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Belajar mengkonfigurasi Stub,Totally stub,and Not So Stubby area (NSSA) pada OSPF

14 July 2010
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Topology yang digunakan adalah sebagai berikut :
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Routing table sebelum stubby area dikonfigurasi(cnc1):
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cnc1#sh ip route
Codes: 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

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
 2.0.0.0/32 is subnetted, 1 subnets
O IA    2.2.2.2 [110/2] via 192.168.10.2, 00:06:28, FastEthernet0/0
 3.0.0.0/32 is subnetted, 1 subnets
O IA    3.3.3.3 [110/3] via 192.168.10.2, 00:02:07, FastEthernet0/0
O IA 192.168.30.0/24 [110/3] via 192.168.10.2, 00:02:07, FastEthernet0/0
 4.0.0.0/32 is subnetted, 1 subnets
O IA    4.4.4.4 [110/4] via 192.168.10.2, 00:02:07, FastEthernet0/0
 5.0.0.0/32 is subnetted, 1 subnets
O IA    5.5.5.5 [110/5] via 192.168.10.2, 00:02:07, FastEthernet0/0
C    192.168.10.0/24 is directly connected, FastEthernet0/0
O IA 192.168.40.0/24 [110/4] via 192.168.10.2, 00:02:07, FastEthernet0/0
 172.16.0.0/24 is subnetted, 2 subnets
O E2    172.16.20.0 [110/20] via 192.168.10.2, 00:02:02, FastEthernet0/0
O E2    172.16.10.0 [110/20] via 192.168.10.2, 00:01:07, FastEthernet0/0
O IA 192.168.20.0/24 [110/2] via 192.168.10.2, 00:06:28, FastEthernet0/0
cnc1#
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cnc1#ping 172.16.20.2

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.20.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 528/581/676 ms
cnc1#
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Stubby area: block's type 5 LSA's from entering,
 external summary route (type 5) Lsa's are
 replaced by the ABR with a default route
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command nya:
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cnc1(config-router)#area 1 stub
cnc1(config-router)#

cnc2(config-router)#area 1 stub
cnc2(config-router)#
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Result :
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cnc1#sh ip route
Codes: 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

Gateway of last resort is 192.168.10.2 to network 0.0.0.0

 1.0.0.0/32 is subnetted, 1 subnets
C       1.1.1.1 is directly connected, Loopback0
 2.0.0.0/32 is subnetted, 1 subnets
O IA    2.2.2.2 [110/2] via 192.168.10.2, 00:00:08, FastEthernet0/0
 3.0.0.0/32 is subnetted, 1 subnets
O IA    3.3.3.3 [110/3] via 192.168.10.2, 00:00:08, FastEthernet0/0
O IA 192.168.30.0/24 [110/3] via 192.168.10.2, 00:00:08, FastEthernet0/0
 4.0.0.0/32 is subnetted, 1 subnets
O IA    4.4.4.4 [110/4] via 192.168.10.2, 00:00:08, FastEthernet0/0
 5.0.0.0/32 is subnetted, 1 subnets
O IA    5.5.5.5 [110/5] via 192.168.10.2, 00:00:09, FastEthernet0/0
C    192.168.10.0/24 is directly connected, FastEthernet0/0
O IA 192.168.40.0/24 [110/4] via 192.168.10.2, 00:00:09, FastEthernet0/0
O IA 192.168.20.0/24 [110/2] via 192.168.10.2, 00:00:09, FastEthernet0/0
O*IA 0.0.0.0/0 [110/2] via 192.168.10.2, 00:00:09, FastEthernet0/0
cnc1#
--------------------------------------------------------------------------
cnc1#ping 172.16.20.2

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.20.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 504/549/624 ms
cnc1#
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Routing table sebelum totally stubby area dikonfigurasi(cnc5):
--------------------------------------------------------------------------
cnc5#sh ip route
Codes: 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

