Router3#show ip interface brief Interface IP-Address OK? Method Status Protocol FastEthernet0/0 unassigned YES unset administratively down down FastEthernet0/1 10.10.255.250 YES manual up up FastEthernet1/0 unassigned YES unset up down FastEthernet1/0.10 10.10.10.1 YES manual up down FastEthernet1/0.20 10.10.12.1 YES manual up down FastEthernet1/0.30 10.10.14.1 YES manual up down FastEthernet1/0.40 10.10.16.1 YES manual up down FastEthernet1/1 unassigned YES unset administratively down down Vlan1 unassigned YES unset administratively down down Router3# Router3#show running-config Building configuration... Current configuration : 1208 bytes ! version 12.4 no service timestamps log datetime msec no service timestamps debug datetime msec no service password-encryption ! hostname Router3 ! ! ! no ip cef no ipv6 cef ! ! ! ! spanning-tree mode pvst ! ! ! interface FastEthernet0/0 no ip address duplex auto speed auto shutdown ! interface FastEthernet0/1 ip address 10.10.255.250 255.255.255.252 duplex auto speed auto ! interface FastEthernet1/0 no ip address duplex auto speed auto ! interface FastEthernet1/0.10 description FacultyVLAN encapsulation dot1Q 10 ip address 10.10.10.1 255.255.254.0 ! interface FastEthernet1/0.20 description AdministrativeVLAN encapsulation dot1Q 20 ip address 10.10.12.1 255.255.254.0 ! interface FastEthernet1/0.30 description InstructionalVLAN encapsulation dot1Q 30 ip address 10.10.14.1 255.255.254.0 ! interface FastEthernet1/0.40 description ServerVLAN encapsulation dot1Q 40 ip address 10.10.16.1 255.255.254.0 ! interface FastEthernet1/1 no ip address duplex auto speed auto shutdown ! interface Vlan1 no ip address shutdown ! ip classless ! ip flow-export version 9 ! ! ! line con 0 ! line aux 0 ! line vty 0 4 login ! ! ! end Router3#