Monday 15 May 2017

Distribute list in out direction - OSPF





R1:-

interface Loopback0
 ip address 1.1.1.1 255.255.255.255

 interface FastEthernet0/0
Description “Connected to R5”
 ip address 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
no shut

interface FastEthernet1/0
Description “Connected to R2”
 ip address 12.12.12.1 255.255.255.0
no shut

router eigrp 1
 network 15.15.15.1 0.0.0.0
 redistribute ospf 1 metric 1 1 1 1 1

router ospf 1
 router-id 1.1.1.1
 log-adjacency-changes
 redistribute eigrp 1 subnets
 network 12.12.12.1 0.0.0.0 area 0
 network 13.13.13.1 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

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

interface Loopback1
 ip address 20.1.1.2 255.255.255.0
 ip ospf network point-to-point

interface Loopback2
 ip address 20.1.2.2 255.255.255.0
 ip ospf network point-to-point

interface FastEthernet1/0
Description “Connected to R1”
 ip address 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
 network 20.1.1.2 0.0.0.0 area 0
 network 20.1.2.2 0.0.0.0 area 0


R3:-

interface Loopback0
 ip address 3.3.3.3 255.255.255.255

interface FastEthernet0/1
Description “Connected to R1”
 ip address 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
 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
 network 34.34.34.3 0.0.0.0 area 1


R4:-


interface Loopback0
 ip address 4.4.4.4 255.255.255.255

interface FastEthernet0/0
Description “Connected to R6”
 ip address 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

router ospf 1
 router-id 4.4.4.4
 log-adjacency-changes
 network 34.34.34.4 0.0.0.0 area 1
 network 46.46.46.4 0.0.0.0 area 1


R5:-

interface Loopback0
 ip address 5.5.5.5 255.255.255.255


interface Loopback1
 ip address 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

router eigrp 1
 network 5.5.5.5 0.0.0.0
network 55.55.55.55 0.0.0.0
 network 15.15.15.5 0.0.0.0


Verification:-


R1:-

R1#sh ip ospf neighbor

Neighbor ID     Pri   State           Dead Time   Address         Interface
3.3.3.3           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

R1#sh ip eigrp neighbors
EIGRP-IPv4 Neighbors for AS(1)
H   Address                 Interface       Hold Uptime   SRTT   RTO  Q  Seq
                                            (sec)         (ms)       Cnt Num
0   15.15.15.5              Fa0/0             10 00:06:10  111   666  0  7
R1#

R1#sh 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
       i - IS-IS, 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
       o - ODR, P - periodic downloaded static route, H - NHRP
       + - replicated route, % - next hop override

Gateway of last resort is not set

      1.0.0.0/32 is subnetted, 1 subnets
C        1.1.1.1 is directly connected, Loopback0
      5.0.0.0/32 is subnetted, 1 subnets
D        5.5.5.5 [90/156160] via 15.15.15.5, 00:06:13, FastEthernet0/0
      6.0.0.0/32 is subnetted, 1 subnets
O IA     6.6.6.6 [110/4] via 13.13.13.3, 20:53:56, FastEthernet0/1
      12.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C        12.12.12.0/24 is directly connected, FastEthernet1/0
L        12.12.12.1/32 is directly connected, FastEthernet1/0
      13.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C        13.13.13.0/24 is directly connected, FastEthernet0/1
L        13.13.13.1/32 is directly connected, FastEthernet0/1
      15.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C        15.15.15.0/24 is directly connected, FastEthernet0/0
L        15.15.15.1/32 is directly connected, FastEthernet0/0
      20.0.0.0/24 is subnetted, 2 subnets
O        20.1.1.0 [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
      34.0.0.0/24 is subnetted, 1 subnets
O IA     34.34.34.0 [110/2] via 13.13.13.3, 21:05:58, FastEthernet0/1
      46.0.0.0/24 is subnetted, 1 subnets
O IA     46.46.46.0 [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
1.1.1.1           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
       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
       i - IS-IS, 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
       o - ODR, P - periodic downloaded static route, H - NHRP
       + - replicated route, % - next hop override

Gateway of last resort is not set

      2.0.0.0/32 is subnetted, 1 subnets
C        2.2.2.2 is directly connected, Loopback0
      6.0.0.0/32 is subnetted, 1 subnets
O IA     6.6.6.6 [110/5] via 12.12.12.1, 20:53:25, FastEthernet1/0
      12.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C        12.12.12.0/24 is directly connected, FastEthernet1/0
L        12.12.12.2/32 is directly connected, FastEthernet1/0
      13.0.0.0/24 is subnetted, 1 subnets
O        13.13.13.0 [110/2] via 12.12.12.1, 22:22:12, FastEthernet1/0
      15.0.0.0/24 is subnetted, 1 subnets
O E2     15.15.15.0 [110/20] via 12.12.12.1, 17:02:59, FastEthernet1/0
      20.0.0.0/8 is variably subnetted, 4 subnets, 2 masks
C        20.1.1.0/24 is directly connected, Loopback1
L        20.1.1.2/32 is directly connected, Loopback1
C        20.1.2.0/24 is directly connected, Loopback2
L        20.1.2.2/32 is directly connected, Loopback2
      34.0.0.0/24 is subnetted, 1 subnets
O IA     34.34.34.0 [110/3] via 12.12.12.1, 21:05:27, FastEthernet1/0
      46.0.0.0/24 is subnetted, 1 subnets
O IA     46.46.46.0 [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
1.1.1.1           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

