21、OSPF配置实验之特殊区域totallystub

1、特殊区域totally stub解析

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区域类型作用默认路由备注命令
stub过滤LSA4、LSA5ABR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、LSA5ABR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ASBRarea 2 stub no-summary

2、实验拓扑

21、OSPF配置实验之特殊区域totally stub

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

21、OSPF配置实验之特殊区域totally stub配置totally stub后

21、OSPF配置实验之特殊区域totally stub

21、OSPF配置实验之特殊区域totally stub

21、OSPF配置实验之特殊区域totally stub

ABR下放3类默认路由

配置totally stub前

21、OSPF配置实验之特殊区域totally stub

配置totally stub后

21、OSPF配置实验之特殊区域totally stub


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