IP Addressing and Subnetting

The following commands are used for IP addressing and subnetting:

Command Description
ip address <ip-value> <subnet-value> Assigns an IP and subnet mask
show ip interface <interface-number> Displays the status of a network interface as well as a detailed listing of its IP configurations and related characteristics
show ip interface brief Provides a concise summary of the IP interface status and configuration
ip address <ip-value> <subnet-value> secondary Assigns a secondary IP address
no ip address Removes an IP address

The output below shows the result from the show ip interface brief command:

NorthOfficeRouter#show    ip interface    brief                                                Protocol
Interface                 IP-Address       OK?     Method          Status                       down
GigabitEthernet0/0/0      unassigned       YES     unset           administratively    down     down
GigabitEthernet0/0/1      192.168.1.1      YES     manual          up                  down     down
GigabitEthernet0/0/2      172.16.0.254     YES     manual          administratively    down     down
Vlan1                     unassigned       YES     unset           administratively
NorthOfficeRouter#