24. Multi-process bidirectional redistribution in the irregular region of OSPF configuration experiment

1. Experimental topology

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When OSPF is configured as shown in the topology, at this point the R5 in AREA2 is not routed to Area3, AREA0, area1 because of the area1 between Area2 and area0. For this reason we set up two OSPF routing processes on the R4, declaring area1 and AREA2 respectively, and re-distributing each other in the OSPF process.

2. Experiment 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

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Both R1 and R5 have no route to each other at this time. We will modify the configuration of OSPF on R4 as follows

router OSPF 110

Router-id 4.4.4.4

Log-adjacency-changes

Redistribute OSPF 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 subnets

Network 45.1.1.0 0.0.0.255 Area 2

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This article is from the "Open Source Hall" blog, please be sure to keep this source http://kaiyuandiantang.blog.51cto.com/10699754/1718528

24. Multi-process bidirectional redistribution in the irregular region of OSPF configuration experiment