Lab 4. EIGRP – Filtering – Prefix List – Out

 Lab 4. EIGRP – Filtering – Prefix List – Out

Pada lab ini kita menggunakan prefix list out, pada lab sebelumnya kita menggunakan prefix list in. dan lab ini bertujuan agar network R3 dengan prefix /28 sampai /30 di block. Selain prefix itu akan ditampilkan pada table routing, dan lab ini kita menggunakan topologi sebelumnya, jadi kita harus menghapus konfigurasi prefix list in sebelumnya.

 

-R2

Router(config)#router eigrp 10

Router(config-router)#no distribute-list prefix EIGRP_IN in

Dan pastikan semua network muncul pada routing table.

-R2

Router(config)#do show ip route

3.0.0.0/8 is variably subnetted, 6 subnets, 5 masks

D        3.3.3.3/32 [90/409600] via 23.23.23.2, 00:05:56, Ethernet0/1

D        3.3.3.16/28 [90/409600] via 23.23.23.2, 00:05:15, Ethernet0/1

D        3.3.3.32/29 [90/409600] via 23.23.23.2, 00:04:18, Ethernet0/1

D        3.3.3.96/27 [90/409600] via 23.23.23.2, 00:03:36, Ethernet0/1

D        3.3.3.148/30 [90/409600] via 23.23.23.2, 00:03:11, Ethernet0/1

D        3.3.3.192/28 [90/409600] via 23.23.23.2, 00:02:47, Ethernet0/1

      12.0.0.0/8 is variably subnetted, 2 subnets, 2 masks

C        12.12.12.0/24 is directly connected, Ethernet0/0

L        12.12.12.2/32 is directly connected, Ethernet0/0

 

Selanjutnya kita akan melakukan konfigurasi prefix list filtering out pada R3.

 

 

-R3

Router(config)#ip prefix-list EIGRP_OUT seq 10 deny 3.3.3.0/24 ge 28 le 30

Router(config)#ip prefix-list EIGRP_OUT seq 20 permit 0.0.0.0/0 le 32

Router(config)#router eigrp 10

Router(config-router)#distribute-list prefix EIGRP_OUT out

Setelah itu pastikan network 3.3.3.X dengan prefix 28 sampai prefix 30 diblock dan tidak ada pada table routing R1 dan R2.

-R1

Router(config)#do show ip route

      3.0.0.0/8 is variably subnetted, 2 subnets, 2 masks

D        3.3.3.3/32 [90/435200] via 12.12.12.2, 00:18:18, Ethernet0/0

D        3.3.3.96/27 [90/435200] via 12.12.12.2, 00:15:58, Ethernet0/0

      12.0.0.0/8 is variably subnetted, 2 subnets, 2 masks

C        12.12.12.0/24 is directly connected, Ethernet0/0

L        12.12.12.1/32 is directly connected, Ethernet0/0

      23.0.0.0/24 is subnetted, 1 subnets

D        23.23.23.0 [90/307200] via 12.12.12.2, 00:20:46, Ethernet0/0

-R2

Router(config)#do show ip route

3.0.0.0/8 is variably subnetted, 2 subnets, 2 masks

D        3.3.3.3/32 [90/409600] via 23.23.23.2, 00:18:40, Ethernet0/1

D        3.3.3.96/27 [90/409600] via 23.23.23.2, 00:16:20, Ethernet0/1

      12.0.0.0/8 is variably subnetted, 2 subnets, 2 masks

C        12.12.12.0/24 is directly connected, Ethernet0/0

L        12.12.12.2/32 is directly connected, Ethernet0/0

      23.0.0.0/8 is variably subnetted, 2 subnets, 2 masks

C        23.23.23.0/24 is directly connected, Ethernet0/1

L        23.23.23.1/32 is directly connected, Ethernet0/1