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Cisco IOS in a Nutshell, 2nd Edition by James Boney

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Name

shutdown — interface

Synopsis

shutdown
no shutdown

Description

This command shuts down the interface: no packets will be routed to it and all routing protocols will be notified that the interface is unavailable. It is a common mistake for new users to configure the interface and forget to do a no shutdown.

Example

Use the following sequence of commands to reset an interface:

Router(config)#interface serial0
Router(config)#shutdown
Router(config)#no shutdown

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