Objectives:
1) Configure basic OSPF for the network shown. Advertise all networks attached to each router into OSPF using the simplest method avialable.To inject external networks into the OSPF domain, redistribute the static routes on R1.These routers should be marked as type E1.
2) OSPF should never form neighbor relationships on any interface where other OSPF routers do not exist (as shown in the diagram)
3) All routers in Area 0 should use MD5 authentication for OSPF neighbors.Routers in Area 23 should be configured to support clear-text authentication for OSPF neighbors. (All Password : cisco)
4) Routers in Area 45 are limited in the capacity and should not recive routes for network outside the OSPF system.These routers should reach the external network using a default route witch cannot be configured staticlly.
5) Routers in Area 23 must not recive any Type 3,4 and 5 LSAs from the rest of the OSPF network. These routers should reach the external network using a default route with an initial OSPF cost of 100.
6) When this exercise is complere, all routers should be able to reach (ping) every route in the OSPF routing table.
To See Configuration Click Read More.
Router 1
R1#show run
hostname R1
!
interface FastEthernet0/0
ip address 10.100.1.1 255.255.255.0
ip ospf authentication message-digest
ip ospf message-digest-key 1 md5 cisco
!
router ospf 1
router-id 1.1.1.1
redistribute static metric 50 metric-type 1 subnets
network 10.100.1.1 0.0.0.0 area 0
network 172.31.0.0 0.0.255.255 area 0
!
ip route 172.31.0.0 255.255.255.0 Null0
ip route 172.31.1.0 255.255.255.0 Null0
ip route 172.31.2.0 255.255.255.0 Null0
ip route 172.31.3.0 255.255.255.0 Null0
!
end
R1#show ip interface brief | in up
FastEthernet0/0 10.100.1.1 YES manual up up
R1#show ip route
S 172.31.3.0 is directly connected, Null0
S 172.31.2.0 is directly connected, Null0
S 172.31.1.0 is directly connected, Null0
S 172.31.0.0 is directly connected, Null0
O IA 172.30.2.0 [110/66] via 10.100.1.2, 00:20:27, FastEthernet0/0
O IA 172.30.3.0 [110/66] via 10.100.1.2, 00:20:27, FastEthernet0/0
O IA 172.30.0.0 [110/66] via 10.100.1.2, 00:20:27, FastEthernet0/0
O IA 172.30.1.0 [110/66] via 10.100.1.2, 00:20:33, FastEthernet0/0
O IA 10.23.1.0 [110/65] via 10.100.1.2, 00:33:24, FastEthernet0/0
O IA 10.45.1.0 [110/65] via 10.100.1.4, 00:33:24, FastEthernet0/0
O IA 10.78.1.0 [110/129] via 10.100.1.6, 00:10:07, FastEthernet0/0
O IA 10.67.1.0 [110/65] via 10.100.1.6, 00:33:24, FastEthernet0/0
C 10.100.1.0 is directly connected, FastEthernet0/0
R1#show ip ospf interface fastEthernet 0/0
FastEthernet0/0 is up, line protocol is up
Internet Address 10.100.1.1/24, Area 0
Process ID 1, Router ID 1.1.1.1, Network Type BROADCAST, Cost: 1
Transmit Delay is 1 sec, State DROTHER, Priority 1
Designated Router (ID) 2.2.2.2, Interface address 10.100.1.2
Backup Designated router (ID) 6.6.6.6, Interface address 10.100.1.6
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
oob-resync timeout 40
Hello due in 00:00:08
Supports Link-local Signaling (LLS)
Cisco NSF helper support enabled
IETF NSF helper support enabled
Index 1/1, flood queue length 0
Next 0x0(0)/0x0(0)
Last flood scan length is 0, maximum is 3
Last flood scan time is 0 msec, maximum is 4 msec
Neighbor Count is 3, Adjacent neighbor count is 2
Adjacent with neighbor 2.2.2.2 (Designated Router)
Adjacent with neighbor 6.6.6.6 (Backup Designated Router)
Suppress hello for 0 neighbor(s)
Message digest authentication enabled
Youngest key id is 1
R1#show ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface
2.2.2.2 1 FULL/DR 00:00:34 10.100.1.2 FastEthernet0/0
4.4.4.4 1 2WAY/DROTHER 00:00:32 10.100.1.4 FastEthernet0/0
6.6.6.6 1 FULL/BDR 00:00:30 10.100.1.6 FastEthernet0/0
Router 2
R2#show running-config
hostname R2
!