Gateway of last resort is not set

 1.0.0.0/32 is subnetted, 1 subnets
O IA    1.1.1.1 [110/5] via 192.168.40.1, 00:00:16, FastEthernet0/0
 2.0.0.0/32 is subnetted, 1 subnets
O IA    2.2.2.2 [110/4] via 192.168.40.1, 00:05:38, FastEthernet0/0
 3.0.0.0/32 is subnetted, 1 subnets
O IA    3.3.3.3 [110/3] via 192.168.40.1, 00:05:38, FastEthernet0/0
O IA 192.168.30.0/24 [110/2] via 192.168.40.1, 00:12:05, FastEthernet0/0
 4.0.0.0/32 is subnetted, 1 subnets
O IA    4.4.4.4 [110/2] via 192.168.40.1, 00:12:05, FastEthernet0/0
 5.0.0.0/32 is subnetted, 1 subnets
C       5.5.5.5 is directly connected, Loopback0
O IA 192.168.10.0/24 [110/4] via 192.168.40.1, 00:05:38, FastEthernet0/0
C    192.168.40.0/24 is directly connected, FastEthernet0/0
 172.16.0.0/24 is subnetted, 2 subnets
O E2    172.16.20.0 [110/20] via 192.168.40.1, 00:00:11, FastEthernet0/0
O E2    172.16.10.0 [110/20] via 192.168.40.1, 00:00:11, FastEthernet0/0
O IA 192.168.20.0/24 [110/3] via 192.168.40.1, 00:05:39, FastEthernet0/0
cnc5#
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cnc5#ping 172.16.20.2

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.20.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 460/528/600 ms
cnc5#
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Totally Stubby area: block's type 3,4,and 5 LSA's from entering,
 a stub area which also replaces summary
 LSA's with a default route
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command:
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cnc4(config)#router ospf 1
cnc4(config-router)#area 2 stub no-summary
cnc4(config-router)#

cnc5(config)#router ospf 1
cnc5(config-router)#area 2 stub no-summary
cnc5(config)#
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Result :
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cnc5#sh ip route
Codes: 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

Gateway of last resort is 192.168.40.1 to network 0.0.0.0

 5.0.0.0/32 is subnetted, 1 subnets
C       5.5.5.5 is directly connected, Loopback0
C    192.168.40.0/24 is directly connected, FastEthernet0/0
O*IA 0.0.0.0/0 [110/2] via 192.168.40.1, 00:00:03, FastEthernet0/0
cnc5#
-----------------------------------------------------------
cnc5#ping 172.16.20.2

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.20.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 524/576/628 ms
cnc5#

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Sekarang kita akan belajar mengkonfigurasi NSSA
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Topology yang digunakan adalah sebagai berikut :
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Routing table sebelum NSSA area dikonfigurasi(cnc4):
-----------------------------------------------------------
cnc4#sh ip route
Codes: 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

Gateway of last resort is not set

 1.0.0.0/32 is subnetted, 1 subnets
O IA    1.1.1.1 [110/4] via 192.168.30.1, 00:01:46, FastEthernet1/0
 2.0.0.0/32 is subnetted, 1 subnets
O       2.2.2.2 [110/3] via 192.168.30.1, 00:01:46, FastEthernet1/0
 3.0.0.0/32 is subnetted, 1 subnets
O       3.3.3.3 [110/2] via 192.168.30.1, 00:01:46, FastEthernet1/0
C    192.168.30.0/24 is directly connected, FastEthernet1/0
 4.0.0.0/32 is subnetted, 1 subnets
C       4.4.4.4 is directly connected, Loopback0
 5.0.0.0/32 is subnetted, 1 subnets
O       5.5.5.5 [110/2] via 192.168.40.2, 00:01:46, FastEthernet0/0
O IA 192.168.10.0/24 [110/3] via 192.168.30.1, 00:01:46, FastEthernet1/0
C    192.168.40.0/24 is directly connected, FastEthernet0/0
 172.16.0.0/24 is subnetted, 2 subnets
O E2    172.16.20.0 [110/20] via 192.168.40.2, 00:01:46, FastEthernet0/0
O E2    172.16.10.0 [110/20] via 192.168.40.2, 00:01:46, FastEthernet0/0
O    192.168.20.0/24 [110/2] via 192.168.30.1, 00:01:46, FastEthernet1/0
cnc4#
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Routing table sebelum NSSA area dikonfigurasi(cnc5):
-----------------------------------------------------------
cnc5#sh ip route
Codes: 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

