OSPF配置实验之特殊区域totally stub

78yuhi

1、特殊区域totally stub解析

区域类型	作用	默认路由	备注	命令
stub	过滤LSA4、LSA5	ABR默认下发3类默认路由，seed cost值为1	本区域所有路由器都必须配置成stub，否则邻居起不来，且不能包含ASBR	area 2 stub area 2 default-cost x
totally stub	过滤LSA3、LSA4、LSA5	ABR默认下发3类默认路由，seed cost值为1	本区域所有路由器都必须配置成stub，否则邻居起不来，且不能包含ASBR	area 2 stub no-summary

2、实验拓扑

3、实验配置

R1配置

interface Loopback0

ip address 1.1.1.1 255.255.255.0

interface Serial0/0

ip address 12.1.1.1 255.255.255.0

router ospf 110

router-id 1.1.1.1

network 12.1.1.0 0.0.0.255 area 2

R2配置

interface Loopback0

ip address 2.2.2.2 255.255.255.0

interface Serial0/0

ip address 12.1.1.2 255.255.255.0

interface Serial0/1

ip address 23.1.1.2 255.255.255.0router ospf 110

router-id 2.2.2.2

network 12.1.1.0 0.0.0.255 area 2

network 23.1.1.0 0.0.0.255 area 0

R3配置

interface Loopback0

ip address 3.3.3.3 255.255.255.0

interface Serial0/0

ip address 34.1.1.3 255.255.255.0

interface Serial0/1

ip address 23.1.1.3 255.255.255.0router ospf 110

router-id 3.3.3.3

network 23.1.1.0 0.0.0.255 area 0

network 34.1.1.0 0.0.0.255 area 1

R4配置

interface Loopback0

ip address 4.4.4.4 255.255.255.0

interface Serial0/0

ip address 34.1.1.4 255.255.255.0

interface Serial0/1

ip address 45.1.1.4 255.255.255.0

router ospf 110

router-id 4.4.4.4

redistribute rip subnets

network 34.1.1.0 0.0.0.255 area 1

R5配置

interface Loopback0

ip address 5.5.5.5 255.255.255.0

interface Serial0/1

ip address 45.1.1.5 255.255.255.0

serial restart-delay 0

router rip

version 2

network 5.0.0.0

network 45.0.0.0

no auto-summary

4、实验验证

过滤LSA3、LSA4、LSA4

配置totally stub前

配置totally stub后

ABR下放3类默认路由
配置totally stub前

配置totally stub后