On a Cisco device, IPv4 addresses configured can be viewed with the command
show ip interface with the optional suffix of
brief or a specific interface-id.
brief suffix shows a summarised view of the configured IP addresses on the device.
The standard command can show a large amount of information such as the configured MTU, DHCP relay, ACL and the configured primary IP address.
The same information can be viewed with IPv6 using the c ommand
show ipv6 interface again with the optional suffix of
brief or a specific interface.