HowTo : Configure CISCO port description

Type the following commands to create/edit the description of the port 'FastEthernet 0/1' on CISCO switch or router :
# enable
# configure terminal
(config)# interface FastEthernet 0/1
(config-subif)# description This is 1st Port of My Switch
(config-subif)# end
# write

To display a description and a status of an interface, use the 'show interfaces description' command :
# show interfaces FastEthernet 0/1 description
Interface Status Protocol Description
FastEthernet 0/1 up up This is 1st Port of My Switch