Rezky Stuff

Berdasarkan definisi, GRE (Generic Routing Encapsulation) digunakan untuk enkapsulasi IP/non-IP menjadi IPv4/IPv6. Dalam simulasi kali ini, saya mencoba untuk membuat Tunneling GRE IPv6 over IPv4, yang berarti core network ialah IPv6 dan user network ialah IPv4.

Ilustrasi GRE tunneling IPv6

 Topologi yang akan saya gunakan sepert ini :

Topologi GRE Tunneling IPv6 over IPv4

Yang dibutuhkan untuk implementasi:

1. 1 buah Komputer/Laptop
2. Software GNS3, dapat didownload disini
3. IOS cisco c3725-adventerprisek9-mz.124-18.bin, dapat didownload disini
4. Virtual PC, dapat didownload disini 

Konfigurasi R1 :
!
hostname R1
!
ipv6 unicast-routing
ipv6 cef
!
interface Loopback0
 ip address 10.10.10.1 255.255.255.255
 ipv6 address FEC0::2:1/112
 ipv6 ospf 2 area 0
!
interface Tunnel1
 ip address 192.168.3.1 255.255.255.252
 tunnel source FastEthernet0/0
 tunnel destination FEC0::4:1
 tunnel mode gre ipv6
!
interface FastEthernet0/0
 no ip address
 speed auto
 full-duplex
 ipv6 address FEC0::1:1/112
 ipv6 ospf 2 area 0
!
interface FastEthernet0/1
 ip address 192.168.1.1 255.255.255.0
 speed auto
 full-duplex
!
router ospf 1
 log-adjacency-changes
 network 10.10.10.1 0.0.0.0 area 0
 network 192.168.1.0 0.0.0.255 area 0
 network 192.168.3.0 0.0.0.3 area 0
!
ipv6 router ospf 2
 log-adjacency-changes
!
line con 0
 exec-timeout 0 0
 logging synchronous
 stopbits 1
line aux 0
 stopbits 1
line vty 0 4
 login
!
scheduler allocate 20000 1000
!
end

Konfigurasi R2:
!
hostname R2
!
ipv6 unicast-routing
!
interface Loopback0
 ip address 10.10.10.2 255.255.255.255
!
interface FastEthernet0/0
 no ip address
 speed auto
 full-duplex
 ipv6 address FEC0::1:2/112
 ipv6 ospf 2 area 0
!
interface FastEthernet0/1
 no ip address
 speed auto
 full-duplex
 ipv6 address FEC0::4:2/112
 ipv6 ospf 2 area 0
!
router ospf 1
 log-adjacency-changes
 network 10.10.10.2 0.0.0.0 area 0
 network 192.168.1.0 0.0.0.255 area 0
 network 192.168.2.0 0.0.0.255 area 0
!
ipv6 router ospf 2
 log-adjacency-changes
!
line con 0
 exec-timeout 0 0
 logging synchronous
 stopbits 1
line aux 0
 stopbits 1
line vty 0 4
 login
!
end


Konfigurasi R3:
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R3
!
ipv6 unicast-routing
ipv6 cef
!
interface Loopback0
 ip address 10.10.10.3 255.255.255.255
 ipv6 address FEC0::3:1/112
 ipv6 ospf 2 area 0
!
interface Tunnel1
 ip address 192.168.3.2 255.255.255.252
 tunnel source FastEthernet0/0
 tunnel destination FEC0::1:1
 tunnel mode gre ipv6
!
interface FastEthernet0/0
 no ip address
 speed auto
 full-duplex
 ipv6 address FEC0::4:1/112
 ipv6 ospf 2 area 0
!
interface FastEthernet0/1
 ip address 192.168.2.1 255.255.255.0
 speed auto
 full-duplex
!
router ospf 1
 log-adjacency-changes
 network 10.10.10.3 0.0.0.0 area 0
 network 192.168.2.0 0.0.0.255 area 0
 network 192.168.3.0 0.0.0.3 area 0
!
ipv6 router ospf 2
 log-adjacency-changes
!
!
line con 0
 exec-timeout 0 0
 logging synchronous
 stopbits 1
line aux 0
 stopbits 1
line vty 0 4
 login
!
scheduler allocate 20000 1000
!
end

Hasil Implementasi :

Capture Packet Wireshark

Ping  PC2->PC1

Debug Tunnel R1

Ping PC1->PC2