Gateway of last resort is not set

 1.0.0.0/32 is subnetted, 1 subnets
O IA    1.1.1.1 [110/5] via 192.168.40.1, 00:02:14, FastEthernet0/0
 2.0.0.0/32 is subnetted, 1 subnets
O IA    2.2.2.2 [110/4] via 192.168.40.1, 00:02:14, FastEthernet0/0
 3.0.0.0/32 is subnetted, 1 subnets
O IA    3.3.3.3 [110/3] via 192.168.40.1, 00:02:14, FastEthernet0/0
O IA 192.168.30.0/24 [110/2] via 192.168.40.1, 00:02:17, FastEthernet0/0
 4.0.0.0/32 is subnetted, 1 subnets
O IA    4.4.4.4 [110/2] via 192.168.40.1, 00:02:17, FastEthernet0/0
 5.0.0.0/32 is subnetted, 1 subnets
C       5.5.5.5 is directly connected, Loopback0
O IA 192.168.10.0/24 [110/4] via 192.168.40.1, 00:02:14, FastEthernet0/0
C    192.168.40.0/24 is directly connected, FastEthernet0/0
 172.16.0.0/24 is subnetted, 2 subnets
R       172.16.20.0 [120/1] via 172.16.10.2, 00:00:03, FastEthernet1/0
C       172.16.10.0 is directly connected, FastEthernet1/0
O IA 192.168.20.0/24 [110/3] via 192.168.40.1, 00:02:15, FastEthernet0/0
cnc5#
-----------------------------------------------------------
Routing table sebelum NSSA area dikonfigurasi(cnc1):
-----------------------------------------------------------
cnc1#sh ip route
Codes: 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

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
 2.0.0.0/32 is subnetted, 1 subnets
O IA    2.2.2.2 [110/2] via 192.168.10.2, 00:11:34, FastEthernet0/0
 3.0.0.0/32 is subnetted, 1 subnets
O IA    3.3.3.3 [110/3] via 192.168.10.2, 00:05:11, FastEthernet0/0
O IA 192.168.30.0/24 [110/3] via 192.168.10.2, 00:05:11, FastEthernet0/0
 4.0.0.0/32 is subnetted, 1 subnets
O IA    4.4.4.4 [110/4] via 192.168.10.2, 00:01:54, FastEthernet0/0
 5.0.0.0/32 is subnetted, 1 subnets
O IA    5.5.5.5 [110/5] via 192.168.10.2, 00:01:46, FastEthernet0/0
C    192.168.10.0/24 is directly connected, FastEthernet0/0
O IA 192.168.40.0/24 [110/4] via 192.168.10.2, 00:01:54, FastEthernet0/0
 172.16.0.0/24 is subnetted, 2 subnets
O E2    172.16.20.0 [110/20] via 192.168.10.2, 00:01:42, FastEthernet0/0
O E2    172.16.10.0 [110/20] via 192.168.10.2, 00:01:42, FastEthernet0/0
O IA 192.168.20.0/24 [110/2] via 192.168.10.2, 00:11:34, FastEthernet0/0
cnc1#
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OSPF database sebelum NSSA area dikonfigurasi(cnc4):
-----------------------------------------------------------
cnc4#sh ip ospf database

 OSPF Router with ID (4.4.4.4) (Process ID 1)

 Router Link States (Area 0)

