R1:-
interface Loopback0
ip address 1.1.1.1
255.255.255.255
255.255.255.255
interface
FastEthernet0/0
FastEthernet0/0
Description “Connected to R5”
ip address
15.15.15.1 255.255.255.0
15.15.15.1 255.255.255.0
no shut
interface FastEthernet0/1
Description “Connected to R3”
ip address
13.13.13.1 255.255.255.0
13.13.13.1 255.255.255.0
no shut
interface FastEthernet1/0
Description “Connected to R2”
ip address
12.12.12.1 255.255.255.0
12.12.12.1 255.255.255.0
no shut
router eigrp 1
network 15.15.15.1
0.0.0.0
0.0.0.0
redistribute ospf
1 metric 1 1 1 1 1
1 metric 1 1 1 1 1
router ospf 1
router-id 1.1.1.1
log-adjacency-changes
redistribute eigrp
1 subnets
1 subnets
network 12.12.12.1
0.0.0.0 area 0
0.0.0.0 area 0
network 13.13.13.1
0.0.0.0 area 0
0.0.0.0 area 0
distribute-list
Block_5.5.5.5/32 out \ Distribute list in out direction can be used to filter external routes. This Distribution list is preventing 5.5.5.5/32
Block_5.5.5.5/32 out \ Distribute list in out direction can be used to filter external routes. This Distribution list is preventing 5.5.5.5/32
ip access-list standard Block_5.5.5.5/32
deny 5.5.5.5
permit any
R2:-
nterface Loopback0
ip address 2.2.2.2
255.255.255.255
255.255.255.255
interface Loopback1
ip address
20.1.1.2 255.255.255.0
20.1.1.2 255.255.255.0
ip ospf network
point-to-point
point-to-point
interface Loopback2
ip address
20.1.2.2 255.255.255.0
20.1.2.2 255.255.255.0
ip ospf network
point-to-point
point-to-point
interface FastEthernet1/0
Description “Connected to R1”
ip address
12.12.12.2 255.255.255.0
12.12.12.2 255.255.255.0
no shut
router ospf 1
router-id 2.2.2.2
log-adjacency-changes
network 12.12.12.2
0.0.0.0 area 0
0.0.0.0 area 0
network 20.1.1.2
0.0.0.0 area 0
0.0.0.0 area 0
network 20.1.2.2
0.0.0.0 area 0
0.0.0.0 area 0
R3:-
interface Loopback0
ip address 3.3.3.3
255.255.255.255
255.255.255.255
interface FastEthernet0/1
Description “Connected to R1”
ip address
13.13.13.3 255.255.255.0
13.13.13.3 255.255.255.0
no shut
interface FastEthernet1/0
Description “Connected to R4”
ip address
34.34.34.3 255.255.255.0
34.34.34.3 255.255.255.0
no shut
router ospf 1
router-id 3.3.3.3
log-adjacency-changes
network 13.13.13.3
0.0.0.0 area 0
0.0.0.0 area 0
network 34.34.34.3
0.0.0.0 area 1
0.0.0.0 area 1
R4:-
interface Loopback0
ip address 4.4.4.4
255.255.255.255
255.255.255.255
interface FastEthernet0/0
Description “Connected to R6”
ip address
46.46.46.4 255.255.255.0
46.46.46.4 255.255.255.0
no shut
interface FastEthernet1/0
Description “Connected to R3”
ip address
34.34.34.4 255.255.255.0
34.34.34.4 255.255.255.0
router ospf 1
router-id 4.4.4.4
log-adjacency-changes
network 34.34.34.4
0.0.0.0 area 1
0.0.0.0 area 1
network 46.46.46.4
0.0.0.0 area 1
0.0.0.0 area 1
R5:-
interface Loopback0
ip address 5.5.5.5
255.255.255.255
255.255.255.255
interface Loopback1
ip address
55.55.55.55 255.255.255.255
55.55.55.55 255.255.255.255
!
