Objectives:
1. Configure OSPF for the above network diagram. R1 will act as an ASBR by redistributing a series of static routes into the OSPF network. These routers should NOT increment their metric as they pass through the network and should have an initial OSPF cost of 200. All routers should have a router-id reflecting their hostname; you should be able to ping this router-id throughout the entire OSPF network.
2. After completing the initial step of the lab, one of the routers in Area 0 will become the DR and one will become BDR for the Ethernet segment. Which router will become the DR and BDR ? Write DR and BDR next to the respective router below.
- R1
- R2 BDR
- R3 DR
R1 to R2 (Full State)
R1 to R3 (Full State)
R2 to R3 (2-Way State)
4. Implement summarization at the ABRs in the network to make routing table throughout the network as efficient as possible.
5. Implement summarization at the ASBR. The summary route should have the same attributes as the original, individual routes redistributed into the network.
6. The organization plans to upgrade to Gigabit Ethernet in the coming months. OSPF should accurately calculate its metric assuming Gigabit Ethernet will be the fastest link in the network.
To See Configuration Click Read More.
R1#show running-config (Lines Omitted)
hostname R1
!
interface FastEthernet0/0
ip address 172.30.0.1 255.255.255.0
ip ospf priority 200
duplex auto
speed auto
!
router ospf 1
router-id 1.1.1.1
auto-cost reference-bandwidth 1000
summary-address 172.16.0.0 255.255.252.0
redistribute static metric 200 subnets
network 172.30.0.1 0.0.0.0 area 0
!
ip route 172.16.0.0 255.255.255.0 Null0
ip route 172.16.1.0 255.255.255.0 Null0
ip route 172.16.2.0 255.255.255.0 Null0
ip route 172.16.3.0 255.255.255.0 Null0
!
end
R1#show ip interface brief
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 172.30.0.1 YES manual up up
R1#show ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface
2.2.2.2 0 FULL/DROTHER 00:00:33 172.30.0.2 FastEthernet0/0
3.3.3.3 0 FULL/DROTHER 00:00:30 172.30.0.3 FastEthernet0/0
R1#show ip route
172.16.0.0/16 is variably subnetted, 5 subnets, 2 masks
S 172.16.0.0/24 is directly connected, Null0
O 172.16.0.0/22 is a summary, 01:11:55, Null0
S 172.16.1.0/24 is directly connected, Null0
S 172.16.2.0/24 is directly connected, Null0
S 172.16.3.0/24 is directly connected, Null0
172.30.0.0/24 is subnetted, 3 subnets
O IA 172.30.20.0 [110/2010] via 172.30.0.3, 01:02:10, FastEthernet0/0
C 172.30.0.0 is directly connected, FastEthernet0/0
O IA 172.30.10.0 [110/2010] via 172.30.0.2, 01:02:23, FastEthernet0/0
10.0.0.0/22 is subnetted, 2 subnets
O IA 10.10.0.0 [110/2011] via 172.30.0.2, 01:02:24, FastEthernet0/0
O IA 10.20.0.0 [110/2011] via 172.30.0.3, 01:02:13, FastEthernet0/0
hostname R2
!
interface FastEthernet0/0
ip address 172.30.0.2 255.255.255.0
ip ospf priority 0
duplex auto
speed auto
!
interface Serial1/0
bandwidth 500
ip address 172.30.10.2 255.255.255.0
clock rate 504000
!
router ospf 1
router-id 2.2.2.2
auto-cost reference-bandwidth 1000
area 10 range 10.10.0.0 255.255.252.0
network 172.30.0.2 0.0.0.0 area 0
network 172.30.10.2 0.0.0.0 area 10
!