interface FastEthernet0/0
ip address 10.100.1.2 255.255.255.0
ip ospf authentication message-digest
ip ospf message-digest-key 1 md5 cisco
!
interface Serial1/0
ip address 10.23.1.2 255.255.255.0
ip ospf authentication
ip ospf authentication-key cisco
clock rate 2016000
!
router ospf 1
router-id 2.2.2.2
area 23 stub no-summary
area 23 default-cost 100 (To configure Initial Cost)
passive-interface default
no passive-interface FastEthernet0/0
no passive-interface Serial1/0
network 10.23.1.2 0.0.0.0 area 23
network 10.100.1.2 0.0.0.0 area 0
!
end
FastEthernet0/0 10.100.1.2 YES manual up up
Serial1/0 10.23.1.2 YES manual up up
O E1 172.31.3.0 [110/51] via 10.100.1.1, 00:25:45, FastEthernet0/0
O E1 172.31.2.0 [110/51] via 10.100.1.1, 00:25:45, FastEthernet0/0
O E1 172.31.1.0 [110/51] via 10.100.1.1, 00:25:45, FastEthernet0/0
O E1 172.31.0.0 [110/51] via 10.100.1.1, 00:25:45, FastEthernet0/0
O 172.30.2.0 [110/65] via 10.23.1.3, 00:24:52, Serial1/0
O 172.30.3.0 [110/65] via 10.23.1.3, 00:24:52, Serial1/0
O 172.30.0.0 [110/65] via 10.23.1.3, 00:24:57, Serial1/0
O 172.30.1.0 [110/65] via 10.23.1.3, 00:24:57, Serial1/0
C 10.23.1.0 is directly connected, Serial1/0
O IA 10.45.1.0 [110/65] via 10.100.1.4, 00:25:51, FastEthernet0/0
O IA 10.78.1.0 [110/129] via 10.100.1.6, 00:14:44, FastEthernet0/0
O IA 10.67.1.0 [110/65] via 10.100.1.6, 00:25:54, FastEthernet0/0
C 10.100.1.0 is directly connected, FastEthernet0/0
FastEthernet0/0 is up, line protocol is up
Internet Address 10.100.1.2/24, Area 0
Process ID 1, Router ID 2.2.2.2, Network Type BROADCAST, Cost: 1
Transmit Delay is 1 sec, State DR, Priority 1
Designated Router (ID) 2.2.2.2, Interface address 10.100.1.2
Backup Designated router (ID) 6.6.6.6, Interface address 10.100.1.6
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
oob-resync timeout 40
Hello due in 00:00:08
Supports Link-local Signaling (LLS)
Cisco NSF helper support enabled
IETF NSF helper support enabled
Index 1/2, flood queue length 0
Next 0x0(0)/0x0(0)
Last flood scan length is 1, maximum is 3
Last flood scan time is 0 msec, maximum is 4 msec
Neighbor Count is 3, Adjacent neighbor count is 3
Adjacent with neighbor 1.1.1.1
Adjacent with neighbor 4.4.4.4
Adjacent with neighbor 6.6.6.6 (Backup Designated Router)
Suppress hello for 0 neighbor(s)
Message digest authentication enabled
Youngest key id is 1
Serial1/0 is up, line protocol is up
Internet Address 10.23.1.2/24, Area 23
Process ID 1, Router ID 2.2.2.2, Network Type POINT_TO_POINT, Cost: 64
Transmit Delay is 1 sec, State POINT_TO_POINT
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
oob-resync timeout 40
Hello due in 00:00:01
Supports Link-local Signaling (LLS)
Cisco NSF helper support enabled
IETF NSF helper support enabled
Index 1/1, flood queue length 0
Next 0x0(0)/0x0(0)
Last flood scan length is 1, maximum is 3
Last flood scan time is 0 msec, maximum is 4 msec
Neighbor Count is 1, Adjacent neighbor count is 1
Adjacent with neighbor 3.3.3.3
Suppress hello for 0 neighbor(s)
Simple password authentication enabled
Neighbor ID Pri State Dead Time Address Interface
1.1.1.1 1 FULL/DROTHER 00:00:34 10.100.1.1 FastEthernet0/0
4.4.4.4 1 FULL/DROTHER 00:00:36 10.100.1.4 FastEthernet0/0
6.6.6.6 1 FULL/BDR 00:00:34 10.100.1.6 FastEthernet0/0
3.3.3.3 0 FULL/ - 00:00:34 10.23.1.3 Serial1/0
R3#show run
hostname R3
!
