Inter-VLAN Routing Configuration
by Jim Johnston
R1
R1#sh run
Building configuration...
Current configuration : 909 bytes
!
version 12.4
service password-encryption
!
hostname R1
!
!
enable secret 5 $1$mERr$9cTjUIEqNGurQiFU.ZeCi1
!
!
!
!
ip ssh version 1
!
!
interface FastEthernet0/0
description WEB/TFTP Server Link
ip address 172.17.50.1 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet0/1
no ip address
duplex auto
speed auto
!
interface FastEthernet0/1.10
encapsulation dot1Q 10
ip address 172.17.10.1 255.255.255.0
!
interface FastEthernet0/1.20
encapsulation dot1Q 20
ip address 172.17.20.1 255.255.255.0
!
interface FastEthernet0/1.30
encapsulation dot1Q 30
ip address 172.17.30.1 255.255.255.0
!
interface FastEthernet0/1.99
encapsulation dot1Q 99 native
ip address 172.17.99.1 255.255.255.0
!
interface Vlan1
no ip address
shutdown
!
ip classless
!
!
!
!
!
banner motd ^CAuthorized Access Only^C
line con 0
password 7 0822455D0A16
login
line vty 0 4
password 7 0822455D0A16
login
!
!
end
S1
S1#sh run
Building configuration...
Current configuration : 1460 bytes
!
version 12.1
service password-encryption
!
hostname S1
!
enable secret 5 $1$mERr$9cTjUIEqNGurQiFU.ZeCi1
!
no ip domain-lookup
!
spanning-tree vlan 10,20,30,99 priority 4096
!
interface FastEthernet0/1
switchport trunk native vlan 99
switchport mode trunk
!
interface FastEthernet0/2
switchport trunk native vlan 99
switchport mode trunk
!
interface FastEthernet0/3
switchport trunk native vlan 99
switchport mode trunk
!
interface FastEthernet0/4
switchport trunk native vlan 99
switchport mode trunk
!
interface FastEthernet0/5
switchport trunk native vlan 99
switchport mode trunk
!
<Disabled interfaces are not shown>
!
interface Vlan1
no ip address
shutdown
!
interface Vlan99
ip address 172.17.99.31 255.255.255.0
!
ip default-gateway 172.17.99.1
!
banner motd ^CAuthorized Access Only^C
line con 0
password 7 0822455D0A16
login
!
line vty 0 4
password 7 0822455D0A16
login
line vty 5 15
password 7 0822455D0A16
login
!
!
end
S2
S2#sh run
Building configuration...
Current configuration : 1512 bytes
!
version 12.1
service password-encryption
!
hostname S2
!
enable secret 5 $1$mERr$9cTjUIEqNGurQiFU.ZeCi1
!
no ip domain-lookup
!
!
interface FastEthernet0/1
switchport trunk native vlan 99
switchport mode trunk
!
interface FastEthernet0/2
switchport trunk native vlan 99
switchport mode trunk
!
interface FastEthernet0/3
switchport trunk native vlan 99
switchport mode trunk
!
interface FastEthernet0/4
switchport trunk native vlan 99
switchport mode trunk
!
interface FastEthernet0/5
!
interface FastEthernet0/6
switchport access vlan 30
switchport mode access
!
<Disabled interfaces are not shown>
!
interface FastEthernet0/11
switchport access vlan 10
switchport mode access
!
<Disabled interfaces are not shown>
!
interface FastEthernet0/18
switchport access vlan 20
switchport mode access
!
<Disabled interfaces are not shown>
!
interface Vlan1
no ip address
shutdown
!
interface Vlan99
ip address 172.17.99.32 255.255.255.0
!
ip default-gateway 172.17.99.1
!
banner motd ^CAuthorized Access Only^C
line con 0
password 7 0822455D0A16
login
!
line vty 0 4
password 7 0822455D0A16
login
line vty 5 15
password 7 0822455D0A16
login
!
!
end
S3
S3#sh run
Building configuration...
Current configuration : 1410 bytes
!
version 12.1
service password-encryption
!
hostname S3
!
enable secret 5 $1$mERr$9cTjUIEqNGurQiFU.ZeCi1
!
no ip domain-lookup
!
!
interface FastEthernet0/1
switchport trunk native vlan 99
switchport mode trunk
!
interface FastEthernet0/2
switchport trunk native vlan 99
switchport mode trunk
!
interface FastEthernet0/3
switchport trunk native vlan 99
switchport mode trunk
!
interface FastEthernet0/4
switchport trunk native vlan 99
switchport mode trunk
!
<Disabled interfaces are not shown>
!
interface FastEthernet0/11
switchport access vlan 99
switchport mode access
!
<Disabled interfaces are not shown>
!
interface Vlan1
no ip address
shutdown
!
interface Vlan99
ip address 172.17.99.33 255.255.255.0
!
ip default-gateway 172.17.99.1
!
banner motd ^CAuthorized Access Only^C
line con 0
password 7 0822455D0A16
login
!
line vty 0 4
password 7 0822455D0A16
login
line vty 5 15
password 7 0822455D0A16
login
!
!
end