end
R2#show ip interface brief
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 172.30.0.2 YES manual up up
Serial1/0 172.30.10.2 YES manual up up
R2#show ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface
1.1.1.1 200 FULL/DR 00:00:35 172.30.0.1 FastEthernet0/0
3.3.3.3 0 2WAY/DROTHER 00:00:31 172.30.0.3 FastEthernet0/0
5.5.5.5 0 FULL/ - 00:00:30 172.30.10.5 Serial1/0
R2#show ip route
172.16.0.0/22 is subnetted, 1 subnets
O E2 172.16.0.0 [110/200] via 172.30.0.1, 01:17:27, FastEthernet0/0
172.30.0.0/24 is subnetted, 3 subnets
O IA 172.30.20.0 [110/2010] via 172.30.0.3, 01:07:41, FastEthernet0/0
C 172.30.0.0 is directly connected, FastEthernet0/0
C 172.30.10.0 is directly connected, Serial1/0
10.0.0.0/8 is variably subnetted, 6 subnets, 2 masks
O 10.10.0.0/24 [110/2001] via 172.30.10.5, 01:07:53, Serial1/0
O 10.10.0.0/22 is a summary, 01:07:57, Null0
O 10.10.1.0/24 [110/2001] via 172.30.10.5, 01:07:57, Serial1/0
O 10.10.2.0/24 [110/2001] via 172.30.10.5, 01:07:57, Serial1/0
O 10.10.3.0/24 [110/2001] via 172.30.10.5, 01:07:57, Serial1/0
O IA 10.20.0.0/22 [110/2011] via 172.30.0.3, 01:07:45, FastEthernet0/0
hostname R3
!
interface FastEthernet0/0
ip address 172.30.0.3 255.255.255.0
ip ospf priority 0
duplex auto
speed auto
!
interface Serial1/0
bandwidth 500
ip address 172.30.20.3 255.255.255.0
clock rate 504000
!
router ospf 1
router-id 3.3.3.3
auto-cost reference-bandwidth 1000
area 20 range 10.20.0.0 255.255.252.0
network 172.30.0.3 0.0.0.0 area 0
network 172.30.20.3 0.0.0.0 area 20
!
end
R3#show ip interface brief
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 172.30.0.3 YES manual up up
Serial1/0 172.30.20.3 YES manual up up
R3#show ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface
1.1.1.1 200 FULL/DR 00:00:30 172.30.0.1 FastEthernet0/0
2.2.2.2 0 2WAY/DROTHER 00:00:37 172.30.0.2 FastEthernet0/0
4.4.4.4 0 FULL/ - 00:00:36 172.30.20.4 Serial1/0
R3#show ip route
172.16.0.0/22 is subnetted, 1 subnets
O E2 172.16.0.0 [110/200] via 172.30.0.1, 01:21:13, FastEthernet0/0
172.30.0.0/24 is subnetted, 3 subnets
C 172.30.20.0 is directly connected, Serial1/0
C 172.30.0.0 is directly connected, FastEthernet0/0
O IA 172.30.10.0 [110/2010] via 172.30.0.2, 01:11:28, FastEthernet0/0
10.0.0.0/8 is variably subnetted, 6 subnets, 2 masks
O IA 10.10.0.0/22 [110/2011] via 172.30.0.2, 01:11:28, FastEthernet0/0
O 10.20.2.0/24 [110/2001] via 172.30.20.4, 01:11:31, Serial1/0
O 10.20.3.0/24 [110/2001] via 172.30.20.4, 01:11:31, Serial1/0
O 10.20.0.0/24 [110/2001] via 172.30.20.4, 01:11:31, Serial1/0
O 10.20.0.0/22 is a summary, 01:11:31, Null0
O 10.20.1.0/24 [110/2001] via 172.30.20.4, 01:11:31, Serial1/0
hostname R4
!
interface Loopback1
ip address 10.20.0.1 255.255.255.0
ip ospf network point-to-point
!
interface Loopback2
ip address 10.20.1.1 255.255.255.0
ip ospf network point-to-point
!
interface Loopback3
ip address 10.20.2.1 255.255.255.0
ip ospf network point-to-point
!
interface Loopback4
ip address 10.20.3.1 255.255.255.0
ip ospf network point-to-point
!