interface FastEthernet0/0
Description “Connected to R1”
ip address
15.15.15.5 255.255.255.0
15.15.15.5 255.255.255.0
router eigrp 1
network 5.5.5.5
0.0.0.0
0.0.0.0
network 55.55.55.55 0.0.0.0
network 15.15.15.5
0.0.0.0
0.0.0.0
Verification:-
R1:-
R1#sh ip ospf neighbor
Neighbor ID
Pri State Dead Time Address Interface
Pri State Dead Time Address Interface
3.3.3.3
1 FULL/BDR 00:00:37 13.13.13.3 FastEthernet0/1
1 FULL/BDR 00:00:37 13.13.13.3 FastEthernet0/1
2.2.2.2
1 FULL/BDR 00:00:31 12.12.12.2 FastEthernet1/0
1 FULL/BDR 00:00:31 12.12.12.2 FastEthernet1/0
R1#sh ip eigrp neighbors
EIGRP-IPv4 Neighbors for AS(1)
H Address Interface Hold Uptime SRTT
RTO Q Seq
RTO Q Seq
(sec) (ms) Cnt Num
0 15.15.15.5 Fa0/0 10 00:06:10 111
666 0 7
666 0 7
R1#
R1#sh ip route
Codes: L – local, C – connected, S – static, R – RIP, M –
mobile, B – BGP
mobile, B – BGP
D – EIGRP,
EX – EIGRP external, O – OSPF, IA – OSPF inter area
EX – EIGRP external, O – OSPF, IA – OSPF inter area
N1 – OSPF
NSSA external type 1, N2 – OSPF NSSA external type 2
NSSA external type 1, N2 – OSPF NSSA external type 2
E1 – OSPF
external type 1, E2 – OSPF external type 2
external type 1, E2 – OSPF external type 2
i – IS-IS,
su – IS-IS summary, L1 – IS-IS level-1, L2 – IS-IS level-2
su – IS-IS summary, L1 – IS-IS level-1, L2 – IS-IS level-2
ia – IS-IS
inter area, * – candidate default, U – per-user static route
inter area, * – candidate default, U – per-user static route
o – ODR, P –
periodic downloaded static route, H – NHRP
periodic downloaded static route, H – NHRP
+ –
replicated route, % – next hop override
replicated route, % – next hop override
Gateway of last resort is not set
1.0.0.0/32 is
subnetted, 1 subnets
subnetted, 1 subnets
C 1.1.1.1 is
directly connected, Loopback0
directly connected, Loopback0
5.0.0.0/32 is
subnetted, 1 subnets
subnetted, 1 subnets
D 5.5.5.5
[90/156160] via 15.15.15.5, 00:06:13, FastEthernet0/0
[90/156160] via 15.15.15.5, 00:06:13, FastEthernet0/0
6.0.0.0/32 is
subnetted, 1 subnets
subnetted, 1 subnets
O IA 6.6.6.6
[110/4] via 13.13.13.3, 20:53:56, FastEthernet0/1
[110/4] via 13.13.13.3, 20:53:56, FastEthernet0/1
12.0.0.0/8 is
variably subnetted, 2 subnets, 2 masks
variably subnetted, 2 subnets, 2 masks
C
12.12.12.0/24 is directly connected, FastEthernet1/0
12.12.12.0/24 is directly connected, FastEthernet1/0
L
12.12.12.1/32 is directly connected, FastEthernet1/0
12.12.12.1/32 is directly connected, FastEthernet1/0
13.0.0.0/8 is
variably subnetted, 2 subnets, 2 masks
variably subnetted, 2 subnets, 2 masks
C
13.13.13.0/24 is directly connected, FastEthernet0/1
13.13.13.0/24 is directly connected, FastEthernet0/1
L
13.13.13.1/32 is directly connected, FastEthernet0/1
13.13.13.1/32 is directly connected, FastEthernet0/1
15.0.0.0/8 is
variably subnetted, 2 subnets, 2 masks
variably subnetted, 2 subnets, 2 masks
C
15.15.15.0/24 is directly connected, FastEthernet0/0
15.15.15.0/24 is directly connected, FastEthernet0/0
L
15.15.15.1/32 is directly connected, FastEthernet0/0
15.15.15.1/32 is directly connected, FastEthernet0/0
20.0.0.0/24
