OSPF 完全stub区域实验简述

news2025/10/31 17:37:02

1、OSPF 完全stub区域配置
为解决末端区域维护过大LSDB带来的问题，通过配置stub no-summary 完全stub,仅支持1类、2类LSA，ABR产生1条3类默认路由。

实验拓扑图

在这里插入图片描述
r1:
sys
sysname r1
undo info enable
int loopb 0
ip add 1.1.1.1 32
quit
int e0/0/0
ip add 172.16.1.1 24
quit
ospf 1
area 0.0.0.1
network 172.16.1.0 0.0.0.255
network 1.1.1.1 0.0.0.0
Stub no-summary 配置完全stub区域
ret

r6:
sys
sysname r6
undo info enable
int loopb 0
ip add 6.6.6.6 32
quit
int e0/0/0
ip add 172.16.1.6 24
quit
ospf 1
area 0.0.0.1
network 172.16.1.0 0.0.0.255
network 6.6.6.6 0.0.0.0
Stub no-summary 配置完全stub区域
ret

r2:
sys
sysname r2
undo info enable
int loopb 0
ip add 2.2.2.2 32
quit
int e0/0/0
ip add 172.16.1.2 24
quit
int s0/0/0
ip add 23.1.1.2 24
quit
ospf 1
area 0.0.0.1
network 172.16.1.0 0.0.0.255
network 2.2.2.2 0.0.0.0
Stub no-summary 配置完全stub区域*
quit
area 0.0.0.0
network 23.1.1.0 0.0.0.255
ret

r3:
sys
sysname r3
undo info enable
int loopb 0
ip add 3.3.3.3 32
quit
int s0/0/1
ip add 23.1.1.3 24
quit
int s0/0/0
ip add 34.1.1.3 24
quit
ospf 1
area 0.0.0.0
network 23.1.1.0 0.0.0.255
quit
area 0.0.0.2
network 34.1.1.0 0.0.0.255
Network 3.3.3.3 0.0.0.0
ret

r4:
sys
sysname r4
undo info enable
int loopb 0
ip add 4.4.4.4 32
quit
int s0/0/1
ip add 34.1.1.4 24
quit
int s0/0/0
ip add 45.1.1.4 24
quit
ospf 1
area 0.0.0.2
network 34.1.1.0 0.0.0.255
network 45.1.1.0 0.0.0.255
Network 4.4.4.4 0.0.0.0
ret

r5:
sys
sysname r5
undo info enable
int loopb 0
ip add 5.5.5.5 32
quit
int loopb 100
ip add 100.100.100.100 32 配置环回口地址并引入OSPF
quit
int s0/0/1
ip add 45.1.1.5 24
quit
ospf 1
import-route direct
area 0.0.0.2
network 45.1.1.0 0.0.0.255
network 5.5.5.5 0.0.0.0
ret