Lab 15 - OSPF Totally Stubby Area

Prerequisites: CCNP level skills.

Note!
Use the Lab 14 final configuration in this one.

Topology

Pic. 1 - OSPF Multi-Area Topology.

Icons designed by: Andrzej Szoblik - http://www.newo.pl

Task List

Step 1
Check the routing table on R4. Area 2 should accept all LSAs (LSAs 1-5).

Step 2
Configure router(s) so area 2 does not receive the following LSAs:

• LSA5
• LSA4
• LSA3

Step 3
Verify the results.

Lab Solution

Step 1
Check the routing table on R4. Area 2 should accept all LSAs (LSAs 1-5).

Pic. 2 - All LSAs on R4.

Step 2

Configure router(s) so area 2 does not receive the following LSAs:

• LSA5
• LSA4
• LSA3
  

R2 Configuration:

!

router ospf 1
 router-id 2.2.2.2
 log-adjacency-changes
 area 2 stub no-summary
 network 10.1.12.2 0.0.0.0 area 0
 network 10.1.24.2 0.0.0.0 area 2
 network 172.16.102.2 0.0.0.0 area 0

!

R4 Configuration:

!

router ospf 1
 router-id 4.4.4.4
 log-adjacency-changes
 area 2 stub
 network 0.0.0.0 255.255.255.255 area 2

!

R6 Configuration:

!

router ospf 1
 router-id 6.6.6.6
 log-adjacency-changes
 area 2 stub
 network 0.0.0.0 255.255.255.255 area 2

!

Step 3

Verify the results.

Pic. 3 - R4's routing table.