interface Loopback0
ip address 172.30.0.1 255.255.255.0
ip ospf network point-to-point
!
interface Loopback1
ip address 172.30.1.1 255.255.255.0
ip ospf network point-to-point
!
interface Loopback2
ip address 172.30.2.1 255.255.255.0
ip ospf network point-to-point
!
interface Loopback3
ip address 172.30.3.1 255.255.255.0
ip ospf network point-to-point
!
interface Serial1/0
ip address 10.23.1.3 255.255.255.0
ip ospf authentication
ip ospf authentication-key cisco
clock rate 2016000
!
router ospf 1
router-id 3.3.3.3
area 23 stub
passive-interface default
no passive-interface Serial1/0
network 10.23.1.3 0.0.0.0 area 23
network 172.30.0.0 0.0.255.255 area 23
!
end
R3#show ip interface brief | in up
Serial1/0 10.23.1.3 YES manual up up
Loopback0 172.30.0.1 YES manual up up
Loopback1 172.30.1.1 YES manual up up
Loopback2 172.30.2.1 YES manual up up
Loopback3 172.30.3.1 YES manual up up
R3#show ip route
C 172.30.2.0 is directly connected, Loopback2
C 172.30.3.0 is directly connected, Loopback3
C 172.30.0.0 is directly connected, Loopback0
C 172.30.1.0 is directly connected, Loopback1
C 10.23.1.0 is directly connected, Serial1/0
O*IA 0.0.0.0/0 [110/164] via 10.23.1.2, 00:21:58, Serial1/0
R3#show ip ospf interface
Serial1/0 is up, line protocol is up
Internet Address 10.23.1.3/24, Area 23
Process ID 1, Router ID 3.3.3.3, Network Type POINT_TO_POINT, Cost: 64
Transmit Delay is 1 sec, State POINT_TO_POINT
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
oob-resync timeout 40
Hello due in 00:00:02
Supports Link-local Signaling (LLS)
Cisco NSF helper support enabled
IETF NSF helper support enabled
Index 1/1, flood queue length 0
Next 0x0(0)/0x0(0)
Last flood scan length is 1, maximum is 1
Last flood scan time is 0 msec, maximum is 0 msec
Neighbor Count is 1, Adjacent neighbor count is 1
Adjacent with neighbor 2.2.2.2
Suppress hello for 0 neighbor(s)
Simple password authentication enabled
R3#show ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface
2.2.2.2 0 FULL/ - 00:00:31 10.23.1.2 Serial1/0
Router 4
R4#show running-config
hostname R4
!
interface FastEthernet0/0
ip address 10.100.1.4 255.255.255.0
ip ospf authentication message-digest
ip ospf message-digest-key 1 md5 cisco
!
interface Serial1/0
ip address 10.45.1.4 255.255.255.0
clock rate 2016000
!
router ospf 1
router-id 4.4.4.4
area 45 stub
passive-interface default
no passive-interface FastEthernet0/0
no passive-interface Serial1/0
network 10.45.1.4 0.0.0.0 area 45
network 10.100.1.4 0.0.0.0 area 0
!