Link ID         ADV Router      Age         Seq#       Checksum Link count
2.2.2.2         2.2.2.2         460         0x80000007 0x008E76 2
3.3.3.3         3.3.3.3         146         0x8000000F 0x00329B 3
4.4.4.4         4.4.4.4         142         0x80000009 0x0008CE 2

 Net Link States (Area 0)

Link ID         ADV Router      Age         Seq#       Checksum
192.168.20.2    3.3.3.3         462         0x80000007 0x006133
192.168.30.1    3.3.3.3         143         0x80000005 0x006520

 Summary Net Link States (Area 0)

Link ID         ADV Router      Age         Seq#       Checksum
1.1.1.1         2.2.2.2         922         0x80000001 0x0033FB
5.5.5.5         4.4.4.4         132         0x80000001 0x003ED8
192.168.10.0    2.2.2.2         1035        0x80000001 0x003789
192.168.40.0    4.4.4.4         141         0x80000005 0x00A7EE

 Summary ASB Link States (Area 0)

Link ID         ADV Router      Age         Seq#       Checksum
5.5.5.5         4.4.4.4         132         0x80000001 0x0026F0

 Router Link States (Area 2)

Link ID         ADV Router      Age         Seq#       Checksum Link count
4.4.4.4         4.4.4.4         142         0x80000008 0x00FFE4 1
5.5.5.5         5.5.5.5         146         0x80000004 0x00CEEA 2

 Net Link States (Area 2)

Link ID         ADV Router      Age         Seq#       Checksum
192.168.40.2    5.5.5.5         146         0x80000001 0x00FC71

 Summary Net Link States (Area 2)

Link ID         ADV Router      Age         Seq#       Checksum
1.1.1.1         4.4.4.4         132         0x80000001 0x000B1A
2.2.2.2         4.4.4.4         132         0x80000001 0x00D24F
3.3.3.3         4.4.4.4         132         0x80000001 0x009A84
4.4.4.4         4.4.4.4         141         0x80000005 0x005ABD
192.168.10.0    4.4.4.4         132         0x80000001 0x000FA7
192.168.20.0    4.4.4.4         132         0x80000001 0x009617
192.168.30.0    4.4.4.4         141         0x80000005 0x00168A

 Summary ASB Link States (Area 2)

Link ID         ADV Router      Age         Seq#       Checksum
3.3.3.3         4.4.4.4         132         0x80000001 0x00829C

 Type-5 AS External Link States

Link ID         ADV Router      Age         Seq#       Checksum Tag
172.16.10.0     5.5.5.5         171         0x80000002 0x005B69 0
172.16.20.0     5.5.5.5         171         0x80000002 0x00ECCD 0
cnc4#
-----------------------------------------------------------
OSPF database sebelum NSSA area dikonfigurasi(cnc5):
-----------------------------------------------------------
cnc5#sh ip ospf database

 OSPF Router with ID (5.5.5.5) (Process ID 1)

 Router Link States (Area 2)

Link ID         ADV Router      Age         Seq#       Checksum Link count
4.4.4.4         4.4.4.4         181         0x80000008 0x00FFE4 1
5.5.5.5         5.5.5.5         187         0x80000004 0x00CEEA 2

 Net Link States (Area 2)

Link ID         ADV Router      Age         Seq#       Checksum
192.168.40.2    5.5.5.5         187         0x80000001 0x00FC71

 Summary Net Link States (Area 2)

Link ID         ADV Router      Age         Seq#       Checksum
1.1.1.1         4.4.4.4         172         0x80000001 0x000B1A
2.2.2.2         4.4.4.4         172         0x80000001 0x00D24F
3.3.3.3         4.4.4.4         172         0x80000001 0x009A84
4.4.4.4         4.4.4.4         181         0x80000005 0x005ABD
192.168.10.0    4.4.4.4         172         0x80000001 0x000FA7
192.168.20.0    4.4.4.4         172         0x80000001 0x009617
192.168.30.0    4.4.4.4         181         0x80000005 0x00168A