is subnetted, 2 subnets
is subnetted, 2 subnets
O 20.1.1.0
[110/2] via 12.12.12.2, 22:24:01, FastEthernet1/0
[110/2] via 12.12.12.2, 22:24:01, FastEthernet1/0
O 20.1.2.0
[110/2] via 12.12.12.2, 22:22:42, FastEthernet1/0
[110/2] via 12.12.12.2, 22:22:42, FastEthernet1/0
34.0.0.0/24
is subnetted, 1 subnets
is subnetted, 1 subnets
O IA 34.34.34.0
[110/2] via 13.13.13.3, 21:05:58, FastEthernet0/1
[110/2] via 13.13.13.3, 21:05:58, FastEthernet0/1
46.0.0.0/24
is subnetted, 1 subnets
is subnetted, 1 subnets
O IA 46.46.46.0
[110/3] via 13.13.13.3, 20:53:56, FastEthernet0/1
[110/3] via 13.13.13.3, 20:53:56, FastEthernet0/1
R1#
R2:-
R2# sh ip ospf neighbor
Neighbor ID
Pri State Dead Time Address Interface
Pri State Dead Time Address Interface
1.1.1.1
1 FULL/DR 00:00:31 12.12.12.1 FastEthernet1/0
1 FULL/DR 00:00:31 12.12.12.1 FastEthernet1/0
R2#sh ip route \ No 5.5.5.5/32 route
Codes: L – local, C – connected, S – static, R – RIP, M –
mobile, B – BGP
mobile, B – BGP
D – EIGRP, EX – EIGRP external, O – OSPF, IA
– OSPF inter area
– OSPF inter area
N1 – OSPF
NSSA external type 1, N2 – OSPF NSSA external type 2
NSSA external type 1, N2 – OSPF NSSA external type 2
E1 – OSPF
external type 1, E2 – OSPF external type 2
external type 1, E2 – OSPF external type 2
i – IS-IS,
su – IS-IS summary, L1 – IS-IS level-1, L2 – IS-IS level-2
su – IS-IS summary, L1 – IS-IS level-1, L2 – IS-IS level-2
ia – IS-IS
inter area, * – candidate default, U – per-user static route
inter area, * – candidate default, U – per-user static route
o – ODR, P –
periodic downloaded static route, H – NHRP
periodic downloaded static route, H – NHRP
+ –
replicated route, % – next hop override
replicated route, % – next hop override
Gateway of last resort is not set
2.0.0.0/32 is
subnetted, 1 subnets
subnetted, 1 subnets
C 2.2.2.2 is
directly connected, Loopback0
directly connected, Loopback0
6.0.0.0/32 is
subnetted, 1 subnets
subnetted, 1 subnets
O IA 6.6.6.6
[110/5] via 12.12.12.1, 20:53:25, FastEthernet1/0
[110/5] via 12.12.12.1, 20:53:25, FastEthernet1/0
12.0.0.0/8 is
variably subnetted, 2 subnets, 2 masks
variably subnetted, 2 subnets, 2 masks
C
12.12.12.0/24 is directly connected, FastEthernet1/0
12.12.12.0/24 is directly connected, FastEthernet1/0
L
12.12.12.2/32 is directly connected, FastEthernet1/0
12.12.12.2/32 is directly connected, FastEthernet1/0
13.0.0.0/24
is subnetted, 1 subnets
is subnetted, 1 subnets
O 13.13.13.0
[110/2] via 12.12.12.1, 22:22:12, FastEthernet1/0
[110/2] via 12.12.12.1, 22:22:12, FastEthernet1/0
15.0.0.0/24 is
subnetted, 1 subnets
subnetted, 1 subnets
O E2 15.15.15.0
[110/20] via 12.12.12.1, 17:02:59, FastEthernet1/0
[110/20] via 12.12.12.1, 17:02:59, FastEthernet1/0
20.0.0.0/8 is
variably subnetted, 4 subnets, 2 masks
variably subnetted, 4 subnets, 2 masks
C
20.1.1.0/24 is directly connected, Loopback1
20.1.1.0/24 is directly connected, Loopback1
L
20.1.1.2/32 is directly connected, Loopback1
20.1.1.2/32 is directly connected, Loopback1
C
20.1.2.0/24 is directly connected, Loopback2
20.1.2.0/24 is directly connected, Loopback2
