r1-GigabitEthernet0/0/1]ip address 12.0.0.1 24	
[r1]interface LoopBack 0	
[r1-LoopBack0]ip address 192.168.1.1 24
[r1]ip route-static 0.0.0.0 0 12.0.0.2
[r1]ip route-static 0.0.0.0 0 22.0.0.2

3.运行OSPF协议，以r1为例

[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 192.168.9.1 0.0.0.0

 4.配置r1/r2/r3的GRE环境

[r1-Tunnel0/0/1]ip address 192.168.10.1 24
[r1-Tunnel0/0/1]tunnel-protocol gre p2mp 
[r1-Tunnel0/0/1]source 22.0.0.1	
[r1-Tunnel0/0/1]nhrp network-id 110	
[r1-Tunnel0/0/1]nhrp entry multicast dynamic

4.配置r1/4/5的全连MGRE

[r1]int t 0/0/0
[r1-Tunnel0/0/0]ip address 192.168.9.1 24
[r1-Tunnel0/0/0]tunnel-protocol gre p2mp
[r1-Tunnel0/0/0]source 12.0.0.1
[r1-Tunnel0/0/0]nhrp network-id 100
[r1-Tunnel0/0/0]nhrp entry multicast dynamic 
[r1]display nhrp peer all 
------------------------------------------------------------------------------- 
Protocol-addr   Mask  NBMA-addr       NextHop-addr    Type         Flag         
------------------------------------------------------------------------------- 
192.168.9.2     32    52.0.0.1        192.168.9.2     dynamic      route tunnel 
------------------------------------------------------------------------------- 
Tunnel interface: Tunnel0/0/0
Created time    : 00:26:46
Expire time     : 01:33:14
------------------------------------------------------------------------------- 
Protocol-addr   Mask  NBMA-addr       NextHop-addr    Type         Flag         
------------------------------------------------------------------------------- 
192.168.9.3     32    62.0.0.1        192.168.9.3     dynamic      route tunnel 
------------------------------------------------------------------------------- 
Tunnel interface: Tunnel0/0/0
Created time    : 00:26:31
Expire time     : 01:33:29

Number of nhrp peers: 2

四、测试

r1的路由表

[r1]display ospf peer brief 

	 OSPF Process 1 with Router ID 1.1.1.1
		  Peer Statistic Information
 ----------------------------------------------------------------------------
 Area Id          Interface                        Neighbor id      State    
 0.0.0.0          Tunnel0/0/0                      4.4.4.4          Full        
 0.0.0.0          Tunnel0/0/0                      5.5.5.5          Full        

全网可达

<r1>ping  192.168.4.1
  PING 192.168.4.1: 56  data bytes, press CTRL_C to break
    Reply from 192.168.4.1: bytes=56 Sequence=1 ttl=255 time=40 ms
    Reply from 192.168.4.1: bytes=56 Sequence=2 ttl=255 time=30 ms
    Reply from 192.168.4.1: bytes=56 Sequence=3 ttl=255 time=20 ms
    Reply from 192.168.4.1: bytes=56 Sequence=4 ttl=255 time=30 ms
    Reply from 192.168.4.1: bytes=56 Sequence=5 ttl=255 time=20 ms