end
R4#show ip interface brief | in up
FastEthernet0/0 10.100.1.4 YES manual up up
Serial1/0 10.45.1.4 YES manual up up
R4#show ip route
O E1 172.31.3.0 [110/51] via 10.100.1.1, 00:36:01, FastEthernet0/0
O E1 172.31.2.0 [110/51] via 10.100.1.1, 00:36:01, FastEthernet0/0
O E1 172.31.1.0 [110/51] via 10.100.1.1, 00:36:01, FastEthernet0/0
O E1 172.31.0.0 [110/51] via 10.100.1.1, 00:36:01, FastEthernet0/0
O IA 172.30.2.0 [110/66] via 10.100.1.2, 00:30:54, FastEthernet0/0
O IA 172.30.3.0 [110/66] via 10.100.1.2, 00:30:54, FastEthernet0/0
O IA 172.30.0.0 [110/66] via 10.100.1.2, 00:31:00, FastEthernet0/0
O IA 172.30.1.0 [110/66] via 10.100.1.2, 00:31:00, FastEthernet0/0
O IA 10.23.1.0 [110/65] via 10.100.1.2, 00:36:06, FastEthernet0/0
C 10.45.1.0 is directly connected, Serial1/0
O IA 10.78.1.0 [110/129] via 10.100.1.6, 00:20:46, FastEthernet0/0
O IA 10.67.1.0 [110/65] via 10.100.1.6, 00:36:09, FastEthernet0/0
C 10.100.1.0 is directly connected, FastEthernet0/0
R4#show ip ospf interface
FastEthernet0/0 is up, line protocol is up
Internet Address 10.100.1.4/24, Area 0
Process ID 1, Router ID 4.4.4.4, Network Type BROADCAST, Cost: 1
Transmit Delay is 1 sec, State DROTHER, Priority 1
Designated Router (ID) 2.2.2.2, Interface address 10.100.1.2
Backup Designated router (ID) 6.6.6.6, Interface address 10.100.1.6
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
oob-resync timeout 40
Hello due in 00:00:03
Supports Link-local Signaling (LLS)
Cisco NSF helper support enabled
IETF NSF helper support enabled
Index 1/2, flood queue length 0
Next 0x0(0)/0x0(0)
Last flood scan length is 1, maximum is 1
Last flood scan time is 0 msec, maximum is 4 msec
Neighbor Count is 3, Adjacent neighbor count is 2
Adjacent with neighbor 2.2.2.2 (Designated Router)
Adjacent with neighbor 6.6.6.6 (Backup Designated Router)
Suppress hello for 0 neighbor(s)
Message digest authentication enabled
Youngest key id is 1
Serial1/0 is up, line protocol is up
Internet Address 10.45.1.4/24, Area 45
Process ID 1, Router ID 4.4.4.4, Network Type POINT_TO_POINT, Cost: 64
Transmit Delay is 1 sec, State POINT_TO_POINT
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
oob-resync timeout 40
Hello due in 00:00:05
Supports Link-local Signaling (LLS)
Cisco NSF helper support enabled
IETF NSF helper support enabled
Index 1/1, flood queue length 0
Next 0x0(0)/0x0(0)
Last flood scan length is 4, maximum is 6
Last flood scan time is 0 msec, maximum is 4 msec
Neighbor Count is 1, Adjacent neighbor count is 1
Adjacent with neighbor 5.5.5.5
Suppress hello for 0 neighbor(s)
R4#show ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface
1.1.1.1 1 2WAY/DROTHER 00:00:33 10.100.1.1 FastEthernet0/0
2.2.2.2 1 FULL/DR 00:00:37 10.100.1.2 FastEthernet0/0
6.6.6.6 1 FULL/BDR 00:00:36 10.100.1.6 FastEthernet0/0
5.5.5.5 0 FULL/ - 00:00:35 10.45.1.5 Serial1/0
Router 5
R5#show run
hostname R5
!
interface Serial1/0
ip address 10.45.1.5 255.255.255.0
clock rate 2016000
!
router ospf 1
router-id 5.5.5.5
area 45 stub
passive-interface default
no passive-interface Serial1/0
network 10.45.1.5 0.0.0.0 area 45
!
