CISCO Router Commands

IP Settings

enable
configure terminal
!
interface fa0/0
ip address 192.168.1.200 255.255.255.0
no shutdown
exit
!
interface fa1/0
ip address 172.16.1.254 255.255.255.0
no shutdown
exit

Multiple VLAN/IP

enable
configure terminal
!
interface FastEthernet 0/0
no shutdown
!
interface FastEthernet 0/0.10
encapsulation dot1Q 10
ip address 192.168.1.254 255.255.255.0
!
interface FastEthernet 0/0.20
encapsulation dot1Q 20
ip address 192.168.2.254 255.255.255.0
!
interface FastEthernet 0/0.30
encapsulation dot1Q 30
ip address 192.168.3.254 255.255.255.0
!
exit

Loopback

enable
configure terminal
!
interface loopback 1
ip address 172.16.0.254 255.255.255.252
exit

Show

enable
!
show ip interface brief
!
show interfaces
show interfaces FastEthernet 0/0
show interfaces Port-channel 1

DHCP

enable
configure terminal
!
ip dhcp pool Sales
network 192.168.10.0 255.255.255.0
default-router 192.168.10.1
dns-server 8.8.8.8
lease h m s
exit
ip dhcp pool Admin
network 192.168.20.0 255.255.255.0
default-router 192.168.20.1
exit

Show

enable
!
show ip dhcp binding
show ip dhcp conflict
show ip dhcp relay
!
show dhcp lease

Routes

Default

enable
configure terminal
!
ip route 0.0.0.0 0.0.0.0 FastEthernet 0/0

Static

enable
configure terminal
!
ip route 192.168.22.0 255.255.255.0 FastEthernet 0/0 20
ip route 172.30.11.0 255.255.255.0 FastEthernet 0/3 10