table de routage de notre machine:
root@squeeze:/# ip route
192.168.100.20/30 via 192.168.4.1 dev eth1  proto zebra  metric 791
192.168.14.0/25 dev eth1.100  proto kernel  scope link  src 192.168.14.2
192.168.4.0/25 dev eth1  proto kernel  scope link  src 192.168.4.2
192.168.130.0/24 dev eth0  proto kernel  scope link  src 192.168.130.30
default via 192.168.130.254 dev eth0

config du routeur:

sh ru
Building configuration...

Current configuration : 1221 bytes
!
version 12.2
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname rome
!
enable secret 5 $1$uIGO$C6jr65TQZJGO8DwE.rE73.
!
ip subnet-zero
no ip domain-lookup
!
frame-relay switching
!
!
!
interface Loopback1
 ip address 192.168.254.4 255.255.255.255
!
interface FastEthernet0
 ip address 192.168.4.1 255.255.255.128
 speed auto
!
interface Serial0
 no ip address
 shutdown
 no fair-queue
!
interface Serial1
 no ip address
 encapsulation frame-relay IETF
 frame-relay lmi-type ansi
!
interface Serial1.104 point-to-point
 ip address 192.168.100.10 255.255.255.252
 frame-relay interface-dlci 104
!
interface Serial1.204 point-to-point
 ip address 192.168.100.18 255.255.255.252
 shutdown
 frame-relay interface-dlci 204
!
interface Serial1.304 point-to-point
 ip address 192.168.100.22 255.255.255.252
 frame-relay interface-dlci 304
!
router ospf 100
 log-adjacency-changes
 network 192.168.4.0 0.0.0.127 area 0.0.0.4
 network 192.168.100.0 0.0.0.3 area 0
 network 192.168.100.8 0.0.0.3 area 0
 network 192.168.100.20 0.0.0.3 area 0
!
ip classless
no ip http server
!
!
!
line con 0
liline con 0
line aux 0
line vty 0 4
 password cisco
 login
!