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Cisco Ospf

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Laborotory Work
OSPF MULTI AREA CONFIGURATION

In this laboratory work you will learn: * Use OSPF MultiArea protocol ; * Encrypted Ospf protocol;
Note: The routers used CCNA labs are Cisco 2911 Cable the network as shown in the topology.
Attach the devices as shown in the topology diagram, and cable as necessary. Configure PC hosts. Initialize and reload the routers and switches as necessary. Configure basic settings for each router. Configure routing.
Configure OSPF on the routers in area 1 with process ID of 100, in area 0 with process ID of 110, in area 2 with 200.

R6(config)#router ospf 100
R6(config-router)#network 8.0.0.0 0.255.255.255 area 1
R6(config-router)#network 192.168.1.0 0.0.0.255 area 1

R6(config)#router ospf 100
R6(config-router)#network 8.0.0.0 0.255.255.255 area 1
R6(config-router)#network 192.168.1.0 0.0.0.255 area 1

R2(config)#router ospf 110
R6(config-router)#network 8.0.0.0 0.255.255.255 area 1
R6(config-router)#network 9.0.0.0 0.255.255.255 area 1
R6(config-router)#network 30.0.0.0 0.255.255.255 area 0

R2(config)#router ospf 110
R6(config-router)#network 8.0.0.0 0.255.255.255 area 1
R6(config-router)#network 9.0.0.0 0.255.255.255 area 1
R6(config-router)#network 30.0.0.0 0.255.255.255 area 0

* On R1 use the following commands #show ip route
R1#show ip route
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route

Gateway of last resort is not set

O IA 8.0.0.0/8 [110/128] via 30.0.0.2, 00:21:56, Serial0/0/1
O IA 9.0.0.0/8 [110/128] via 30.0.0.2, 00:21:56, Serial0/0/1
11.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 11.0.0.0/8 is directly connected, Serial0/0/0
L 11.0.0.1/32 is directly connected, Serial0/0/0
O IA 12.0.0.0/8 [110/128] via 11.0.0.2, 00:21:56, Serial0/0/0
O IA 13.0.0.0/8 [110/128] via 11.0.0.2, 00:21:56, Serial0/0/0
30.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 30.0.0.0/8 is directly connected, Serial0/0/1
L 30.0.0.1/32 is directly connected, Serial0/0/1
O IA 192.168.1.0/24 [110/129] via 30.0.0.2, 00:21:56, Serial0/0/1
O IA 192.168.2.0/24 [110/129] via 30.0.0.2, 00:21:56, Serial0/0/1
192.168.3.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.3.0/24 is directly connected, GigabitEthernet0/0
L 192.168.3.1/32 is directly connected, GigabitEthernet0/0
O IA 192.168.4.0/24 [110/129] via 11.0.0.2, 00:21:56, Serial0/0/0
O IA 192.168.5.0/24 [110/129] via 11.0.0.2, 00:21:56, Serial0/0/0 Verify connectivity. * From PC-0,PC-1 you should be able to ping every interface on R1, R2, R3, R4, R5, R6, R7 and PC-2, PC3,PC4. Were all pings successful? ______________

OSPF encrypted authentication

Cable the network as shown in the topology.
Attach the devices as shown in the topology diagram, and cable as necessary.

* Routing Table Name | interface | IP | MASK | DEFAULT-GATEWAY | R1 | Fa0/0 | 192.168.2.1 | 255.255.255.0 | | | Fa0/1 | 192.168.1.1 | 255.255.255.0 | | R2 | Fa0/0 | 192.168.2.2 | 255.255.255.0 | | | Fa0/1 | 192.168.3.1 | 255.255.255.0 | | PC1 | Fa0 | 192.168.1.100 | 255.255.255.0 | 192.168.1.1 | PC2 | Fa0 | 192.168.3.100 | 255.255.255.0 | 192.168.3.1 |

Configure PC hosts. Initialize and reload the routers and switches as necessary. Configure routing.
Configure OSPF on the routers in area 0 with process ID of 1 Verify connectivity.
From PC-0 you should be able to ping every interface on R1, R2, and PC-1. Were all pings successful? ______________
From PC-1, you should be able to ping every interface on R1, R2 and PC-0. Were all pings successful? ______________ * If the pings are not successful, troubleshoot the basic device configurations before continuing.

*

Configure OSPF encrypted authentication with MD5 On R1 and R2 use the following commands

R1(config)#router ospf 1
R1(config-router)#area 0 authentication message-digest
R1(config)#int fa0/0
R1(config-if)#ip ospf authentication message-digest
R1(config-if)#ip ospf message-digest-key 1 md5 cisco
R1(config)#router ospf 1
R1(config-router)#area 0 authentication message-digest
R1(config)#int fa0/0
R1(config-if)#ip ospf authentication message-digest
R1(config-if)#ip ospf message-digest-key 1 md5 cisco

R2(config)#router ospf 1
R2(config-router)#area 0 authentication message-digest
R2(config)#int fa0/0
R2(config-if)#ip ospf authentication message-digest
R2(config-if)#ip ospf message-digest-key 1 md5 cisco
R2(config)#router ospf 1
R2(config-router)#area 0 authentication message-digest
R2(config)#int fa0/0
R2(config-if)#ip ospf authentication message-digest
R2(config-if)#ip ospf message-digest-key 1 md5 cisco

* There is a password cisco * command show run on each router router ospf 1 log-adjacency-changes area 0 authentication message-digest network 192.168.1.0 0.0.0.255 area 0 network 192.168.2.0 0.0.0.255 area 0

From PC-0 you should be able to ping every interface on R1, R2, and PC-1. Were all pings successful? ______________
From PC-1, you should be able to ping every interface on R1, R2 and PC-0. Were all pings successful? ______________

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