Hi all,
I have a Cisco 1841 with HWIC-4ESW card on slot 0.
I have 4 subnets, one being the ISP's connection. The HWIC-4ESW are not L3 ports and therefore difficult to assign IP addresses directly on them. The idea of VLANs come in. I managed to come up with configurations as below but am stuck with enabling the routing between the subnets. Grateful for your advice.
Router>en
Router#config t
!On-board interface
Router(config)#int fa0/0
Router(config-if)#description ***INTERNET***
Router(config-if)#ip address xxx.xxx.xxx.xxx 255.255.255.252
Router(config-if)#no shut
Router(config-if)#ip nat outside
Router(config-if)#exit
!On-board interface
Router(config)#int fa0/1
Router(config-if)#description ***LAN***
Router(config-if)#ip address 10.0.xxx.xxx 255.255.255.0
Router(config-if)#no shut
Router(config-if)#ip nat inside
Router(config-if)#exit
Router#vlan database
% Warning: It is recommended to configure VLAN from config mode,
as VLAN database mode is being deprecated. Please consult user
documentation for configuring VTP/VLAN in config mode.
Router(vlan)#vlan 10
VLAN 10 modified:
Router(vlan)#vlan 20
VLAN 20 added:
Name: VLAN0020
Router(vlan)#exit
APPLY completed.
Exiting....
Router#config t
Router(config)#int vlan 10
Router(config-if)#ip address 172.16.xxx.xxx 255.255.255.0
Router(config-if)#ip nat inside
Router(config-if)#no shut
Router(config-if)#exit
Router(config)#int vlan 20
Router(config-if)#ip address 192.168.xxx.xxx 255.255.255.0
Router(config-if)#ip nat inside
Router(config-if)#no shut
Router(config-if)#exit
!HwIC-4ESW interface
Router(config)#int fa0/0/0
Router(config-if)#switchport mode access
Router(config-if)#switchport access vlan 10
Router(config-if)#exit
!HWIC-4ESW Interface
Router(config)#int fa0/0/1
Router(config-if)#switchport mode access
Router(config-if)#switchport access vlan 20
Router(config-if)#exit
Router(config)#exit
Router#copy run start
Destination filename [startup-config]?
Building configuration...
[OK]
Router#config t
Router(config)#ip name-server xxx.xxx.xxx.xxx
Router(config)#ip name-server xxx.xxx.xxx.xxx
Router(config)#exit
Thanks