# IPv4 Addressing (Part 2)

``` en show ip interface brief ```

``` conf t interface gigabitethernet 0/0 interface gigabitethernet0/0 in g0/0 ```

ip address 10.255.255.254 ?

ip address 10.255.255.254 255.0.0.0

# Enable the interface
no shutdown
------------------------------------------------
do sh ip int br

or

do show ip interface brief

int g0/1

ip add 172.16.255.255 255.255.0.0

# Enable the interface
no shut

or

no shutdown

do sh ip int br 

or 

do show ip interface brief

``` int g0/2 ip add 192.168.0.254 255.255.255.0 no shut or no shutdown ```

``` show interface g0/0 ```

``` int g0/0 description ## to SW1 ## int g0/1 desc ## to SW2 ## int g0/2 desc ## to SW3 ## do show interface description or do sh int desc ```

step 1

step 2

step 3

``` show running-config ```

``` copy running-config startup-config ```

step6

step7

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