interface Serial1/0
bandwidth 500
ip address 172.30.20.4 255.255.255.0
!
router ospf 1
router-id 4.4.4.4
auto-cost reference-bandwidth 1000
network 10.20.0.0 0.0.255.255 area 20
network 172.30.20.4 0.0.0.0 area 20
!
end
R4#show ip interface brief
Interface IP-Address OK? Method Status Protocol
Serial1/0 172.30.20.4 YES manual up up
Loopback1 10.20.0.1 YES manual up up
Loopback2 10.20.1.1 YES manual up up
Loopback3 10.20.2.1 YES manual up up
Loopback4 10.20.3.1 YES manual up up
R4#show ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface
3.3.3.3 0 FULL/ - 00:00:37 172.30.20.3 Serial1/0
R4#show ip route
172.16.0.0/22 is subnetted, 1 subnets
O E2 172.16.0.0 [110/200] via 172.30.20.3, 01:24:10, Serial1/0
172.30.0.0/24 is subnetted, 3 subnets
C 172.30.20.0 is directly connected, Serial1/0
O IA 172.30.0.0 [110/2010] via 172.30.20.3, 01:14:08, Serial1/0
O IA 172.30.10.0 [110/4010] via 172.30.20.3, 01:14:08, Serial1/0
10.0.0.0/8 is variably subnetted, 5 subnets, 2 masks
O IA 10.10.0.0/22 [110/4011] via 172.30.20.3, 01:14:08, Serial1/0
C 10.20.2.0/24 is directly connected, Loopback3
C 10.20.3.0/24 is directly connected, Loopback4
C 10.20.0.0/24 is directly connected, Loopback1
C 10.20.1.0/24 is directly connected, Loopback2
hostname R5
!
interface Loopback1
ip address 10.10.0.1 255.255.255.0
ip ospf network point-to-point
!
interface Loopback2
ip address 10.10.1.1 255.255.255.0
ip ospf network point-to-point
!
interface Loopback3
ip address 10.10.2.1 255.255.255.0
ip ospf network point-to-point
!
interface Loopback4
ip address 10.10.3.1 255.255.255.0
ip ospf network point-to-point
!
interface Serial1/0
bandwidth 500
ip address 172.30.10.5 255.255.255.0
clock rate 504000
!
router ospf 1
router-id 5.5.5.5
auto-cost reference-bandwidth 1000
network 10.10.0.0 0.0.255.255 area 10
network 172.30.10.5 0.0.0.0 area 10
!
end
R5#show ip interface brief
Interface IP-Address OK? Method Status Protocol
Serial1/0 172.30.10.5 YES manual up up
Loopback1 10.10.0.1 YES manual up up
Loopback2 10.10.1.1 YES manual up up
Loopback3 10.10.2.1 YES manual up up
Loopback4 10.10.3.1 YES manual up up
R5#show ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface
2.2.2.2 0 FULL/ - 00:00:31 172.30.10.2 Serial1/0
R5#show ip route
172.16.0.0/22 is subnetted, 1 subnets
O E2 172.16.0.0 [110/200] via 172.30.10.2, 01:27:17, Serial1/0
172.30.0.0/24 is subnetted, 3 subnets
O IA 172.30.20.0 [110/4010] via 172.30.10.2, 01:17:18, Serial1/0
O IA 172.30.0.0 [110/2010] via 172.30.10.2, 01:17:18, Serial1/0
C 172.30.10.0 is directly connected, Serial1/0
10.0.0.0/8 is variably subnetted, 5 subnets, 2 masks
C 10.10.0.0/24 is directly connected, Loopback1
C 10.10.1.0/24 is directly connected, Loopback2
C 10.10.2.0/24 is directly connected, Loopback3
C 10.10.3.0/24 is directly connected, Loopback4
O IA 10.20.0.0/22 [110/4011] via 172.30.10.2, 01:17:21, Serial1/0
