Lab 28: OSPF-III

Task

Topology

1. Configure IP Address as per given in topology.
2. Configure OSPF Routing Protocol as per given in topology.
3. Configure OSPF area 3 without using network command. (Do possible configuration)
4. Make sure all routers receive all routes.
5. Configure PAT on R1 and R11.
6. Change Hello and hold interval to 15 and 60 respectively in Area 10.
7. Best path selection, R9 reach 54.0.0.2 via R6.
8. OSPF Area 1 used MD5 Authentication using password "N3tW@xL@b".
9. R1 Advertise all loopbacks on R4 with single route.
10. Make sure Area 3 Routers not received others area routes in their routing table. (Do possible configuration)

Solution

Task 2: Configure OSPF Routing Protocol as per given in topology.

R1
==

router ospf 1
 router-id 1.1.1.1
 exit

int se0/0
 ip ospf 1 area 3
 exit

int f1/0
 ip ospf 1 area 3
 exit

int se0/1
 ip ospf 1 area 3
 exit

R2
==

router ospf 1
 router-id 2.2.2.2
 exit

int se0/0
 ip ospf 1 area 3
 exit

int f0/0
 ip ospf 1 area 3
 exit

int se0/1
 ip ospf 1 area 3
 exit

R3
==

router ospf 1
 router-id 3.3.3.3
 exit

int se0/0
 ip ospf 1 area 3
 exit

int f0/0
 ip ospf 1 area 3
 exit

int se0/1
 ip ospf 1 area 3
 exit

R4
==

router ospf 1
 router-id 4.4.4.4
 exit

int se0/0
 ip ospf 1 area 3
 exit

int f0/0
 ip ospf 1 area 3
 exit

int se0/1
 ip ospf 1 area 3
 exit

int l1
 ip ospf 1 area 3
 exit

int l2
 ip ospf 1 area 3
 exit

int l3
 ip ospf 1 area 3
 exit

int l4
 ip ospf 1 area 3
 exit

R5
==

router ospf 1
 router-id 5.5.5.5
 log-adjacency-changes
 area 1 authentication message-digest
 network 54.32.78.0 0.0.0.255 area 1
 exit

R6
==

router ospf 1
 router-id 6.6.6.6
 log-adjacency-changes
 area 1 authentication message-digest
 network 54.32.78.0 0.0.0.255 area 1
 network 114.204.65.0 0.0.0.255 area 1
 exit

R7
==

router ospf 1
 router-id 7.7.7.7
 log-adjacency-changes
 area 1 authentication message-digest
 area 1 virtual-link 9.9.9.9
 network 45.0.84.0 0.0.0.255 area 0
 network 54.32.78.0 0.0.0.255 area 1
 exit

R8
==

router ospf 1
 router-id 8.8.8.8
 log-adjacency-changes
 area 10 virtual-link 1.1.1.1
 network 34.11.78.0 0.0.0.255 area 10
 network 45.21.88.0 0.0.0.255 area 4
 network 60.4.100.0 0.0.0.255 area 4
 network 100.251.0.0 0.0.0.255 area 4
 exit

R9
==

router ospf 1
 router-id 9.9.9.9
 log-adjacency-changes
 area 1 authentication message-digest
 area 1 virtual-link 7.7.7.7
 network 60.4.100.0 0.0.0.255 area 4
 network 100.0.0.0 0.0.0.255 area 4
 network 114.204.65.0 0.0.0.255 area 1
 exit

R10
===

router ospf 1
 router-id 10.10.10.10
 log-adjacency-changes
 network 100.0.0.0 0.0.0.255 area 4
 network 100.251.0.0 0.0.0.255 area 4
 exit

R11
===

router ospf 1
 router-id 11.11.11.11
 log-adjacency-changes
 network 45.21.88.0 0.0.0.255 area 4
 default-information originate


Task 3: Complete in Task 2.


Task 4: Make sure all routers receive all routes.

R1
==

router ospf 1
 area 10 virtual-link 8.8.8.8
 exit

R8
==

router ospf 1
 area 10 virtual-link 1.1.1.1
 exit

R7
==

router ospf 1
 area 10 virtual-link 9.9.9.9
 exit

R9
==

router ospf 1
 area 10 virtual-link 7.7.7.7
 exit


Task 5: Configure PAT on R1 and R11.

