>> > A configuration fragment:
>> >
>> > int FastEthernet0/0
>> > descriptuon my first network
>> > ip address 192.168.1.1 255.255.255.0
>> > !
>> > int FastEthernet0/1
>> > descriptuon my second network
>> > ip address 192.168.2.1 255.255.255.0
>> > !
>> > vlan 3 name mythirdnetwork
>> > int Vlan3
>> > descriptuon my third network
>> > ip address 192.168.3.1 255.255.255.0
>> > !
>> > int FastEthernet0/0/0
>> > switchport mode access
>> > switchport access vlan 3
>> > !
>> >
>> > int FastEthernet0/0
>> > descriptuon my first network
>> > ip address 192.168.1.1 255.255.255.0
>> > !
>> > int FastEthernet0/1
>> > descriptuon my second network
>> > ip address 192.168.2.1 255.255.255.0
>> > !
>> > vlan 3 name mythirdnetwork
>> > int Vlan3
>> > descriptuon my third network
>> > ip address 192.168.3.1 255.255.255.0
>> > !
>> > int FastEthernet0/0/0
>> > switchport mode access
>> > switchport access vlan 3
>> > !