L
20.1.2.2/32 is directly connected, Loopback2
20.1.2.2/32 is directly connected, Loopback2
34.0.0.0/24
is subnetted, 1 subnets
is subnetted, 1 subnets
O IA 34.34.34.0
[110/3] via 12.12.12.1, 21:05:27, FastEthernet1/0
[110/3] via 12.12.12.1, 21:05:27, FastEthernet1/0
46.0.0.0/24
is subnetted, 1 subnets
is subnetted, 1 subnets
O IA 46.46.46.0
[110/4] via 12.12.12.1, 20:53:25, FastEthernet1/0
[110/4] via 12.12.12.1, 20:53:25, FastEthernet1/0
R2#
R3:-
R3#sh ip ospf neighbor
Neighbor ID
Pri State Dead Time Address Interface
Pri State Dead Time Address Interface
1.1.1.1
1 FULL/DR 00:00:38 13.13.13.1
FastEthernet0/1
1 FULL/DR 00:00:38 13.13.13.1
FastEthernet0/1
4.4.4.4
1 FULL/BDR 00:00:39 34.34.34.4 FastEthernet1/0
1 FULL/BDR 00:00:39 34.34.34.4 FastEthernet1/0
R3#sh ip route
Codes: L – local, C – connected, S – static, R – RIP, M –
mobile, B – BGP
mobile, B – BGP
D – EIGRP,
EX – EIGRP external, O – OSPF, IA – OSPF inter area
EX – EIGRP external, O – OSPF, IA – OSPF inter area
N1 – OSPF
NSSA external type 1, N2 – OSPF NSSA external type 2
NSSA external type 1, N2 – OSPF NSSA external type 2
E1 – OSPF
external type 1, E2 – OSPF external type 2
external type 1, E2 – OSPF external type 2
i – IS-IS,
su – IS-IS summary, L1 – IS-IS level-1, L2 – IS-IS level-2
su – IS-IS summary, L1 – IS-IS level-1, L2 – IS-IS level-2
ia – IS-IS
inter area, * – candidate default, U – per-user static route
inter area, * – candidate default, U – per-user static route
o – ODR, P –
periodic downloaded static route, H – NHRP
periodic downloaded static route, H – NHRP
+ –
replicated route, % – next hop override
replicated route, % – next hop override
Gateway of last resort is not set
3.0.0.0/32 is
subnetted, 1 subnets
subnetted, 1 subnets
C 3.3.3.3 is
directly connected, Loopback0
directly connected, Loopback0
6.0.0.0/32 is
subnetted, 1 subnets
subnetted, 1 subnets
O 6.6.6.6
[110/3] via 34.34.34.4, 20:55:35, FastEthernet1/0
[110/3] via 34.34.34.4, 20:55:35, FastEthernet1/0
12.0.0.0/24
is subnetted, 1 subnets
is subnetted, 1 subnets
O 12.12.12.0
[110/2] via 13.13.13.1, 22:47:58, FastEthernet0/1
[110/2] via 13.13.13.1, 22:47:58, FastEthernet0/1
13.0.0.0/8 is
variably subnetted, 2 subnets, 2 masks
variably subnetted, 2 subnets, 2 masks
C
13.13.13.0/24 is directly connected, FastEthernet0/1
13.13.13.0/24 is directly connected, FastEthernet0/1
L
13.13.13.3/32 is directly connected, FastEthernet0/1
13.13.13.3/32 is directly connected, FastEthernet0/1
15.0.0.0/24
is subnetted, 1 subnets
is subnetted, 1 subnets
O E2 15.15.15.0
[110/20] via 13.13.13.1, 17:04:58, FastEthernet0/1
[110/20] via 13.13.13.1, 17:04:58, FastEthernet0/1
20.0.0.0/24
is subnetted, 2 subnets
is subnetted, 2 subnets
O 20.1.1.0
[110/3] via 13.13.13.1, 22:25:39, FastEthernet0/1
[110/3] via 13.13.13.1, 22:25:39, FastEthernet0/1
O 20.1.2.0
[110/3] via 13.13.13.1, 22:24:20, FastEthernet0/1
[110/3] via 13.13.13.1, 22:24:20, FastEthernet0/1
34.0.0.0/8 is
variably subnetted, 2 subnets, 2 masks
variably subnetted, 2 subnets, 2 masks
C
34.34.34.0/24 is directly connected, FastEthernet1/0