 Summary ASB Link States (Area 2)

Link ID         ADV Router      Age         Seq#       Checksum
3.3.3.3         4.4.4.4         172         0x80000001 0x00829C

 Type-5 AS External Link States

Link ID         ADV Router      Age         Seq#       Checksum Tag
172.16.10.0     5.5.5.5         213         0x80000002 0x005B69 0
172.16.20.0     5.5.5.5         213         0x80000002 0x00ECCD 0
cnc5#
-----------------------------------------------------------
OSPF database sebelum NSSA area dikonfigurasi(cnc1):
-----------------------------------------------------------
cnc1#sh ip ospf database

 OSPF Router with ID (1.1.1.1) (Process ID 1)

 Router Link States (Area 1)

Link ID         ADV Router      Age         Seq#       Checksum Link count
1.1.1.1         1.1.1.1         732         0x80000002 0x00DB50 2
2.2.2.2         2.2.2.2         731         0x80000002 0x001225 1

 Net Link States (Area 1)

Link ID         ADV Router      Age         Seq#       Checksum
192.168.10.1    1.1.1.1         732         0x80000001 0x00DDD7

 Summary Net Link States (Area 1)

Link ID         ADV Router      Age         Seq#       Checksum
2.2.2.2         2.2.2.2         733         0x80000003 0x00F633
3.3.3.3         2.2.2.2         341         0x80000001 0x00D650
4.4.4.4         2.2.2.2         143         0x80000001 0x00B26F
5.5.5.5         2.2.2.2         135         0x80000001 0x008E8E
192.168.20.0    2.2.2.2         733         0x80000003 0x00C4EF
192.168.30.0    2.2.2.2         341         0x80000001 0x006447
192.168.40.0    2.2.2.2         143         0x80000001 0x00FFA0

 Summary ASB Link States (Area 1)

Link ID         ADV Router      Age         Seq#       Checksum
3.3.3.3         2.2.2.2         341         0x80000001 0x00BE68
5.5.5.5         2.2.2.2         136         0x80000001 0x0076A6

 Type-5 AS External Link States

Link ID         ADV Router      Age         Seq#       Checksum Tag
172.16.10.0     5.5.5.5         178         0x80000002 0x005B69 0
172.16.20.0     5.5.5.5         178         0x80000002 0x00ECCD 0
cnc1#
-----------------------------------------------------------
NSSA area, passes external routes through via type 7
LSA's, these convert back to type 5 once they reach
the backbone.
-----------------------------------------------------------
Command nya adalah sebagai berikut :
-----------------------------------------------------------
cnc4#conf t
cnc4(config)#router ospf 1
cnc4(config-router)#area 2 nssa
cnc4(config-router)#

cnc5#conf t
cnc5(config)#router ospf 1
cnc5(config-router)#area 2 nssa
cnc5(config-router)#
-----------------------------------------------------------
Hasilnya adalah sebaai berikut :
-----------------------------------------------------------
-----------------------------------------------------------
Routing table setelah NSSA area dikonfigurasi(cnc4):
-----------------------------------------------------------
cnc4#sh ip route
Codes: 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

