Configure descriptions

Adding a description to an interface on a Cisco device doesn’t provide any extra functionality, but it is useful for administrative purposes, since it will help you to remember the interface function. A description of an interface is locally significant and can be up to 240 characters long. It can be set using the description command from the interface submode:

DEVICE(config) interface Fa0/1
DEVICE(config-if) description WAN to London

Example configuration:

description command

The description is displayed in the output of the show running-config command:

show running config description

To erase the description, use the no description interface mode command (or the shortcut no desc):

no description command

Prerequisites for 200-301

200-301 is a single exam, consisting of about 120 questions. It covers a wide range of topics, such as routing and switching, security, wireless networking, and even some programming concepts. As with other Cisco certifications, you can take it at any of the Pearson VUE certification centers.

The recommended training program that can be taken at a Cisco academy is called Implementing and Administering Cisco Solutions (CCNA). The successful completion of a training course will get you a training badge.

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