OSPF多区域配置实验指南：从基础配置到高级优化

OSPF多区域配置实验指南：从基础配置到高级优化

引用

CSDN

1.

https://blog.csdn.net/qq_64498620/article/details/140672253

本文将通过一个具体的网络拓扑图，详细介绍OSPF多区域配置的实验步骤。内容涵盖设备IP地址配置、OSPF区域配置、检查邻居关系、路由汇总、修改参考带宽、引入缺省路由以及调整路由优先级等关键操作。

一、IP地址配置及环回口

R1

system-view
sysname R1
interface GigabitEthernet0/0/0
ip address 10.0.123.1 255.255.255.0
interface LoopBack0
ip address 10.0.1.1 255.255.255.0

R2

system-view
sysname R2
interface GigabitEthernet0/0/0
ip address 10.0.123.2 255.255.255.0
interface GigabitEthernet0/0/1
ip address 10.0.24.2 255.255.255.0
interface LoopBack0
ip address 10.0.2.2 255.255.255.0
interface LoopBack1
ip address 10.2.0.1 255.255.255.0
interface LoopBack2
ip address 10.2.1.1 255.255.255.0

R3

system-view
sysname R3
interface GigabitEthernet0/0/0
ip address 10.0.123.3 255.255.255.0
interface LoopBack0
ip address 10.0.3.3 255.255.255.0
interface LoopBack1
ip address 10.3.0.1 255.255.255.0
interface LoopBack2
ip address 10.3.1.1 255.255.255.0

R4

system-view
sysname R4
interface GigabitEthernet0/0/0
ip address 10.0.24.4 255.255.255.0
interface GigabitEthernet0/0/1
ip address 10.0.45.4 255.255.255.0
interface LoopBack0
ip address 10.0.4.4 255.255.255.0

R5

system-view
sysname R5
interface GigabitEthernet0/0/0
ip address 10.0.45.5 255.255.255.0
interface LoopBack0
ip address 10.0.5.5 255.255.255.0
interface LoopBack1
ip address 10.5.0.1 255.255.255.0
interface LoopBack2
ip address 10.5.1.1 255.255.255.0

二、按照规划配置OSPF区域

R1

ospf 1 router-id 10.0.1.1
area 0.0.0.2
network 10.0.1.0 0.0.0.255
network 10.0.123.0 0.0.0.255

R2

ospf 1 router-id 10.0.2.2
area 0.0.0.0
network 10.0.2.0 0.0.0.255
network 10.0.24.0 0.0.0.255
area 0.0.0.2
network 10.0.123.0 0.0.0.255

R3

ospf 1 router-id 10.0.3.3
area 0.0.0.2
network 10.0.3.0 0.0.0.255
network 10.0.123.0 0.0.0.255
network 10.3.0.0 0.0.0.255
network 10.3.1.0 0.0.0.255

R4

ospf 1 router-id 10.0.4.4
area 0.0.0.0
network 10.0.4.0 0.0.0.255
network 10.0.24.0 0.0.0.255
area 0.0.0.1
network 10.0.45.0 0.0.0.255

R5

ospf 1 router-id 10.0.5.5
area 0.0.0.1
network 10.0.5.0 0.0.0.255
network 10.0.45.0 0.0.0.255
network 10.5.0.0 0.0.0.255
network 10.5.1.0 0.0.0.255

三、检查OSPF配置结果，检查OSPF邻居关系状态

修改网络类型

在R1上配置环回口的网络类型：

interface LoopBack0
ospf network-type broadcast

在每个路由器上的环回口配置使其掩码一致：

四、ABR、ASBR上配置路由汇总，减少区域间、外部路由数量

ABR汇总

在R2上进行路由汇总：

ospf
area 0.0.0.2
abr-summary 10.3.0.0 255.255.254.0

ASBR汇总

在R2上引入外部路由并进行汇总：

ospf 1 router-id 10.0.2.2
import-route direct
asbr-summary 10.2.0.0 255.255.254.0

五、修改OSPF的参考带宽值

在R1上修改参考带宽值：

ospf
bandwidth-reference 10000

六、在OSPF中引入缺省路由

在R1上配置默认路由并通告：

ip route-static 0.0.0.0 0 LoopBack 0
[R1-ospf-1]default-route-advertise always type 1

七、修改OSPF域内、域间路由和域外路由的缺省路由优先级

在R1上调整路由优先级：

ospf
preference 30
preference ase 50