Gateway of last resort is not set

 1.0.0.0/32 is subnetted, 1 subnets
O IA    1.1.1.1 [110/4] via 192.168.30.1, 00:00:20, FastEthernet1/0
 2.0.0.0/32 is subnetted, 1 subnets
O       2.2.2.2 [110/3] via 192.168.30.1, 00:00:30, FastEthernet1/0
 3.0.0.0/32 is subnetted, 1 subnets
O       3.3.3.3 [110/2] via 192.168.30.1, 00:00:30, FastEthernet1/0
C    192.168.30.0/24 is directly connected, FastEthernet1/0
 4.0.0.0/32 is subnetted, 1 subnets
C       4.4.4.4 is directly connected, Loopback0
 5.0.0.0/32 is subnetted, 1 subnets
O       5.5.5.5 [110/2] via 192.168.40.2, 00:00:20, FastEthernet0/0
O IA 192.168.10.0/24 [110/3] via 192.168.30.1, 00:00:20, FastEthernet1/0
C    192.168.40.0/24 is directly connected, FastEthernet0/0
 172.16.0.0/24 is subnetted, 2 subnets
O N2    172.16.20.0 [110/20] via 192.168.40.2, 00:00:20, FastEthernet0/0
O N2    172.16.10.0 [110/20] via 192.168.40.2, 00:00:20, FastEthernet0/0
O    192.168.20.0/24 [110/2] via 192.168.30.1, 00:00:30, FastEthernet1/0
cnc4#
-----------------------------------------------------------
Routing table setelah NSSA area dikonfigurasi(cnc5):
-----------------------------------------------------------
cnc5#sh ip route
Codes: 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

Gateway of last resort is not set

 1.0.0.0/32 is subnetted, 1 subnets
O IA    1.1.1.1 [110/5] via 192.168.40.1, 00:00:47, FastEthernet0/0
 2.0.0.0/32 is subnetted, 1 subnets
O IA    2.2.2.2 [110/4] via 192.168.40.1, 00:00:47, FastEthernet0/0
 3.0.0.0/32 is subnetted, 1 subnets
O IA    3.3.3.3 [110/3] via 192.168.40.1, 00:00:47, FastEthernet0/0
O IA 192.168.30.0/24 [110/2] via 192.168.40.1, 00:00:47, FastEthernet0/0
 4.0.0.0/32 is subnetted, 1 subnets
O IA    4.4.4.4 [110/2] via 192.168.40.1, 00:00:47, FastEthernet0/0
 5.0.0.0/32 is subnetted, 1 subnets
C       5.5.5.5 is directly connected, Loopback0
O IA 192.168.10.0/24 [110/4] via 192.168.40.1, 00:00:47, FastEthernet0/0
C    192.168.40.0/24 is directly connected, FastEthernet0/0
 172.16.0.0/24 is subnetted, 2 subnets
R       172.16.20.0 [120/1] via 172.16.10.2, 00:00:14, FastEthernet1/0
C       172.16.10.0 is directly connected, FastEthernet1/0
O IA 192.168.20.0/24 [110/3] via 192.168.40.1, 00:00:47, FastEthernet0/0
cnc5#
-----------------------------------------------------------
Routing table setelah NSSA area dikonfigurasi(cnc1):
-----------------------------------------------------------
cnc1#sh ip route
Codes: 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

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
 2.0.0.0/32 is subnetted, 1 subnets
O IA    2.2.2.2 [110/2] via 192.168.10.2, 00:13:33, FastEthernet0/0
 3.0.0.0/32 is subnetted, 1 subnets
O IA    3.3.3.3 [110/3] via 192.168.10.2, 00:07:11, FastEthernet0/0
O IA 192.168.30.0/24 [110/3] via 192.168.10.2, 00:07:11, FastEthernet0/0
 4.0.0.0/32 is subnetted, 1 subnets
O IA    4.4.4.4 [110/4] via 192.168.10.2, 00:03:54, FastEthernet0/0
 5.0.0.0/32 is subnetted, 1 subnets
O IA    5.5.5.5 [110/5] via 192.168.10.2, 00:00:37, FastEthernet0/0
C    192.168.10.0/24 is directly connected, FastEthernet0/0
O IA 192.168.40.0/24 [110/4] via 192.168.10.2, 00:03:54, FastEthernet0/0
 172.16.0.0/24 is subnetted, 2 subnets
O E2    172.16.20.0 [110/20] via 192.168.10.2, 00:00:31, FastEthernet0/0
O E2    172.16.10.0 [110/20] via 192.168.10.2, 00:00:31, FastEthernet0/0
O IA 192.168.20.0/24 [110/2] via 192.168.10.2, 00:13:34, FastEthernet0/0
cnc1#
-----------------------------------------------------------
OSPF database setelah NSSA area dikonfigurasi(cnc4):
-----------------------------------------------------------
cnc4#sh ip ospf database

