Shulou(Shulou.com)06/01 Report--

1. Experimental Topology

After OSPF is configured as shown in the topology, R5 in area2 does not have routes to area3, area0, and area1 because there is an area1 between area2 and area0. For this reason, we start two OSPF routing processes on R4, announce area1 and area2 respectively, and redistribute each other in the OSPF process.

2. Experimental configuration

R1 configuration

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 configuration

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 configuration

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 configuration

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 configuration

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. Configure OSPF multi-process redistribution

At this point, neither R1 nor R5 has routes to each other. We modified the configuration of OSPF on R4 as follows

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

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.