Konfigurasi Dasar Cisco Router Tahap 3- OSPF

Single Area OSPF

Konfigurasi Router OSPF

Loopback 0 – JKT: 10.100.100.1/32

Loopback 0 – SBY: 10.100.100.2/32

Loopback 0 – MDN: 10.100.100.3/32

Task 1: Konfigurasi OSPF

Router-JKT:

(config)# int loopback 0

(config-if)# description *** as Router-ID for OSPF ***

(config-if)# ip address 10.100.100.1 255.255.255.255

(config-if)# router ospf 1

(config-router)# network 10.1.2.1 0.0.0.0 area 0

(config-router)# network 10.1.3.1 0.0.0.0 area 0

(config-router)# network 10.1.4.1 0.0.0.0 area 0

(config-router)# network 10.100.100.1 0.0.0.0 area 0

(config-router)# passive-interface f0/0

(config-router)# end

Router-MDN:

(config)# int loopback 0

(config-if)# description *** as Router-ID for OSPF ***

(config-if)# ip address 10.100.100.3 255.255.255.255

(config-if)# router ospf 1

(config-router)# network 10.1.4.2 0.0.0.0 area 0

(config-router)# network 10.1.5.1 0.0.0.0 area 0

(config-router)# network 10.100.100.3  0.0.0.0 area 0

(config-router)# passive-interface f0/0

(config-router)# end

Router-SBY:

(config)# int loopback 0

(config-if)# description *** as Router-ID for OSPF ***

(config-if)# ip address 10.100.100.2 255.255.255.255

(config-if)# router ospf 1

(config-router)# network 10.1.2.2 0.0.0.0 area 0

(config-router)# network 10.1.1.1 0.0.0.0 area 0

(config-router)# network 10.100.100.2  0.0.0.0 area 0

(config-router)# passive-interface f0/0

(config-router)# end

Verify:

# sh ip ospf

# sh ip ospf interface

# sh ip ospf neighbor  --> melihat neighbor table

# sh ip ospf database  --> melihat topology table

# sh ip route     --> melihat routing table

# sh ip protocols     --> melihat semua routing protocol di router

#debug ip ospf  events

#debug ip ospf packet

#terminal monitor

#undebug all

Task 2: OSPF simple authentication (plain-text)

Router-SBY:

(config)# int s0/1    --> interface yg terhubung ke Router-JKT

(config-if)# ip ospf authentication

(config-if)# ip ospf authentication-key ccna1

Router-MDN:

(config)# int s0/1     --> interface yg terhubung ke Router-JKT

(config-if)# ip ospf authentication

(config-if)# ip ospf authentication-key ccna2

Router-JKT:

(config)# int s0/1

(config-if)# ip ospf authentication

(config-if)# ip ospf authentication-key ccna1 --> password dengan router-sby

(config)# int s0/0

(config-if)# ip ospf authentication

(config-if)# ip ospf authentication-key ccna2   --> password dengan router-mdn

# sh ip ospf neighbor

# debug ip ospf adj

Hapus OSPF simple authentication:

Router-SBY:

(config)# int s0/1             

(config-if)# no ip ospf authentication

(config-if)# no ip ospf authentication-key

Router-MDN:

(config)# int s0/1

(config-if)# no ip ospf authentication

(config-if)# no ip ospf authentication-key

Router-JKT:

(config)# int s0/1

(config-if)# no ip ospf authentication

(config-if)# no ip ospf authentication-key

(config)# int s0/0

(config-if)# no ip ospf authentication

(config-if)# no ip ospf authentication-key

Task 3: OSPF MD5 authentication (MD5 hashed)

Router-SBY:

(config)# int s0/1    --> interface yg terhubung ke Router-JKT

(config-if)# ip ospf authentication message-digest

(config-if)# ip ospf message-digest-key 1 md5 ccna1

Router-MDN:

(config)# int s0/1    --> interface yg terhubung ke Router-JKT

(config-if)# ip ospf authentication message-digest

(config-if)# ip ospf message-digest-key 1 md5 ccna2

Router-JKT:

(config)# int f0/1

(config-if)# ip ospf authentication message-digest

(config-if)# ip ospf message-digest-key 1 md5 ccna1 --> password dengan router-sby

(config)# int s0/1

(config-if)# ip ospf authentication message-digest

(config-if)# ip ospf message-digest-key 1 md5 ccna2--> password dengan router-mdn

# debug ip ospf adj

Hapus OSPF MD5 authentication:

Router-SBY:

(config)# int s0/1    --> interface yg terhubung ke Router-JKT

(config-if)# no ip ospf authentication message-digest

(config-if)# no ip ospf message-digest-key 1 md5 ccna1

Router-MDN:

(config)# int s0/1  --> interface yg terhubung ke Router-JKT

(config-if)# no ip ospf authentication message-digest

(config-if)# no ip ospf message-digest-key 1 md5 ccna2

Router-JKT:

(config)# int s0/1

(config-if)# no ip ospf authentication

(config-if)# no ip ospf message-digest-key 1 md5 ccna1

(config-if)# int s0/0

(config-if)# no ip ospf authentication

(config-if)# no ip ospf message-digest-key 1 md5 ccna2

Task 4: menghapus proses routing OSPF

(config)# no int loopback 0

(config)# no router ospf 1


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