OSPF Virtual Link Over Frame Relay

Posted: September 20, 2011 in CCNA, Frame Relay, Networking, OSPF

Sore Bro n Sis,

Alhamdulillah, running well jg simulasi “OSPF Virtual Link”
langsung aja ya. Berikut network diagram dan konfigurasinya

Design By Wiwid

R2 :
interface Loopback0
ip address 172.16.1.2 255.255.255.255

interface Serial0/0
no ip address
encapsulation frame-relay
clock rate 2000000
frame-relay lmi-type ansi
!
interface Serial0/0.101 point-to-point
ip address 192.168.1.1 255.255.255.248
snmp trap link-status
frame-relay interface-dlci 101
!
interface Serial0/0.102 point-to-point
ip address 192.168.2.1 255.255.255.248
snmp trap link-status
frame-relay interface-dlci 102
!
interface Serial0/0.103 point-to-point
ip address 192.168.3.1 255.255.255.248
snmp trap link-status
frame-relay interface-dlci 103
!
interface FastEthernet0/1
description to R7 (F0/1)
ip address 10.10.7.1 255.255.255.252

router ospf 99
router-id 172.16.1.2
log-adjacency-changes
area 20 virtual-link 172.16.1.7
network 10.10.7.0 0.0.0.3 area 20
network 172.16.1.0 0.0.0.255 area 0
network 192.168.1.0 0.0.0.7 area 0
network 192.168.2.0 0.0.0.7 area 0
network 192.168.3.0 0.0.0.7 area 0

R3 :
interface Loopback0
ip address 172.16.1.3 255.255.255.255

interface Serial0/0
no ip address
encapsulation frame-relay
clock rate 2000000
frame-relay lmi-type ansi
!
interface Serial0/0.101 point-to-point
ip address 192.168.1.2 255.255.255.248
snmp trap link-status
frame-relay interface-dlci 101
!
router ospf 99
router-id 172.16.1.3
log-adjacency-changes
network 172.16.1.0 0.0.0.255 area 0
network 192.168.1.0 0.0.0.7 area 0

R4 :
interface Loopback0
ip address 172.16.1.4 255.255.255.255
!
interface Serial0/0
no ip address
encapsulation frame-relay
clock rate 2000000
frame-relay lmi-type ansi
!
interface Serial0/0.102 point-to-point
ip address 192.168.2.2 255.255.255.248
snmp trap link-status
frame-relay interface-dlci 102
!
router ospf 99
router-id 172.16.1.4
log-adjacency-changes
network 172.16.1.0 0.0.0.255 area 0
network 192.168.2.0 0.0.0.255 area 0

R5 :
interface Loopback0
ip address 172.16.1.5 255.255.255.255
!
interface Serial0/0
no ip address
encapsulation frame-relay
clock rate 2000000
frame-relay lmi-type ansi
!
interface Serial0/0.103 point-to-point
ip address 192.168.3.2 255.255.255.248
snmp trap link-status
frame-relay interface-dlci 103
!
router ospf 99
router-id 172.16.1.5
log-adjacency-changes
network 172.16.1.0 0.0.0.255 area 0
network 192.168.3.0 0.0.0.7 area 0

R5 :

interface Loopback0
ip address 172.16.1.5 255.255.255.255
!
interface Serial0/0
no ip address
encapsulation frame-relay
clock rate 2000000
frame-relay lmi-type ansi
!
interface Serial0/0.103 point-to-point
ip address 192.168.3.2 255.255.255.248
snmp trap link-status
frame-relay interface-dlci 103
!
router ospf 99
router-id 172.16.1.5
log-adjacency-changes
network 172.16.1.0 0.0.0.255 area 0
network 192.168.3.0 0.0.0.7 area 0

R7 :
interface Loopback0
ip address 172.16.1.7 255.255.255.255
!
interface FastEthernet0/0
description To R8 (F0/0)
ip address 10.10.150.1 255.255.255.252
!
interface FastEthernet0/1
description To R2 (F0/1)
ip address 10.10.7.2 255.255.255.252

router ospf 99
router-id 172.16.1.7
log-adjacency-changes
area 20 virtual-link 172.16.1.2
network 10.10.7.0 0.0.0.3 area 20
network 10.10.150.0 0.0.0.3 area 30
network 172.16.1.0 0.0.0.255 area 20

R8 :
interface Loopback0
ip address 172.16.1.8 255.255.255.255
!
interface FastEthernet0/0
description To R7 (F0/0)
ip address 10.10.150.2 255.255.255.252

router ospf 99
router-id 172.16.1.8
log-adjacency-changes
network 10.10.150.0 0.0.0.3 area 30
network 172.16.1.0 0.0.0.255 area 30

NOTE :
Verifikasi apakah virtual-link dengan baik. Cek “show ip route di R8”, karena R8 tidak terhubung langsung dengan AREA 0. Jika di R8, terdapat routing-table dari “inter-area (IA)” maka virtual-link sudah UP.

R8#sh ip ro ospf
172.16.0.0/32 is subnetted, 5 subnets
O IA 172.16.1.5 [110/85] via 10.10.150.1, 00:16:01, FastEthernet0/0
O IA 172.16.1.4 [110/85] via 10.10.150.1, 00:16:01, FastEthernet0/0
O IA 172.16.1.7 [110/11] via 10.10.150.1, 00:16:11, FastEthernet0/0
O IA 172.16.1.3 [110/85] via 10.10.150.1, 00:16:01, FastEthernet0/0
10.0.0.0/30 is subnetted, 2 subnets
O IA 10.10.7.0 [110/20] via 10.10.150.1, 00:16:11, FastEthernet0/0
192.168.1.0/29 is subnetted, 1 subnets
O IA 192.168.1.0 [110/84] via 10.10.150.1, 00:16:01, FastEthernet0/0
192.168.2.0/29 is subnetted, 1 subnets
O IA 192.168.2.0 [110/84] via 10.10.150.1, 00:16:01, FastEthernet0/0
192.168.3.0/29 is subnetted, 1 subnets
O IA 192.168.3.0 [110/84] via 10.10.150.1, 00:16:01, FastEthernet0/0

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