Configure Inter-VLAN routing on a Cisco L3 Catalyst Switch

I recently had to configure Inter-VLAN routing at a client’s site. I don’t have to perform this task on a regular basis, so I figured I would make a post of a sample implementation for future reference.

Ingredients used for this post:

Cisco 2811 Router
Cisco Catalyst 3560
Cisco Catalyst 2950

Steps

Configure the Corp router.

enable
conf t
int fa 0/1
 description Link_to_L3SW
 ip address 172.17.17.9 255.255.255.252
 no shut
 end
copy run start

Configure the Cisco Catalyst 3560 switch.

enable
conf t
vtp mode server
vtp domain test
vtp password test
vlan 10
 name Marketing
 exit
vlan 20
 name IT
 exit
int gi 0/1
 switchport trunk encapsulation dot1q
 switchport mode trunk
 switchport nonegotiate
 exit
ip routing
int vlan 1
 ip address 10.100.1.1 255.255.255.0
 no shut
 exit
int vlan 10
 ip address 10.100.10.1 255.255.255.0
 no shut
 exit
int vlan 20
 ip address 10.100.20.1 255.255.255.0
 no shut
 exit
int fa 0/24
 no switchport
 ip address 172.17.17.10 255.255.255.252
 no shut
 exit
ip route 0 0 172.17.17.9
end
copy run start

Configure the Cisco Catalyst 2950 switch.

enable
conf t
vtp mode client
vtp domain test
vtp password test
int fa 0/1 - 4
 switchport mode access
 switchport access vlan 10
 exit
int fa 0/5 - 8
 switchport mode access
 switchport access vlan 20
 exit
int gi 0/1
 switchport trunk encapsulation dot1q
 switchport mode trunk
 switchport mode nonegotiate
 exit
int vlan 1
 ip address 10.100.1.2 255.255.255.0
 no shut
 exit
ip default-gateway 10.100.1.1
end
copy run start

Steps#

Steps