end
R5#show ip interface brief | in up
Serial1/0 10.45.1.5 YES manual up up
R5#show ip route
O IA 172.30.2.0 [110/130] via 10.45.1.4, 00:33:37, Serial1/0
O IA 172.30.3.0 [110/130] via 10.45.1.4, 00:33:37, Serial1/0
O IA 172.30.0.0 [110/130] via 10.45.1.4, 00:33:37, Serial1/0
O IA 172.30.1.0 [110/130] via 10.45.1.4, 00:33:37, Serial1/0
O IA 10.23.1.0 [110/129] via 10.45.1.4, 00:37:41, Serial1/0
C 10.45.1.0 is directly connected, Serial1/0
O IA 10.78.1.0 [110/193] via 10.45.1.4, 00:23:27, Serial1/0
O IA 10.67.1.0 [110/129] via 10.45.1.4, 00:37:46, Serial1/0
O IA 10.100.1.0 [110/65] via 10.45.1.4, 00:37:46, Serial1/0
O*IA 0.0.0.0/0 [110/65] via 10.45.1.4, 00:37:46, Serial1/0
R5#show ip ospf interface
Serial1/0 is up, line protocol is up
Internet Address 10.45.1.5/24, Area 45
Process ID 1, Router ID 5.5.5.5, Network Type POINT_TO_POINT, Cost: 64
Transmit Delay is 1 sec, State POINT_TO_POINT
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
oob-resync timeout 40
Hello due in 00:00:00
Supports Link-local Signaling (LLS)
Cisco NSF helper support enabled
IETF NSF helper support enabled
Index 1/1, flood queue length 0
Next 0x0(0)/0x0(0)
Last flood scan length is 1, maximum is 1
Last flood scan time is 0 msec, maximum is 0 msec
Neighbor Count is 1, Adjacent neighbor count is 1
Adjacent with neighbor 4.4.4.4
Suppress hello for 0 neighbor(s)
R5#show ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface
4.4.4.4 0 FULL/ - 00:00:38 10.45.1.4 Serial1/0
Router 6
R6#show running-config
hostname R6
!
interface FastEthernet0/0
ip address 10.100.1.6 255.255.255.0
ip ospf authentication message-digest
ip ospf message-digest-key 1 md5 cisco
!
interface Serial1/0
ip address 10.67.1.6 255.255.255.0
clock rate 2016000
!
router ospf 1
router-id 6.6.6.6
area 67 virtual-link 7.7.7.7
passive-interface default
no passive-interface FastEthernet0/0
no passive-interface Serial1/0
network 10.67.1.6 0.0.0.0 area 67
network 10.100.1.6 0.0.0.0 area 0
!
end
R6#show ip interface brief | in up
FastEthernet0/0 10.100.1.6 YES manual up up
Serial1/0 10.67.1.6 YES manual up up
R6#show ip route
O E1 172.31.3.0 [110/51] via 10.100.1.1, 00:48:37, FastEthernet0/0
O E1 172.31.2.0 [110/51] via 10.100.1.1, 00:48:37, FastEthernet0/0
O E1 172.31.1.0 [110/51] via 10.100.1.1, 00:48:37, FastEthernet0/0
O E1 172.31.0.0 [110/51] via 10.100.1.1, 00:48:37, FastEthernet0/0
O IA 172.30.2.0 [110/66] via 10.100.1.2, 00:35:48, FastEthernet0/0
O IA 172.30.3.0 [110/66] via 10.100.1.2, 00:35:48, FastEthernet0/0
O IA 172.30.0.0 [110/66] via 10.100.1.2, 00:35:54, FastEthernet0/0
O IA 172.30.1.0 [110/66] via 10.100.1.2, 00:35:54, FastEthernet0/0
O IA 10.23.1.0 [110/65] via 10.100.1.2, 00:58:08, FastEthernet0/0
O IA 10.45.1.0 [110/65] via 10.100.1.4, 00:58:08, FastEthernet0/0
O IA 10.78.1.0 [110/128] via 10.67.1.7, 00:25:41, Serial1/0
C 10.67.1.0 is directly connected, Serial1/0
C 10.100.1.0 is directly connected, FastEthernet0/0
R6#show ip ospf interface
OSPF_VL0 is up, line protocol is up
Internet Address 10.67.1.6/24, Area 0
Process ID 1, Router ID 6.6.6.6, Network Type VIRTUAL_LINK, Cost: 64
Configured as demand circuit.