 OSPF Router with ID (4.4.4.4) (Process ID 1)

 Router Link States (Area 0)

Link ID         ADV Router      Age         Seq#       Checksum Link count
2.2.2.2         2.2.2.2         577         0x80000007 0x008E76 2
3.3.3.3         3.3.3.3         263         0x8000000F 0x00329B 3
4.4.4.4         4.4.4.4         61          0x8000000A 0x000CC7 2

 Net Link States (Area 0)

Link ID         ADV Router      Age         Seq#       Checksum
192.168.20.2    3.3.3.3         579         0x80000007 0x006133
192.168.30.1    3.3.3.3         260         0x80000005 0x006520

 Summary Net Link States (Area 0)

Link ID         ADV Router      Age         Seq#       Checksum
1.1.1.1         2.2.2.2         1039        0x80000001 0x0033FB
5.5.5.5         4.4.4.4         46          0x80000001 0x003ED8
192.168.10.0    2.2.2.2         1152        0x80000001 0x003789
192.168.40.0    4.4.4.4         258         0x80000005 0x00A7EE

 Router Link States (Area 2)

Link ID         ADV Router      Age         Seq#       Checksum Link count
4.4.4.4         4.4.4.4         56          0x8000000A 0x00A733 1
5.5.5.5         5.5.5.5         57          0x80000006 0x007041 2

 Net Link States (Area 2)

Link ID         ADV Router      Age         Seq#       Checksum
192.168.40.2    5.5.5.5         72          0x80000003 0x009EC7

 Summary Net Link States (Area 2)

Link ID         ADV Router      Age         Seq#       Checksum
1.1.1.1         4.4.4.4         62          0x80000002 0x00AE6F
2.2.2.2         4.4.4.4         62          0x80000002 0x0076A4
3.3.3.3         4.4.4.4         62          0x80000002 0x003ED9
4.4.4.4         4.4.4.4         62          0x80000006 0x00FD13
192.168.10.0    4.4.4.4         62          0x80000002 0x00B2FC
192.168.20.0    4.4.4.4         62          0x80000002 0x003A6C
192.168.30.0    4.4.4.4         62          0x80000006 0x00B9DF

 Type-7 AS External Link States (Area 2)

Link ID         ADV Router      Age         Seq#       Checksum Tag
172.16.10.0     5.5.5.5         68          0x80000001 0x00C3E3 0
172.16.20.0     5.5.5.5         69          0x80000001 0x005548 0

 Type-5 AS External Link States

Link ID         ADV Router      Age         Seq#       Checksum Tag
172.16.10.0     4.4.4.4         41          0x80000001 0x00763F 0
172.16.20.0     4.4.4.4         41          0x80000001 0x0008A3 0
cnc4#
-----------------------------------------------------------
OSPF database setelah NSSA area dikonfigurasi(cnc5):
-----------------------------------------------------------
cnc5#sh ip ospf database

 OSPF Router with ID (5.5.5.5) (Process ID 1)

 Router Link States (Area 2)

Link ID         ADV Router      Age         Seq#       Checksum Link count
4.4.4.4         4.4.4.4         86          0x8000000A 0x00A733 1
5.5.5.5         5.5.5.5         85          0x80000006 0x007041 2

 Net Link States (Area 2)

Link ID         ADV Router      Age         Seq#       Checksum
192.168.40.2    5.5.5.5         80          0x80000003 0x009EC7

 Summary Net Link States (Area 2)