R1
==

ip access-list extended NAT
 permit ip 10.0.13.0 0.0.0.255 any
 permit ip 10.0.34.0 0.0.0.255 any
 permit ip 10.0.24.0 0.0.0.255 any
 permit ip 10.0.12.0 0.0.0.255 any
 permit ip 192.168.1.0 0.0.0.255 any
 permit ip 45.0.84.0 0.0.0.255 any
 permit ip 34.11.78.0 0.0.0.255 any
 permit ip 54.32.78.0 0.0.0.255 any
 permit ip 114.204.65.0 0.0.0.255 any
 permit ip 60.4.100.0 0.0.0.255 any
 permit ip 100.0.0.0 0.0.0.255 any
 permit ip 100.251.0.0 0.0.0.255 any
 permit ip 42.21.88.0 0.0.0.255 any
 permit ip 4.4.1.0 0.0.0.255 any
 permit ip 4.4.2.0 0.0.0.255 any
 permit ip 4.4.3.0 0.0.0.255 any
 permit ip 4.4.4.0 0.0.0.255 any
 exit

int f0/0
 ip nat outside
 exit

int f0/1
 ip nat inside
 exit

int se0/0
 ip nat inside
 exit

int f1/0
 ip nat inside
 exit

int se0/2
 ip nat inside
 exit

int se0/1
 ip nat inside
 exit

ip nat inside source list NAT interface f0/0 overload

R11
===

ip access-list extended NAT
 permit ip 45.21.88.0 0.0.0.255 any
 permit ip 100.251.0.0 0.0.0.255 any
 permit ip 60.4.100.0 0.0.0.255 any
 permit ip 100.0.0.0 0.0.0.255 any
 permit ip 114.204.65.0 0.0.0.255 any
 permit ip 54.32.78.0 0.0.0.255 any
 permit ip 34.11.78.0 0.0.0.255 any
 permit ip 45.0.84.0 0.0.0.255 any
 permit ip 10.0.13.0 0.0.0.255 any
 permit ip 10.0.34.0 0.0.0.255 any
 permit ip 10.0.24.0 0.0.0.255 any
 permit ip 10.0.12.0 0.0.0.255 any
 permit ip 192.168.1.0 0.0.0.255 any
 permit ip 4.4.1.0 0.0.0.255 any
 permit ip 4.4.2.0 0.0.0.255 any
 permit ip 4.4.3.0 0.0.0.255 any
 permit ip 4.4.4.0 0.0.0.255 any
 exit

int f0/0
 ip nat outside
 exit

int f0/1
 ip nat inside
 exit

ip nat inside source list NAT interface f0/0 overload


Task 6: Change Hello and hold interval to 15 and 60 respectively in Area 10.

R1
==

int se0/2
 ip ospf hello-interval 15
 ip ospf dead-interval 60
 exit

R8
==

int se0/0
 ip ospf hello-interval 15
 ip ospf dead-interval 60
 exit


Task 7: Best path selection, R9 reach 54.0.0.2 via R6.

R9
==

int f0/0
 ip ospf cost 100
 exit

 
Task 8: OSPF Area 1 used MD5 Authentication using password "N3tW@xL@b".

R5
==

router ospf 1
 area 1 authentication message-digest
 exit

int f0/0
 ip ospf message-digest-key 1 md5 N3tW@xL@b
 exit

R6
==

router ospf 1
 area 1 authentication message-digest
 exit

int f0/0
 ip ospf message-digest-key 1 md5 N3tW@xL@b
 exit

R7
==

router ospf 1
 area 1 authentication message-digest
 exit

int f0/0
 ip ospf message-digest-key 1 md5 N3tW@xL@b
 exit

R9
==

router ospf 1
 area 1 authentication message-digest
 exit

int s0/0
 ip ospf message-digest-key 1 md5 N3tW@xL@b
 exit

 
Task 9: R1 Advertise all loopbacks on R4 with single route.

R1
==

router ospf 1
 area 3 range 4.4.0.0 255.255.248.0
 exit


Task 10: Make sure Area 3 Routers not received others area routes in their routing table. (Do possible configuration)

R1
==

router ospf 1
 area 3 stub no-summary
 exit

R2
==

router ospf 1
 area 3 stub no-summary
 exit

R3
==

router ospf 1
 area 3 stub no-summary
 exit

R4
==

router ospf 1
 area 3 stub no-summary
 exit

Note: Verify using "sh ip route".