Cisco | OSPF - NSSA

Sebelumnya saya telah membahas tentang Stub Area dan Totally Stuba Area. Kedua type area ini tidak mengijinkan adanya ASBR. Kelebihan NSSA area adalah mengijinkan adanya ASBR terhubung dengan area ini. Area NSS sama denganarea Stub dan Totally Stub Area sama-sama menolak LSA type 4 dan 5, kemudian menggantonya LSA Type 7.

Konfigurasi R8

hostname R8

interface Loopback1
ip address 172.16.1.1 255.255.255.0
!
interface Loopback2
ip address 172.16.2.1 255.255.255.0
!
interface Loopback3
ip address 172.16.3.1 255.255.255.0
!
interface Loopback4
ip address 172.16.4.1 255.255.255.0
!
interface FastEthernet0/0
ip address 12.12.12.8 255.255.255.0
ip ospf 1 area 0

interface FastEthernet0/1
ip address 172.16.0.1 255.255.255.0
ip ospf 1 area 1

router ospf 1
router-id 8.8.8.8
area 1 nssa default-information-originate
redistribute rip subnets metric-type 1
network 172.16.1.0 0.0.0.255 area 1
network 172.16.2.0 0.0.0.255 area 1
network 172.16.3.0 0.0.0.255 area 1
network 172.16.4.0 0.0.0.255 area 1
!
R8#

Konfigurasi R2

hostname R2

interface Loopback1

ip address 2.2.2.2 255.255.255.255

ip ospf 1 area 1

interface Loopback2

ip address 22.22.22.22 255.255.255.255

ip ospf 1 area 1

interface FastEthernet0/0

ip address 20.20.20.1 255.255.255.0

ip ospf 1 area 1

interface FastEthernet0/1