Run as demand circuit.
DoNotAge LSA allowed.
Transmit Delay is 1 sec, State POINT_TO_POINT
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
oob-resync timeout 40
Hello due in 00:00:07
Supports Link-local Signaling (LLS)
Cisco NSF helper support enabled
IETF NSF helper support enabled
Index 2/3, flood queue length 0
Next 0x0(0)/0x0(0)
Last flood scan length is 1, maximum is 1
Last flood scan time is 0 msec, maximum is 0 msec
Neighbor Count is 1, Adjacent neighbor count is 1
Adjacent with neighbor 7.7.7.7 (Hello suppressed)
Suppress hello for 1 neighbor(s)
FastEthernet0/0 is up, line protocol is up
Internet Address 10.100.1.6/24, Area 0
Process ID 1, Router ID 6.6.6.6, Network Type BROADCAST, Cost: 1
Transmit Delay is 1 sec, State BDR, Priority 1
Designated Router (ID) 2.2.2.2, Interface address 10.100.1.2
Backup Designated router (ID) 6.6.6.6, Interface address 10.100.1.6
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
oob-resync timeout 40
Hello due in 00:00:02
Supports Link-local Signaling (LLS)
Cisco NSF helper support enabled
IETF NSF helper support enabled
Index 1/2, flood queue length 0
Next 0x0(0)/0x0(0)
Last flood scan length is 1, maximum is 2
Last flood scan time is 4 msec, maximum is 4 msec
Neighbor Count is 3, Adjacent neighbor count is 3
Adjacent with neighbor 1.1.1.1
Adjacent with neighbor 2.2.2.2 (Designated Router)
Adjacent with neighbor 4.4.4.4
Suppress hello for 0 neighbor(s)
Message digest authentication enabled
Youngest key id is 1
Serial1/0 is up, line protocol is up
Internet Address 10.67.1.6/24, Area 67
Process ID 1, Router ID 6.6.6.6, Network Type POINT_TO_POINT, Cost: 64
Transmit Delay is 1 sec, State POINT_TO_POINT
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
oob-resync timeout 40
Hello due in 00:00:06
Supports Link-local Signaling (LLS)
Cisco NSF helper support enabled
IETF NSF helper support enabled
Index 1/1, flood queue length 0
Next 0x0(0)/0x0(0)
Last flood scan length is 4, maximum is 6
Last flood scan time is 0 msec, maximum is 4 msec
Neighbor Count is 1, Adjacent neighbor count is 1
Adjacent with neighbor 7.7.7.7
Suppress hello for 0 neighbor(s)
R6#show ip ospf virtual-links
Virtual Link OSPF_VL0 to router 7.7.7.7 is up
Run as demand circuit
DoNotAge LSA allowed.
Transit area 67, via interface Serial1/0, Cost of using 64
Transmit Delay is 1 sec, State POINT_TO_POINT,
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
Hello due in 00:00:01
Adjacency State FULL (Hello suppressed)
Index 4/5, retransmission queue length 0, number of retransmission 0
First 0x0(0)/0x0(0) Next 0x0(0)/0x0(0)
Last retransmission scan length is 0, maximum is 0
Last retransmission scan time is 0 msec, maximum is 0 msec
R6#show ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface
7.7.7.7 0 FULL/ - - 10.67.1.7 OSPF_VL0
1.1.1.1 1 FULL/DROTHER 00:00:32 10.100.1.1 FastEthernet0/0
2.2.2.2 1 FULL/DR 00:00:36 10.100.1.2 FastEthernet0/0
4.4.4.4 1 FULL/DROTHER 00:00:34 10.100.1.4 FastEthernet0/0
7.7.7.7 0 FULL/ - 00:00:29 10.67.1.7 Serial1/0
Router 7
R7#show run
hostname R7
!
interface Serial1/0
ip address 10.67.1.7 255.255.255.0
clock rate 2016000
!
interface Serial1/1
ip address 10.78.1.7 255.255.255.0
clock rate 2016000
!
