OSPF配置知识总结3(多区域配置)

OSPF配置知识总结3(多区域配置)

1.相关解释:

要解决网络规模大了以后的问题:网络的扩展性,降低路由器负载,实现路由的更快收敛

OSPF多区域的区域类型分为Area 0(骨干区域),

以及非Area 0 (非骨干区域):

分区后,可以实现流量的分类并进行区隔:域内流量,域间流量,外部通讯流量

因为有不同区域,就有内部路由和毗连的区域边界路由器(ABR)

配置命令:network  只能宣告直连路由进入OSPF体系

                  import-route 能够宣告任何类型的路由进入OSPF体系,作为network配置的补充。

 2.思路

     .ENSP模型

     .规划RouterID

     .基本配置

     .多区域OSPF配置

3.eNSP模型

 

 

 4. 规划RouterID

RouterID规划(我个人想的方法)
X . X . X . X
区域码 . 工厂码 . 第几台 . 备用码

R1-ID:  20.1.1.0
R2-ID:     20.1.2.0
R3-ID:     20.1.3.0

R4-ID:     0.2.4.0

R5-ID:  0.2.5.0

R6-ID:     30.3.6.0

R7-ID:     30.3.7.0

5.基本配置

  各端口IP地址配置,PCIP地址配置

6.多区域OSPF配置

R1

#
interface GigabitEthernet0/0/0
ip address 192.168.20.254 255.255.255.0
#
interface GigabitEthernet0/0/1
ip address 192.168.12.1 255.255.255.0
#
interface GigabitEthernet0/0/2
ip address 192.168.13.1 255.255.255.0

#
ospf 1 router-id 20.1.1.0

area 0.0.0.20

network 192.168.12.0 0.0.0.255
network 192.168.13.0 0.0.0.255
network 192.168.20.0 0.0.0.255

R2

interface GigabitEthernet0/0/0
ip address 192.168.12.2 255.255.255.0
#
interface GigabitEthernet0/0/1
ip address 192.168.23.2 255.255.255.0

#
ospf 1 router-id 20.1.2.0

area 0.0.0.20

network 192.168.12.0 0.0.0.255
network 192.168.23.0 0.0.0.255

R3

#
interface GigabitEthernet0/0/0
ip address 192.168.23.3 255.255.255.0
#
interface GigabitEthernet0/0/1
ip address 192.168.13.3 255.255.255.0
#
interface GigabitEthernet0/0/2
ip address 192.168.34.3 255.255.255.0

ospf 1 router-id 20.1.3.0    //这是ABR路由器,横跨两个区域,这是与单区域OSPF的不同

area 0.0.0.0

network 192.168.34.0 0.0.0.255

area 0.0.0.20

network 192.168.13.0 0.0.0.255
network 192.168.23.0 0.0.0.255

R4

#
interface GigabitEthernet0/0/0
ip address 192.168.45.4 255.255.255.0
#
interface GigabitEthernet0/0/1
ip address 192.168.34.4 255.255.255.0

ospf 1 router-id 0.2.4.0

area 0.0.0.0

network 192.168.34.0 0.0.0.255
network 192.168.45.0 0.0.0.255

R5

#
interface GigabitEthernet0/0/0
ip address 192.168.56.5 255.255.255.0
#
interface GigabitEthernet0/0/1
ip address 192.168.45.5 255.255.255.0

ospf 1 router-id 0.2.5.0

area 0.0.0.0

network 192.168.45.0 0.0.0.255
network 192.168.56.0 0.0.0.255

R6

#
interface GigabitEthernet0/0/0
ip address 192.168.67.6 255.255.255.0
#
interface GigabitEthernet0/0/1
ip address 192.168.56.6 255.255.255.0

ospf 1 router-id 30.3.6.0   //这是ABR路由器,横跨两个区域,这是与单区域OSPF的不同。其他一样

area 0.0.0.0

network 192.168.56.0 0.0.0.255

area 0.0.0.30

network 192.168.67.0 0.0.0.255

stub   //设置30区为stub区,其他相关交换机所在区域都要设置;将在本区域无LSA5,如果要禁LSA3用Stub no-summary

 

R7

#
interface GigabitEthernet0/0/0
ip address 192.168.30.254 255.255.255.0
#
interface GigabitEthernet0/0/1
ip address 192.168.67.7 255.255.255.0

ospf 1 router-id 30.3.7.0

area 0.0.0.30

network 192.168.30.0 0.0.0.255
network 192.168.67.0 0.0.0.255

stub   //设置30区为stub区,其他相关交换机所在区域都要设置; 建立Stub区,是防止其他区域的不稳定波及本区域

 

7.引入静态路由的方法

 

AR8:用五类LSA

AR7和AR8通过静态路由连接,通往PC4:

[R7] ip route-static 192.168.40.0 24 192.168.78.8

OSPF只能与直连路由关联

#
ospf 1 router-id 30.3.7.0

area 0.0.0.30
network 192.168.30.0 0.0.0.255
network 192.168.67.0 0.0.0.255

 

 

而要把40.0网段的路由器关联进OSPF的路由器体系,要采用

ospf 1 router-id 30.3.7.0

import-route static 

 

[R7]dis ospf lsdb

OSPF Process 1 with Router ID 30.3.7.0
Link State Database

Area: 0.0.0.30
Type    LinkState ID        AdvRouter    Age    Len    Sequence    Metric
Router    30.3.7.0      30.3.7.0      269      48      80000009    1
Router    30.3.6.0      30.3.6.0     582      36          80000009     1
Network      192.168.67.6    30.3.6.0     582      32        80000002     0
Sum-Net      192.168.45.0         30.3.6.0    941    28      80000005    2
Sum-Net       192.168.23.0   30.3.6.0    941   28      80000005    4
Sum-Net      192.168.56.0    30.3.6.0    979   28      80000005    1
Sum-Net       192.168.20.0   30.3.6.0   941    28      80000005    5
Sum-Net       192.168.34.0   30.3.6.0   941    28      80000005   3
Sum-Net       192.168.13.0   30.3.6.0   941    28      80000005   4
Sum-Net      192.168.12.0    30.3.6.0   941    28      80000005    5

AS External Database
Type       LinkState ID   AdvRouter       Age    Len    Sequence   Metric
External      192.168.40.0    30.3.7.0      16     36       80000001   1

posted on 2022-08-03 00:56  人生不开窍  阅读(1416)  评论(0编辑  收藏  举报

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