Link ID         ADV Router      Age         Seq#       Checksum
1.1.1.1         4.4.4.4         91          0x80000002 0x00AE6F
2.2.2.2         4.4.4.4         91          0x80000002 0x0076A4
3.3.3.3         4.4.4.4         91          0x80000002 0x003ED9
4.4.4.4         4.4.4.4         91          0x80000006 0x00FD13
192.168.10.0    4.4.4.4         91          0x80000002 0x00B2FC
192.168.20.0    4.4.4.4         91          0x80000002 0x003A6C
192.168.30.0    4.4.4.4         91          0x80000006 0x00B9DF

 Type-7 AS External Link States (Area 2)

Link ID         ADV Router      Age         Seq#       Checksum Tag
172.16.10.0     5.5.5.5         97          0x80000001 0x00C3E3 0
172.16.20.0     5.5.5.5         97          0x80000001 0x005548 0
cnc5#
-----------------------------------------------------------
OSPF database setelah NSSA area dikonfigurasi(cnc1):
-----------------------------------------------------------
cnc1#sh ip ospf database

 OSPF Router with ID (1.1.1.1) (Process ID 1)

 Router Link States (Area 1)

Link ID         ADV Router      Age         Seq#       Checksum Link count
1.1.1.1         1.1.1.1         861         0x80000002 0x00DB50 2
2.2.2.2         2.2.2.2         860         0x80000002 0x001225 1

 Net Link States (Area 1)

Link ID         ADV Router      Age         Seq#       Checksum
192.168.10.1    1.1.1.1         861         0x80000001 0x00DDD7

 Summary Net Link States (Area 1)

Link ID         ADV Router      Age         Seq#       Checksum
2.2.2.2         2.2.2.2         862         0x80000003 0x00F633
3.3.3.3         2.2.2.2         470         0x80000001 0x00D650
4.4.4.4         2.2.2.2         272         0x80000001 0x00B26F
5.5.5.5         2.2.2.2         76          0x80000001 0x008E8E
192.168.20.0    2.2.2.2         862         0x80000003 0x00C4EF
192.168.30.0    2.2.2.2         470         0x80000001 0x006447
192.168.40.0    2.2.2.2         272         0x80000001 0x00FFA0

 Summary ASB Link States (Area 1)

Link ID         ADV Router      Age         Seq#       Checksum
3.3.3.3         2.2.2.2         470         0x80000001 0x00BE68
4.4.4.4         2.2.2.2         93          0x80000001 0x009A87

 Type-5 AS External Link States

Link ID         ADV Router      Age         Seq#       Checksum Tag
172.16.10.0     4.4.4.4         72          0x80000001 0x00763F 0
172.16.20.0     4.4.4.4         72          0x80000001 0x0008A3 0
cnc1#
-----------------------------------------------------------
Sekarang kita akan mencoba agar cnc4 do not send
summary LSA into NSSA (cnc5), caranya :
-----------------------------------------------------------
cnc4#conf t
cnc4(config)#router ospf 1
cnc4(config-router)#area 2 nssa no-summary
cnc4(config-router)#

cnc5#conf t
cnc5(config)#router ospf 1
cnc5(config-router)#area 2 nssa
cnc5(config-router)#
-----------------------------------------------------------
Hasilnya adalah :
-----------------------------------------------------------
cnc5#sh ip route
Codes: 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

Gateway of last resort is 192.168.40.1 to network 0.0.0.0

 5.0.0.0/32 is subnetted, 1 subnets
C       5.5.5.5 is directly connected, Loopback0
C    192.168.40.0/24 is directly connected, FastEthernet0/0
 172.16.0.0/24 is subnetted, 2 subnets
R       172.16.20.0 [120/1] via 172.16.10.2, 00:00:08, FastEthernet1/0
C       172.16.10.0 is directly connected, FastEthernet1/0
O*IA 0.0.0.0/0 [110/2] via 192.168.40.1, 00:00:23, FastEthernet0/0
cnc5#

"------------Sekian dulu, semoga bermanfaat----------------"
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