router ospf 1
router-id 7.7.7.7
area 67 virtual-link 6.6.6.6
passive-interface default
no passive-interface Serial1/0
no passive-interface Serial1/1
network 10.67.1.7 0.0.0.0 area 67
network 10.78.1.7 0.0.0.0 area 78
!
end
R7#show ip interface brief | in up
Serial1/0 10.67.1.7 YES manual up up
Serial1/1 10.78.1.7 YES manual up up
R7#show ip route
O E1 172.31.3.0 [110/115] via 10.67.1.6, 00:29:05, Serial1/0
O E1 172.31.2.0 [110/115] via 10.67.1.6, 00:29:05, Serial1/0
O E1 172.31.1.0 [110/115] via 10.67.1.6, 00:29:05, Serial1/0
O E1 172.31.0.0 [110/115] via 10.67.1.6, 00:29:05, Serial1/0
O IA 172.30.2.0 [110/130] via 10.67.1.6, 00:28:12, Serial1/0
O IA 172.30.3.0 [110/130] via 10.67.1.6, 00:28:12, Serial1/0
O IA 172.30.0.0 [110/130] via 10.67.1.6, 00:28:18, Serial1/0
O IA 172.30.1.0 [110/130] via 10.67.1.6, 00:28:18, Serial1/0
O IA 10.23.1.0 [110/129] via 10.67.1.6, 00:28:18, Serial1/0
O IA 10.45.1.0 [110/129] via 10.67.1.6, 00:28:18, Serial1/0
C 10.78.1.0 is directly connected, Serial1/1
C 10.67.1.0 is directly connected, Serial1/0
O 10.100.1.0 [110/65] via 10.67.1.6, 00:28:21, Serial1/0
R7#show ip ospf interface
OSPF_VL0 is up, line protocol is up
Internet Address 10.67.1.7/24, Area 0
Process ID 1, Router ID 7.7.7.7, Network Type VIRTUAL_LINK, Cost: 64
Configured as demand circuit.
Run as demand circuit.
DoNotAge LSA allowed.
Transmit Delay is 1 sec, State POINT_TO_POINT
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
oob-resync timeout 40
Hello due in 00:00:06
Supports Link-local Signaling (LLS)
Cisco NSF helper support enabled
IETF NSF helper support enabled
Index 1/3, flood queue length 0
Next 0x0(0)/0x0(0)
Last flood scan length is 1, maximum is 1
Last flood scan time is 0 msec, maximum is 0 msec
Neighbor Count is 1, Adjacent neighbor count is 1
Adjacent with neighbor 6.6.6.6 (Hello suppressed)
Suppress hello for 1 neighbor(s)
Serial1/0 is up, line protocol is up
Internet Address 10.67.1.7/24, Area 67
Process ID 1, Router ID 7.7.7.7, Network Type POINT_TO_POINT, Cost: 64
Transmit Delay is 1 sec, State POINT_TO_POINT
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
oob-resync timeout 40
Hello due in 00:00:06
Supports Link-local Signaling (LLS)
Cisco NSF helper support enabled
IETF NSF helper support enabled
Index 1/2, flood queue length 0
Next 0x0(0)/0x0(0)
Last flood scan length is 1, maximum is 1
Last flood scan time is 0 msec, maximum is 0 msec
Neighbor Count is 1, Adjacent neighbor count is 1
Adjacent with neighbor 6.6.6.6
Suppress hello for 0 neighbor(s)
Serial1/1 is up, line protocol is up
Internet Address 10.78.1.7/24, Area 78
Process ID 1, Router ID 7.7.7.7, Network Type POINT_TO_POINT, Cost: 64
Transmit Delay is 1 sec, State POINT_TO_POINT
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
oob-resync timeout 40
Hello due in 00:00:06
Supports Link-local Signaling (LLS)
Cisco NSF helper support enabled
IETF NSF helper support enabled
Index 1/1, flood queue length 0
Next 0x0(0)/0x0(0)
Last flood scan length is 3, maximum is 3
Last flood scan time is 0 msec, maximum is 0 msec
Neighbor Count is 1, Adjacent neighbor count is 1
Adjacent with neighbor 8.8.8.8
Suppress hello for 0 neighbor(s)
R7#show ip ospf virtual-links
Virtual Link OSPF_VL0 to router 6.6.6.6 is up
Run as demand circuit
DoNotAge LSA allowed.
