1、實(shí)驗(yàn)拓?fù)?/p>

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按拓?fù)渌九渲煤肙SPF后，此時(shí)由于area2與area0之間隔著area1,此時(shí)area2中的R5并沒有路由可達(dá)area3、area0、area1。為此我們?cè)赗4上啟兩個(gè)OSPF路由進(jìn)程，分別將area1和area2宣告進(jìn)去，并在OSPF進(jìn)程中分別將對(duì)方重分布進(jìn)來即可。

2、實(shí)驗(yàn)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 1.1.1.0 0.0.0.255 area 3

 network 12.1.1.0 0.0.0.255 area 3

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 23.1.1.2 255.255.255.0

router ospf 110

 router-id 2.2.2.2

 network 2.2.2.0 0.0.0.255 area 0

 network 12.1.1.0 0.0.0.255 area 3

 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 23.1.1.3 255.255.255.0

router ospf 110

 router-id 3.3.3.3

 network 3.3.3.0 0.0.0.255 area 0

 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

 log-adjacency-changes

 network 4.4.4.0 0.0.0.255 area 1

 network 34.1.1.0 0.0.0.255 area 1

 network 45.1.1.0 0.0.0.255 area 2

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

router ospf 110

 router-id 5.5.5.5

 log-adjacency-changes

 network 5.5.5.0 0.0.0.255 area 2

 network 45.1.1.0 0.0.0.255 area 2

3、配置OSPF多進(jìn)程重分布

此時(shí)R1和R5都沒有彼此的路由。我們將R4上OSPF的配置修改如下

router ospf 110

 router-id 4.4.4.4

 log-adjacency-changes

 redistribute ospf 100 subnets

 network 4.4.4.0 0.0.0.255 area 1

 network 34.1.1.0 0.0.0.255 area 1

router ospf 100

 router-id 4.4.4.40

 log-adjacency-changes

 redistribute ospf 110 subnets

 network 45.1.1.0 0.0.0.255 area 2