34.34.34.0/24 is directly connected, FastEthernet1/0
L
34.34.34.3/32 is directly connected, FastEthernet1/0
34.34.34.3/32 is directly connected, FastEthernet1/0
46.0.0.0/24
is subnetted, 1 subnets
is subnetted, 1 subnets
O 46.46.46.0
[110/2] via 34.34.34.4, 20:55:35, FastEthernet1/0
[110/2] via 34.34.34.4, 20:55:35, FastEthernet1/0
R4:-
R4#sh ip ospf neighbor
Neighbor ID
Pri State Dead Time Address Interface
Pri State Dead Time Address Interface
3.3.3.3
1 FULL/DR 00:00:32 34.34.34.3 FastEthernet1/0
1 FULL/DR 00:00:32 34.34.34.3 FastEthernet1/0
6.6.6.6
1 FULL/DR 00:00:35 46.46.46.6 FastEthernet0/0
1 FULL/DR 00:00:35 46.46.46.6 FastEthernet0/0
R4#sh ip rou
R4#sh ip route
Codes: L – local, C – connected, S – static, R – RIP, M –
mobile, B – BGP
mobile, B – BGP
D – EIGRP,
EX – EIGRP external, O – OSPF, IA – OSPF inter area
EX – EIGRP external, O – OSPF, IA – OSPF inter area
N1 – OSPF
NSSA external type 1, N2 – OSPF NSSA external type 2
NSSA external type 1, N2 – OSPF NSSA external type 2
E1 – OSPF
external type 1, E2 – OSPF external type 2
external type 1, E2 – OSPF external type 2
i – IS-IS,
su – IS-IS summary, L1 – IS-IS level-1, L2 – IS-IS level-2
su – IS-IS summary, L1 – IS-IS level-1, L2 – IS-IS level-2
ia – IS-IS
inter area, * – candidate default, U – per-user static route
inter area, * – candidate default, U – per-user static route
o – ODR, P –
periodic downloaded static route, H – NHRP
periodic downloaded static route, H – NHRP
+ –
replicated route, % – next hop override
replicated route, % – next hop override
Gateway of last resort is not set
4.0.0.0/32 is
subnetted, 1 subnets
subnetted, 1 subnets
C 4.4.4.4 is
directly connected, Loopback0
directly connected, Loopback0
6.0.0.0/32 is
subnetted, 1 subnets
subnetted, 1 subnets
O 6.6.6.6
[110/2] via 46.46.46.6, 00:07:07, FastEthernet0/0
[110/2] via 46.46.46.6, 00:07:07, FastEthernet0/0
12.0.0.0/24
is subnetted, 1 subnets
is subnetted, 1 subnets
O IA 12.12.12.0
[110/3] via 34.34.34.3, 00:07:07, FastEthernet1/0
[110/3] via 34.34.34.3, 00:07:07, FastEthernet1/0
13.0.0.0/24
is subnetted, 1 subnets
is subnetted, 1 subnets
O IA 13.13.13.0
[110/2] via 34.34.34.3, 00:07:07, FastEthernet1/0
[110/2] via 34.34.34.3, 00:07:07, FastEthernet1/0
15.0.0.0/24
is subnetted, 1 subnets
is subnetted, 1 subnets
O E2 15.15.15.0
[110/20] via 34.34.34.3, 00:07:07, FastEthernet1/0
[110/20] via 34.34.34.3, 00:07:07, FastEthernet1/0
20.0.0.0/24
is subnetted, 2 subnets
is subnetted, 2 subnets
O IA 20.1.1.0
[110/4] via 34.34.34.3, 00:07:07, FastEthernet1/0
[110/4] via 34.34.34.3, 00:07:07, FastEthernet1/0
O IA 20.1.2.0
[110/4] via 34.34.34.3, 00:07:07, FastEthernet1/0
[110/4] via 34.34.34.3, 00:07:07, FastEthernet1/0
34.0.0.0/8 is
variably subnetted, 2 subnets, 2 masks
variably subnetted, 2 subnets, 2 masks
C
34.34.34.0/24 is directly connected, FastEthernet1/0
34.34.34.0/24 is directly connected, FastEthernet1/0
L
34.34.34.4/32 is directly connected, FastEthernet1/0
34.34.34.4/32 is directly connected, FastEthernet1/0
46.0.0.0/8 is
variably subnetted, 2 subnets, 2 masks
variably subnetted, 2 subnets, 2 masks
