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OSPF Lab #1 Walkthrough
May 13th
This is the walkthrough for OSPF Lab #1.
Here’s the topology:
Click here for the initial configs
Here is task one:
1. Configure R1′s s0/0.102 interface and R2′s s0/0.201 interface in area 12, this area should not receive any Type 5 LSAs. Configure R1′s s0/0.103 interface and R3′s s0/0.301 interface in area 13, R1 should only receive a default route from R3, no other OSPF routes should be in R1′s RIB (from R3). Do not use network statements to accomplish this task.
Config:
R1(config)#interface Serial0/0.102 point-to-point R1(config-subif)#ip ospf 100 area 12 R1(config-subif)# R1(config-subif)#interface Serial0/0.103 point-to-point R1(config-subif)#ip ospf 100 area 13 R1(config-subif)# R1(config-subif)#router ospf 100 R1(config-router)#area 12 stub R1(config-router)#area 13 stub R2(config)#interface Serial0/0.201 point-to-point R2(config-subif)#ip ospf 100 area 12 R2(config-subif)# R2(config-subif)#router ospf 100 R2(config-router)#area 12 stub R3(config)#interface Serial0/0.301 point-to-point R3(config-subif)#ip ospf 100 area 13 R3(config-subif)# R3(config-subif)#router ospf 100 R3(config-router)#area 13 stub no-summary |
Here we configure OSPF 100 under the routers’ interfaces (avoiding network statements). Then we configure R1 and R2′s link/area as a stub. Last we configure R1 and R3′s link/area as a totally stubby area, preventing R3 from sending anything buy a default route to R1.
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