- Mempelajari solusi terhadap are lain yang tidak terhubung langsung ke area 0, dimana dalam percobaan ini yang di gunakan adalah virtual link
- Konfigurasi OSPF seperti topologi di atas
- Area 2 dan Area 3 tidak terhubung ke Area 0
- Gunakan virtual link 1 untuk menghubungkan Area 2 ke Area 0
- Gunakan virtual link 2 untuk menghubungkan Area 3 ke Area 0
- Pastikan semua IP loopback yang berada pada area OSPF yang berbeda bisaling di ping oleh semua router
- virtual link
- GRE Tunnel
KONFIGURASI :
R1(config)#int lo0
R1(config-if)#
*Mar 1 00:00:53.051: %LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback0, changed state to up
R1(config-if)#ip add 1.1.1.1 255.255.255.255
R1(config-if)#no shut
R1(config-if)#int fa0/0
R1(config-if)#ip add 12.12.12.1 255.255.255.0
R1(config-if)#no shut
R1(config-if)#
*Mar 1 00:01:42.639: %LINK-3-UPDOWN: Interface FastEthernet0/0, changed state to up
*Mar 1 00:01:43.639: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
R1(config-if)#router ospf 1
R1(config-router)#router-id 1.1.1.1
R1(config-router)#net 1.1.1.1 0.0.0.0 area 0
R1(config-router)#net 12.12.12.1 0.0.0.0 area 1
R1(config-router)#
*Mar 1 00:06:34.463: %OSPF-5-ADJCHG: Process 1, Nbr 2.2.2.2 on FastEthernet0/0 from LOADING to FULL, Loading Done
R1(config-router)#do 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 2.2.2.2 [110/11] via 12.12.12.2, 00:07:19, FastEthernet0/0
12.0.0.0/24 is subnetted, 1 subnets
C 12.12.12.0 is directly connected, FastEthernet0/0
R1(config-router)#do sh ip ospf data
% Ambiguous command: "do sh ip ospf data"
R1(config-router)#do sh ip ospf database
OSPF Router with ID (1.1.1.1) (Process ID 1)
Router Link States (Area 0)
Link ID ADV Router Age Seq# Checksum Link count
1.1.1.1 1.1.1.1 685 0x80000002 0x00D152 1
Summary Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
2.2.2.2 1.1.1.1 460 0x80000001 0x007DA8
12.12.12.0 1.1.1.1 681 0x80000001 0x001EEC
Router Link States (Area 1)
Link ID ADV Router Age Seq# Checksum Link count
1.1.1.1 1.1.1.1 464 0x80000002 0x002EA7 1
2.2.2.2 2.2.2.2 464 0x80000003 0x001D96 2
Net Link States (Area 1)
Link ID ADV Router Age Seq# Checksum
12.12.12.1 1.1.1.1 464 0x80000001 0x004CB8
Summary Net Link States (Area 1)
Link ID ADV Router Age Seq# Checksum
1.1.1.1 1.1.1.1 695 0x80000001 0x0047EC
R1(config-router)#do sh ip ospf database
OSPF Router with ID (1.1.1.1) (Process ID 1)
Router Link States (Area 0)
Link ID ADV Router Age Seq# Checksum Link count
1.1.1.1 1.1.1.1 745 0x80000002 0x00D152 1
Summary Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
2.2.2.2 1.1.1.1 519 0x80000001 0x007DA8
12.12.12.0 1.1.1.1 740 0x80000001 0x001EEC
Router Link States (Area 1)
Link ID ADV Router Age Seq# Checksum Link count
1.1.1.1 1.1.1.1 524 0x80000002 0x002EA7 1
2.2.2.2 2.2.2.2 524 0x80000003 0x001D96 2
Net Link States (Area 1)
Link ID ADV Router Age Seq# Checksum
12.12.12.1 1.1.1.1 524 0x80000001 0x004CB8
Summary Net Link States (Area 1)
Link ID ADV Router Age Seq# Checksum
1.1.1.1 1.1.1.1 750 0x80000001 0x0047EC
R1(config-router)#
*Mar 1 00:16:36.299: %OSPF-4-ERRRCV: Received invalid packet: mismatch area ID, from backbone area must be virtual-link but not found from 12.12.12.2, FastEthernet0/0
R1(config-router)#do sh ip ospf virtual-link
Virtual Link OSPF_VL0 to router 2.2.2.2 is up
Run as demand circuit
DoNotAge LSA allowed.
Transit area 1, via interface FastEthernet0/0, Cost of using 10
Transmit Delay is 1 sec, State POINT_TO_POINT,
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
Hello due in 00:00:07
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
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