C
46.46.46.0/24 is directly connected, FastEthernet0/0
46.46.46.0/24 is directly connected, FastEthernet0/0
L
46.46.46.4/32 is directly connected, FastEthernet0/0
46.46.46.4/32 is directly connected, FastEthernet0/0
R4#
R5:-
R5#sh ip eigrp neighbors
EIGRP-IPv4 Neighbors for AS(1)
H Address Interface Hold Uptime SRTT
RTO Q Seq
RTO Q Seq
(sec) (ms) Cnt Num
0 15.15.15.1 Fa0/0 12 00:12:16 481 2886 0 7
R5#sh ip rou
R5#sh ip route
Codes: L – local, C – connected, S – static, R – RIP, M –
mobile, B – BGP
mobile, B – BGP
D – EIGRP,
EX – EIGRP external, O – OSPF, IA – OSPF inter area
EX – EIGRP external, O – OSPF, IA – OSPF inter area
N1 – OSPF
NSSA external type 1, N2 – OSPF NSSA external type 2
NSSA external type 1, N2 – OSPF NSSA external type 2
E1 – OSPF
external type 1, E2 – OSPF external type 2
external type 1, E2 – OSPF external type 2
i – IS-IS,
su – IS-IS summary, L1 – IS-IS level-1, L2 – IS-IS level-2
su – IS-IS summary, L1 – IS-IS level-1, L2 – IS-IS level-2
ia – IS-IS
inter area, * – candidate default, U – per-user static route
inter area, * – candidate default, U – per-user static route
o – ODR, P –
periodic downloaded static route, H – NHRP
periodic downloaded static route, H – NHRP
+ –
replicated route, % – next hop override
replicated route, % – next hop override
Gateway of last resort is not set
5.0.0.0/32 is
subnetted, 1 subnets
subnetted, 1 subnets
C 5.5.5.5 is
directly connected, Loopback0
directly connected, Loopback0
6.0.0.0/32 is
subnetted, 1 subnets
subnetted, 1 subnets
D EX 6.6.6.6
[170/2560002816] via 15.15.15.1, 00:12:17, FastEthernet0/0
[170/2560002816] via 15.15.15.1, 00:12:17, FastEthernet0/0
12.0.0.0/24
is subnetted, 1 subnets
is subnetted, 1 subnets
D EX 12.12.12.0
[170/2560002816] via 15.15.15.1, 00:12:17, FastEthernet0/0
[170/2560002816] via 15.15.15.1, 00:12:17, FastEthernet0/0
13.0.0.0/24
is subnetted, 1 subnets
is subnetted, 1 subnets
D EX 13.13.13.0
[170/2560002816] via 15.15.15.1, 00:12:17, FastEthernet0/0
[170/2560002816] via 15.15.15.1, 00:12:17, FastEthernet0/0
15.0.0.0/8 is
variably subnetted, 2 subnets, 2 masks
variably subnetted, 2 subnets, 2 masks
C
15.15.15.0/24 is directly connected, FastEthernet0/0
15.15.15.0/24 is directly connected, FastEthernet0/0
L
15.15.15.5/32 is directly connected, FastEthernet0/0
15.15.15.5/32 is directly connected, FastEthernet0/0
20.0.0.0/24
is subnetted, 2 subnets
is subnetted, 2 subnets
D EX 20.1.1.0
[170/2560002816] via 15.15.15.1, 00:12:17, FastEthernet0/0
[170/2560002816] via 15.15.15.1, 00:12:17, FastEthernet0/0
D EX 20.1.2.0
[170/2560002816] via 15.15.15.1, 00:12:17, FastEthernet0/0
[170/2560002816] via 15.15.15.1, 00:12:17, FastEthernet0/0
34.0.0.0/24
is subnetted, 1 subnets
is subnetted, 1 subnets
D EX 34.34.34.0
[170/2560002816] via 15.15.15.1, 00:12:17, FastEthernet0/0
[170/2560002816] via 15.15.15.1, 00:12:17, FastEthernet0/0
46.0.0.0/24
is subnetted, 1 subnets
is subnetted, 1 subnets
D EX 46.46.46.0
[170/2560002816] via 15.15.15.1, 00:12:17, FastEthernet0/]
[170/2560002816] via 15.15.15.1, 00:12:17, FastEthernet0/]