Transit area 67, via interface Serial1/0, Cost of using 64
Transmit Delay is 1 sec, State POINT_TO_POINT,
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
Hello due in 00:00:05
Adjacency State FULL (Hello suppressed)
Index 1/2, retransmission queue length 0, number of retransmission 0
First 0x0(0)/0x0(0) Next 0x0(0)/0x0(0)
Last retransmission scan length is 0, maximum is 0
Last retransmission scan time is 0 msec, maximum is 0 msec
R7#show ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface
6.6.6.6 0 FULL/ - - 10.67.1.6 OSPF_VL0
6.6.6.6 0 FULL/ - 00:00:34 10.67.1.6 Serial1/0
8.8.8.8 0 FULL/ - 00:00:30 10.78.1.8 Serial1/1
Router 8
R8#show run
hostname R8
!
interface Serial1/1
ip address 10.78.1.8 255.255.255.0
clock rate 2016000
!
router ospf 1
router-id 8.8.8.8
passive-interface default
no passive-interface Serial1/1
network 10.78.1.8 0.0.0.0 area 78
!
end
R8#show ip interface brief | in up
Serial1/1 10.78.1.8 YES manual up up
R8#show ip route
O E1 172.31.3.0 [110/179] via 10.78.1.7, 00:25:30, Serial1/1
O E1 172.31.2.0 [110/179] via 10.78.1.7, 00:25:30, Serial1/1
O E1 172.31.1.0 [110/179] via 10.78.1.7, 00:25:30, Serial1/1
O E1 172.31.0.0 [110/179] via 10.78.1.7, 00:25:30, Serial1/1
O IA 172.30.2.0 [110/194] via 10.78.1.7, 00:25:30, Serial1/1
O IA 172.30.3.0 [110/194] via 10.78.1.7, 00:25:30, Serial1/1
O IA 172.30.0.0 [110/194] via 10.78.1.7, 00:25:36, Serial1/1
O IA 172.30.1.0 [110/194] via 10.78.1.7, 00:25:36, Serial1/1
O IA 10.23.1.0 [110/193] via 10.78.1.7, 00:25:36, Serial1/1
O IA 10.45.1.0 [110/193] via 10.78.1.7, 00:25:36, Serial1/1
C 10.78.1.0 is directly connected, Serial1/1
O IA 10.67.1.0 [110/128] via 10.78.1.7, 00:25:39, Serial1/1
O IA 10.100.1.0 [110/129] via 10.78.1.7, 00:25:39, Serial1/1
R8#show ip ospf interface
Serial1/1 is up, line protocol is up
Internet Address 10.78.1.8/24, Area 78
Process ID 1, Router ID 8.8.8.8, Network Type POINT_TO_POINT, Cost: 64
Transmit Delay is 1 sec, State POINT_TO_POINT
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
oob-resync timeout 40
Hello due in 00:00:02
Supports Link-local Signaling (LLS)
Cisco NSF helper support enabled
IETF NSF helper support enabled
Index 1/1, flood queue length 0
Next 0x0(0)/0x0(0)
Last flood scan length is 1, maximum is 1
Last flood scan time is 0 msec, maximum is 0 msec
Neighbor Count is 1, Adjacent neighbor count is 1
Adjacent with neighbor 7.7.7.7
Suppress hello for 0 neighbor(s)
R8#show ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface
7.7.7.7 0 FULL/ - 00:00:35 10.78.1.7 Serial1/1
R8#traceroute 172.30.1.1
Type escape sequence to abort.
Tracing the route to 172.30.1.1
1 10.78.1.7 296 msec 252 msec 176 msec
2 10.67.1.6 264 msec 312 msec 168 msec
3 10.100.1.2 292 msec 272 msec 228 msec
4 10.23.1.3 424 msec 432 msec *
R8#ping 172.30.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.30.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 332/572/844 ms