R3#sh ip route    \\ No 5.5.5.5/32 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
       i - IS-IS, 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
       o - ODR, P - periodic downloaded static route, H - NHRP
       + - replicated route, % - next hop override

Gateway of last resort is not set

      3.0.0.0/32 is subnetted, 1 subnets
C        3.3.3.3 is directly connected, Loopback0
      6.0.0.0/32 is subnetted, 1 subnets
O        6.6.6.6 [110/3] via 34.34.34.4, 20:55:35, FastEthernet1/0
      12.0.0.0/24 is subnetted, 1 subnets
O        12.12.12.0 [110/2] via 13.13.13.1, 22:47:58, FastEthernet0/1
      13.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C        13.13.13.0/24 is directly connected, FastEthernet0/1
L        13.13.13.3/32 is directly connected, FastEthernet0/1
      15.0.0.0/24 is subnetted, 1 subnets
O E2     15.15.15.0 [110/20] via 13.13.13.1, 17:04:58, FastEthernet0/1
      20.0.0.0/24 is subnetted, 2 subnets
O        20.1.1.0 [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
      34.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C        34.34.34.0/24 is directly connected, FastEthernet1/0
L        34.34.34.3/32 is directly connected, FastEthernet1/0
      46.0.0.0/24 is subnetted, 1 subnets
O        46.46.46.0 [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
3.3.3.3           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
R4#sh ip rou
R4#sh 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
       i - IS-IS, 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
       o - ODR, P - periodic downloaded static route, H - NHRP
       + - replicated route, % - next hop override

Gateway of last resort is not set

      4.0.0.0/32 is subnetted, 1 subnets
C        4.4.4.4 is directly connected, Loopback0
      6.0.0.0/32 is subnetted, 1 subnets
O        6.6.6.6 [110/2] via 46.46.46.6, 00:07:07, FastEthernet0/0
      12.0.0.0/24 is subnetted, 1 subnets
O IA     12.12.12.0 [110/3] via 34.34.34.3, 00:07:07, FastEthernet1/0
      13.0.0.0/24 is subnetted, 1 subnets
O IA     13.13.13.0 [110/2] via 34.34.34.3, 00:07:07, FastEthernet1/0
      15.0.0.0/24 is subnetted, 1 subnets
O E2     15.15.15.0 [110/20] via 34.34.34.3, 00:07:07, FastEthernet1/0
      20.0.0.0/24 is subnetted, 2 subnets
O IA     20.1.1.0 [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
      34.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C        34.34.34.0/24 is directly connected, FastEthernet1/0
L        34.34.34.4/32 is directly connected, FastEthernet1/0
      46.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C        46.46.46.0/24 is directly connected, FastEthernet0/0
L        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
                                            (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
       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
       i - IS-IS, 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
       o - ODR, P - periodic downloaded static route, H - NHRP
       + - replicated route, % - next hop override

Gateway of last resort is not set

      5.0.0.0/32 is subnetted, 1 subnets
C        5.5.5.5 is directly connected, Loopback0
      6.0.0.0/32 is subnetted, 1 subnets
D EX     6.6.6.6 [170/2560002816] via 15.15.15.1, 00:12:17, FastEthernet0/0
      12.0.0.0/24 is subnetted, 1 subnets
D EX     12.12.12.0 [170/2560002816] via 15.15.15.1, 00:12:17, FastEthernet0/0
      13.0.0.0/24 is subnetted, 1 subnets
D EX     13.13.13.0 [170/2560002816] via 15.15.15.1, 00:12:17, FastEthernet0/0
      15.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C        15.15.15.0/24 is directly connected, FastEthernet0/0
L        15.15.15.5/32 is directly connected, FastEthernet0/0
      20.0.0.0/24 is subnetted, 2 subnets
D EX     20.1.1.0 [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
      34.0.0.0/24 is subnetted, 1 subnets
D EX     34.34.34.0 [170/2560002816] via 15.15.15.1, 00:12:17, FastEthernet0/0
      46.0.0.0/24 is subnetted, 1 subnets

D EX     46.46.46.0 [170/2560002816] via 15.15.15.1, 00:12:17, FastEthernet0/]
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