實驗四OSPF一

1、 三個區域分別爲0,1,2，分別都有環回R2的環回放在區域0裏，R3的環回放在區域2裏。
2、 R2ping55.55.55.55走S4/0/0口
3、 R1的10.0.12.1成爲DR
4、 在R1,R2,R3上開啓認證
1、 所有的路由器起ospf協議
2、 修改G0/0/1的cost值

3、 修改R1G0/0/0接口的優先級爲2

4、 在R1、R2、R3上開啓認證，開啓一個，其他路由器之間的關係會down掉

R2配置：

nterface Serial4/0/0
 link-protocol ppp
 ip address 10.0.34.1 255.255.255.0 
#
interface Serial4/0/1
 link-protocol ppp
#
interface GigabitEthernet0/0/0
 ip address 10.0.24.1 255.255.255.0 
#
interface GigabitEthernet0/0/1
 ip address 10.0.12.2 255.255.255.0 
 ospf cost 50
#
interface GigabitEthernet0/0/2
#
interface NULL0
#
interface LoopBack0
 ip address 2.2.2.2 255.255.255.255 
#
ospf 1 router-id 2.2.2.2 
 area 0.0.0.0 
  authentication-mode simple plain huawei 
  network 2.2.2.2 0.0.0.0 
  network 10.0.12.2 0.0.0.0 
  network 10.0.34.1 0.0.0.0 
 area 0.0.0.1 
  network 10.0.24.1 0.0.0.0 

R1:配置：

在這裏插入圖片描述](https://img-blog.csdnimg.cn/20200331222245595.png) interface GigabitEthernet0/0/1
 ip address 10.0.13.1 255.255.255.0 
#
interface GigabitEthernet0/0/2
#
interface NULL0
#
interface LoopBack0
 ip address 1.1.1.1 255.255.255.255 
#
interface LoopBack1
 ip address 11.11.11.11 255.255.255.0 
#
ospf 1 router-id 1.1.1.1 
 area 0.0.0.0 
  authentication-mode simple plain huawei 
  network 1.1.1.1 0.0.0.0 
  network 10.0.12.1 0.0.0.0 
  network 10.0.13.1 0.0.0.0 
  network 11.11.11.11 0.0.0.0 
#
R3:
interface Serial4/0/0
 link-protocol ppp
 ip address 10.0.34.2 255.255.255.0 
#
interface Serial4/0/1
 link-protocol ppp
#
interface GigabitEthernet0/0/0
 ip address 10.0.35.1 255.255.255.0 
#
interface GigabitEthernet0/0/1
 ip address 10.0.13.2 255.255.255.0 
#
interface GigabitEthernet0/0/2
#
interface NULL0
#
interface LoopBack0
 ip address 3.3.3.3 255.255.255.255 
#
ospf 1 router-id 3.3.3.3 
 area 0.0.0.0 
  authentication-mode simple plain huawei 
  network 3.3.3.3 0.0.0.0 
  network 10.0.13.2 0.0.0.0 
  network 10.0.34.2 0.0.0.0 
 area 0.0.0.2 
  network 10.0.35.1 0.0.0.0 
#

R4:配置

#
interface GigabitEthernet0/0/1
 ip address 10.0.24.2 255.255.255.0 
interface LoopBack0
 ip address 4.4.4.4 255.255.255.255 
#
interface LoopBack1
 ip address 44.44.44.44 255.255.255.0 
#
ospf 1 router-id 4.4.4.4 
 area 0.0.0.1 
  network 4.4.4.4 0.0.0.0 
  network 10.0.24.2 0.0.0.0 
  network 44.44.44.44 0.0.0.0 
#

R5:配置

#
interface GigabitEthernet0/0/1
 ip address 10.0.35.2 255.255.255.0 
#
interface GigabitEthernet0/0/2
#
interface NULL0
#
interface LoopBack0
 ip address 5.5.5.5 255.255.255.255 
#
interface LoopBack1
 ip address 55.55.55.55 255.255.255.0 
#
ospf 1 router-id 5.5.5.5 
 area 0.0.0.2 
  network 5.5.5.5 0.0.0.0 
  network 10.0.35.2 0.0.0.0 
  network 55.55.55.55 0.0.0.0 
#