Source Specific Multicast (SSM)

Jika belum tahu type-type multicast routing, silakan klik disini

Pada lab SSM kali ini, kita akan melakukan filtering source paket dengan join group IGMP versi 3.

Berikut topologinya :

Konfigurasi R1 :

ip multicast-routing

interface Loopback0
 ip address 1.1.1.1 255.255.255.255
 ip pim sparse-mode
!
interface Ethernet0/0
 ip address 12.12.12.1 255.255.255.0
 ip pim sparse-mode

router ospf 1
 network 0.0.0.0 255.255.255.255 area 0

ip pim rp-address 1.1.1.1

Konfigurasi R2 :

ip multicast-routing

interface Loopback0
 ip address 2.2.2.2 255.255.255.255
 ip pim sparse-mode
!
interface Ethernet0/0
 ip address 12.12.12.2 255.255.255.0
 ip pim sparse-mode
!
interface Ethernet0/1
 ip address 23.23.23.2 255.255.255.0
 ip pim sparse-mode
 ip igmp join-group 225.0.0.1 source 1.1.1.1
 ip igmp version 3
!
router ospf 1
 network 0.0.0.0 255.255.255.255 area 0

ip pim ssm range 1
!
access-list 1 permit 225.0.0.0 0.0.0.255

Konfigurasi R3 :

ip multicast-routing

interface Loopback0
 ip address 3.3.3.3 255.255.255.255
 ip pim sparse-mode
!
interface Ethernet0/0
 ip address 23.23.23.3 255.255.255.0
 ip pim sparse-mode

router ospf 1
 network 0.0.0.0 255.255.255.255 area 0

ip pim rp-address 1.1.1.1

Verifikasi :

R1#ping 225.0.0.1 source e0/0 repeat 5
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 225.0.0.1, timeout is 2 seconds:
Packet sent with a source address of 12.12.12.1
.....

Paket di atas tdk dapat mencapai alamat 225.0.0.1 karena sourcenya dibatasi hanya dari ip 1.1.1.1 atau loopback 0 R1.

R1#ping 225.0.0.1 source lo0 re      
R1#ping 225.0.0.1 source lo0 repeat 5
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 225.0.0.1, timeout is 2 seconds:
Packet sent with a source address of 1.1.1.1

Reply to request 0 from 23.23.23.2, 2 ms
Reply to request 0 from 23.23.23.2, 2 ms
Reply to request 1 from 23.23.23.2, 1 ms
Reply to request 1 from 23.23.23.2, 1 ms

Paket dapat reply dari 23.23.23.2 yang melakukan join ke group 225.0.0.1